Results
2019-10-04: We are adopting a new airworthiness directive (AD) for certain BRP-Rotax GmbH & Co KG (Rotax) 912 and 914 model engines. This AD was prompted by power loss and engine revolutions per minute (RPM) drop on certain Rotax 912 and 914 model engines due to a quality control deficiency in the manufacturing process of certain valve push-rod assemblies resulting in partial wear on the rocker arm ball socket and possible malfunction of the valve. This AD requires one-time inspection and, depending on the findings, replacement of the affected parts with parts eligible for installation. We are issuing this AD to address the unsafe condition on these products.
98-16-06: This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A310 series airplanes, that requires inspections of the lower door surrounding structure to detect cracks and corrosion, and repair, if necessary. This amendment also requires inspections to detect cracking of the holes of the corner doublers, the fail-safe ring, and the door frames of the door structures; and repair, if necessary. In addition, this amendment provides for optional terminating action for certain inspections. This amendment is prompted by reports indicating that corrosion was found between the scuff plates at exit and cargo doors, and fatigue cracks originated from certain fastener holes located in adjacent structure. The actions specified by this AD are intended to detect and correct such corrosion and fatigue cracking, which could result in reduced structural integrity of the door surroundings.
98-14-14: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-3 and DC-3C series airplanes, that requires revising the Airplane Flight Manual (AFM) to modify the limitation that prohibits positioning the power levers below the flight idle stop during flight, and to provide a statement of the consequences of positioning the power levers below the flight idle stop during flight. This amendment is prompted by incidents and accidents involving airplanes equipped with turboprop engines in which the ground propeller beta range was used improperly during flight. The actions specified by this AD are intended to prevent loss of airplane controllability, or engine overspeed and consequent loss of engine power caused by the power levers being positioned below the flight idle stop while the airplane is in flight.
2006-22-14: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A330 airplanes and Model A340-200 and -300 series airplanes. This AD requires repetitive detailed inspections for cracking in the aft web of support rib 6 between certain bottom skin stringers on both wings; high frequency eddy current inspections for cracking of the attachment holes of the fuel pipes, and repair if necessary. This AD also provides for an optional modification, which extends a certain inspection threshold, and mandates, for certain airplanes, a new modification of support rib 6 on both wings, which ends the repetitive inspection requirement. This AD results from a report of significant cracking found in the aft web of support rib 6 on both wings. We are issuing this AD to prevent cracking in the aft web of support rib 6, which could result in overloading of adjacent ribs and the surrounding wing structure and consequent reduced structural integrity of the wing.
2019-10-05: The FAA is adopting a new airworthiness directive (AD) for all Viking Air Limited (Viking) Models DHC-6-1, DHC-6-100, DHC-6-200, DHC- 6-300, and DHC-6-400 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as occurrences of excessive wear of elevator cables at pulley location station (STA) 270.3. The FAA is issuing this AD to require actions to address the unsafe condition on these products.
96-13-11: This amendment supersedes an existing airworthiness directive (AD), applicable to all Airbus Model A300 B2, B4-100, and B4-200 series airplanes, that currently requires supplemental structural inspections to detect fatigue cracking, and repair of cracked structure. This amendment requires revising the supplemental structural inspection (SSID) program by changing some of the inspection techniques, changing some of the thresholds and intervals for inspections, expanding the area to be inspected for some of the inspections, and revising the Fleet Leader Program. This amendment is prompted by a review of recent service history and reports received from the current SSID program required by the existing AD. The actions specified by this AD are intended to prevent reduced structural integrity of these airplanes due to fatigue cracking.
