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91-06-03: 91-06-03 BOEING: Amendment 39-6923. Docket No. 90-NM-152-AD. \n\n\tApplicability: Model 747 series airplanes, line numbers 001 through 045, certificated in any category. \n\n\tCompliance: Required as indicated, unless previously accomplished. \n\n\tTo prevent sudden cabin pressure loss, accomplish the following: \n\n\tA.\tWithin the next 500 flight cycles after the effective date of this AD, or prior to the accumulation of 12,000 total flight cycles, whichever occurs later, perform a detailed visual inspection for cracks of the Section 42 fuselage frame web at the stringer cutout from body station (BS) 540 to BS 920, Stringer (S) 8L to S-8R. Repeat this inspection thereafter at intervals not to exceed 3,000 flight cycles. \n\n\tB.\tIf cracking is found as the result of the inspections required by paragraph A. of this AD, prior to further flight, repair the fuselage frame web in accordance with the Boeing 747 Structural Repair Manual (SRM), Section 53-10-04, Figure 4 or Figure 35; or in a manner approved by the Manager, Seattle Aircraft Certification Office, FAA, Transport Airplane Directorate. \n\n\tC.\tAn 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, Seattle Aircraft Certification Office (ACO), Transport Airplane Directorate. \n\n\tNOTE: The request should be submitted directly to the Manager, Seattle ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Seattle ACO. \n\n\tD.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. \n\n\tThis amendment (39-6923, AD 91-06-03) becomes effective on April 8, 1991.
2016-20-09: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2A12 (CL-601 Variant), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by a report that a potential chafing condition exists between the negative-G fuel feed drain line of the auxiliary power unit (APU) and its surrounding structure and components. This AD requires, for certain airplanes, a detailed inspection for chafing conditions of the negative-G fuel feed drain line of the APU, and corrective actions if necessary. For certain other airplanes, this AD requires replacement of the APU negative-G fuel feed tube assembly and the drain line. We are issuing this AD to address the unsafe condition on these products.
86-07-07: 86-07-07 GARLICK HELICOPTERS, HAWKINS AND POWERS AVIATION, INC.. INTERNATIONAL HELICOPTERS, INC., PILOT PERSONNEL INTERNATIONAL, INC., WILCO AVIATION: Amendment 39-5274. Applies to Model UH-1B helicopters modified by Garlick Helicopters, Hawkins and Powers Aviation, Inc., International Helicopters, Inc., Pilot Personnel International, Inc., and Wilco Aviation certified in any category that have a Bell Helicopter Textron, Inc., Part Number (P/N) 204-011-128-1 universal on the main rotor pitch change link. Unless already accomplished, compliance is required within 15 days after the effective date of this AD or the next 10 hours time in service, whichever occurs first. To prevent loss of main rotor control, accomplish the following: (a) Inspect the P/N 204-011-128-1 universal assembly on the pitch change control link of the main rotor for Arko Precision Machinists' supplier P/N "DW-6ZZ." If found, replace before further flight with a serviceable assembly. (b) If the P/N "DW-6ZZ" is missing or cannot be seen, apply MIL-G-81322 grease to each of the two grease fittings on the universal. If the grease does not purge past the seals, replace the P/N 204-011-128-1 universal before further flight with a serviceable assembly. (c) P/N 212-010-412-1 universal is an acceptable alternate replacement for P/N 204-011-128-1 and may be considered interchangeable. (d) Any alternate method of compliance which provides an equivalent level of safety with this AD may be used when approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas 76106. This amendment becomes effective April 25, 1986.
2004-13-04: This amendment adopts a new airworthiness directive (AD), applicable to certain Short Brothers Model SD3-SHERPA series airplanes, that requires a repetitive detailed inspection of the stub wing shear decks for corrosion and abnormal wear on and around the retaining pin in the main landing gear (MLG) forward pintle pin; and corrective action, if necessary. This AD also provides an optional terminating action. These actions are necessary to detect and correct corrosion and abnormal wear to the top and bottom shear decks, which could result in damage to the MLG and consequent reduced controllability of the airplane on landing. This action is intended to address the identified unsafe condition.
