Airworthiness Directives Service

The following are FAA Airworthiness Directives approved or modified in the last 60 days.

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AD Number Effective Date Manufacturer Description Recurring
2012-02-51 E 02/01/2012 Bell Helicopter To prevent failure of the main rotor blade and subsequent loss of control of the helicopter N
2012-02-12 02/15/2012 Bombardier Inc. To prevent the loss of ice protection systems for the angle of attack vanes, pitot probes, engine inlets,contd. N
2012-02-11 03/06/2012 Rolls-Royce Limited To revise the definition of shop visit & to detect cracks in the low-pressure (LP) turbine stage 1, 2, and,contd. Y
2012-02-07 03/06/2012 General Electric Co. To prevent critical life-limited rotating engine part failure, which could result in an,contd. Y
2012-02-05 03/02/2012 Thielert Aircraft Engines To prevent in-flight engine shutdown, which could result in loss of control of the airplane N
2012-01-11 02/29/2012 Cirrus Design Corp. To inspect and modify the air box flange welds and slots and install induction system air box seals as applicable N
2012-01-10 02/27/2012 General Electric Co. To prevent fan drive shaft failure, leading to uncontained engine failure and damage to airplane N
2012-01-09 02/29/2012 Boeing Commercial To prevent the in-flight loss of the off-wing escape slide, which could result in the availability of the,contd. N
2012-01-08 02/29/2012 328 Support Services GmbH To prevent failure of these components or their constituent parts which could lead to reduced control,contd. N
2012-01-07 02/27/2012 BRP-Rotax GmbH & Co. KG To prevent fuel leaks, which could result in an in-flight fire and damage to the aircraft N
2012-01-06 02/29/2012 Boeing Commercial To prevent water from accumulating in the forward lower lobe of te forward cargo compartment & entering,contd. N
2012-01-02 02/15/2012 Schempp-Hirth Kg. To prevent an engine pylon failure resulting in loss of control of the glider Y
2012-01-01 01/26/2012 Various Manufacturers To address the unsafe condition that may cause cracks on the surface of the crankshaft support,contd. N
2011-27-51 01/18/2012 Hawker Beechcraft To detect & correct conditions that could result in reduced nose down elevator control and loss of control of the,contd. N
2011-27-09 02/15/2012 Socata Groupe To prevent restricted movement of the aileron, resulting in reduced control of the airplane N
2011-27-08 02/08/2012 Agusta To detect & correct a fatigue crack on the elevator assembly which could lead to a failure of the elevator Y
2011-27-06 02/07/2012 Dassault Aviation To prevent loose internal wiring in the RAT generator, which could result in degraded direct current power to,contd. N
2011-27-05 02/07/2012 Saab AB, Saab Aerosystems To prevent improper release of the MLG during an emergency situation, possibly resulting in damage to the,contd. N
2011-27-04 12/29/2011 Hawker Beechcraft To check for correct minimum control speed markings on the airspeed indicators N
2011-27-03 02/10/2012 Boeing Commercial To prevent an undetected failure of the primary load path for the ballscrew in the drive mechanism,contd. Y
2011-27-02 02/03/2012 Lockheed Martin Corp. To detect and correct fatigue cracking, which could result in cracking that grows large enough to reduce,contd. Y
2011-27-01 01/27/2012 Turbomeca Engine Corp. To prevent over-temperature damage of the GG turbine, which could result in an uncommanded in-flight,contd. Y
2011-26-11 02/03/2012 General Electric Co. To detect cracks in the HPC stages 1-2 seal teeth due to heavy rubs that could result in failure of the seal,contd. N
2011-26-10 01/23/2012 Enstrom Helicopter To prevent failure of the cyclic trim system and subsequent loss of control of the helicopter N
2011-26-09 02/03/2012 Boeing Commercial To prevent failure of the fire seal, which could allow a fire in the fan compartment to spread beyond the,contd. N
2011-26-08 01/24/2012 Rolls-Royce Limited To prevent engine fuel leaks, which could result in risk to the airplane Y
