Results
75-22-22: 75-22-22 PRESSED STEEL TANK COMPANY: Amendment 39-2409. Applies to all transport category airplanes incorporating DOT-3HT-3000 compressed gas cylinders manufactured by Pressed Steel Tank Company with original test dates on the cylinder from January 1975 through April 1975 and the following serial numbers: 50793R through 51284R 51913R through 52295R 52413R through 52648R 52663R through 52759R 10316S through 10468S 10516S through 10723S 11316S through 11415S Compliance required within 30 days after the effective date of this Airworthiness Directive, unless already accomplished. To identify and prevent service use of DOT-3HT-3000 cylinders which were manufactured with the wrong composition steel, accomplish the following: (a) Remove affected cylinders from aircraft, or before installing affected cylinders in aircraft, retest hydrostatically in accordance with Title 49 Code of Federal Regulations, Part 178; or (b) Use an equivalent method approved bythe Chief, Engineering and Manufacturing Branch, Great Lakes Region, to determine that the affected cylinder is manufactured with the intended composition steel. The amendment becomes effective November 10, 1975.
2012-08-02: We are adopting a new airworthiness directive (AD) for all Model A330-200 and -300 series airplanes; Model A330-223F and -243F airplanes; and Model A340-200, -300, -500, and -600 series airplanes. This AD was prompted by a report that during the evaluation of engine failures at take-off on Airbus flight simulators, it has been shown that with flight control primary computer (FCPC) 1 inoperative, in worst case scenario when FCPC2 and FCPC3 resets occur during rotation at take off, a transient loss of elevator control associated with a temporary incorrect flight control law reconfiguration could occur. This AD requires revising the Limitations section of the applicable airplane flight manual. We are issuing this AD to prevent movement of the elevators to zero position, which could result in inducing a pitch down movement instead of a pitch up movement needed for lift off, resulting in loss of controllability of the airplane.
71-20-05: 71-20-05 HUGHES: Amdt. 39-1301 as amended by Amendment 39-1359. Applies to Model 269A, 269A-1, and 269B Helicopters. Compliance required as indicated. To prevent failures of idler pulley bearings accomplish the following: (a) Within 50 hours time in service after the effective date of this AD, unless already accomplished, remove from service the aluminum idler pulley shaft, P/N 269A5440 (if installed) and idler pulley bearings, and install steel idler pulley shaft, P/N 269A5438 and idler pulley bearings, P/N 269A5050-58, in accordance with Hughes Service Information Notice N-1.4, dated September 15, 1971, or later FAA approved revision, or an equivalent installation and procedure approved by the Chief, Aircraft Engineering Division, FAA Western Region. Mutilate bearings and aluminum shafts to prevent return to service. (b) After the accomplishment of (a), above, at intervals not to exceed 200 hours time in service thereafter, replace the idler pulley bearingsin accordance with Hughes Service Information N-95, dated September 15, 1971, or later FAA approved revisions, or an equivalent replacement and procedure approved by the Chief, Aircraft Engineering Division, FAA Western Region. Mutilate old bearings to prevent return to service. This supersedes Amendment 39-77, (30 F.R. 7371), AD 65-12-02, as revised on February 2, 1966 (31 F.R. 1267). Amendment 39-1301 became effective October 1, 1971. This amendment 39-1359 becomes effective December 18, 1971.
2012-08-18: We are adopting a new airworthiness directive (AD) for all Turbomeca S.A. Arriel 2B and 2B1 turboshaft engines. This AD was prompted by the discovery of non-conformities of certain power turbine (PT) blade fir-tree roots. This AD requires removing the affected PT blades from service on or before reaching a new reduced life limit for those certain PT blades. We are issuing this AD to prevent PT blade rupture, which could result in an uncommanded in-flight engine shutdown, forced autorotation landing, or accident.
2012-08-03: We are adopting a new airworthiness directive (AD) for certain Airbus Model A300 B4-2C, B4-103, and B4-203 airplanes; Model A300 B4- 600, B4-600R, and F4-600R series airplanes, and Model C4-605R Variant F airplanes (collectively called A300-600 series airplanes); and Model A310 series airplanes. This AD was prompted by reports of cracking in the forward lug wing of the aft bearing at rib 5 of the main landing gear (MLG). This AD requires installing new bushes with increased interference fit in the forward lug wing of the aft bearing at rib 5 of the MLG on the right-hand (RH) and left-hand (LH) wing. We are issuing this AD to prevent cracking of the forward lug wing of the aft bearing at rib 5 of the MLG, which could adversely affect the structural integrity of the MLG attachment, and could result in the collapse of the MLG.
