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84-04-01: 84-04-01 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-4815. Applies to Lockheed Model L-1011-385 series airplanes, certificated in all categories. Compliance required as indicated unless previously accomplished. To prevent the possibility of electrical arcing in the cockpit windshield and side window heating electrical wire bundle, accomplish the following: A. Within 300 flight hours after the effective date of this AD, perform the aircraft wiring inspection and modification, if required, in accordance with Part 2, Accomplishment Instructions, in Lockheed-California Company L-1011 Service Bulletin 093-30-055, dated July 1, 1983, or later revision approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. NOTE: Airplanes previouslyinspected in accordance with the procedures specified in Lockheed L-1011 Service Bulletin 093-30-055, dated July 1, 1983, or in accordance with alternate inspection procedures since June 6, 1983, approved by an FAA Principal Maintenance Inspector (PMI), are considered to comply with the inspection requirements of this AD. 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 these documents from the manufacturer may obtain copies upon request to Lockheed-California Company, P.O. Box 551, Burbank, California 91520, Attention: Commercial Support Contracts, Dept. 63-11, U-33, B-1. These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. This amendment becomes effective February 27, 1984.
2019-08-10: We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (Bell) Model 206A, 206B, 206L, 206L- 1, 206L-3, 206L-4, and 407 helicopters. This AD requires inspecting and cleaning the oil supply restrictor (restrictor) to the freewheel assembly. This AD was prompted by reports of a blocked oil line restrictor in the freewheel lubrication system. The actions of this AD are intended to address an unsafe condition on these products.
79-05-04: 79-05-04 BOEING: Amendment 39-3431. Applies to Boeing 747-200 series airplanes, Serial Numbers 20237, 20238, 20239, 20556, 20557, 21054, 21140, 21189, 21190, and 21237, equipped with auxiliary fuel tanks Number 1 and Number 4. \n\tUnless modified in accordance with Boeing Service Bulletin 747-28-2067 dated November 11, 1977, or Boeing Alert Service Bulletin 747-28-A2091, Revision 1, dated February 5, 1979, or later FAA approved revisions, accomplish the following: \n\tA.\tDiscontinue immediately the use of auxiliary fuel tanks Number 1 and Number 4; \n\tB.\tDrain fuel from those tanks; and \n\tC.\tOpen and collar the associated tank pump circuit breakers. \n\tEquivalent inspections and repairs may be used when approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. Compliance with the revised alert bulletin requirements is considered satisfactory terminating action for this Airworthiness Directive. \n\tThemanufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). \n\tAll persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108. \n\n\tThis amendment becomes effective March 15, 1979, and was effective earlier for all recipients of the telegram dated December 22, 1978.
89-18-13: 89-18-13 BRITISH AEROSPACE: Amendment 39-6309. (Docket No. 89-NM-24-AD) Applicability: Model DH/HS/BH/BAe 125 series airplanes certificated in any category, equipped with Sundstrand Turbomach Titan Gas Turbine Auxiliary Power (APU) Unit, Model T- 62T Series, installed in the aft equipment compartment of the airplane. NOTE: Installation of the subject APU's has been in accordance with, but are not limited to, the following Supplemental Type Certificates (STC): SA674CE SA1143EA SA1176EA SA1196EA SA440NE SA1173EA SA4710SW SA1923SW This AD applies to all Sundstrand Turbomach Titan APU installations in the aft equipment compartment. Compliance: Required as indicated unless previously accomplished. To prevent a fire in the aft equipment compartment, puncture of the aft pressure bulkhead, and severance of the control cables, due to an uncontained APU rotor failure, accomplish the following: A. Within the next 10 days after the effective date of this AD: 1. Revise the Limitations Section in the FAA-approved Airplane Flight Manual (AFM) Supplement to include the following statement. This may be accomplished by inserting a copy of this AD in the AFM Supplement Limitations Section: "OPERATION OF THE APU DURING FLIGHT IS PROHIBITED, EXCEPT DURING AN EMERGENCY." 2. Install a placard next to the APU start switch in the cockpit to state: "OPERATION OF THE APU DURING FLIGHT IS PROHIBITED, EXCEPT DURING AN EMERGENCY." 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, Northwest Mountain Region, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it 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 for the accomplishment of modifications required by this AD. This amendment (39-6309, AD 89-18-13) becomes effective on September 28, 1989.
87-23-01: 87-23-01 HEATH TECNA: Amendment 39-5759. Applies to Boeing Model 747 airplanes, certificated in any category, that have been modified in accordance with Supplemental Type Certificate SA2365NM, listed in Heath Tecna Service Bulletin 74000-25-007, dated March 6, 1987. Compliance required as indicated, unless previously accomplished.\n \n\tTo minimize fire hazard caused by chafing of ceiling light wire bundles, accomplish the following:\n \n\tA.\tWithin 60 days after the effective date of this AD, inspect lighting wire bundles which rest atop the Heath Tecna "Superbins" for evidence of damage and chafing, and repair, if necessary, before further flight; and accomplish either 1. or 2., below: \n\n\t\t1.\tInstall spacers to protect lighting wire bundles from chafing in accordance with Heath Tecna Service Bulletin 74000-25-007, dated March 6, 1987, or later FAA-approved revision. \n\n\t\t2.\tTrim the outboard edges of the ceiling panels in accordance with paragraph 2C of Heath Tecna Service Bulletin 74000-25-007, dated March 6, 1987, or later FAA-approved revision. \n\n\tB.\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, FAA, Northwest Mountain Region. \n\n\tC.\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 the modification 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 Heath Tecna Aerospace Company, 19819 84th Avenue South, Kent, Washington 98032. 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 98108.\n \n\tThis amendment becomes effective December 10, 1987.