87-15-51: 87-15-51 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-5701. Applies to Lockheed-California Model L-1011-385 series airplanes, certificated in any category, which have stainless steel bushings installed in the retract lugs of the left and/or the right main landing gear (MLG) shock strut cylinder. Compliance required as indicated, unless previously accomplished. To detect cracks and prevent structural failure of the MLG shock strut cylinder, accomplish the following: A. Within 10 days after the effective date of this AD, unless previously accomplished within the last 400 landings, and thereafter at intervals not to exceed 400 landings, perform an ultrasonic inspection of the inboard retract lugs of both the left and right MLG shock strut cylinder, following the procedure specified in Section 2, Accomplishment Instructions, of Lockheed-California L-1011 Service Bulletin 093-32-A211, Revision 1, dated October 26, 1982, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. B. Any MLG shock strut cylinders that are found cracked must be repaired or replaced prior to further flight, in a manner approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. C. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the inspection requirements of this AD. All persons affected by this directive who have not already received the appropriate service document from the manufacturer, may obtain copies upon request to Lockheed-California Company, P.O. Box 551, Burbank, California 91520, Attention: Commercial Order Administration, Dept, 65-33, U-33, B-1. This document may be examined at theFAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or 4344 Donald Douglas Drive, Long Beach, California. This amendment, 39-5701, becomes effective August 24, 1987, as to all persons, except those persons to whom it was made immediately effective by telegraphic AD T87-15-51 issued July 22, 1987.
2022-02-10: The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X, FALCON 900EX, and FALCON 2000EX airplanes. This AD was prompted by a report of an improper heat treatment process applied during the manufacturing of certain titanium screws. This AD requires replacement of certain titanium screws, 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.
94-17-15: This amendment adopts a new airworthiness directive (AD) that is applicable to The Enstrom Helicopter Corporation (Enstrom) Model F-28A, F-28C, F-28C2, F-28F, 280, 280C, 280F, and 280FX series helicopters. This action requires initial and repetitive inspections for delamination of the main rotor feathering elastomeric Lamiflex bearing (Lamiflex bearing). This amendment is prompted by several reported failures of the Lamiflex bearing. The actions specified in this AD are intended to prevent failure of the Lamiflex bearing, abnormal vibrations in the airframe and flight control system, and subsequent loss of control of the helicopter.
2004-12-18: This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120 series airplanes, that requires installing three new vertical cargo nets in cargo-configured cabins. This action is necessary to prevent significant movement of cargo during operation, which could result in loss of control of the airplane or injury to the flightcrew. This action is intended to address the identified unsafe condition.
2004-06-51: This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2004-06-51, which was sent previously to all known U.S. owners and operators of Boeing Defense and Space Group (Boeing) Model 234 helicopters by individual letters. This AD requires, before further flight, inspecting the upper shaft extension for a crack and modifying the aft vertical shaft assembly (assembly). Thereafter, this AD requires, before the first flight of each day, inspecting the upper shaft extension for any crack. If any crack is found during any of the inspections, replacing the assembly with an airworthy assembly is required before further flight. This amendment is prompted by the discovery of a crack in the upper shaft extension of an assembly. The actions specified by this AD are intended to detect a crack in the upper shaft extension, which could result in catastrophic failure of the assembly and subsequent loss of control of the helicopter.
2016-20-11: We are superseding Airworthiness Directive (AD) 2014-12-06 for certain Airbus 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); and Airbus Model A310 series airplanes. AD 2014-12-06 required repetitive ultrasonic or detailed inspections of the external area of the aft cargo door sill beam for cracking, and repair if necessary, and provided an optional one-time high frequency eddy current (HFEC) inspection that would terminate the repetitive inspections. This new AD requires the previously optional terminating HFEC inspection, and requires that it be done repetitively. This AD was prompted by findings of multiple fatigue cracks in the aft cargo door that indicated the need for additional, repetitive, HFEC inspections. We are issuing this AD to address the unsafe condition on these products.
