Results
97-06-13R1: This amendment rescinds airworthiness directive (AD) 97-06-13 for Rolls-Royce plc (RR) models RB211 Trent 892, 884, 877, 875, and 892B series turbofan engines. That AD requires inspecting and replacing certain angle gearbox and intermediate gearbox hardware, and on-going repetitive inspections of the magnetic chip detectors. That AD resulted from reports of loss of oil from the angle drive upper shroud tube, the intermediate gearbox housing, the external gearbox lower bevel box housing, and by reports of bearing failures. We intended the requirements of that AD to prevent loss of oil, which could cause an engine fire, and to prevent in-flight engine shutdowns and airplane diversions caused by oil loss and from bearing failures. Since we issued that AD, we determined that the inspections and replacements required by that AD are no longer required to correct an unsafe condition.
96-17-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A310 series airplanes, that requires repetitive inspections to detect discrepancies of the slat universal joint and steady bearing assemblies, and replacement of any discrepant assembly with a new, like assembly. This amendment also requires replacement of all slat universal joint and steady bearing assemblies with improved assemblies, which would terminate the repetitive inspections. This amendment is prompted by reports of broken or missing inner races on the slat universal joint and steady bearing assemblies of the slat transmission system. The actions specified by this AD are intended to prevent cracking of the inner race, which could cause it to break off and, consequently, allow the slat universal joint and steady bearing assemblies to become worn; this situation could result in failure of the shaft of the slat transmission system, and subsequent uncommanded movement of the associated slat.
2018-18-18: We are adopting a new airworthiness directive (AD) for all Airbus SAS Model A300 series airplanes. This AD was prompted by a revision of an airworthiness limitation items (ALI) document. This AD requires revising the maintenance or inspection program, as applicable, to incorporate the specified maintenance requirements and airworthiness limitations. We are issuing this AD to address the unsafe condition on these products.
2006-20-01: The FAA is adopting a new airworthiness directive (AD) for all Airbus Model A310 airplanes. This AD requires revising the Limitations section of the airplane flight manual by incorporating restrictions for high altitude operations. This AD results from several incidents of pitch oscillations with high vertical loads that occurred during turbulence at high altitudes. We are issuing this AD to prevent pitch oscillations during turbulence, which could result in reduced controllability of the airplane.
2006-19-12: The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 777-200 and -300 series airplanes. This AD requires inspecting the lower web of the aft fairing of engine struts for any discoloration and doing any related investigative and corrective action if necessary; inspecting the heat shield castings for any damage and doing any corrective action if necessary; installing gap cover strips; and replacing insulation blankets with new insulation blankets. This AD results from a report that several discolored fairing lower webs and some damaged/deteriorated insulation blankets were found in the aft fairings of engine struts. We are issuing this AD to prevent cracking of lower webs of the aft fairings, which could result in flammable hydraulic fluid leaking onto or near an ignition source, and possibly result in an uncontrollable fire in the engine strut area.
2021-09-01: The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A320-271N, A321-211, and A321-271N airplanes. This AD was prompted by reports of missing overhead stowage compartment (OHSC) X-fixation brackets or brackets that were incorrectly installed during assembly. This AD requires a special detailed inspection of the OHSC X-fixation brackets for missing or incorrectly installed brackets, and installation or replacement the OHSC X-fixation brackets if necessary; or modification of each OHSC; as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2018-19-04: We are adopting a new airworthiness directive (AD) for certain Learjet, Inc. Models 28, 29, 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and 60 airplanes. This AD was prompted by fatigue cracks initiating in the flap support structure due to repetitive flap loads, which has caused flap nose roller support bracket failure. This AD requires replacement of the flap nose roller fitting, nose roller support bracket, and adjacent rib support structure with improved components. We are issuing this AD to address the unsafe condition on these products.
55-02-02: 55-02-02 LYCOMING: Applies to Model O-320 Engines Below Serial Number 612 Installed in Aircraft Equipped With Fixed Pitch Propellers. Compliance required as soon as possible but not later than February 28, 1955. Several immediate forced landings have occurred with aircraft equipped with the above engine and propeller combinations due to rapid loss of engine oil from the engine accessory drive adapter gasket location. To preclude this possibility, all such engines should be inspected to insure that the proper gasket is installed under the lower accessory drive adapter cover. For engines with fixed pitch propellers, Lycoming P/N 69551, gasket must be installed at this location. (Lycoming Service Bulletin No. 176 covers this same subject.)
2006-19-11: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an airworthiness authority of another country to identify and correct an unsafe condition on an aviation product. We are issuing this AD to require actions to correct the unsafe condition on these products.
67-22-08: 67-22-08 ROLLS-ROYCE: Amdt. No. 39-451, Part 39, Federal Register July 26, 1967. Applies to Spey Model 506-14 Engines. Compliance required as indicated, unless already accomplished. To prevent failure of the C.A.S.C. 105 and 125 Lucas fuel flow controls installed on Spey Model 506-14 engines due to wear of the splines on the input drive assembly, accomplish the following: (a) For fuel flow controls with 700 or more hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (b) For fuel flow controls with less than 700 hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) before the accumulation of 800 hours' total time in service, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (c) For fuel flow controls that have been overhauled and that on the effective date of this AD, have 700 or more hours' time in service since overhaul, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (d) For fuel flow controls that have been overhauled and that on the effective date of this AD have less than 700 hours' time in service since overhaul, comply with paragraph (e) before the accumulation of 800 hours' time in service since overhaul, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (e) Inspect the input drive assembly, in accordance with Rolls-Royce Service Bulletin Number SP 73- A109 dated February 2, 1967, or later ARB-approved issue, or FAA-approved equivalent. If wear is found, incorporate Rolls-Royce Modification 3258, or an FAA-approved equivalent, before further flight. (f) The repetitive inspection required by paragraphs (a) through (d) may be discontinued upon incorporation of Modification 3258, or an FAA-approved equivalent. This amendment effective August 25, 1967.