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80-02-11: 80-02-11 DeHAVILLAND: Amendment 39-3672. Applies to DHC-7 airplanes, S/N 1 through 13 inclusive, certificated in all categories. Compliance required as indicated, unless already accomplished. To prevent possible landing gear support structure failure due to looseness of the main landing gear frame attachment bolts, accomplish the following: 1. Within the next 25 hours in service after the effective date of this AD, unless previously accomplished within the last 295 hours in service, inspect the main landing gear frame bolts, P/N MS21250H10042, for evidence of improper torque. 2. If evidence of improper torque is found at any bolt location, a. cut an access hole at all four bolt locations as detailed in DeHavilland Service Bulletin No. 7-54-4, ACCOMPLISHMENT INSTRUCTIONS, Page 2, paragraphs 1 and 2. Retorque all bolts to 1400-1650 inch-pounds and cover the access holes with snap hole plug P/N CSP80-20 or equivalent. Mark the end of the bolt, nut and adjacent structure with a red line. Visually inspect the red marking at each location for signs of movement at intervals not to exceed 320 hours in service from last inspection until the modification in paragraph 2.b. is accomplished, or b. incorporate DeHavilland modification (Ref. S/B 7-54-4). 3. For bolts that are found to be properly torqued, mark and inspect bolts as above in paragraph 2.a. until the modification is accomplished. 4. Incorporate DeHavilland modification in accordance with S/B No. 7-54-4, ACCOMPLISHMENT INSTRUCTIONS, or equivalent, within 1900 hours in service from the initial inspection in paragraph 1. 5. Equivalent parts and modification must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective January 24, 1980.
2019-25-17: The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER (Model 737 NG) series airplanes (although the scope of the AD requirements is limited to operation at specific runways in the U.S., Colombia, and Guyana). This AD requires revising the airplane flight manual (AFM) to prohibit selection of certain runways for airplanes equipped with certain software. This AD was prompted by reports of display electronic unit (DEU) software errors on airplanes with a selected instrument approach to a specific runway. The FAA is issuing this AD to address the unsafe condition on these products.
80-08-13: 80-08-13 DeHAVILLAND: Amendment 39-3747. Applies to DHC-7 model airplanes, Serial Numbers 1 thru 18, certificated in all categories. To prevent possible failure of the main landing gear due to cracking in the upper drag strut, accomplish the following: 1. Prior to next flight, and daily thereafter, visually inspect the lower lug end of the upper drag strut sub=assembly on the main landing gear for cracks, in accordance with ACCOMPLISHMENT INSTRUCTIONS in DeHavilland Alert Service Bulletin A7-32-18, paragraphs 1. and 2., dated February 6, 1980, or equivalent. 2. At intervals of 40 hours in service or 50 landings, whichever occurs first, after the effective date of this AD, with gear partially retracted, inspect lugs for cracks in accordance with paragraph 3. of the above DeHavilland service bulletin ACCOMPLISHMENT INSTRUCTIONS or equivalent. 3. If cracks are found, the upper drag strut assembly must be replaced before further flight by parts with the same part numbers or equivalent, inspected and found serviceable in accordance with the above DeHavilland service bulletin or equivalent. 4. Within 200 hours in service or 250 landings, whichever occurs first, after the effective date of this AD, inspect the upper drag strut lower lug ends by Eddy Current methods in accordance with paragraph 4. of the ACCOMPLISHMENT INSTRUCTIONS in the above DeHavilland service bulletin or equivalent. 5. When inspection in paragraph 4. is accomplished the inspections in paragraphs 1. and 2. are no longer required. 6. Report positive findings, including crack length, from any inspection, to the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, within 10 days of inspection. (Reporting approved by Office of Management and Budget under OMB No. 04-R0174.) 7. Equivalent parts and inspections must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. 8. Compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through an FAA Maintenance Inspector. This amendment is effective April 16, 1980.
