Results
61-23-01: 61-23-01 BRANTLY: Amdt. 364 Part 507 Federal Register November 3, 1961. Applies to All Model B-2 Helicopters Equipped With B2-248-53 or B2-248-53A Outboard Main Rotor Blades. Compliance required as indicated. As the result of bond separation between the skin and foam filler on the inboard end of the B2-248-53 and -53A main rotor blades and cracks around the root fitting in both the upper and lower skins the following inspections are required: (a) Within the next 10 hours' time in service unless already accomplished within the last 15 hours' time in service and at the expiration of each 25 hours' time in service thereafter, inspect the upper and lower skins of the inboard end of the B2-248-53 and -53A blades as follows: (1) Inspect for bond separation by feel or sound tests. If the skin is separated from the foam filler a sponginess will be felt or a dullness in tone will be heard when tapped with a coin. Blades with voids exceeding 12 inches in length shallbe replaced prior to further flight. (2) Inspect for cracks between rivets in the skins with a 5-power or greater magnifying glass. If any cracks are found around two or more rivets the blade must be replaced prior to further flight. (b) When blades are replaced they must be replaced with either B2-248-53M or B2- 248-101 blades. Brantly Service Letter No. 31A must be complied with when B2-248-101 blades are installed. (c) In addition to the inspection interval specified in (a), the inspection required in (a)(1) also must be made prior to each flight after the initial inspection. (d) (1) The inspections required in (a) shall be made by a person as authorized by CAR 18.11. (2) The inspections required in (c) and appropriate log book entries thereon are hereby authorized to be made by the pilot. (Brantly Service Letter No. 28A applies to this same subject.) This directive effective November 4, 1961.
2021-06-04: The FAA is adopting a new airworthiness directive (AD) for all Gulfstream Aerospace Corporation (Gulfstream) Model GV airplanes. This AD was prompted by notification of corrosion present in floor beam support links. This AD requires inspecting the right butt line 6 floor beam inboard support links and bushings for corrosion. The FAA is issuing this AD to address the unsafe condition on these products.
2020-15-17: The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation Model S-76C helicopters. This AD was prompted by reports of inaccurate main gear box (MGB) indications in flight. This AD requires updating the remote data acquisition unit (RDAU) software and re-identifying the RDAU and, for certain helicopters, updating the software of the display unit (DU) and re- identifying the DU. The FAA is issuing this AD to address the unsafe condition on these products.
2007-03-11: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD requires inspecting for discrepancies of the activation mechanism of certain chemical oxygen generators, and corrective action if necessary. This AD results from several incidents, on certain airplane models, of incorrect installation of the release pin into the safety pin hole of the activation mechanism of the chemical oxygen generator; this resulted in failure to activate the chemical oxygen generator when required. A separate incident occurred on a different airplane model during deployment of the cabin oxygen system, which resulted in failure of the release pin to activate the oxygen generator at a flight attendant station. We are issuing this AD to prevent failure of the activation mechanism of the chemical oxygen generator, which could result in the unavailability of supplemental oxygen and possible incapacitation of passengers and cabin crew during an in-flight decompression.
80-16-04: 80-16-04 AIRESEARCH MANUFACTURING COMPANY OF ARIZONA: Amendment 39-3862. Applies to AiResearch TFE-731-2, -3, -3R engines manufactured prior to May 1980. Compliance required as indicated, unless already accomplished. To prevent separation of tie rod and potential massive engine failure, accomplish the following: (a) Within 150 operating hours after the effective date of this AD, unless previously accomplished, compliance is required with Paragraph (c) for the following TFE-731 engines: Model Serial Numbers TFE-731-2-1C 73142, 73159, 73215, 73240, 73293, 73345, 73348 thru 73361 TFE-731-2-2B 74145, 74153, 74159, 74161, 74175, 74201, 74218, 74271, 74284, 74328, 74329, 74331, 74332 thru 74336, 74339, 74341, 74342, 74344, 74348 thru 74351, 74355, 74356, 74358 thru 74362, 74375, 74431, 74448, 74821 TFE-731-3-1E 75138, 75143, 75177, 75179, 75183 thru 75186, 75190, 75191, 75192, 75214 TFE-731-3-1C 76108 TFE-731-3-1G 77166, 77167, 77174, 77176, 77177 TFE-731-3-1F/-1K 78115, 78130, 78131, 78132, 78134, 78137, 78138, 78139, 78145, 78146 TFE-731-3-1H 80107, 80118, 80121, 80176 TFE-731-2-2J 81101, 81102, 81104 (b) For all TFE-731-2, -3, -3R engines manufactured prior to May 1980, and not listed in Paragraph (a), compliance with Paragraph (c) is required at, or prior to, the next major periodic inspection (as defined