Results
2007-26-16: We are adopting a new airworthiness directive (AD) for certain Cessna Model 680 airplanes. This AD requires inspecting the routing of the aft fairing wire bundle assembly for adequate separation between the wiring and the hydraulic line; inspecting for chafing or damage of the wire bundle assembly and for damage to the hydraulic line, and doing corrective actions if necessary. This AD results from an incident report which indicated that a hydraulic leak and wire chafing, including signs of heat damage, were found within the lower tail cone fairing area. Similar wire chafing has also been found on other airplanes. We are issuing this AD to detect and correct wire chafing, and inadequate separation of the wiring and hydraulic line, which could lead to electrical arcing and a hydraulic leak and could result in a potential source of ignition and consequent fire.
2020-03-24: The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate \n\n((Page 11290)) \n\nnew or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
2001-12-09: This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 900 and Falcon 900EX series airplanes, that requires replacement of the protective screens of the underfloor structure boxes at frame 25. This amendment is necessary to prevent water from collecting and freezing in the structure boxes at frame 25, which could result in jamming of the flight controls and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
96-24-17 R1: This document clarifies information in airworthiness directive (AD) 96-24-17, which applies to Don Luscombe Aviation History Foundation (Luscombe) Models 8, 8A, 8B, 8C, 8D, 8E, 8F, T-8F airplanes. AD 96-24-17 currently requires installing new inspection holes, modifying the wing tip fairings, and inspecting the wing spars for intergranular corrosion. The actions specified in AD 96-24-17 are intended to prevent wing spar failure from intergranular corrosion, which could result in structural failure of the wings and loss of control of the airplane. The AD was published with an Appendix providing an alternative method of compliance. Since issuance of AD 96-24-17, the FAA has re-examined the Appendix and has determined that clarification of certain inspections procedures is needed. This action clarifies the procedures specified in the Appendix of AD 96-24-17.
94-14-02: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires tests of the thrust reverser system, and repair, if necessary; installation of a modification that would terminate those tests; and repetitive operational checks of that installation, and repair, if necessary. This amendment is prompted by results of a safety review, which revealed that in-flight deployment of a thrust reverser could result in a significant reduction in the controllability of the airplane. The actions specified by this AD are intended to prevent deployment of a thrust reverser in flight and subsequent reduced controllability of the airplane.
2007-26-20: The FAA is adopting a new airworthiness directive (AD) for PW PW4164, PW4168, and PW4168A turbofan engines with certain low pressure turbine (LPT) stage 4 disks, part number (P/N) 51N404, installed. This AD requires removing certain LPT stage 4 disks, listed by serial number at the next piece-part exposure or within 7,500 cycles-since-new (CSN). This AD results from a report of improperly manufactured LPT stage 4 disks. We are issuing this AD to prevent an uncontained engine failure due to low-cycle fatigue (LCF), which could result in damage to the airplane.
2001-12-13: This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and EMB-145 series airplanes, that requires replacement of certain brake control units (BCU) with new units. The actions specified by this AD are intended to prevent uncommanded application of 50 percent braking in one pair of wheels, which could result in the airplane skidding off the runway. This action is intended to address the identified unsafe condition.
2020-03-18: The FAA is superseding Airworthiness Directive (AD) 2017-19-08 and AD 2018-19-02, which applied to Airbus Defense and Space S.A. Model C-212-CB, C-212-CC, C-212-CD, C-212-CE, and C-212-DF airplanes. AD 2018-19-02 required repetitive inspections of the rudder pedal control system support box and shaft and applicable corrective actions; accomplishing those actions terminated the requirements of AD 2017-19- 08. This AD continues to require repetitive inspections and applicable corrective actions; and also requires a modification of the rudder pedal adjustment system; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD was prompted by a determination that a modification must be done in order to address the unsafe condition. The FAA is issuing this AD to address the unsafe condition on these products.
94-13-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that requires inspections to detect cracking in certain fuselage upper deck tension ties, and repair or modification of any cracked tension ties. This amendment is prompted by reports of fatigue cracking in tension ties. The actions specified by this AD are intended to prevent failure of two or more tension ties and the resultant rapid decompression of the airplane.
94-13-11: This amendment adopts a new airworthiness directive (AD) that applies to certain Piper Aircraft Corporation (Piper) Models PA34-200, PA34-200T, PA34-220T, PA44-180, and PA44-180T airplanes. This action requires repetitively inspecting the main landing gear trunnions for cracks, replacing any trunnions found cracked, and eventually replacing these trunnions with improved parts as terminating action for the repetitive inspection requirement. Several reports of the main landing gear trunnions cracking on the affected airplanes prompted this action. The actions specified by this AD are intended to prevent collapse of the main landing gear caused by cracked trunnions, which could result in airplane damage.