2019-23-06: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200CB, and -300 series airplanes. This AD was prompted by reports of cracks initiating in the fuselage frame web at body station (STA) 1640. This AD requires, depending on configuration, a general visual inspection for any previous repair, such as any reinforcing repair or local frame replacement repair, repetitive open hole high frequency eddy current (HFEC) inspections for any crack of the fuselage frame web fastener holes, on the left and right side of the airplane, and applicable on- condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
79-02-04: 79-02-04 COSTRUZIONI AERONAUTICHE GIOVANNI AGUSTA: Amendment 39- 3396. Applies to Model A109 and A109A helicopters, serial numbers 7109 and below, certificated in all categories, incorporating tail rotor drive shaft hanger bearing support bracket, P/N 109-0370-02-1. Compliance is required as indicated, unless already accomplished. To prevent a possible tail rotor failure, accomplish the following: (a) Within the next 10 hours time in service after the effective date of this AD, and thereafter following the last flight of each day in which the helicopter is operated, inspect the tail rotor drive shaft hanger bearing support bracket, P/N 109-0370-02-1, for cracks in accordance with Part I of the "Accomplishment" paragraph of Agusta Bollettino Tecnico No. 109-2, dated April 14, 1976, including Rev. A dated May 11, 1976, or an FAA-approved equivalent (hereinafter referred to as Service Bulletin). (b) If a crack is found during an inspection required by this AD, before further flight, except as provided in paragraph (d) of this AD, replace the affected bracket with - (1) A serviceable bracket of the same part number, and continue to inspect in accordance with paragraph (a) of this AD after the last flight of each day in which the helicopter is operated; or, (2) A new support bracket, P/N 109-0370-12-1, in accordance with Part II of the "Accomplishment" paragraph of the Service Bulletin. (c) Within the next 100 hours time in service after the effective date of this AD, replace the support bracket, P/N 109-0370-02-1 with a new bracket, P/N 109-0370-12-1, in accordance with Part II of the "Accomplishment" paragraph of the Service Bulletin. The repetitive inspections required by paragraphs (a) and (b)(1) of this AD may be discontinued upon installation of a support bracket, P/N 109-0370-12-1, in accordance with this AD. (d) Helicopters may be flown in accordance with FAR's 21.197 and 21.199 to a base where the required work canbe performed. This amendment becomes effective February 19, 1979.
80-03-04: 80-03-04 MCDONNELL DOUGLAS: Amendment 39-3684. Applies to McDonnell Douglas Model DC-9, Series 10, 20, 30, 40, and 50 airplanes and Military C-9 series airplanes certificated in all categories, not incorporating McDonnell Douglas Service Bulletin 49-25 dated November 10, 1973 or the production equivalent of this service bulletin. \n\n\tTo prevent fire hazard caused by possible accumulation of fuel from APU false-starts collecting on lower aft fuselage inner surface, accomplish the following: \n\n\t(a)\tWithin the next 100 hours' time in service from the effective date of this AD unless already accomplished within the last 150 hours' time in service, and thereafter intervals not to exceed 250 hours' time in service from the last inspection, accomplish the following: \n\n\t\t(1)\tVerify that the area adjacent to and above the fuselage drain hole located after the pressure bulkhead at the 5 o'clock position is clear of debris and an open drain path is evident. Clean if necessary to removedebris; insure that the lower edge of the aft pressure bulkhead insulation blanket does not obstruct the drainhole, and \n\n\t\t(2)\tCheck tail compartment for any spilled fuel and clean before starting APU. \n\n\t(b)\tWithin 100 hours' time in service from the effective date of this AD: \n\n\t\t(1)\tRecord in the aircraft logbook all occurrences of APU false starts. \n\n\t\t(2)\tPrior to restart attempt after false start occurrence, check for open drain hole at 5 o'clock position and check for any fuel spills in the aft compartment and clean before restart attempt. \n\n\t\t(3)\tInstall placard in cockpit and revise AFM to read, "Do not attempt to restart APU after a false start until check of drain and AFT fuselage has been accomplished." \n\n\tThe checks required by paragraph (b)(2) of this AD may be performed by the flight crew. \n\n\tNOTE: A maintenance record entry showing compliance and method of compliance with this AD is required by FAR 91.173 and FAR 121.380. \n\n\t(c)\tWithin one year's timein service from the effective date of this AD, unless already accomplished, incorporate the APU exhaust system modification consisting of a baffle on the exhaust duct assembly which diverts residual fuel away from the expansion joint, per McDonnell Douglas Service Bulletin 49-25, dated November 10, 1973. \n\n\t(d)\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, modifications or repairs required by this AD. \n\n\t(e)\tAlternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region. \n\n\tThis amendment becomes effective February 11, 1980.
