SDR AALA2019030869011

Service difficulty report · Apu · Airbus A321231

Difficulty date: March 5, 2019
Submitted: March 26, 2019
Operation: Air carrier
Aircraft: N508AY
Make and model: Airbus A321231
Aircraft serial: 3740
Aircraft time: 36,971 hours, 13,086 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Apu
Part number: 38007081WGEN
Condition: Leaking
Location: 000
Part time: 28,315 hours, 15,869 cycles
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

THE PILOT REPORTED THERE WAS A DIRTY SOCK ODOR, WHILE DESCENDING THROUGH 10,000FT. THE ODOR DIMINISHED AFTER 5 MINUTES, & THEN REOCCURED AFTER CONFIGURED FOR LANDING. MAINTENANCE ACCOMPLISHED CARD 26L00021001 & 26L00021002 AND DETERMINED THAT THE APU HAD AN INTERNAL LEAKAGE CAUSING THE SOURCE OF THE ODOR. REMOVED AND REPLACED THE APU.

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