97-22-06: 97-22-06 AIRBUS INDUSTRIE: Amendment 39-10177. Docket 96-NM-155-AD. Applicability: All Model Airbus Model A300, A310, and A300-600 series airplanes, certificated in any category. NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required as indicated, unless accomplished previously.To detect and correct corrosion of the ram air turbine (RAT) uplock pin/shaft and needle that could result in failure of the RAT to deploy and subsequent loss of emergency hydraulic power to the flight controls in the event that power is lost in both engines, accomplish the following: (a) Prior to the accumulation of 30 months since the date of manufacture, or within 3 months after the effective date of this AD, whichever occurs later: Accomplish the requirements of paragraphs (a)(1) and (a)(2) of this AD in accordance with Airbus Service Bulletin A300-29-0108, dated April 1, 1996 (for Model A300 series airplanes); A310-29-2076, dated April 1, 1996 (for Model A310 series airplanes); or A300-29-6037, dated April 1, 1996 (for Model A300-600 series airplanes); as applicable. Thereafter, repeat these actions at intervals not to exceed 30 months. (1) Perform a RAT extension test on the ground, in accordance with the procedures specified in the Maintenance Manual. (2) Disassemble and remove the uplock mechanism of the RAT and perform a visual inspection of the uplock mechanism to detect corrosion, in accordance with the applicable service bulletin. NOTE 2: For the purposes of this AD, the RAT uplock mechanism includes both the lever assembly and uplock unit. (i) If no corrosion is detected: Prior to further flight, clean and lubricate the uplock mechanism and its associated parts, reinstall the assembly, and perform a retraction/extension/retraction of the RAT, in accordance with the applicable service bulletin. (ii) If any corrosion is detected in any part of the uplock mechanism, prior to further flight, accomplish either paragraph (a)(2)(ii)(A) or (a)(2)(ii)(B) of this AD in accordance with the applicable service bulletin. (A) Replace the uplock mechanism with a new part and perform a retraction/extension/retraction of the RAT, in accordance with the applicable service bulletin. Or (B) Clean and lubricate the uplock mechanism and its associated parts. Within 30 days following accomplishment of this cleaning and lubrication, replace the uplock mechanism with a new part and perform a retraction/extension/retraction of the RAT. (b) Initial accomplishment of the actions required by paragraph (a) of this AD that have been performed in accordance with Airbus All Operator Telex (AOT) 29-16, Revision 01, dated January 10, 1996, is considered acceptable for compliance with the initial RAT extension test and an initial visual inspection as required by paragraph (a) of this AD. However, the first repetitive inspection, as required by paragraph (a) of this AD, must be performed within 30 months after that RAT extension test and visual inspection were conducted, and repeated thereafter at intervals not to exceed 30 months. (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. NOTE 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The actions shall be done in accordance with Airbus Service Bulletin A300-29- 0108, dated April 1, 1996; Airbus Service Bulletin A310-29-2076, dated April 1, 1996; or Airbus Service Bulletin A300-29-6037, dated April 1, 1996; as applicable. This incorporation by reference was approved by the Director of the FederalRegister in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Airbus Industrie, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. NOTE 4: The subject of this AD is addressed in French airworthiness directive 95-163-182 (B) R2, dated June 5, 1996. (f) This amendment becomes effective on December 2, 1997.
2000-15-06: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10 series airplanes, that requires a general visual inspection of electrical power feeder cables, airplane structure, and insulation blankets at a certain fuselage station to detect chafing and arcing damage, and corrective actions, if necessary; and installation of a standoff and clamp. This amendment is prompted by an incident in which the power feeder cables in the cabin electrical system were found to be chafed and arced against a fuselage frame due to insufficient clearance between the cables and airplane structure. The actions specified by this AD are intended to prevent such chafing and arcing, which could cause smoke and fire in the overhead of the main cabin.
