SDR DALA2025111208302

Service difficulty report · Oil System · Boeing 717200

Difficulty date: November 11, 2025
Submitted: November 12, 2025
Operation: Air carrier
Aircraft: N992AT
Make and model: Boeing 717200
Aircraft serial: 55136
Aircraft time: 52,733 hours, 36,748 cycles
System (JASC): 4990 · APU Oil System
Part: Oil System
Condition: Leaking
Location: Apu
Stage of operation: TX
How discovered: O
Nature of condition: K, B
Precautionary procedure: O

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

What was found

SMKE - AFTER STARTING APU AND TURNING ON PACKS, CABIN FILLED WITH ACRID, RUBBERY, BURNING VISIBLE SMOKE. TURNED OFF PACKS AND SMOKE DISSIPATED. FOUND APU OIL TANK EMPTY AND BLEED DUCTS CONTAMINATED WITH OIL. CLEANED BLEED DUCTS, REPLACED COALESCER BAGS AND PERFORMED ECS/DUCT BURNOUT WITH ENGINE BLEEDS.(7379712)

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