2018-09-10: We are adopting a new airworthiness directive (AD) for all CFM International S.A. (CFM) Model CFM56-7B engines. This AD requires initial and repetitive inspections of the concave and convex sides of the fan blade dovetail to detect cracking and replacement of any blades found cracked. This AD was prompted by a recent engine failure due to a fractured fan blade, that resulted in the engine inlet cowl disintegrating and debris penetrating the fuselage, causing a loss of pressurization, and prompting an emergency descent. We are issuing this AD to address the unsafe condition on these products.
84-23-04: 84-23-04 FOKKER B.V.: Amendment 39-4944. Applies to Model F27 airplanes as indicated in the applicability statement of each service bulletin listed below. Compliance is required within the time interval specified in each of the following paragraphs, unless already accomplished: A. To assure proper operation of the portable fire extinguishers, within 90 days after the effective date of this AD, inspect the cartridge holders in accordance with Fokker Service Bulletin F27/26-18 dated September 28, 1981 (reference Walter Kidde Service Bulletin 26-20-240, revised April 28, 1981). B. To assure that proper rubber sleeves have been installed in the fuel vent system, within 90 days after the effective date of this AD, inspect the fuel tank ventilation system in accordance with Fokker Service Bulletin F27/28-55 dated April 15, 1981. Replace unsatisfactory parts in accordance with the service bulletin. C. To eliminate leakage from the fluid dampers in the main and nose landinggear actuating rams, within 180 days after the effective date of this AD, modify the actuating rams in accordance with Fokker Service Bulletin F27/32-143 dated May 22, 1981, or in accordance with Dunlop Service Bulletins 36-262 and 36-263 as an alternate means of compliance. 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/or modifications required by this AD. This amendment becomes effective December 7, 1984.
2004-12-08: The FAA is superseding an existing airworthiness directive (AD) for IAE AG V2500-A1, V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 turbofan engines. That AD currently requires revisions to the Airworthiness Limitations Section (ALS) and Maintenance Scheduling Section (MSS) of the Instructions for Continued Airworthiness (ICA), located in the Time Limits Manual (Chapter 05-10-00) of the Engine Manuals, to include required enhanced inspection of selected critical life-limited parts at each piece-part exposure. This action would add critical life-limited parts for enhanced inspection. This action is prompted by additional focused inspection procedures that have been developed by the manufacturer. The actions specified by this AD are intended to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
91-04-07: 91-04-07 BRITISH AEROSPACE: Amendment 39-6899. Docket No. 90-NM-230-AD. Applicability: Model BAe 146-100A, -200A, and -300A series airplanes, as listed in British Aerospace Service Bulletin 24-69-70484A, Revision 1, dated July 25, 1990, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent loss of all AC electrical power, accomplish the following: A. Within 90 days after the effective date of this AD, in the AC powered hydraulic pump electric power circuit, remove the remote controlled circuit breaker (RCCB), Part Number SM601BA40A12 or SM601BA40A13, and replace it with a modified RCCB, Part Number SM601BA40A14, in accordance with British Aerospace Service Bulletin 24-69-70484A, Revision 1, dated July 25, 1990. B. 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, Transport Airplane Directorate. NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113. C. Special flight permits may be issued in accordance with FAR 21.197 and 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 already received the appropriate service documents from the manufacturer may obtain copies upon request to British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041-0414. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington. This amendment (39-6899, AD 91-04-07) becomes effective on March 22, 1991.