95-18-06 PL: 95-18-06 Hamilton Standard: Priority Letter issued on August 28, 1995. Docket No. 95-ANE-50. Supersedes Telegraphic AD T95-18-51 and AD 95-05-03, Amendment 39-9170. Applicability: Hamilton Standard Models 14RF-9, 14RF-19, 14RF-21, and 14SF-5, 14SF-7, 14SF-11, 14SFL11, 14SF-15, 14SF-17, 14SF-19, and 14SF-23; and Hamilton Standard/British Aerospace 6/5500/F propellers installed on but not limited to Embraer EMB-120 and EMB 120-RT; SAAB-SCANIA SF 340B; Aerospatiale ATR42-100, ATR42-300, ATR42-320, ATR72; DeHavilland DHC-8-100 series, DHC-8-300 Series; Construcciones Aeronauticas SA (CASA) CN-235 series and CN-235-100; Canadair CL-215T and CL-415; and British Aerospace ATP airplanes. NOTE: This AD applies to each propeller identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For propellers that have been modified, altered, or repaired so that the performance ofthe requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (h) to request approval from the Federal Aviation Administration (FAA). This approval may address either no action, if the current configuration eliminates the unsafe condition, or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any propeller from the applicability of this AD. Compliance: Required as indicated, unless accomplished previously. To prevent separation of a propeller blade due to cracks initiating in the blade taper bore, that can result in aircraft damage, and possible loss of aircraft control, accomplish the following: (a) For Hamilton Standard Model 14RF-9 propeller blades, installed on Embraer EMB-120 series aircraft, within the next 10 flight cycles after the effective date of this AD, remove from service propeller blades that have been ultrasonically shear wave inspected in accordance with AD 94-09-06 or AD 95-05-03, removed from service due to crack indications, and subsequently reworked and returned to service. These propeller blades include, but are not limited to, the following serial numbers: 847598 855196 851646 855859 852085 857375 852561 858696 853151 859824 854530 860589 854535 867590 854838 876707 855014 880245 855042 (b) For Hamilton Standard Models 14RF-19, 14RF-21, and 14SF-5, 14SF-7, 14SF-11, 14SFL11, 14SF-15, 14SF-17, 14SF-19, and 14SF-23; and Hamilton Standard/British Aerospace 6/5500/F propeller blades, installed on aircraft other than Embraer EMB-120 series aircraft, within the next 10 flight cycles after the effective date of this AD, unless inspected previously in accordance with Telegraphic AD T95-18-51, perform an ultrasonic shear wave inspection for cracks in the blade taper bore of propeller blades that have been ultrasonically inspected in accordance with AD 94-09-06 or AD 95-05-03, removed from service due to crack indications, and subsequently reworked and returned to service. Thereafter, at intervals not to exceed 1,250 flight cycles since last inspection, perform an ultrasonic shear wave inspection for cracks in the blade taper bore of propeller blades. Perform the ultrasonic shear wave inspection in accordance with the Accomplishment Instructions of the following Hamilton Standard Alert Service Bulletins (ASB's), as applicable: No. 14RF-21-61-A68, No. 14SF-61-A88, No. 14RF-19-61-A49, No. 6/5500/F-61-A36; all dated August 25, 1995. Remove cracked propeller blades from service and replace with serviceable parts. (c) For Hamilton Standard Model 14RF-9 propeller blades, installed on Embraer EMB-120 series aircraft, not affected by paragraph (a) of this AD, perform ultrasonic shear wave inspections in accordance with theAccomplishment Instructions of Hamilton Standard ASB No. 14RF-9-61- A85, dated August 28, 1995. Remove cracked propeller blades from service and replace with serviceable parts: (1) For propeller blades with 1,250 or more flight cycles since last ultrasonic shear wave inspection on the effective date of this AD, or that have not been ultrasonically shear wave inspected, perform an ultrasonic shear wave inspection for cracks within the next 50 flight cycles after the effective date of this AD. (2) For propeller blades with less than 1,250 flight cycles since last ultrasonic shear wave inspection on the effective date of this AD, perform an ultrasonic shear wave inspection for cracks within the next 50 flight cycles after the effective date of this AD, or prior to accumulating 1,250 flight cycles, whichever occurs later. (3) Thereafter, perform repetitive ultrasonic shear wave inspections at intervals not to exceed 1,250 flight cycles since last inspection. (d) For Hamilton Standard Models 14RF-19, 14RF-21, and 14SF-5, 14SF-7, 14SF-11, 14SFL11, 14SF-15, 14SF-17, 14SF-19, and 14SF-23; and Hamilton Standard/British Aerospace 6/5500/F propeller