Results
2021-22-05: The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model A119 and AW119 MKII helicopters. This AD was prompted by reports of abnormal play on the collective torque tube on two Model AW119 MKII helicopters. This AD requires repetitive inspections of affected torque tube assemblies for any deficiency and corrective action if necessary; and the replacement of any affected part with a serviceable part, which is terminating action for the repetitive inspections, 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.
2004-06-12: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400F series airplanes, that requires repetitive detailed and general visual inspections of the external fuselage skin for cracks; various inspections of the affected area where cracks are found to determine the extent of the damage; and repair of cracks. This action is necessary to detect and correct fatigue cracks in the fuselage skin and frame shear tie assemblies, which could propagate and result in possible in-flight decompression of the airplane. This action is intended to address the identified unsafe condition.
2004-06-14: This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires measuring the torque of the adjustable pin in the rear attachment of the intermediate strut for both engines, and retorquing the adjustable pins to the correct torque value. This action is necessary to prevent long-term damage to the engine mounting structure (EMS), and loss of redundancy on the EMS, which could result in possible separation of an engine from the airplane, reduced controllability of the airplane, and injury to persons or property on the ground. This action is intended to address the identified unsafe condition.
2004-06-15: This amendment adopts a new airworthiness directive (AD), applicable to certain BAE Systems (Operations) Limited Model Avro 146- RJ and Model BAe 146 series airplanes, that requires a test to determine the torque setting for the collar cap screw of the differential box for the nose landing gear, and follow-on actions. This action is necessary to prevent uncommanded inputs to the nosewheel steering, which could result in reduced controllability of the airplane during takeoff and landing. This action is intended to address the identified unsafe condition.
57-12-03: 57-12-03 BELL: Applies to Model 47J Helicopters Serial Numbers 1420 Through 1426, 1429 Through 1433, 1435 Through 1439, and 1441, 1559, 1562, 1574. Compliance required prior to July 1, 1957. In order to preclude the failure of the engine sprag spindle P/N 47-612-167-1, due to overtorquing of the AN 320-10 nut, the following modification must be accomplished. 1. Remove spindle after first removing the 47-612-166 links from the spindle and 47-612-158 brace assemblies. 2. Install one AN 6-17 bolt with one AN 960-616L washer under the head in the spindle. 3. Reinstall the previously removed links on the spindle. Drill a No. 52 (.062 dia.) hole in one castellation of the AN 320-10 nut for safety wire. Reinstall an AN 960-1016 washer and AN 320-10 nut. After positioning links, torque AN 320-10 nut to 150 inch-pounds. (NOTE: One AN 364-1018 nut may be substituted for the drilled AN 320-10 nut.) 4. Install one AN 960-616L washer and one AN 310-6 nut on end of AN 6-17 bolt. Torque to 160-190 inch-pounds and install one AN 381-3-12 cotter key. 5. Replace spindle. Resafety attach bolts and safety AN 320-10 nut (if used) to the spindle attach bolts. 6. Connect the links, using previously removed hardware. (Bell Mandatory Service Bulletin No. 120 dated March 29, 1957, covers this same subject.)
2004-06-18: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 737-300 and -400 series airplanes, that currently requires either repetitive leak checks on the forward lavatory service system and repair, as necessary, or draining of the system and placarding the lavatory inoperative. This amendment also requires periodic changing of the seals of certain lavatory drain systems; replacing "donut valves" with other FAA-approved valves; revising certain leak test intervals; and revising the pressurization and fluid level requirements for testing. The actions specified by this AD are intended to prevent damage to engines, airframes, and property on the ground that is associated with the problems of "blue ice" that forms from leaking lavatory drain systems on transport category airplanes and subsequently dislodges from the airplane fuselage.
2024-16-09: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD was prompted by a report indicating multiple findings of cracks in the fuselage skin common to the underwing longeron (UWL). This AD requires external or internal (depending on configuration) inspections for any cracking of the left and right side fuselage skin common to the UWL, and applicable on- condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
2004-06-08: This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model DHC-8-401 and -402 airplanes, that requires modifying the wiring of the rudder trim switch, inspecting all wiring on the back of the aileron/rudder trim control panel for chafing, and replacing any chafed wiring with new wiring. This action is necessary to prevent a short circuit on the aileron/ rudder trim control panel that could cause a runaway condition of the rudder trim actuator, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
2016-17-14: We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD was prompted by a report that on some airplanes, during the paint removal process for repainting the airplane, the basic corrosion protection (anodizing and primer) coating was sanded down to bare metal on the aluminum skin panels, and the bare metal might not have been treated correctly for corrosion prevention. This AD requires an inspection of structural components of the airplane for any damaged protective coating; inspections of those areas for pitting corrosion, if necessary; a thickness measurement to determine if there is reduced skin thickness, if necessary; and repair, if necessary. We are issuing this AD to detect and correct damaged protective coatings. This condition could result in pitting corrosion damage; and reduced metal thickness, which could result in reduced static and fatigue strength of the airplane's structural parts.
2024-18-03: The FAA is superseding Airworthiness Directive (AD) 2023-11- 01, which applied to certain Bombardier, Inc., Model BD-100-1A10 airplanes. AD 2023-11-01 required a records check and replacement of affected left-hand (LH) direct current power center (DCPC) units. AD 2023-11-01 also provided optional terminating action for the records check and replacement. This AD was prompted by multiple reports of erratic electrical system status on the push button annunciators (PBAs) and the engine instrument and crew alerting system (EICAS) while on- ground and during flight, and by the determination that certain DCPC units require additional modification or replacement. This AD requires checking maintenance records of certain airplanes, replacing certain DCPC units, and modifying certain DCPC units. This AD also expands the applicability of AD 2023-11-01 and prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.