74-24-08: 74-24-08 LOCKHEED-GEORGIA COMPANY: Amendment 39-2020. Applies to all Lockheed Models 382, 382B, 382E, 382F, and 382G airplanes certificated in all categories. Compliance required as indicated below for aircraft with serial numbers below 4559 unless already accomplished. A. For aircraft with 2000 hours or more time in service: This inspection is to be accomplished at the first convenient maintenance period, but not to exceed 200 hours time in service after the effective date of this airworthiness directive. B. On aircraft with less than 2000 hours time in service, this inspection is to be accomplished prior to the accumulation of 2000 hours or 200 hours time in service after the effective date of this airworthiness directive, whichever is greater. Accomplish the following: Inspect and replace as required the engine throttle cables located at F.S. 245 upper and lower pulleys and at all engine horsecollar pulleys on the front wing beam as defined and in accordance with Lockheed Service Bulletin A382-175 or later approved revision or an equivalent inspection procedure approved by the Chief, Engineering and Manufacturing Branch, Southern Region. This amendment is effective November 27, 1974.
2004-12-15: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 777-200 series airplanes, that requires a one-time general visual inspection of wire bundles routed aft of electrical disconnect panel AC2162 to determine their installation and separation, and corrective actions, if necessary. This action is necessary to prevent damage to the stabilizer cutout circuit wires in the bundles due to contact between the bundles and the adjacent galley water drain tube and hydraulic tubes, which, if followed by an active fault in the stabilizer command circuit, could result in undesired stabilizer motion that cannot be stopped, and could lead to loss of pitch control and loss of control of the airplane. This action is intended to address the identified unsafe condition.
2004-12-11: The FAA adopts a new airworthiness directive (AD) for all Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. This AD requires you to check the airplane logbook to determine whether certain inboard and outboard flap flexshafts have been replaced with parts of improved design. If the parts of improved design are not installed, you are required to replace certain inboard and/or outboard flap flexshafts with the parts of improved design. The pilot is allowed to do the logbook check. If the pilot can positively determine that the parts of improved design are installed, no further action is required. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. We are issuing this AD to prevent rupture of the flap flexshafts due to corrosion, which could cause the flap system to become inoperable.
89-15-10: 89-15-10 TEXTRON LYCOMING: Amendment 39-6377. Final copy of Priority Letter AD. Applicability: Model TIO-540-AE2A engines (with serial numbers up to and including L9064-61A) installed in Piper PA-46-350P airplanes certified in any category. Compliance: Required within 5 hours in service after the effective date of this AD unless already accomplished. To prevent engine roughness and loss of engine power, accomplish the following: (a) Perform a fuel leak check at the upper deck left nozzle vent manifold or at the fuel pump vent hose check valve in accordance with Appendix I and Appendix II of this AD. Observe if any fuel emerges at the disconnected line with the aircraft emergency boost pump operating. If fuel is observed, the engine pump diaphragm is considered defective. Prior to further flight, replace pump with a new or serviceable pump and repeat the above leak check. (b) Remove tee fitting P/N AN-825-4 from the engine fuel pump vent and install restrictor typetee fitting P/N 02A21171 (Piper P/N 766-224) in accordance with Appendix I and Appendix II of this AD. (c) Aircraft may be ferried in accordance with the provisions of FAR's 21.197 and 21.199 to a base where the AD can be accomplished. (d) Upon submission of substantiating data by an owner or operator through an FAA Airworthiness Inspector, an alternate method of compliance with the requirements of this AD or adjustments to the compliance schedule specified in this AD may be approved by the Manager, New York Aircraft Certification Office, Engine and Propeller Directorate, Aircraft Certification Service, Federal Aviation Administration, Room 202, 181 South Franklin Avenue, Valley Stream, New York 11581. This amendment (39-6377, AD 89-15-10) becomes effective on November 30, 1989, as to all persons except those persons to whom it was made immediately effective by priority letter AD No. 89-15-10, issued on July 26, 1989, which contained this amendment. APPENDIX I NOTE: TEXTRON Lycoming Service Bulletin No. 487, dated July 7, 1989, pertain to these inspections. APPENDIX II NOTE: PIPER Service Bulletin No. 915, dated July 8, 1989, pertain to these inspections.