blades; identified by serial number in the ASB's listed in this paragraph, installed on aircraft other than Embraer EMB-120 aircraft, and not affected by paragraph (b) of this AD, perform ultrasonic shear wave inspections in accordance with the Accomplishment Instructions of Hamilton Standard ASB's, as applicable: No. 14RF-21-61-A69, No. 14SF-61-A89, No. 14RF-19- 61-A50, No. 6/5500/F-61-A37; all dated August 28, 1995. Remove cracked propeller blades from service and replace with serviceable parts: (1) For propeller blades with 1,250 or more flight cycles on the effective date of this AD, or that have not been ultrasonically shear wave inspected, perform an ultrasonic shear wave inspection for cracks within the next 150 flight cycles after the effective date of this AD. (2) For propeller bladeswith less than 1,250 flight cycles on the effective date of this AD, perform an ultrasonic shear wave inspection for cracks within the next 150 flight cycles after the effective date of this AD, or prior to accumulating 1,250 flight cycles, whichever occurs later. (3) Thereafter, perform repetitive ultrasonic shear wave inspections at intervals not to exceed 1,250 flight cycles since last inspection. (e) No ultrasonic shear wave inspections are required for Hamilton Standard Models 14RF- 19, 14RF-21, and 14SF-5, 14SF-7, 14SF-11, 14SFL11, 14SF-15, 14SF-17, 14SF-19, and 14SF-23; and Hamilton Standard/British Aerospace 6/5500/F propeller blades, that have been shotpeened in the taper bore during manufacture, and not identified by serial numbers in the ASB's listed in paragraph (b) of this AD. (f) Propeller blades removed from service in accordance with this AD may not be returned to service. (g) For the purpose of this AD, a flight cycle is defined as one takeoff andthe next landing of an aircraft. (h) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Boston Aircraft Certification Office. The request should be forwarded through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Boston Aircraft Certification Office. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Boston Aircraft Certification Office. (i) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the aircraft to a location where the requirements of this AD can be accomplished. (j) Copies of the applicable service information may be obtained from Hamilton Standard, One Hamilton Road, Windsor Locks, CT 06096-1010; telephone (203) 654-6876. This information may be examined at the FAA, New England Region, Office of the Assistant Chief Counsel, 12 New England Executive Park, Burlington, MA. (k) Priority Letter AD 95-18-06, issued August 28, 1995, becomes effective upon receipt. (l) Priority Letter AD 95-18-06 supersedes Telegraphic AD T95-18-51 and AD 95-05-03, Amendment 39-8854.
85-15-06: 85-15-06 SIKORSKY AIRCRAFT: Amendment 39-5164. Applies to Sikorsky Model S-76A helicopters certificated in all categories. Compliance is required prior to further flight, unless already accomplished. To prevent failure of certain tail rotor drive shaft bearings which may have been installed without lubricant, accomplish the following in accordance with Sikorsky Aircraft Alert Service Bulletin (ASB) 76-66-20, paragraph E.1, dated July 25, 1985. (a) Remove all Part Number (P/N) SB1138-101 bearings manufactured by MRC not identified with either a white dot on the grease fitting or a serial number and with under 100 hours operating time. (b) Replace removed bearings with MRC P/N SB1138-101 bearings identified with either a white dot on the grease fitting or a serial number or both, or with the alternate bearing manufactured by Fafnir and approved for this installation. (c) Aircraft may be ferried in accordance with the provisions of FAR Section 21.197 and 21.199 to a base where the AD can be accomplished. (d) Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Boston Aircraft Certification Office, ANE150, 12 New England Executive Park, Burlington, Massachusetts 01803. Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Boston Aircraft Certification Office, ANE-150, may adjust the compliance time specified in this AD. Sikorsky Aircraft ASB 76-66-20 is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Mr. R. E. Warren, Sikorsky Aircraft Division, United Technologies Corporation, North Main Street, Stratford, Connecticut 06601. These documents also may be examined at the Rules Docket, Office of the Regional Counsel, FAA, Southwest Region, 4400 Blue Mound Road, Fort Worth, Texas 76106. This amendment becomes effective November 25, 1985, as to all persons except those persons to whom it was made immediately effective by priority letter AD No. 85-15-06, issued July 30, 1985, which contained this amendment.
