Results
2016-25-16: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of two cases where the main landing gear (MLG) failed to fully extend; it was determined that interference between the MLG door and the MLG fairing seal prevented the MLG door from opening fully. This AD requires repetitive inspections of the MLG fairing, fairing seal, door, and adjacent structures; and replacement or repair of affected parts and fasteners, or removal of the MLG door, if necessary. This AD also requires installation of a safety guide in the MLG fairing and an increase of the spacing between the MLG door and the fairing, which would terminate the repetitive inspections. We are issuing this AD to address the unsafe condition on these products.
86-15-05: 86-15-05 DEHAVILLAND AIRCRAFT OF CANADA, LTD.: Amendment 39-5357. Applies to Model DHC-7 airplanes, serial numbers 1 through 14 inclusive, certificated in any category. Compliance is required within 60 days after the effective date of this AD, unless previously accomplished. To assure proper crew warning in the event of the loss of the 400 Hz AC electrical power system, accomplish the following: 1. Modify the 400 Hz AC system in accordance with DeHavilland Service Bulletin 7-24-13, Revision A, dated September 10, 1982. 2. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region. 3. 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/or modifications required by this AD. All persons affected by this directive, who have not already received the appropriate service bulletin from the manufacturer, may obtain copies upon request to DeHavilland Aircraft of Canada, Ltd., Downsview, Ontario M3K 1Y5, Canada. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment becomes effective September 4, 1986.
89-03-16: 89-03-16 CESSNA: Amendment 39-6162. Final copy of Priority Letter AD issued February 7, 1989. Applicability: Model 650 series airplanes, serial numbers 650-0067 through 650-0165, certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent non-restorable loss of all avionics power, accomplish the following: A. Within 25 hours time-in-service after the effective date of this Airworthiness Directive (AD), perform an operational check of the avionics bus relays, in accordance with the Accomplishment Instructions of Cessna Alert Service Letter SLA650-24-14, dated February 3, 1989. If the wiring of the avionics bus relays is not correctly installed, prior to further flight, modify that wiring in accordance with the referenced service letter. B. Within 5 days after accomplishing the check required by paragraph A., above, submit a report, in writing, of any incorrectly installed avionics bus relay wiring identified,to: Manager, Wichita Aircraft Certification Office, FAA, Central Region, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209. C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Wichita Aircraft Certification Office, FAA, Central Region. NOTE: If appropriate, the request should be forwarded through an FAA Principal Maintenance Inspector (PMI) who may add any comments and then send it to the Manager, Wichita Aircraft Certification Office. D. Special flight permits may be issued in accordance with FAR 21.197 or 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not received copies of the service information from the manufacturer, may obtain copies upon request to Cessna Aircraft Company, P.O. Box 7706, Wichita, Kansas 67277. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the FAA, Central Region, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid- Continent Airport, Wichita, Kansas. This AD was effective earlier to all recipients of Priority Letter AD 89-03-16 issued February 7, 1989. This amendment (39-6162, AD 89-03-16) becomes effective April 5, 1989.