in AiResearch Service Bulletin TFE-731-72-3105 or -3106), unless previously accomplished. (c) Determine the serial number identification of the tie rod, P/N 3070065-1, installed in engines covered under Paragraphs (a) or (b). This determination can be made by reference to engine build records or by disassembly of the engine sufficient to gain access to the aft end of the tie rod. All tie rods of the following listed serial numbers must be removed from service and replaced with like serviceable parts: 6P11723 6P11747 6P11771 6P11795 6P21154 6P11724 6P11748 6P11772 6P11796 6P21155 6P11725 6P11749 6P11773 6P11797 6P21156 6P11726 6P11750 6P11774 6P11798 6P21157 6P11727 6P11751 6P11775 6P11799 6P21158 6P11728 6P11752 6P11776 6P11800 6P21159 6P11729 6P11753 6P11777 6P11801 6P21160 6P11730 6P11754 6P11778 6P11802 6P21162 6P11731 6P11755 6P11779 6P11803 6P21163 6P11732 6P11756 6P11780 6P11804 6P21164 6P11733 6P11757 6P11781 6P11805 6P21165 6P11734 6P11758 6P11782 6P11806 6P21166 6P11735 6P11759 6P11783 6P11807 6P21167 6P11736 6P11760 6P11784 6P11808 6P21168 6P11737 6P11761 6P11785 6P11809 6P21169 6P11738 6P11762 6P11786 6P11810 6P21170 6P11739 6P11763 6P11787 6P11811 6P21171 6P11740 6P11764 6P11788 6P11812 6P21172 6P11741 6P11765 6P11789 6P11813 6P21173 6P11742 6P11766 6P11790 6P11814 6P21174 6P11743 6P11767 6P11791 6P11815 6P21175 6P11744 6P11768 6P11792 6P11816 7P11849 6P11745 6P11769 6P11793 6P11817 7P11850 6P11746 6P11770 6P11794 6P11818(d) 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 required by this AD. (e) Alternative 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. This amendment becomes effective August 7, 1980.
2021-05-20: The FAA is superseding Airworthiness Directive (AD) 2018-16- 02, which applied to all Airbus SAS Model A318-111 and -112 airplanes; Model A319-111, -112, -113, -114, and -115 airplanes; Model A320-211, - 212, -214, and -216 airplanes; and Model A321-111, -112, -211, -212, and -213 airplanes. AD 2018-16-02 required modifying and re-identifying the 3-lug aft engine mount assemblies. This AD continues to require modifying and re-identifying the 3-lug aft engine mount assemblies, and also requires modifying and re-identifying the 4-lug aft engine mount assemblies; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by a report of a production quality deficiency on the inner retainer installed on link assemblies of the aft engine mount, which could result in failure of the retainer. The FAA is issuing this AD to address the unsafe condition on these products.
2007-03-03: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD requires repetitive inspections to detect cracks in the vertical beam webs of the body station (BS) 178 bulkhead, and corrective actions if necessary. This AD also requires a terminating modification for the repetitive inspections. This AD results from reports of numerous cracks in the vertical beam webs. We are issuing this AD to prevent fatigue cracks in certain vertical beam webs, which could result in loss of structural integrity of the BS 178 bulkhead, and consequently could impair the operation of the control cables for the elevators, speed brakes, and landing gear, or could cause the loss of cabin pressure.
2021-02-09: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by a report that non-destructive tests of the main gearbox (MGB) housing may have been evaluated incorrectly during production. This AD requires replacing affected MGBs with serviceable MGBs, 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.
2007-03-01: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 757 airplanes. This AD requires inspecting certain power feeder wire bundles for damage, inspecting the support clamps for these wire bundles to determine whether the clamps are properly installed, and performing corrective actions if necessary. This AD results from a report that a power feeder wire bundle chafed against the number six auxiliary slat track, causing electrical wires in the bundle to arc, which damaged both the auxiliary slat track and power feeder wires. We are issuing this AD to prevent arcing that could be a possible ignition source for leaked flammable fluids, which could result in a fire. Arcing could also result in a loss of power from the generator connected to the power feeder wire bundle, and consequent loss of systems, which could reduce controllability of the airplane.
2007-02-19: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A300 B4-605R airplanes and Model A310-308, -324, and -325 airplanes. This AD requires modifying the Bruce floor plan electrical emergency path marking system (FPEEPMS) and, for certain airplanes, modifying the automatic switching of the emergency lighting system. This AD results from a report that in the case of vertical separation of the fuselage forward of door 1, the FPEEPMS and the exit signs do not turn on. We are issuing this AD to prevent inadequate lighting and marking of the escape path, which could delay or impede the flightcrew and passengers when exiting the airplane during an emergency landing.