98-16-05: This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300-600 series airplanes, that requires inspections of the areas behind the scuff plates below the passenger/crew doors and bulk cargo door to detect cracks and corrosion, and repair, if necessary. This amendment also requires inspections to detect cracking of the holes of the corner doublers, the fail-safe ring, and the door frames of the door structures; and repair, if necessary. In addition, this amendment provides for optional terminating action for certain inspections. This amendment is prompted by reports indicating that corrosion was found behind the scuff plates at exit and cargo doors, and fatigue cracks originated from certain fastener holes located in adjacent structure. The actions specified by this AD are intended to detect and correct such corrosion and fatigue cracking, which could result in reduced structural integrity of the door surroundings.
2019-09-04: We are adopting a new airworthiness directive (AD) for certain Leonardo S.p.A. (Type Certificate previously held by Finmeccanica S.p.A., AgustaWestland S.p.A.) Model AW109SP helicopters. This AD requires inspecting and altering the rescue hoist. This AD was prompted by a report of a damaged hoist cable that detached after load application. The actions of this AD are intended to address an unsafe condition on these products.
84-19-07: 84-19-07 BRITISH AEROSPACE VISCOUNT: Amendment 39-4918. Applies to Model 700 and 800 series airplanes, certificated in all categories, as indicated in each paragraph below. To prevent failure of certain components in the hydraulic system, entry and cargo doors, or rudder mechanism, accomplish the following within the compliance time specified in each paragraph below, unless previously accomplished: A. For all Model 700 series pre-Modification D.2883 and for all Model 800 series pre-Modification FG.1553 which are equipped with hydraulic system Micronic Filters, Part Numbers A6301, A6302, or A5641, inspect and replace hydraulic filter attachment bolts in accordance with Preliminary Technical Leaflet (PTL) No. 308 for all Model 700 series and PLT No. 177 for all 800 series airplanes, both dated February 7, 1979, within 1000 hours time in service after the effective date of this AD. B. Inspect and modify entrance and cargo doors of Model 700 series airplanes in accordancewith PTL No. 235, Issue 3, dated December 8, 1968, within 350 hours time in service after the effective date of this AD. Subsequent inspections, as denoted in paragraph 4.2 of the PTL, must be accomplished at intervals not to exceed 350 hours from the previous inspection. Modify Model 700 series airplanes in accordance with the instructions in BAe bulletin for Modification No. D.3051, Issue 1, dated April 23, 1962, and Issue 2, dated May 17, 1978, within 350 hours time in service after the effective date of this AD, for all entrance and cargo door bolt sleeves. C. Replace rudder spigot and mounting block on Model 700 series and Model 800 series airplanes in accordance with PTL No. 311, Issue 1, and PTL No. 180, Issue 1, respectively, both dated May 22, 1981, at or before 29,500 hours total time in service or within the next 500 hours after the effective date of this AD, whichever occurs later. D. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and modifications required by this AD. This amendment becomes effective October 22, 1984.
99-26-17: This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace BAe Model ATP airplanes, that requires modification of the engine intake ducts to provide new cable routes and improved contamination protection of connectors on the engine intake de-icing system. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent chafing and subsequent damage to the engine intake de-icing system wiring, and contamination of electrical connectors and plugs. Damage to system wiring or contamination of the electrical connectors or plugs could result in loss of engine intake de-icing capability, accretion of ice in the intake duct, ice ingestion, and consequent engine flameout.
99-27-07: This amendment supersedes an existing airworthiness directive (AD), applicable to all Airbus Model A300 B4-600R and A300 F4-600R series airplanes, that currently requires a one-time visual inspection for damage of the center tank fuel pumps and fuel pump canisters, and replacement of damaged fuel pumps and fuel pump canisters with new or serviceable parts. This amendment also requires repetitive visual inspections of the fuel pumps and repetitive eddy current inspections of the fuel pump canisters, and replacement of damaged fuel pumps and fuel pump canisters with new or serviceable parts. This amendment also reduces the applicability to include only those airplanes that have a trim tank system installed. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to detect damage to the fuel pump and fuel pump canister, which could result in loss of flame trap capability and could provide a fuel ignition source in the center fuel tank.