92-25-02: 92-25-02 FOKKER: Amendment 39-8417. Docket No. 92-NM-96-AD. Applicability: All Model F28 Mark 0100 series airplanes, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent false indications to the crew that the landing gear is not down and locked, accomplish the following: (a) Within 120 days after the effective date of this AD, identify the serial number on the nameplate of the main landing gear downlock actuator, part number 201218001 or 201218002. (1) If the serial number identified on the nameplate is not one of the following serial numbers, no further action is required by this AD: Part Number 201218001 Part Number 201218002 CWDD/DRG/1/88 to CWDD/DRG/20/88 CWDD/DRG/1/88 to CWDD/DRG/19/88 CWDD/DRG/1/89 to CWDD/DRG/25/89 CWDD/DRG/1/89 to CWDD/DRG/32/89 CWDD/DRG/1/90 to CWDD/DRG/42/90 CWDD/DRG/1/90 to CWDD/DRG/34/90 CWDD/DRG/1/91 to CWDD/DRG/13/91 CWDD/DRG/1/91 to CWDD/DRG/10/91 (2) If the serial number identified on the nameplate is one of the affected serial numbers specified in paragraph (a)(1) of this AD, and if "F100-32-45" is identified on the nameplate, no further action is required by this AD. (3) If the serial number identified on the nameplate is one of the affected serial numbers specified in paragraph (a)(1) of this AD, and if "F100-32-45" is not identified on the nameplate, prior to further flight, replace the downlock actuator with one that has "F100-32-45" identified on the nameplate, or one that is not one of the affected serial numbers specified in paragraph (a)(1) of this AD, in accordance with Fokker Service Bulletin SBF100-32-052, dated May 1, 1991. (b) As of the effective date of this AD, no main landing gear downlock actuator, part number 201218001 or 201218002, having a serial number that is specified in paragraph (a)(1) of this AD, shall be installed on any airplane unless "F100-32-045" is identified on the nameplate. (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. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The replacement shall be done in accordance with Fokker Service Bulletin SBF100-32- 052, dated May 1, 1991. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Fokker Aircraft USA, Inc., 1199 North Fairfax Street, Alexandria, Virginia 22314. 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. (f) This amendment becomes effective on December 23, 1992.
73-13-08: 73-13-08 CESSNA: Amdt. 39-1674. Applies to Model 421B (Serial Numbers 421B0260 through 421B0346) airplanes having AiResearch TH0871 turbochargers with serial number prefixes BC or later installed and to any Model 421B airplane prior to Serial Number 421B0260 on which new turbochargers with serial number prefixes BC and later or remanufactured turbochargers with serial number prefixes BCR and later have been installed. NOTE: Re turbochargers, the first letter B indicates the year of manufacture, i.e., 1972. The second letter C, D, E, etc., indicates the month of manufacture. Therefore, prefix BD is later than BC, BE is later than BD, etc. An R following the dating letters indicates the unit has been remanufactured. Turbochargers affected are those manufactured or remanufactured subsequent to July 1, 1972. Compliance: Required as indicated, unless already accomplished. To prevent loss of engine oil, within the next 25 hours' time in service after the effective date of this AD, install a check valve in the crankcase breather oil separator line in accordance with instructions set forth in Cessna Service Letter No. ME73-10, dated May 18, 1973, or later FAA-approved revision, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective June 27, 1973.
2016-25-17: We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD was prompted by an occurrence that was reported of rudder pedal restriction on a SAAB Model 2000 airplane with the large potable water system (LPWS) installed, equipped with in-line heaters. This AD requires installation of shrinkable tubes on the water piping of the basic potable water system (BPWS). We are issuing this AD to address the unsafe condition on these products.
2023-18-09: The FAA is superseding Airworthiness Directive (AD) 2023-04- 16, which applied to certain Dassault Aviation Model FALCON 900EX airplanes. AD 2023-04-16 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023-04- 16, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This AD continues to require the actions in AD 2023-04-16, and also requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2023-09-05: The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2016-25-06: We are adopting a new airworthiness directive (AD) for all The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes. This AD was prompted by a report of fatigue cracking in a rear spar lower cap of the horizontal stabilizer. This AD requires repetitive inspections for cracking of the rear spar lower caps of the horizontal stabilizer, post-modification and post-repair inspections, and corrective actions if necessary. This AD also provides an optional terminating fatigue life enhancement modification. We are issuing this AD to address the unsafe condition on these products.
2023-02-13: The FAA is superseding Airworthiness Directive (AD) 2020-21- 19, which applied to certain Dassault Aviation Model FALCON 900EX airplanes. AD 2020-21-19 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD continues to require the actions in AD 2020-21-19, and also requires revising the existing maintenance or inspection program, as applicable, to incorporate additional new or more restrictive airworthiness limitations; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
72-24-05: 72-24-05 MCDONNELL DOUGLAS: Amdt. 39-1566. Applies to Model DC-9-10 series airplanes certificated in all categories. \n\n\tCompliance required within the next 3,000 hours' time in service after the effective date of this AD, unless already accomplished. \n\n\tTo prevent possible injury to the forward flight attendant, remove the entry door closing assist handle, P/N 3918664-1, and install a handle, P/N 3924268-1, per McDonnell Douglas Service Bulletin No. 25-31, dated May 4, 1966, or McDonnell Douglas Service Bulletin No. 25-185, dated March 31, 1972, or later FAA-approved revisions, or an equivalent modification approved by the Chief, Aircraft Engineering Division, FAA, Western Region. \n\n\tThis amendment becomes effective January 3, 1973.
