Results
2025-07-07: The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model A109C, A109E, A109S, and AW109SP helicopters. This AD was prompted by a report of a quality escape on a batch of main rotor blades (MRBs). This AD requires repetitively tap inspecting certain MRBs and replacing those MRBs. This AD also prohibits installing those MRBs, 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.
2025-08-02: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model H160-B helicopters. This AD was prompted by reports of difficulty moving the locking fingers when applying the jettisoning function of the windows. This AD requires repetitively lubricating the locking fingers of each jettisonable window, performing an operational test, and depending on the results, performing corrective actions. These actions are 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.
71-05-06: 71-05-06 AEROSTAR: Amdt. 39-1164. Applies to Models 600 and 601. Serial numbers 60-0001 through 60-0056 and 61-0001 through 61-0070. Compliance required within the next 100 hours time in service after the effective date of this AD or at the next annual inspection, unless already accomplished. To prevent collapse of the main landing gear, replace the main landing gear sidebrace assemblies in accordance with Instructions I, II, III and IV of Aerostar Service Bulletin No. 600- 21, dated December 29, 1970, or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southwest Region, Fort Worth, Texas. This amendment becomes effective April 5, 1971.
2013-03-03: We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension- torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life of certain T-T straps, marking each T-T strap with the expiration date, creating a component record card for each T-T strap, and revising the airworthiness limitations section of the maintenance manual to reflect the changes to the retirement life. This AD was prompted by a report from the T-T strap manufacturer that, over a period of time, moisture may reduce the strength of a T-T strap. The actions are intended to prevent failure of a T-T strap, loss of directional control and subsequent loss of control of the helicopter.
2025-08-03: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS332L2 helicopters. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICAs) and the existing approved maintenance or inspection program, as applicable, 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.
47-10-13: 47-10-13 LOCKHEED: (Was Mandatory Note 15 AD-763-3.) Applies to All Model 49 Serials Up to and Including 2075. Compliance required prior to July 1, 1947. (a) On all firewalls, replace aluminum alloy bulkhead fittings for fuel, oil, and hydraulic lines with nickel steel fittings or others of equivalent fire resistance. (LAC Service Bulletin 49/SB-108 covers this same subject.) (b) In nacelle zones 1 and 2 replace all buting having cut-length hose connections with flexible coupled hose assemblies. (LAC Service Bulletin 49/SB-103 covers this same subject.)
65-14-02: 65-14-02\tBOEING: Amdt. 39-79 Part 39 Federal Register June 12, 1965. Applies to Models 707 and 720 Series Aircraft. \n\n\tCompliance required as indicated. \n\n\tSince the existing bolts attaching each nacelle strut to the wing may be either cadmium plated, electro-nickel-plated, or devoid of plating, and are not adequately protected against corrosion, bolt failures from stress corrosion have occurred. To correct this condition, accomplish the following: \n\n\t(a)\tFor bolts with 10,500 or more hours' time in service on the effective date of this AD, accomplish (c) within 1,500 hours' time in service on the effective date of this AD. \n\n\t(b)\tFor bolts with less than 10,500 hours' time in service on the effective date of this AD, accomplish (c) prior to the accumulation of 12,000 hours' time in service. \n\n\t(c)\tUnless already accomplished, remove the nacelle attachment bolts and install new attachment bolts, Boeing P/N's 65-23413-1 through 65-23413-22, as applicable, or bolts reworked in accordance with Boeing Drawing No. 65-23413, or equivalent approved by the Chief Aircraft Engineering Division, FAA Western Region, on inboard and outboard engine nacelles in accordance with Figure 1 of Boeing Service Bulletins Nos. 1416 and 1416A. \n\n\t(d)\tMaintain a record of hours' time in service for the bolts in order to comply with this AD. If past records of bolt time in service are unavailable, bolt time in service prior to the effective date of this AD shall be considered equal to aircraft time in service.\n \n\t(Boeing Service Bulletins Nos. 1416 and 1416A cover this same subject.) \n\n\tThis directive effective July 12, 1965.
2013-01-04: We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (Bell), Model 412 and 412EP helicopters. This AD requires creating a component history card or equivalent record and begin counting and recording the number of accumulated landings for each high aft crosstube assembly (crosstube). Also, this AD requires installing ``caution'' decals regarding towing of a helicopter at or above 8,900 pounds. This AD also requires confirming the crosstube is within the horizontal deflection limits and replacing it if it is not. This AD also requires a recurring fluorescent penetrant inspection (FPI) of each crosstube and upper center support for a crack, any corrosion, nick, scratch, dent, or any other damage. This AD requires repairing damaged crosstubes and upper center supports that are within acceptable limits, reworking crosstubes by bonding on abrasion strips, and replacing each unairworthy crosstube with an airworthy crosstube. This AD was prompted by analysis of the crosstubes conducted as a result of recent field failures and corrosion problems of the affected crosstubes. The actions are intended to prevent failure of a crosstube, collapse of the landing gear, and subsequent loss of control of the helicopter.
2025-08-04: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS332L helicopters. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICAs) and the existing approved maintenance or inspection program, as applicable, 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.
72-23-01: 72-23-01 HANDLEY PAGE (JETSTREAM AIRCRAFT LTD): Amendment 39-1548 as amended by Amendment 39-1585 and 39-1605 is further amended by Amendment 39-2197. Applies to Handley Page HP-137 Mark I airplanes. Compliance is required on or before March 24, 1973, unless already accomplished, except that the airplane may be flown in accordance with FAR Section 21.197 and 21.199 to a base where the alteration can be performed. To prevent fires, which could result from engine rotor failures and combustion chamber burn through torching flames, in the areas of the nacelle forward of the existing vertical firewall from entering the area aft of the vertical firewall and damaging wing structure or burning into the wing fuel tank in this area, install additional fire shielding to the lower nacelle area down from and aft of the existing vertical firewall in accordance with the following: (a) Using fireproof materials which comply with FAR 23.1191, extend the existing vertical firewall andprovide fireproof shielding for the area aft of the extended vertical firewall in accordance with Jetstream Aircraft Limited Modification No. 5001, Part 1, Issue 1, dated September, 1971, and Part 2, Issue 2, dated December, 1971, or other equivalent modification approved by the Chief, Engineering and Manufacturing Branch of an FAA Region (or, in the case of the Western Region, the Aircraft Engineering Division). NOTE: Copies of Jetstream Aircraft Limited Modification No. 5001 may be obtained from the FAA, Engineering and Manufacturing Branch in the FAA Regions (or in the case of the Western Region, the Aircraft Engineering Division). Amendment 39-1548 became effective October 31, 1972. Amendment 39-1585 was effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated December 2, 1972, which contained this amendment. Amendment 39-1605 was effective upon publication in theFederal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated January 23, 1973, which contained this amendment. This amendment 39-2197 becomes effective May 5, 1975.