2019-08-13: We are adopting a new airworthiness directive (AD) for certain Textron Aviation, Inc. (type certificate previously held by Cessna Aircraft Company) Models 525, 525A, and 525B airplanes with Tamarack active load alleviation system (ATLAS) winglets installed in accordance with Supplemental Type Certificate (STC) SA03842NY. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as malfunction of the ATLAS. We are issuing this AD to require actions to address the unsafe condition on these products.
84-25-04: 84-25-04 BOEING: Amendment 39-4968. Applies to all Boeing Model 747 airplanes equipped with Landing Rollout Control Unit automatic landing systems, Boeing P/N 60B00013-757 or 60B00013-759. \n\n\tTo prevent a hazardous condition due to loss of the autopilot battery power, within 30 days after the effective date of this AD install a placard on the autopilot P10 mode select panel which reads as follows: "DO NOT USE THE LAND MODE," unless already accomplished. The placard may be removed when the airplane wiring has been modified in accordance with Boeing Service Bulletin 747-22A2152, dated November 16, 1984, or later FAA approved revision; or any alternate means of compliance which provides an equivalent level of safety approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tAll persons affected by this proposal who have not already received the Service Bulletin may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box3707, Seattle, Washington 98168. These documents may also be examined at the FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington. \n\n\tThis amendment becomes effective January 2, 1985.
99-19-16: This amendment adopts a new airworthiness directive (AD), applicable to certain Dornier Model Dornier 328-100 series airplanes, that requires revising the Airplane Flight Manual (AFM) to include requirements for activation of the airframe pneumatic deicing boots. This amendment is prompted by reports of inflight incidents and an accident that occurred in icing conditions where the airframe pneumatic deicing boots were not activated. The actions specified by this AD are intended to ensure that flightcrews activate the pneumatic wing and tail deicing boots at the first signs of ice accumulation. This action will prevent reduced controllability of the aircraft due to adverse aerodynamic effects of ice adhering to the airplane prior to the first deicing cycle.
2019-09-01: We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports indicating that the pitot heat switch is not always set to ON, which could result in misleading air data. This AD requires replacement of pitot anti-icing system components, installation of \n\n((Page 23459)) \n\na junction box and wiring provisions, repetitive testing of the anti- icing system, and applicable on-condition actions. We are issuing this AD to address the unsafe condition on these products.
98-16-11: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300, A310, and A300-600 series airplanes, that requires repetitive detailed visual inspections to detect cracks in the pylon thrust and sideload fitting of the wing, and replacement of any cracked pylon thrust and sideload fitting with a new fitting. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to detect and correct cracks in the pylon thrust and sideload fitting of the wing, which could result in reduced structural integrity of the airplane.
84-16-01: 84-16-01 MESSERSCHMITT-BOLKOW-BLOHM: Letter issued August 7, 1984. Applies to MBB Model BO 105 series helicopters certificated in all categories that are equipped with the following tail rotor blades: 105-31743 Serial Nos.: 115, 118, 219, 224, 387, 395, 581, 608, 615, 650. 105-31744 (Modification of 105-31742) Serial Nos.: 64, 86, 124, 127, 130, 131, 143, 147, 152, 158, 179, 180, 210, 211, 216, 217, 219, 220, 240, 246, 256, 262, 265, 266, 267, 269, 295, 342, 344, 372, 383, 390, 394, 414, 425, 433, 437, 438, 442, 444, 461, 467, 489, 491, 495, 499, 504, 506, 514, 516, 517, 528, 538, 543, 552, 556, 588, 591, 596, 601, 603, 607, 846, 936, 1065, 1174, 1175, 1199, 1234, 1235, 1237, 1270, 1300. Compliance required as indicated. (A) Before further flight, perform a visual check of each tail rotor blade tip area (approximately 100MM (4 inches) from end cap inward) for cracks. (B) Repeat the check of Paragraph (A) before each subsequent flight until the affected blades are replaced. (C) Replace cracked tail rotor blades with serviceable blades before further flight. (D) The check required by Paragraph (A) of this AD is not considered to be maintenance or preventive maintenance, and may be performed by the pilot, however, the person performing this check shall make an entry in the aircraft maintenance records containing the following information: The name of the person who performed the check, the date the check was accomplished, the signature, certificate number, and kind of certificate held by the person performing the check. (E) An equivalent method of compliance with this AD may be used when approved by the Manager, Aircraft Certification Division, FAA, Southwest Region, P.O. Box 1689, Fort Worth, Texas 76101. NOTE: MBB Alert Bulletin No. 23 applies to this inspection. This airworthiness directive becomes effective upon receipt.