60-09-02: 60-09-02 FORNEY: Amdt. 137 Part 507 Federal Register April 30, 1960. Applies to Models Erco 415 Series and Aircoupe F-1 Aircraft Serial Numbers 1 Through 5678 Incorporating Electrol Hose Gear With Aluminum Scissors. Compliance required not later than July 1, 1960. Bolts used to attach the forged aluminum scissors to the electrol nose gear were found to be brittle. To preclude failure of these bolts and the danger of the nose wheel turning crosswise during landing, the following shall be accomplished: Replace bolts, P/N 415-34330, with AN 5-26 bolts, AN 960 washers (two per bolt) and AN 310-5 nuts. The tightened nut must not cause binding. (Forney Service Bulletin No. 103 covers this same subject.)
2019-23-10: The FAA is superseding Airworthiness Directive (AD) 2019-21-08 for Textron Aviation Inc. (Textron) Models E33, E33A, E33C, F33, G33, 35-C33, 35-C33A, K35, M35, N35, P35, S35, V35, V35A, 36, and certain Models F33A, F33C, V35B, and A36 airplanes. AD 2019-21-08 required inspecting the right aileron flight control cable end fittings (terminal attachment fittings) and replacing any damaged cable assembly. This AD retains all of the actions of AD 2019-21-08 but removes Models K35, M35, N35, and P35 from the applicability. This AD was prompted by a comment the FAA received that AD 2019-21-08 should not apply to Models K35, M35, N35, and P35 airplanes. The FAA is issuing this AD to address the unsafe condition on these products.
81-06-53 R1: 81-06-53 R1 SIKORSKY AIRCRAFT DIVISION: Amendment 39-4124 as amended by Amendment 39-4303. Applies to S-62 series helicopters, certificated in all categories, equipped with P/N S6235-20213 (Goodyear 9430301) or P/N S62350-22013-101 (Goodyear 4000277) rotor brakes discs. Compliance required as indicated, unless previously accomplished. A. To prevent operation with cracked rotor brake discs, accomplish the following: (1) Prior to the next flight and prior to the first flight of each day thereafter, visually inspect the P/N S6235-20213 (Goodyear 9430301) rotor brake disc for cracks in accordance with Paragraph E(1) of Sikorsky Alert Service Bulletin 62B35-12. (2) Within the next 10 flight hours, and every 120 flight hours thereafter, do a detailed inspection of the P/N S6235-20213 (Goodyear 9430301) rotor brake disc installation and a dye penetrant inspection of the P/N S6235-20213 (Goodyear 9430301) rotor brake disc for possible cracks, in accordance with Paragraph E(2) of Sikorsky Alert Service Bulletin 62B35-12. (3) Not later than July 31, 1982, replace P/N S6235-20213 (Goodyear 9430301) rotor brake disc with P/N 62350-22013-101 (Goodyear 4000277) rotor brake disc in accordance with Paragraph 2 of Sikorsky Service Bulletin 62B35-13. (4) Upon completion of the requirements of Paragraph A(3), the inspections required by Paragraph A(1) may be discontinued. (5) Prior to the accumulation of 120 flight hours since new or the last inspection, or within the next 10 flight hours, whichever occurs later, do a detailed inspection of the P/N 62350-22013-101 (Goodyear 4000277) rotor brake disc installation and a dye penetrant inspection of the rotor brake disc for possible cracks, in accordance with Paragraph E(2) of Sikorsky Alert Service Bulletin 62B35-12, except that the minimum thickness for the new disc is .449 inches and the attachment bolt torque is changed per Figures 1 and 2 of Sikorsky Service Bulletin 62B35-13. Thereafter,inspect at intervals not to exceed 120 flight hours. (6) If crack indications exist, replace the disc in accordance with the applicable Sikorsky S-62 Maintenance Manual, and resume inspections as