95-26-05 R1: This amendment rescinds an existing Airworthiness Directive (AD) for Robinson Helicopter Company (Robinson) Model R44 helicopters, which currently requires revisions to the R44 Rotorcraft Flight Manual (RFM). The RFM revisions limit operations in high winds and turbulence. The RFM revisions also provide information about main rotor stall and mast bumping with recommendations for avoiding these situations and additional emergency procedures for use in certain conditions. This amendment is prompted by the FAA's determination that the limitations and the procedures required by that AD are no longer necessary to correct an unsafe condition. The actions specified by this AD rescind all the requirements of AD 95-26-05, Amendment 39-9463, Docket 95-SW- 30-AD.
2004-12-14: This amendment adopts a new airworthiness directive (AD), applicable to certain Dornier Model 328-100 series airplanes, that requires an inspection of the alternating current (AC) power cables, realignment of the AC power cable retaining clamp, and corrective actions if necessary. This action is necessary to prevent chafing of the AC power cables against the alternator, which could result in a short circuit and impaired performance of AC-powered components, possibly leading to loss of flight-critical information to the flight deck and reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
88-12-12: 88-12-12 CESSNA: Amendment 39-5941. Applies to all serial numbers of Models 177RG and F177RG airplanes certificated in any category. \n\n\tCompliance: Required within the next 75 hours time in service after the effective date of this AD, unless already accomplished. \n\n\tTo prevent power loss or engine stoppage due to water contamination of the fuel system, accomplish the following: \n\n\t(a)\tModify the airplane fuel system using one of the options in subparagraphs (a)(1), (a)(2), or (a)(3) below: \n\n\t\t(1)\tInstall a fuel strainer quick drain control in accordance with STC SA2344CE or SA2345CE. \n\tNOTE 1: These STCs are owned by Air Plains, Inc., P.O. Box 541, Wellington, Kansas 67152, telephone (316) 326-8581. \n\n\t\t(2)\tInstall a fuel strainer quick drain control in accordance with STC SA2335CE or SA2336CE. \n\tNOTE 2: These STCs are owned by Cessna Pilots Association, Inc., Wichita Mid- Continent Airport, 2120 Airport Road, P.O. Box 12948, Wichita, Kansas 67277, telephone (316)946-4777. \n\n\t\t(3)\tInstall a fuel strainer quick drain control by using equivalent aircraft standard hardware. \n\tNOTE 3: The FAA has received reports of corrosion inside the fuel strainer bowl caused by undrained water. A check of the condition of the fuel strainer and bowl can be made during installation of the fuel strainer quick drain control. \n\n\t(b)\tAirplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. \n\n\t(c)\tAn equivalent means of compliance with this AD may be used, if approved by the Manager, Wichita Aircraft Certification Office, Federal Aviation Administration, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209. \n\n\tAll persons affected by this AD may obtain copies of the document(s) referred to herein upon request to: Cessna Pilots Association Supplemental Type Certificates (STCs) SA2335CE and SA2336CE information may be obtained from Mr. John Frank, Editor Cessna Pilots Association, Wichita Mid-Continent Airport, 2120 Airport Road, P.O. Box 12948, Wichita, Kansas 67277, telephone (316) 946-4777. Air Plains Inc. STCs SA2344CE and SA2345CE information may be obtained from Mr. Kent McIntyre, Vice President, Air Plains, Inc., P.O. Box 541, Wellington, Kansas 67152, telephone (316) 326-8581. These documents may also be examined at FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. \n\n\tThis amendment, 39-5941, becomes effective on July 5, 1988.
