Results
2021-04-09: The FAA is adopting a new airworthiness directive (AD) for certain Yabora Industria Aeronautica S.A. Model EMB-135, EMB-145, -145EP, -145ER, -145LR, -145MP, -145MR, and -145XR airplanes. This AD was prompted by reports that calculations provided by the automatic takeoff thrust control system (ATTCS) are incorrect under certain conditions. This AD requires updating the software of the installed full authority digital engine control (FADEC) systems, as specified in an Agencia Nacional de Aviaco Civil (ANAC) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
95-21-04: This amendment supersedes an existing airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 series airplanes, that currently requires modification of the support structure of the cargo liner. That AD was prompted by a report of chafing and arcing in the vacuum waste exhaust heater that caused a spark to ignite the surrounding insulation blankets. The actions specified in that AD are intended to prevent fire and/or smoke due to chafing and arcing of the vacuum waste exhaust port heater. This amendment expands the applicability of the existing rule to include additional affected airplanes. It also provides for an alternative method of modification.
2010-09-05: The FAA is superseding an existing airworthiness directive (AD) that applies to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. The existing AD currently requires doing a detailed inspection of the inboard and outboard aft attach lugs of the left and right elevator control tab mechanisms for gaps between the swage ring and the aft attach lug, and between the spacer and the aft attach lug; trying to move or rotate the spacer using hand pressure; and replacing any discrepant elevator tab control mechanism, including performing the detailed inspection on the replacement part before and after installation. For certain airplanes, this new AD adds improved repetitive inspections for discrepancies of the inboard and outboard aft attach lugs of the left and right elevator control tab mechanisms, and replacement if necessary. For certain other airplanes, this new AD adds a one-time inspection for discrepancies of the inboard and outboard aftattach lugs of the left and right elevator control tab mechanisms, and replacement if necessary. For airplanes on which the elevator control tab mechanism is replaced with a certain mechanism, this AD requires repetitive inspections for discrepancies of the elevator control tab mechanism and replacement if necessary. Replacing the elevator control tab mechanism with a new, Boeing-built mechanism terminates the repetitive inspections. This AD results from a report of failure of the aft attach lugs on the left elevator tab control mechanism, which resulted in severe elevator vibration; this event occurred on an airplane on which the existing AD had been done. We are issuing this AD to detect and correct a loose bearing in the aft lug of the elevator tab control mechanism, which could result in unwanted elevator and tab vibration. Consequent structural failure of the elevator or horizontal stabilizer could result in loss of structural integrity and aircraft control.
95-11-12: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9, DC-9-80, and C-9 (military) series airplanes, and Model MD-88 airplanes, that requires repetitive replacement of the emergency power switch in the overhead switch panel with a new switch. This amendment is prompted by a report of heavy smoke in the cockpit coming from the overhead switch panel on a Model DC-9-81 series airplane. The actions specified by this AD are intended to ensure replacement of the emergency power switch when it has reached its maximum life limit; an emergency power switch that is not replaced could fail and lead to a short in the electrical circuit, which could result in a fire in the overhead switch panel and smoke in the cockpit.
2021-02-18: The FAA is adopting a new airworthiness directive (AD) for all Airbus Defense and Space S.A. Model CN-235, CN-235-100, CN-235-200, and CN-235-300 airplanes and Model C-295 airplanes. This AD was prompted by cracks found on certain left- and right-hand stringers in a certain area of the fuselage. This AD requires repetitive inspections for cracking or broken rivets of certain left- and right-hand stringers and surrounding structure, and repair if necessary, 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.