89-02-11: 89-02-11 SHORT BROTHERS: Amendment 39-6110. Applicability: All Model SD3-60 series airplanes, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent loss of engine power during flight, accomplish the following: A. Prior to the accumulation of 1,200 flight hours or within 60 days after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 1,200 flight hours, inspect the engine power control cables for broken wires, in accordance with Shorts Service Bulletin SD360-76-08, dated May 9, 1988, or Revision 1, dated October 12, 1988. B. If four or more broken wires are detected in any 24-inch length of cable during the inspection required by paragraph A., above, replace the cable with an airworthy cable assembly prior to further flight, and repeat the inspections required by paragraph A., at intervals not to exceed 1,200 flight hours. C. The repetitive inspectionsrequired by paragraphs A. and B., above, may be terminated following completion of the replacement of the power control cables and pulleys, in accordance with Shorts Model SD3-60 Service Bulletin SD360-76-09, dated October 1988. D. 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. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Standardization Branch, ANM-113. 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/or modifications required by this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies uponrequest to Short Brothers, PLC, Service Representative, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3702. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Transport Airplane Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6110, AD 89-02-11) becomes effective February 17, 1989.
87-24-13: 87-24-13 SHORT BROTHERS PLC: Amendment 39-5783. Applies to Model SD3-60 airplanes equipped with a left-hand garment bag stowage unit (Modification 7063), certificated in any category. Compliance required within 90 days after the effective date of this AD, unless previously accomplished. To remove a restriction to aisle width, due to the left-hand garment bag stowage unit, accomplish the following: A. Remove the left-hand garment bag stowage unit, in accordance with Short Brothers, Service Bulletin SD360-25-34, dated December 1986, or modify the left-hand garment bag stowage unit, in accordance with Short Brothers Service Bulletin SD360-25-35, dated March 1987. B. An 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, Standardization Branch, ANM-113, FAA, Northwest Mountain Region. C. 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 the modifications required by this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Short Brothers PLC, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3702. These documents 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 January 14, 1988.
2016-20-07: We are adopting a new airworthiness directive (AD) for certain Fokker Services B.V. Model F28 airplanes. This AD was prompted by reports indicating that the main landing gear (MLG) could not be extended and locked down during approach. This AD requires inspection of the restrictor check valve filter screens to detect any degraded or failed filter screens, and installation of serviceable parts. We are issuing this AD to address the unsafe condition on these products.
91-15-06: 91-15-06 MCDONNELL DOUGLAS: Amendment 39-7069. Docket No. 90-NM-279-AD. \n\n\tApplicability: All Model DC-8F, DC-8-61F, -62F, -63F, -71F, -72F, and -73F series airplanes, certificated in any category. \n\n\tCompliance: Required as indicated, unless previously accomplished. \n\n\tTo prevent inadvertent opening of the forward upper cargo door in flight, a condition which could result in loss of pressurization and reduced controllability of the aircraft, accomplish the following: \n\n\tA.\tWithin four months after the effective date of this AD, and thereafter at intervals not to exceed one year, perform magnetic particle inspections on the cargo door latch spool fitting attach bolts or replace the non-Inconel (H-11) cargo door latch spool fitting attach bolts with new bolts, in accordance with the Accomplishment Instructions for Phase 2 of McDonnell Douglas DC-8 Service Bulletin 52-82 Revision 3, dated October 19, 1990 (hereafter referred to as "the Service Bulletin"). \n\n\t\t1.\tIf a bolt does not pass the magnetic particle inspection, prior to further flight, replace it with a new bolt and seal in accordance with the Service Bulletin. \n\n\t\t2.\tIf a bolt passes the magnetic particle inspection, prior to further flight, reinstall the bolt and seal in accordance with the Service Bulletin. \n\n\tB.