2016-25-11: We are adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, V2533-A5, V2525-D5, V2528-D5, and V2531-E5 turbofan engines. This AD was prompted by nine in-flight shutdowns (IFSDs) that resulted from premature failure of the No. 3 bearing. This AD requires inspections and corrective actions for bearing damage. This AD also requires removal of the No. 3 bearing from service at the next engine shop visit. We are issuing this AD to correct the unsafe condition on these products.
93-22-06: 93-22-06 AIRBUS: Amendment 39-8730. Docket 93-NM-99-AD. Applicability: Model A300 series airplanes, excluding Model A300-600 series airplanes and Model A310 series airplanes; on which Airbus Modification 10361 has not been installed; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent liquid from entering the generator control unit (GCU) and causing internal short circuits, which could result in the failure of the GCU and subsequent loss of electrical generation capacity, accomplish the following: (a) Within 6 months after the effective date of this AD, install a protective cover over each GCU and install a drainage circuit, in accordance with Airbus Industrie Service Bulletin A300-24-0082, dated March 3, 1993. (b) 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: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The installations shall be done in accordance with Airbus Industrie Service Bulletin A300-24-0082, dated March 3, 1993. This incorporation by reference was approved by the Director of the Federal Register 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. (e) This amendment becomes effective on December 17, 1993.
75-12-09 R2: 75-12-09 R2 ROCKWELL: Amendment 39-2223 as amended by Amendment 39-4166 is further amended by Amendment 39-4246. Applies to Models 500, 500A, 500B, 500S, 500U, 520, 560, 560A, 560E, 560F, 680, 680E, 680F, 680F(P), and 720, through Serial Number 3323 airplanes certificated in all categories. Compliance is required as indicated. Within the next 300 hours' time in service after the effective date of this AD, to prevent inadvertent pilot induced structural failure, install "bob weights" in accordance with Rockwell International Service Bulletin No. 128, Revision 1, dated April 24, 1975, or No. 129, Revision 2, dated May 9, 1975, or No. 136, Revision 1, dated May 9, 1975 (or later FAA approved revision), or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas, unless already accomplished in accordance with the above revised service bulletins. Aircraft that have complied with Service Bulletin No. 129 prior to Revision 2 or Service Bulletin No. 136 prior to Revision 1, must comply with Rockwell Service Bulletin No. 152 dated May 9, 1975, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas, unless already accomplished. Compliance with Service Bulletin No. 152 is required within 300 hours' time in service after the effective date of this AD. Aircraft that have complied with the bob-weight installation in accordance with Service Bulletin No. 129, prior to Revision 4 dated January 26, 1981, or Service Bulletin No. 136 prior to Revision 3 dated January 26, 1981, must comply with Service Bulletin No. 179 dated January 26, 1981, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas, unless already accomplished. Compliance with the inspection specified in Service Bulletin No. 179 is required as follows: a. Models 500, 500A, 500B, 500U, 520, 560, 560A, 560E, 560F, 680, 680E, 680F, 680F(P), 720, and 500S, through Serial Number 3246 aircraft certificated in all categories which have had the provisions of Service Bulletin No. 129 prior to Revision 4 dated January 26, 1981, or Service Bulletin No. 136 prior to Revision 3 dated January 26, 1981, and Service Bulletin No. 152 dated May 9, 1975, which required the bob-weight installation or an equivalent approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas, accomplished; within 25 hours' time in service after August 9, 1981. When compliance with the repair or strengthening of the supports in accordance with Service Bulletin No. 129, Revision 4, or Service Bulletin No. 136, Revision 3, has been accomplished, the repetitive 25-hour inspection of Service Bulletin No. 179 may be discontinued. b. Model 500S, Serial Numbers 3247 through 3323, aircraft certificated in all categories; within 25 hours' time in service after the effective inspection of Service Bulletin No. 179. This repetitive 25-hour inspection may be discontinued when the repair or strengthening of the supports is accomplished in accordance with Part II of Service Bulletin No. 179. In accordance with FAR 21.197, a ferry flight is permitted to a base where the inspection, repair or modification required by this AD may be accomplished. Copies of these bulletins may be obtained by contacting the Service Manager, Gulfstream American Corporation, 5001 North Rockwell Avenue, Bethany, Oklahoma 73008. Amendment 39-2223 became effective July 2, 1975. Amendment 39-4166 became effective August 9, 1981. This amendment 39-4246 becomes effective November 28, 1981.
