# SDR AALA201906179033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2019
- Submitted: June 17, 2019
- Operation: Air carrier
- Aircraft: [N963AN](https://openairdocs.org/aircraft/N963AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29543
- Aircraft time: 55,586 hours, 22,658 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Torque Box
- Part number: 148A86151
- Condition: Corroded
- Location: Bs 1088-1156
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201906179033

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION ON APU TORQUE BOX LEFT HAND LOWER CHORD BETWEEN BS 1088 AND BS 1156. REPAIRED CHORD PER EA 294911.

---
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.