\tThe inspections required by paragraph A. of this AD are not required for Inconel bolts, part numbers RA21026-7-23, 77711-7-24, 3D0031-7-24, VCC0098-7-24, 1489-7-24, or 577-7-24. \n\n\tC.\tWithin two years after the effective date of this AD, replace all non-Inconel cargo door latch spool fitting attach bolts with Inconel bolts, part numbers RA21026-7-23, 77711-7-24, 3D0031-7-24, VCC0098-7-24, 1489-7-24, or 577-7-24, in accordance with the Service Bulletin. \n\n\tInstallation of these Inconel bolts constitutes terminating action for the requirements of paragraph A. of this AD. \n\n\tD.\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanesunpressurized to a base for the accomplishment of the requirements of this AD. \n\n\tE.\tAn alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. \n\n\tNOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Los Angeles ACO. \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 McDonnell Douglas Corporation, P.O. Box 1771, Long Beach, California 90846-0001, Attention: Business Unit Manager, Technical Publications, C1-HCW (54-60). These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California. \n\n\tThis amendment (39-7069, AD 91-15-06) becomes effective on August 16, 1991.
75-27-05: 75-27-05 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: Amendment 39- 2477. Applies to Alouette helicopter Models SE-3130, SE-313B, SA-3180, SA-318C, SA-315B, SE-3160, SA-316B, SA-319B, and SA-316C incorporating 3130 series main rotor blade(s) with serial number 9554 and lower, and 3160 series main rotor blade(s) with serial number 6999 and lower. Compliance is required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished in accordance with Lama Service Bulletin No. 01.04 for the Model SA- 315B, or Alouette Service Bulletin No. 01.30 for the other designated models. To prevent failure of the main rotor blades due to corrosion, inspect the blade spar in the section between the attachment fitting and root end rib for corrosion, repair as necessary, and return to service, in accordance with paragraphs 2 B(2), 2 B(3), 2 B(4) and 2 C of SGAC- approved Alouette Service Bulletin No. 01.30, as amended August 30, 1972, or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region. This amendment becomes effective on January 19, 1976.
71-06-01: 71-06-01 BEECH: Amdt. 39-1170 as amended by Amendment 39-1222 is further amended by Amendment 39-1321. Applies to all 99 series airplanes (Serial Numbers as applicable). Compliance: Required as indicated, unless already accomplished. To preclude the occurrence of faults, failures and improper operation, accomplish the following: A) On all 99 series airplanes (Serial Numbers U-1 through U-95, U-97 through U- 127, U-130 through U-133, U-135 and U-136) within the next 100 hours' time-in-service after the effective date of this AD, modify the flap position selector in accordance with Beechcraft Service Instruction 0328-158 or later FAA approved revision, or by any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri. B) On all 99 series airplanes (Serial Numbers U-1 through U-133, U-135 and U- 136) within the next 100 hours' time-in-service after the effective date of this AD, modify the landing gear indicator and warning device in accordance with Beechcraft Service Instruction 0313-158 and 0318-350, or later FAA approved revision, or by any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri. C) On all 99 series airplanes (Serial Numbers U-2 through U-103, U-105 through U- 133, U-135 and U-136) within the next 75 hours' time-in-service after the effective date of this AD, modify the gear selector panel in accordance with Beechcraft Service Instructions 0299-395 or later FAA approved revision, or by any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri. D) On all 99 series airplanes (Serial Numbers U-1 through U-103 and U-106 through U-135) within the next 75 hours' time-in-service after the effective date of this AD, modify the instrument static air system in accordance with Beechcraft Service Instruction 0291- 394, Rev. 1, or later FAA approved revision, or by any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri. E) On Models 99 and 99A (Serial Numbers U-1 through U-136) airplanes within the next 100 hours' time-in-service after the effective date of this AD (March 16, 1971), inspect and test the electrical power distribution system in accordance with Beechcraft Service Instructions 0348-351 or later FAA approved revision, or by any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri. Amendment 39-1170 became effective March 16, 1971. Amendment 39-1222 became effective June 3, 1971. This Amendment 39-1321 becomes effective October 19, 1971.
