# SDR AALA202602048005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2026
- Submitted: February 4, 2026
- Operation: Air carrier
- Aircraft: [N970NN](https://openairdocs.org/aircraft/N970NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31218
- Aircraft time: 31,331 hours, 13,373 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 147A566022
- Condition: Corroded
- Location: Zone 100
- 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/AALA202602048005

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION ON PASSENGER CABIN FLOOR STRUCTURE INTERCOSTAL AT BS 949, RBL 51. REPLACED INTERCOSTAL PER AARD 51-00-05-1.

---
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.