2011-26-07 01/24/2012 Teledyne Continental To prevent engine failure and loss of control of the airplane due to migration of the magneto impulse,contd. N
2011-26-07 01/24/2012 Rolls-Royce Limited To prevent engine failure and loss of control of the airplane due to migration of the magneto impulse,contd. N
2011-26-06 01/23/2012 Airbus Industrie To identify the fire detection unit (FDU) part number (P/N) and serial number (S/N) of each engine N
2011-26-05 01/23/2012 Bombardier, Inc. To prevent failure of the aileron terminal quadrant support bracket which could result in an adverse,contd. N
2011-26-04 01/25/2012 Lycoming Engines To prevent failure of the fuel injector fuel lines that would allow fuel to spray into the engine compartment,contd. Y
2011-26-03 01/03/2012 Boeing Commercial To prevent electrical arcing on the fuel tank boundary structure or inside the main and center fuel tanks,contd. N
2011-26-01 01/17/2012 Piaggio Aero Ind. To detect and correct baggage door lockpins that do not engage properly and modify the locking mechanism,if necessary N
2011-25-51 12/28/2011 Continental Motors, Inc. To prevent failure of the starter adapter gear shaft, leading to an inoperable oil scavenge pump & engine,contd. N
2011-25-12 12/28/2011 Pratt & Whitney Canada To prevent failure of the sun gear, which will result in an engine in-flight shut down, possible uncontained,contd. Y
2011-25-11 01/17/2012 Boeing Commercial To prevent malfunction and thrust loss on both engines, which could result in a forced off-airport landing,contd. N
2011-25-10 01/17/2012 Pratt & Whitney To establish a new lower life limits of certain HPC shaft part numbers N
2011-25-09 01/10/2012 Pratt & Whitney To prevent failure of P/N (50L879) & P/N (53L030), which could lead to an uncontained engine failure & damage,contd. N
2011-25-08 01/17/2012 IAE International To prevent HPT case burn-through, uncontrolled under-cowl engine fire, and damage to the airplane Y
2011-25-07 01/17/2012 BAE Systems (Operations) To do an ultrasonic inspection of the passenger/crew door upper and lower guide plates for a split caused by,contd. Y
2011-25-06 01/17/2012 Boeing Commercial To prevent inadequate electrical bonding between the rub strips and the fuel access door, which can,contd. N
2011-25-05 02/22/2012 Boeing Commercial To prevent possible sources of ignition in a fuel tank caused by electrical fault or uncommanded dry,contd. N
2011-25-03 01/23/2012 Learjet Corp. To prevent fatigue cracking of the end cap of the MLG, which could result in the failure of the MLG actuator upon,contd. N
2011-25-02 12/22/2011 BRP-Powertrain GmbH & Co. To prevent in-flight failure of the engine and forced landing N
2011-25-01 01/17/2012 Apical Industries, Inc To install placards to aid in locating and deploying lifecrafts to prevent further injury or loss of life,contd. N
2011-24-04 C 01/03/2012 Boeing Commercial To detect and correct cracking on the lower cap of the rear spar of the left and right wings between stations,contd. Y
2011-18-21 02/13/2012 Rolls-Royce Limited To prevent deterioration of the engine combustion liner, which can result in combustion liner breakup, case,contd. Y
2011-18-12 02/08/2012 Eurocopter To modify the upper and lower fin attachment and to prevent failure of a spar, loss of a fin, a separated fin,contd. N
2011-06-06 R1 01/23/2012 Eclipse Aviation Corp. To prevent hard carbon buildup on the static vane, which could result in engine surges N
2010-19-06 R1 C 01/17/2012 Turbomeca Engine Corp. To prevent failure of the gas generator (GG) second stage turbine disc which could result in the release,contd. N
2010-06-12 R1 02/03/2012 Thielert Aircraft Engines To prevent engine in-flight shutdown, possibly resulting in reduced control of the aircraft Y
71-13-01 R1 03/08/2012 Textron Lycoming TO PREVENT POSSIBLE FAILURES OF THE FUEL INJECTOR MANIFOLD TO NOZZLE TUBE ASSEMBLIES N

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