# SDR DALA2025111208302

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2025
- Submitted: November 12, 2025
- Operation: Air carrier
- Aircraft: [N992AT](https://openairdocs.org/aircraft/N992AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55136
- Aircraft time: 52,733 hours, 36,748 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025111208302

## Discrepancy

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)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.