SDR DXTA2011102804768

Service difficulty report · Apu · Amd FALCON2000

Difficulty date: October 27, 2011
Submitted: October 28, 2011
Operation: Air carrier
Aircraft: N236QS
Make and model: Amd FALCON2000
Aircraft serial: 136
Aircraft time: 8,827 hours, 5,589 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Condition: Odor
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON DESCENT AT ABOUT 25,000 FEET A STRONG ACRID SMELL WAS NOTICED PRIMARILY IN THE COCKPIT AND NOT THE CABIN. NO SMOKE WAS VISUALLY DETECTED. RAN APU AND ODOR WAS DETECTED. FOUND APU WAS JUST CHANGED 10-24-11 FOR OIL IN ECS SYS, SUSPECT DECONTAMINATION CHECK WAS NOT COMPLIED WITH. BORECOPED APU, CONDENSER, AND BEAT EXCHANGER WITH NO OIL NOTED. COMPLIED WITH DECONTAMINATION CHECK & RAN APU FOR 2 HOURS HOT WITH NO DEFECTS NOTED IAW MM 21-206.