2000-15-18: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 737-100 and -200 series airplanes, that currently requires inspections to detect cracking of the support fittings of the Krueger flap actuator; and, if necessary, replacement of existing fittings with new steel fittings and modification of the aft attachment of the actuator. That AD also provides for an optional terminating modification that constitutes terminating action for the repetitive inspections. This amendment requires accomplishment of the previously optional terminating action. This amendment is prompted by reports of cracking due to fatigue and stress corrosion of the support fittings of the Krueger flap actuator. The actions specified by this AD are intended to prevent such cracking, which could result in fracturing of the actuator attach lugs, separation of the actuator from the support fitting, severing of the hydraulic lines, and resultant loss of hydraulic fluids. These conditions, if not corrected, could result in possible failure of one or more hydraulic systems, and consequent reduced controllability of the airplane.
2019-08-07: We are superseding Airworthiness Directive (AD) 2014-20-04, which applied to all Airbus SAS Model A318 and A319 series airplanes; Airbus SAS Model A320-111, -211, -212, -214, -231, -232, and -233 airplanes; and Airbus SAS Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes. AD 2014-20-04 required repetitive inspections of the titanium angles between the belly fairing and the keel beam side panel, an inspection of the open holes of cracked titanium angles, and corrective action if necessary. This AD continues to require those actions, adds Model A320-216 airplanes, and requires a detailed inspection for, and replacement of, certain rivets, and corrective actions if necessary. This AD was prompted by reports of cracks at the lower riveting of the four titanium angles that connect the belly fairing to the keel beam side [[Page 23462]] panels. We are issuing this AD to address the unsafe condition on these products.
2000-15-17 R1: This document corrects a typographical error that appeared in airworthiness directive (AD) 2000-15-17 that was published in the Federal Register on August 8, 2000 (65 FR 48368). The typographical error resulted in the omission of an airplane model from paragraph (c) of the AD. This AD is applicable to certain McDonnell Douglas Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87); Model MD-88 airplanes; and Model MD-90-30 series airplanes. This AD requires installation of a pipe support and clamps on the hydraulic lines in the aft fuselage; replacement of the hydraulic pipe assembly in the aft fuselage with a new pipe assembly; and installation of drain tube assemblies and diverter assemblies in the area of the auxiliary power unit inlet; as applicable.
52-02-02: 52-02-02 ERCO: Applies to All Model 415 Series and Models E and G Aircraft. Compliance required as indicated. As a result of several Ercoupe accidents, the following precautionary measures should be taken: 1. Before the next flight and at each 25-hour inspection: (a) Inspect the aileron balance assembly (Erco P/N 415-16009) and ailerons for cracks in support structure and skin, respectively. Repair or replace defective parts. (b) Inspect the four No. 6-32 screws which attach the balance weight support to the aileron for looseness and damage. Replace defective screws with AN 526-632 screws, taking care not to overstress during tightening. 2. Before next flight and at each 100-hour inspection, thereafter, inspect the aileron hinges and aileron control system for excessive looseness or wear in hinge pins or bearings. If, with one aileron blocked in the neutral position, the total play of the other aileron, measured at the trailing edge, exceeds 7/16-inch, allthe joints and bearing should be checked and those which are loose should be tightened or replaced. 3. If the aileron balance weights have been removed in accordance with Erco Service Bulletin No. 57, item 1 above and AD 47-20-06 do not apply. However, any previous cracks in the aileron skin or beam which occurred prior to removal of the aileron balance weights must be repaired or the parts replaced. The free play referred to in item 2 above must be reduced to 5/16-inch. 4. Before the next flight, determine that the air speed instrument is distinctly marked in accordance with the operating limitations. (Engineering and Research Corp. Service Memorandum No. 56 covers this same subject.) This supersedes AD 49-02-02; the new material is contained in item 3.