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96-15-10: This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F28 Mark 0100 and 0070 series airplanes, that requires modification of the wheel brake assembly on the main landing gear. This amendment is prompted by reports of aluminum brake pistons that have ballooned and failed. The actions specified by this AD are intended to prevent such failure of the pistons, which could result in leakage of the hydraulic fluid, resultant loss of braking capability, and a possible brake fire.
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2010-03-04: We are adopting a new 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:
An operator reported a short circuit between a generator power cable and an anti-ice shutoff valve, which was caused by chafing between the cable and the valve; the insulation of the cable and surrounding sleeve were worn off.
An investigation revealed that a scarce clearance between the cables and adjacent parts, together with vibrations of generator power cables favoured by insufficient clamping, was the root cause of the damage.
If left uncorrected, this situation could lead to short circuits with possible fire and/or loss of important aircraft systems.
We are issuing this AD to require actions to correct the unsafe condition on these products.
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2010-03-07: 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 has been found occurrences of main landing gear (MLG) trailing arm pins broken due to a fatigue mechanism induced by an excessive torque applied during the assemblage of auxiliary door support attachment and consequent deformation of the MLG trailing arm axle. A broken pin can lead to loss of the MLG trailing arm axle, disconnecting the trailing arm from the main strut, which affects the airplane controllability on ground.
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We are issuing this AD to require actions to correct the unsafe condition on these products.
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95-03-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Canadair Model CL-600-1A11, -2A12, and -2B16 series airplanes, that requires a functional check and a test of the idle stop function of the engine throttle quadrant; repair or replacement, if necessary; and eventual replacement of the engine throttle quadrant with a new model. This amendment is prompted by reports of unintentional engine shutdown on certain of these airplanes due to problems associated with operation of the engine throttle quadrant. The actions specified by this AD are intended to ensure the proper operation of the throttle quadrant so as to prevent inadvertent shutdown of an engine while the airplane is taxiing or in flight.
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94-11-10: This document adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 series airplanes, that requires modification of certain evacuation door slides. This amendment is prompted by a report that, during flight crew training, the toe end of the slide lane tore. The actions specified by this AD are intended to prevent damage to the slide, which could render the slide unusable, contribute to injury of passengers on the slide, and delay or impede the evacuation of passengers during an emergency.
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2010-02-06: 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:
Cracks have been found in central spreaders P/N [part number] 92-000100-200-1 or P/N 92-000101-200-1. This may heavily affect the structural integrity of the seat.
Failure of the central spreaders could result in injury to an occupant during emergency conditions. We are issuing this AD to require actions to correct the unsafe condition on these products.
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94-09-14: This amendment adopts a new airworthiness directive (AD), applicable to certain SAAB Model SAAB 340B series airplanes, that requires replacement of the existing actuator assembly on the motor operated fuel valve assembly with a new, improved actuator assembly. This amendment is prompted by electromagnetic interference (EMI) tests, which indicate that the actuator assemblies of certain fuel shut-off valves may fail to function after exposure to EMI, such as lightning or high intensity radiated fields. The actions specified by this AD are intended to prevent loss of function of the fuel shut-off valves, which could result in unchecked fuel leakage or fuel imbalance after fuel system failure.
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97-03-08: This amendment adopts a new airworthiness directive (AD), applicable to certain Jetstream Model 4101 airplanes, that requires repetitive inspections to detect cracking of the offset lightening hole on the drag brace of the left and right main landing gear (MLG); and replacement of these braces with braces having a centralized lightening hole. This replacement terminates the repetitive inspections. This amendment is prompted by a report indicating that fatigue cracking was detected on the upper link of a drag brace. The actions specified by this AD are intended to prevent fatigue cracking of the drag braces of the MLG, which, if not corrected, could cause the MLG to fail and, consequently, result in reduced controllability of the airplane during takeoff, landing, and taxiing.
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2010-01-12: 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:
The result of re-assessment of rotor burst analysis has shown the possibility of loss of electrical power supply to the following aircraft systems: Air Data System (ADS), Ailerons, Multifunctional spoilers and rudder, which result in loss of the aircraft pitch and yaw control.
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We are issuing this AD to require actions to correct the unsafe condition on these products.
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95-19-05: This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace Model BAe 146-100A and -200A airplanes, that requires modification of the glareshield and certain electrical equipment of the airplane. This amendment is prompted by a report indicating that, if the lift spoilers fail to deploy on landing, the flight crew may not receive any indication that this situation exists. The actions specified by this AD are intended to ensure that the flight crew is advised when the lift spoilers fail to deploy on landing; such failure could result in the airplane overrunning the end of the runway during landing.
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