Results
99-04-17: This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB SF340A and SAAB 340B series airplanes, that requires inspections to detect discrepancies of the support straps of the flaps and adjacent areas, and corrective action, if necessary. This amendment also requires replacement of the support straps with new straps made of steel. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent fatigue cracking of the support straps of the flaps, which could result in further damage to the flap structure, and consequently lead to reduced controllability of the airplane.
2022-01-07: The FAA is superseding Airworthiness Directive (AD) 2021-11- 23, which applied to certain Airbus SAS Model A350-941 and -1041 airplanes. AD 2021-11-23 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, and, for certain airplanes, updating the hydraulic monitoring system to include additional redundancy. Since the FAA issued AD 2021-11-23, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations; as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD also revises the applicability to include different airplanes. The FAA is issuing this AD to address the unsafe condition on these products.
2004-14-15: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Bombardier Model DHC-8-400 airplanes. That AD currently requires revising the Normal and Abnormal sections of the airplane flight manual (AFM) to include procedures that enable the flightcrew to determine if the main landing gear (MLG) is extended before landing, and to take appropriate actions if necessary. This amendment adds an airplane to the applicability, and requires replacing the existing MLG downlock proximity sensors with new, improved sensors. After the replacement, this action also requires removing from the AFM the revision to the Normal and Abnormal sections required by the existing AD. The actions specified by this AD are intended to prevent failure of the MLG downlock proximity sensors on the same MLG at the same time, which could result in the MLG's failure to extend during landing, and cause injury to flightcrew and passengers. This action is intended to address the identified unsafe condition.
96-14-51: This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) T96-14-51 that was sent previously to all known U.S. owners and operators of Boeing Model 767 series airplanes by individual telegrams. This AD requires an inspection of the aileron control cables and the generator feeder cables to detect chafing damage of the cables and to ensure that a minimum clearance exists between them. It also requires the correction of any discrepancies detected and submission of a report of inspection results to the FAA. This amendment is prompted by reports of failure of the aileron control cables due to inadequate clearance between the aileron control cable and the generator power feeder cable, which occurred during manufacture of the airplane. The actions specified by this AD are intended to prevent reduced controllability of the airplane due to failure of the aileron control cable.
46-21-01: 46-21-01 FAIRCHILD: (Was Mandatory Note 6 of AD-702-2: 2 of AD-706-1; 4 of AD- 517-2; 5 of AD-535-2; 4 of AD-564-2; 5 of AD-633-2; 5 of AD-600-2; 4 of AD-667-2.) Applies to Model 24 Series Aircraft. Compliance required at next periodic inspection. To correct the freezing of the upper and lower universal joints on the landing gear oleo shock struts, install new universal joints, Fairchild P/N 3330 and 3328. (Fairchild Service Bulletin 46-24-1-A, revised December 23, 1946, covers this same subject.)
2004-13-24: This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A310 series airplanes, that requires inspecting the pressure-off brakes (POBs) installed on the power control units of the slats and flaps to determine their serial numbers; and replacing any POBs having affected serial numbers with new, serviceable, or modified POBs. This action is necessary to prevent failure of the retaining ring on the POBs, which could result in slat or flap blowback or runaway, with consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
96-14-04: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10 and MD-11 series airplanes, and KC-10A (military) airplanes, that requires identifying and replacing certain lock link bolts in the nose landing gear (NLG). This amendment is prompted by a report indicating that certain bolts were improperly heat-treated during manufacturing, which makes them prone to failure. The actions specified by this AD are intended to prevent failure of the lock link bolts in the NLG, which could result in the collapse of the NLG.
46-36-03: 46-36-03 PIPER: (Was Mandatory Note 2 of AD-780-3.) Applies Only to PA-12 Aircraft Serial Numbers 12-1 to 12-285, Inclusive. Compliance required not later than next periodic inspection. To prevent possible failure of the tailpipe and cracking of the muffler, install the additional brace tube, Piper P/N 10860 and new clamp, P/N 80002-28. The new brace will form, together with the original brace, a "V" instead of a single leg. A careful inspection of the muffler should be made and if any cracks are present, a new muffler should be installed. (Piper Service Bulletin No. 92 dated August 7, 1946, covers this same subject.)
99-04-04: This amendment adopts a new airworthiness directive (AD) that is applicable to Textron Lycoming IO-540 and O-540 engines equipped with Slick Aircraft Products magnetos. This action requires removal of the Slick magneto from the engine and inspection of the impulse coupling pawl for wear. This amendment is prompted by several service difficulty reports, two incidents, and an accident involving severely worn and failed impulse couplings. The actions specified in this AD are intended to prevent failure of the magneto impulse coupling, resulting in seizure of the engine.
2004-14-11: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that currently requires repetitive inspections for discrepancies of the upper and lower areas of the backup struts in the left and right nacelles; and corrective actions, if necessary. This amendment requires repetitive inspections for cracks in the lower areas of the backup struts, and corrective actions if necessary. This action also requires the eventual replacement of the backup struts with new, improved struts, which terminates the repetitive inspections. The actions specified by this AD are intended to prevent failure of the backup struts in the left and right nacelles due to fatigue cracking, which could result in loss of fail-safe redundancy in the design of the nacelle in terms of load capability, and consequent separation of the engine from the airplane and subsequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.