SDR DALA2026081804717

Service difficulty report · Apu · Airbus BD5001A11

Difficulty date: August 8, 2026
Submitted: August 19, 2026
Operation: Air carrier
Aircraft: N325DU
Make and model: Airbus BD5001A11
Aircraft serial: 55272
Aircraft time: 7,555 hours, 3,066 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Condition: Odor
Location: Zone 100
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

FUME- DURING APU ON DEPARTURE, NOTICED WET DOG SMELL MOMENTARILY ON CLIMB. STRONG AROMA ON DECENT. DONNED O2 MASKS. DETERMINE SOURCE OF ODOR IS FROM APU. APU DEFERRED INOPERATIVE. REPLACED RECIRC FILTERS. NO FURTHER ODORS. A/C RTS. LATER REPLACED APU. (LP 9568150, 9568152 - AIRCRAFT WAS GROUNDED)

More about the Airbus BD-500-1A11