Emergency AD: Falcon 50 fire extinguishing system inspection

February 21, 2011

The European Aviation Safety Agency (EASA) issued an emergency airworthiness directive, requiring inspection of the fire extinguishing system of Dassault Falcon 50 and Falcon 50EX aircraft.

On two occurrences on Falcon 50 aeroplanes in service, it was detected that two pipes had been swapped in maintenance at the frame 42 firewall. The swapped lines are the extinguishing system line to engine # 2,and engine # 2 Low Pressure (LP) bleed line.

If the swapping of these two lines is not detected and corrected, in case of engine # 2 fire, the fire extinguishing capability would not be operational.

For this reason, the AD requires an inspection of the connection of the two lines (extinguishing and LP bleed lines) at frame 42 in the rear compartment and, in case of findings, proper re-installation of the lines. This AD requires as well reporting to Dassault Aviation. This AD is considered to be an interim measure and, depending on the inspection results provided by operators, further AD action may follow.

 


EASA issues emergency AD on Falcon 50 emergency brake installations

October 12, 2010

The European Aviation Safety Agency (EASA) issued an Emergency Airworthiness Directive (2010-0208-E) with regards to an inspection of emergency brake installations on Dassault Falcon 50 jets.

On two occurrences on Dassault Falcon 50 aircraft  in service, it was detected that two pipes of the emergency brake system #2 located near the nose landing gear bearing were swapped.

The swapping of these two pipes implies that when the Left Hand (LH) brake pedal is depressed, the Right Hand (RH) brake unit is activated, and conversely, when the RH brake pedal is depressed, the LH brake unit is actuated. This constitutes an unsafe condition, which may go unnoticed asthe condition is latent until the emergency brake system #2 is used. This condition, if not corrected, could ultimately lead to a runway excursion of the airplane.

The AD requires an inspection of the main landing gear braking system and, in case of findings, proper re-installation of the emergency brake system #2 pipes. It also requires painting the affected pipes for clear identification in order to avoid mistakes while reinstalling them after maintenance.

 


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