73-19-08: 73-19-08 BELL: Amdt. 39-1714. Applies to Bell Model 206A, 206B, 206A-1 and 206B- 1 helicopters certificated in all categories. Compliance required as indicated. To prevent possible fatigue cracks in the main rotor retention strap fittings P/N 206-010- 155-11 and -15, and the main rotor retention strap pin, P/N 206-010-123-3, accomplish the following: a. Remove and replace retention strap fittings, P/N 206-010-155-11 and -15 and pins, P/N 206-010-123-3, with 1100 or more hours total time in service on the effective date of this AD within the next 100 hours time in service. b. Remove and replace fittings, P/N 206-010-155-11 and -15 and pins, P/N 206- 010-123-3 with less than 1100 hours total time in service on the effective date of this AD, prior to accumulating 1200 hours total time in service. c. Install replacement fittings and pins in accordance with the appropriate model maintenance and overhaul information manuals and provide corrosion protection as specified in Bell Helicopter Company, Technical Bulletin No. 206-(04-1)-73-1, dated March 9, 1973 or later FAA approved revision or as specified in an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, Federal Aviation Administration. This amendment becomes effective September 15, 1973.
2010-08-04: We are superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Cracks have been found in the NLG steering jack piston rod adjacent to the eye-end. This was caused by excessive torque which had been applied to the eye-end during assembly of the unit. Severe cracking, if not detected and corrected, can cause the jack to fail during operation, which may lead to loss of directional control of the aeroplane during critical phases of take-off and landing. We are issuing this AD to require actions to correct the unsafe condition on these products. : This AD becomes effective May 19, 2010. On May 19, 2010, the Director of the Federal Register approved the incorporation by reference of British Aerospace Jetstream Series 3100 & 3200 Service Bulletin No. 32-JA030644, Revision No. 1, dated August 19, 2008; British Aerospace Jetstream Series 3100 & 3200 Service Bulletin No. 32-JM5414, dated August 6, 2004; and APPH Ltd. Bulletin 32-77, dated October 2003, listed in this AD. As of June 26, 2007 (72 FR 28587, May 22, 2007), the Director of the Federal Register approved the incorporation by reference of BAE Systems British Aerospace Jetstream Series 3100 & 3200 Service Bulletin 32-JA030644, dated October 6, 2003; and APPH Ltd. Service Bulletin 32- 76, Revision 1, dated August 2003, listed in this AD. As of May 22, 2003 (68 FR 16195, April 3, 2003), the Director of the Federal Register approved the incorporation by reference of British Aerospace Jetstream Series 3100 & 3200 Service Bulletin No. 32- JA020741, dated November 2, 2002.
2010-08-02: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Periodic operational check of the firewall hydraulic shutoff valves [FWSOV], made during routine maintenance, has revealed that the failure rate of that component is significantly higher than expected. Such a dormant failure, when combined with further possible failures, such as engine fire, may lead to an unacceptable reduction of safety margins. The unsafe condition is failure of the firewall hydraulic shutoff valve, which, in combination with an engine fire, could result in the spread of an engine fire beyond the firewall. We are issuing this AD to require actions to correct the unsafe condition on these products.
2004-02-04: This amendment adopts a new airworthiness directive (AD) that is applicable to all Dassault Model Falcon 900EX series airplanes. This action requires revising the airplane flight manual to advise the flightcrew about limitations on operating in icing conditions, and to require that the airplane be operated per these limitations. This action is necessary to ensure that the flightcrew is aware of the potential for reductions in climb performance in certain situations while operating in icing conditions, and the actions they must take to avoid this condition, which could result in an inability to avoid low- level obstacles during takeoff and consequent controlled flight into terrain. This action is intended to address the identified unsafe condition.
2010-08-05: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: It was noticed in production that in the area between frame (FR) C53.9 and FR C55 RH [right-hand], the distance between the route 9R of the In-Flight Entertainment system and the wire harness for the Lower Deck-Mobile Crew Rest system provisions is too small. This limited distance may cause chafing between the affected electrical harness 6581VB and the harness 5495VB or 6938VB. This condition, if not corrected, could lead to the short circuit of wires dedicated to oxygen, which, in case of emergency, could result in a large number of passenger oxygen masks not being supplied with oxygen, possibly causing personal injuries. * * * * * We are issuing this AD to require actions to correct the unsafe condition on these products.