# SDR DALA2026060903441

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2026
- Submitted: June 9, 2026
- Operation: Air carrier
- Aircraft: [N937AT](https://openairdocs.org/aircraft/N937AT), registered now
- Make and model: Boeing 717-200
- Registry model: [Boeing 717-200](https://openairdocs.org/model/boeing-717-200) (OpenAirDocs)
- Aircraft serial: 55091
- Aircraft time: 56,470 hours, 41,313 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Zone 100
- 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/DALA2026060903441

## Discrepancy

DIRTY SOCK ODOR ON GROUND AT GATE FROM BOTH PACKS INDEPENDENTLY ON APU AIR.   T/S PER FIM 49-50 FOUND OIL INSIDE THE APU PLENUM. R & R COELESSOR BAGS IAW AMM 21-54 OLD BAGS SMELLED LIKE OIL (8655364) (AIRCRAFT GROUNDED)

---
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.