2019-08-02: 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 of cracking in the frame web, frame integral inboard chord, and fail-safe chord on multiple airplanes in multiple locations between stringers S-10 and S- 17 above the passenger floor, in addition to an evaluation by the design approval holder (DAH) indicating that certain fuselage frame splices are subject to widespread fatigue damage (WFD). This AD requires repetitive inspections of certain fuselage upper frames, side frames, fail-safe chords, inboard chords, frame webs, and stringers; an inspection for open tooling holes and the presence of repairs in certain inspection zones; and applicable on-condition actions. We are issuing this AD to address the unsafe condition on these products.
87-07-03: 87-07-03 BOEING: Amendment 39-5577. Applies to Boeing Model 737 airplanes, equipped with an aft airstair on which the detent plate modification described in Boeing Service Bulletin 737-52-1083, dated June 4, 1982, or later revisions, has been incorporated; certificated in any category. Compliance is required within one year after the effective date of this AD. \n\n\tTo ensure usability of the aft airstair exit in the event of an emergency evacuation, accomplish the following, unless previously accomplished: \n\n\tA.\tRemove the aft airstair operating handle detent plate which has been modified in accordance with Boeing Service Bulletin 737-52-1083, and install an unmodified Boeing P/N 65- 60510-1 aft airstair operating handle detent plate. \n\n\tB.\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, FAA, Northwest Mountain Region. \n\n\tC.\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 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 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 the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.\n \n\tThis amendment becomes effective April 13, 1987.
83-06-02: 83-06-02 MCDONNELL DOUGLAS: Amendment 39-4588. Applies to McDonnell Douglas Model DC-9-80 series airplanes fuselage numbers through 1086, certificated in all categories. Compliance required as indicated, unless previously accomplished. \n\n\tTo prevent possible discharge of fire extinguishing agent into an unselected area, accomplish the following within 300 flight hours time in service after the effective date of this AD: \n\n\tA.\tInspect for proper installation of electrical connection of plugs P1-70, P1-71, and P1-72 to Firex bottle No.1 and plugs P1-73, P1-74, and P1-75 to Firex bottle No. 2 and inspect for proper clamping method and correct if necessary, in accordance with McDonnell Douglas DC-9-80 Alert Service Bulletin A26-13, dated February 2, 1983, or Revision 1, dated February 3, 1983, or later revisions approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tB.\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\tC.\tAlternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Los Angeles Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tAll persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to McDonnell Douglas Corporation, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Director, Publications and Training, C1-750 (54-60). These documents also may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Los Angeles Aircraft Certification Office, 4344 Donald Douglas Drive, Long Beach, California. \n\n\tThis amendment becomes effective April 4, 1983.
2019-07-07: We are adopting a new airworthiness directive (AD) for various Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB- BK117 and Model BO-105 helicopters. This AD requires removing the swashplate bellows (bellows) and repetitively inspecting the swashplate assembly. This AD was prompted by reports of loose and missing clamps installed on bellows. The actions of this AD are intended to detect and prevent an unsafe condition on these products.
83-18-01: 83-18-01 AIR TRACTOR: Amendment 39-4717. Applies to Model AT-300, AT-301, AT-302 (Serial Numbers 0001 through 0240) airplanes certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent failure of the vertical fin front spar fuselage attach fittings, accomplish the following: a) On airplanes having less than 2,000 hours time-in-service on the effective date of this AD, within the next 25 hours time-in-service, or 100 hours time-in-service since the last inspection per Snow Engineering Company Service Letter No. 26, dated February 2, 1978, whichever occurs later, and within each 100 hours time- in-service thereafter, inspect the vertical fin front spar fuselage attach fittings using dye penetrant procedures at the locations specified in Snow Engineering Company Service Letter No. 26, dated February 2, 1978. b) On airplanes having more than 2,000 hours time-in-service on the effective date of this AD within the next25 hours time-in-service, or 50 hours time-in-service since compliance with paragraph a), or the last inspection per Snow Engineering Company Service Letter No. 26 dated February 2, 1978, whichever occurs later, and each 50 hours time-in-service thereafter, inspect the vertical fin front spar fuselage attach fittings using dye penetrant procedures at the locations specified in Snow Engineering Service Letter No. 26, dated February 2, 1978. c) Prior to further flight, replace any cracked fittings found during the inspections required by paragraphs a) and b) of this AD with a new 10398-3 fitting in accordance with Snow Engineering Company Service Letter No. 47, dated February 12, 1983. d) On or before December 31, 1983, or upon reaching 2,000 hours time-in-service, whichever occurs later, replace existing sheet metal vertical fin front spar fuselage attach fittings with a new part number 10398-3 fitting, in accordance with Snow Engineering Company Service Letter No. 47 dated February 12, 1983. e) The other requirements of this AD are no longer required when the 10398-3 fittings are installed. f) The interval between the repetitive inspections required by this AD may be adjusted up to 10 percent of the specified interval to allow accomplishing these inspections concurrent with other scheduled maintenance of the airplane. g) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD can be accomplished. h) Any equivalent means of compliance with this AD may be used, if approved, by the Manager, Aircraft Certification Division, ASW-100, FAA, P.O. Box 1689, Fort Worth, Texas 76101. This amendment becomes effective on September 6, 1983.