required in Paragraph A(5) above. B. To prevent grounding of helicopters due to nonavailability of serviceable rotor brake discs, the rotor brake system may be temporarily deactivated as follows: (1) Remove rotor brake cylinder (with bracket) and disc from main gearbox per applicable Sikorsky S-62 Maintenance Manual. Cap and clamp lines. (2) Placard cockpit to indicate that rotor brake system is not operational. (3) Rotor brake systems may be reactivated, as soon as serviceable discs are available, by reinstalling cylinder, bracket, and disc in accordance with the applicable Sikorsky S- 62 Maintenance Manual. Remove placard from cockpit, and resume inspections as required by Paragraph A(1), A(2) and A(S), above, as applicable. C. Report within 24 hours anydiscrepancies found to the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803. D. Upon request of the operator, an equivalent means of compliance with the requirements of this AD may be approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region. Reporting approved by the Office of Management and Budget under OMB No. 04-R0174. NOTE: Sikorsky Alert Service Bulletin No. 62B35-12, dated March 12, 1981, applies to this AD. The manufacturer's Alert Service Bulletin and Maintenance Manual identified and described in this directive are incorporated herein and made a part thereof 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 Manager, Technical Services, Commercial Customer Service, Sikorsky Aircraft Division, North Main Street, Stratford, Connecticut 06602. These documents may also be examined at Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, and FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. Amendment 39-4124 became effective upon publication in the Federal Register except for recipients of the Emergency AD, dated March 16, 1981, for whom it became effective upon receipt. This amendment 39-4303 becomes effective February 18, 1982.
80-07-09: 80-07-09 LEARJET: Amendment 39-3724. Applies to the following models or series and serial number airplanes certificated in all categories: NOTE: A "series" includes all models in a number series, i.e., 25 series includes Models 25, 25A, 25B, 25C, etc. MODEL OR SERIES SERIAL NUMBERS 23 (Model) 23-003 through 23-099 24 (Series) 24-100 through 24-357 25 (Series) 25-003 through 25-291 28 (Model) 28-001 through 28-005 29 (Model) 29-001 and 29-002 35 (Series) 35-001 through 35-274 and 35-278 36 (Series) 36-001 through 36-044 COMPLIANCE: Required as indicated unless already accomplished. To assure that the cabin main entrance upper door will open, in the event of an emergency, accomplish the following: A) Within the next 150 hours time-in-service after the effective date of this Airworthiness Directive (AD), modify the cabin main entrance upper door by, (1) Drilling access holes, installing new mechanism pivot bolts drilled for safety wire and drilling safety wire holes in surrounding structure, as applicable, and (2) safety wiring the bolts, all in accordance with instructions in Gates Learjet Corporation Airplane Modification Kit Number AMK79-9. B) Issuance of a special flight permit in accordance with FAR 21.197 is permitted for the purpose of moving affected airplanes to a location where the modification required by this AD can be accomplished. C) Any equivalent means of compliance with this AD must be approved by the Chief, Wichita Engineering and Manufacturing District Office, Federal Aviation Administration, Room 238, Terminal Building No. 2299, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 942-4219. This amendment becomes effective May 1, 1980.