2022-14-06: The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2016-25-24: We are adopting a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 series airplanes. This AD requires repetitive general visual inspections for broken battery retaining rods and replacement if necessary. We are issuing this AD to address the unsafe condition on these products.
2021-14-07: The FAA is superseding Airworthiness Directive (AD) 2003-25-01 which applied to certain Eurocopter France (now Airbus Helicopters) Models AS332C, AS332C1, AS332L, AS332L1, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters. AD 2003-25-01 required modifying and re-identifying the hoist operator control unit and replacing certain fuses. This AD was prompted by the identification of multiple errors in the applicable service information for the AS350-series and AS355-series helicopters and of other needed changes. This AD retains certain requirements of AD 2003-25-01, revises the applicability, and requires using corrected service information. This AD also requires reporting certain information and prohibits the installation of an affected hoist until the required actions are accomplished. The FAA is issuing this AD to address the unsafe condition on these products.
76-09-07: 76-09-07 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-2596. Applies to Lockheed-California Company Model L-1011-385 series airplanes, certificated in all categories, that have a Part I configuration center engine S-duct installed (See NOTE). Compliance required as indicated. To prevent possible separation of the center engine S-duct assembly due to failure of the articulating joints, accomplish the following: (a) For airplanes with 4,500 or more hours' time in service on July 14, 1975, comply with paragraphs (c) and (d) within the next 250 hours' time in service after July 14, 1975 unless already accomplished. (b) For airplanes with less than 4,500 hours' time in service on July 14, 1975, comply with paragraphs (c) and (d) within the next 250 hours' time in service after July 14, 1975 or before the accumulation of 4,500 hours' time in service, whichever occurs later, unless already accomplished. (c) Accomplish the following actions in accordance with paragraphs 2A(1) and 2A(2) of Lockheed Alert Service Bulletin 093-54-A019, Revision 2, dated April 20, 1976, or later FAA- approved revision, or an FAA-approved equivalent. (1) Visually inspect all alignments units (leaf springs and spring cartridges) installed at the forward articulating joint of the S-duct assembly for damaged units or worn attachment holes; and, if damage is found, repair, as necessary. (2) Visually inspect the forward ring of S-duct assembly articulating joint, for cracks at all alignment unit locations. If cracks are found, either accomplish the modifications described in paragraph (f), below, or repair, as necessary, before further flight. (d) Accomplish the following actions in accordance with paragraphs 2A(3) or 2A(4) or 2A(5) of Lockheed Alert Service Bulletin 093-54-A019, Revision 2, dated April 20, 1976, or later FAA-approved revision, or an FAA-approved equivalent. (1) Inspect the upper half of the forward ring on the aft side of the S-duct assembly articulating joint for cracks using a dye penetrant method. (2) If cracks are found, either accomplish the modifications described in paragraph (f), below, or repair, as necessary, before further flight. (e) Until the center engine S-duct modifications of paragraph (f) have been accomplished, repeat compliance with the inspection and repair requirements of paragraphs (c) and (d) at intervals not to exceed 800 or 1600 or 2400 hours' time in service since the last inspection, whichever is appropriate, in accordance with the conditions and repetitive inspection interval criteria established by paragraphs 2A(1), 2A(2), and 2A(3) or 2A(4) or 2A(5) of Lockheed Alert Service Bulletin 093-54-A019, Revision 2, dated April 20, 1976, or later FAA-approved revision or an FAA-approved equivalent. (f) The repetitive inspections required by paragraph (e) may be discontinued after the center engine S-duct forward articulating joint is modified in accordance with Part I of Lockheed ServiceBulletin 093-54-019, dated November 4, 1975, or later FAA-approved revision, or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region. (g) Special flight permits may be issued in accordance with FAR's 21.197 and 21.199 to operate airplanes to a base where the inspections required by this AD can be performed. NOTE: For the purpose of determining applicability, Part I configuration center engine S- ducts are identified as those utilizing two leaf spring and twelve spring cartridge type alighment units around the forward articulating joint as described by Lockheed Alert Service Bulletin 093-54- A019. Part I configuration S-duct may be found on, but not necessarily limited to, aircraft serials 1002 through 1037. This supersedes Amendment 39-2256, AD 75-14-07, as amended by Amendments 39- 2299 and 39-2360. Compliance with AD 75-14-07 may be credited for compliance with either the initial inspection requirements of paragraph (a) or (b) and the repetitive inspection requirements of paragraph (e). This amendment becomes effective May 10, 1976.
