# SDR AALA202603124308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2026
- Submitted: March 12, 2026
- Operation: Air carrier
- Aircraft: [N990AN](https://openairdocs.org/aircraft/N990AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29563
- Aircraft time: 49,213 hours, 20,757 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Crease Beam
- Part number: 654A00041073
- Condition: Cracked
- 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/AALA202603124308

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CARCK IN LEFT HAND FORWARD ENTRY WAY LOWER SILL INNER CHORD (CREASE ANGLE) AT STA 301 AND LBL 54. REPLACED INNER CHORD 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.