87-14-02: 87-14-02 TELEDYNE CONTINENTAL MOTORS (TCM): Amendment 39-5732. Applies to IO-520, IO-550, and TSIO-520 series engines with starter adapter shaftgear P/N 649343, a freon compressor, and 25 hours or less time in service installed on the following engines: New Engines Serial Numbers IO-520BB S/N 578239 thru 578250, 578255 thru 578261, 578271, 578272 IO-550B S/N 675329, 675330, 675334 thru 675336 TSIO-520UB S/N 527091, 527093 TSIO-520BE S/N 528383, 528389 IO-520BA S/N 249568 thru 249570, 249588 thru 249593 IO-520BB S/N 248585, 248586, 274505 thru 274520, 274522 thru 274526, 274529, 274532, 274536, 274537, 274540, 274544, 274545, 274549, 274550, 274552, 274554 IO-550B S/N 249124 thru 249130, 249132 Rebuilt Engines Serial Numbers TSIO-520UB S/N 248867, 248869 TSIO-520LB S/N 237242, 237244, 237247, 241909, 241910 TSIO-520WB S/N 274004 thru 274008, 274012 thru 274018 TSIO-520BE S/N 273505 thru 273510 Compliance is required before further flight unless already accomplished. To prevent possible starter adapter shaftgear failure, which could result in loss of lubricating oil and subsequent complete loss of engine power, accomplish the following: (a) Determine if the installed engine(s) has a freon compressor installed. (1) If no freon compressor is installed, no further action is required, proceed to paragraph (f). (b) Engines in compliance with priority letter AD 87-12-12, but not included in the engine serial numbers listed in this AD, may reinstall the air conditioner drive belt. Proceed to paragraph (f). (c) Determine the time in service of the starter adapter shaftgear P/N 649343 for each installed engine. If the time in service is greater than 25 hours with the freon compressor drive belt installed, no further action is required. Proceed to paragraph (f). If the time in service is less than 25 hours, accomplish paragraphs (d) or (e) as applicable. (d) If the engine was new when installed, remove the starter adapter assembly P/N 642087, and return to the manufacturer for replacement. Install the replacement assembly, and proceed to paragraph (f). (e) If the installed engine is a rebuilt engine, gain access to the drive sheave mounted on the rear of the starter adapter shaftgear. Determine, using a light and mirror, if the drive sheave attaching nut is castellated. (1) If the nut is castellated with a cotter key installed, no further action is required, proceed to paragraph (f). (2) If a steel lock nut is installed, inspect the center of the shaft to determine if the shaft has drilled cotter key holes (See TCM Service Bulletin M87-13, dated 29 June 1987, Figure 1). (i) If the shaft has drilled holes, no further action is required, proceed to paragraph (f). (ii) If the shaft is undrilled, remove the starter adapter assembly P/N 642087 and return to the manufacturer for replacement. Install the replacement assembly. (f) Make appropriate logbook entry showing compliance with this AD. NOTES: 1. Contact TCM for shipping instructions. 2. When replacing the starter adapter assembly, retain the drive sheave for reinstallation on new assembly. 3. TCM Service Bulletin M87-13, dated 29 June 1987, refers to this subject. Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Atlanta Aircraft Certification Office, Federal Aviation Administration, Central Region, 1669 Phoenix Parkway, Suite 210, Atlanta, Georgia 30349. Priority letter AD 87-14-02 superseded priority letter AD 87-12-12. This amendment 39-5732 becomes effective October 5, 1987, as to all persons except those persons to whom it was made immediately effective by priority letter AD No. 87-14-02, issued July 8, 1987, which contained this amendment.