2012-08-08: We are adopting a new airworthiness directive (AD) for all Learjet Inc., Model 45 airplanes. This AD was prompted by changes to the Airworthiness Limitations Section (ALS) of the maintenance manual, which adds life-limits, revises life-limits, or adds inspections not previously identified. This AD requires revising the maintenance program to include new or more restrictive life-limits and inspections. We are issuing this AD to limit exposure of flight critical components to corrosion, cracking, or failure due to life-limits, which if not corrected, could result in loss of roll control, fatigue cracking, or loss of structural components.
2012-08-16: We are adopting a new airworthiness directive (AD) for certain Learjet Inc. Model 60 airplanes. This AD was prompted by two incidents of swapped fire extinguishing wires. This AD requires inspecting the electrical leads routed to the fire extinguishing containers for proper identification and missing labels, and to ensure the electrical leads are connected to the correct squibs; and corrective actions if necessary. We are issuing this AD to prevent the extinguishing agent of the fire extinguishing container from being delivered to the wrong engine in the event of an engine fire, and a consequent uncontrolled fire.
74-14-05: 74-14-05 BEECH: Amendment 39-1892. Applies to those Model B-19 (Serial Numbers MB-481 through MB-634 and MB-649) and those Model C-23 (Serial Numbers M-1285 through M-1493, except M-1437 and M-1491) airplanes which were originally approved in the Acrobatic Category and intentional spins in the Utility and Acrobatic Categories. Compliance: Required as indicated, unless already accomplished. To prevent inflight situations in which prompt spin recovery may not be assured, accomplish the following: A) Effective immediately intentional spins in the Utility and Acrobatic Categories are prohibited. B) Within the next 20 hours' time in service or ten (10) calendar days, whichever comes first, after the effective date of this AD, unless already accomplished per AD 73-14-8, Amendment 39-1683, remove all placards pertaining to intentional spins and acrobatic flight and install in place thereof a placard to be conspicuously located on the instrument panel which reads as follows: "THIS AIRPLANE MUST BE OPERATED AS A NORMAL OR UTILITY CATEGORY AIRPLANE. INTENTIONAL SPINS ARE PROHIBITED. NO ACROBATIC MANEUVERS APPROVED EXCEPT: CHANDELLES, LAZY EIGHTS, STEEP TURNS, AND STALLS (EXCEPT WHIP STALLS)." C) To reinstate the acrobatic category for those airplanes originally approved in the Acrobatic Category and intentional spins in Utility and Acrobatic Categories, install Beech spin improvement Kit No. 23-4007-1 S in accordance with instructions contained therein, or any equivalent method approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Central Region. Upon installation of said Kit, requirements of Paragraphs A) and B) of this AD are no longer applicable. This AD supersedes AD 73-14-8, Amendment 39-1683. This amendment becomes effective July 10, 1974.
65-22-04: 65-22-04 VICKERS: Amdt. 39-141 Part 39 Federal Register September 28, 1965. Applies to Viscount Models 744, 745D and 810 Series Airplanes. Compliance required as indicated. To prevent failure of the main landing gear retraction jack attachment bolt, accomplish the following: (a) For Models 744 and 745D Series airplanes with attachment bolts, P/N's 70150-495, 74450-103, 72450-275, or 74550-51, and Model 810 Series airplanes with attachment bolts, P/N's 74450-103 or 74550-51, comply with (c) within the next 350 hours' time in service after the effective date of this AD, unless already accomplished. (b) For Models 744 and 745D Series airplanes with attachment bolts, P/N's 72450-291 or 74550-67, and Model 810 Series airplanes with attachment bolts, P/N's 74550-67 comply with (c) within the next 1,300 hours' time in service after the effective date of this AD unless already accomplished. (c) Remove and inspect attachment bolts, P/N's 70150-495, 72450-275, 74450-103,74550-51, 72450-291, or 74550-67, in accordance with B.A.C. Ltd. PTL No. 259 (744 and 745D) and PTL No. 123 (810) or FAA-approved equivalent. Replace bolts having helical markings or surface cracks in accordance with PTL No. 259 or No. 123 as applicable. If a bolt is found to be completely broken through, inspect the associated trunnion or eye end for cracks. Replace any cracked trunnions or eye ends before further flight with a part of the same part number or an FAA-approved equivalent. This directive effective September 25, 1965.
2012-08-04: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by reports of the air driven generator (ADG) failing to power essential buses during functional tests, due to the low threshold setting of the circuit protection on the ADG's generator control unit (GCU) preventing the ADG from supplying power to the essential buses. This AD requires installing a new or serviceable ADG GCU. We are issuing this AD to prevent loss of power from the ADG to the essential buses which, in the event of an emergency, could prevent continued safe flight.