2016-25-09: We are superseding Airworthiness Directive (AD) 2012-22-02 for certain The Boeing Company Model 747-400, -400D, and -400F series airplanes. AD 2012-22-02 required measuring the web at station (STA) 320 and, depending on findings, various inspections for cracks and missing fasteners, web and fastener replacement, and related investigative and corrective actions if necessary. This new AD requires, for certain airplanes, replacement of the web, including related investigative and corrective actions if necessary. This AD was prompted by a determination that there were no inspection or repair procedures included in AD 2012-22-02 for airplanes with a certain crown frame web thickness. We are issuing this AD to address the unsafe condition on these products.
2004-13-14: This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300 B2 series airplanes; Model A300 B4 series airplanes; and Model A300 B4-600, B4-600R, C4 605R Variant F, and F4-600R (collectively called A300-600) series airplanes; that requires inspection of the label of certain slat friction brakes for correct label wording, and corrective actions if necessary. This AD also provides for optional terminating actions for certain repetitive corrective actions. These actions are necessary to find and fix incorrect labels on the housings of the slat friction brakes, which may lead to the use of unapproved oil in the brakes. Use of unapproved oil could affect the efficiency of the brakes and lead to failure of the brakes to maintain proper slat orientation in the event of a rupture of the slat drive shaft, consequent uncommanded retraction of the slat, and reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
87-25-09: 87-25-09 BOEING: Amendment 39-5791. Applies to Model 767 series airplanes listed in Boeing Alert Service Bulletin 767-25A0092, dated June 18, 1987, certificated in any category. \n\n\tCompliance required as indicated, unless previously accomplished. \n\n\tTo ensure that the entry and service doors cannot become jammed due to a loose mid liner dust cover, accomplish the following: \n\n\tA.\tWithin the next 30 days after the effective date of this AD, and thereafter at intervals not to exceed 90 days, visually inspect the door mid liner for evidence of dust cover disbonding. Disbonding is identified by the dust cover moving away from edges of the reveal. If the dust cover shows evidence of disbonding, prior to further flight, modify the dust cover in accordance with Boeing Alert Service Bulletin 767-25A0092, dated June 18, 1987, or later FAA- approved revisions. \n\n\tB.\tModification of the dust cover in accordance with Boeing Service Bulletin 767- 25A0092, dated June 18, 1987, or later FAA-approved revisions, constitutes terminating action for the repetitive inspection requirements of paragraph A., above. \n\n\tC.\tWithin the next 18 months after the effective date of this AD, modify all dust covers in accordance with Boeing Service Bulletin 767-25A0092, dated June 18, 1987, or later FAA-approved revisions. \n\n\tD.\tAn alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety and which has the concurrence of an FAA Principal Maintenance Inspector, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tE.\tSpecial 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/or modifications required by this AD. \n\n\tAll persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124-2207. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington. \n\n\tThis amendment becomes effective January 19, 1988.
2016-25-12: We are adopting a new airworthiness directive (AD) for all M7 Aerospace LLC Models SA226-AT, SA226-T, SA226-T(B), SA226-TC, SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A), SA227-CC, SA227-DC (C-26B), and SA227-TT airplanes. This AD was prompted by corrosion and stress corrosion cracking of the pitch trim actuator upper attach fittings of the horizontal stabilizer front spar. This AD requires repetitive inspections with replacement of fittings as necessary. We are issuing this AD to correct the unsafe condition on these products.