SDR CALA2015022700134

Service difficulty report · Apu · Boeing 777224

Difficulty date: February 27, 2015
Submitted: February 27, 2015
Operation: Air carrier
Aircraft: N77006
Make and model: Boeing 777224
Aircraft serial: 29476
Aircraft time: 80,317 hours, 8,195 cycles
System (JASC): 4920 · APU Core Engine
Part: Apu
Condition: Smoke
Location: Apu Bay
Stage of operation: TX
How discovered: O
Nature of condition: B, J
Precautionary procedure: D

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

What was found

AFTER ENG START ON TAXI OUT, VISIBLE SMOKE APPEARED & STRONG OIL ODOR. CREW REST SMOKE DETECTOR ACTIVATED. VERIFIED APU TO BE THE SOURCE OF SMOKE & ODOR. BOTH AIR COND PACKS, ALL COMPONENTS & PNEUMATIC DUCTS INSP, NO OIL CONTAMINATION FOUND. UPPER & LOWER RECIRC FILTERS REPLACED. BOTH ENG & PACKS OPERATED FOR 3 HRS, ODOR DISSIPATED GRADUALLY IAW AMM 71-00-00 & AMM 05-51-58-800-801C3.