# SDR AALA202405209633

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2024
- Submitted: May 20, 2024
- Operation: Air carrier
- Aircraft: [N947AN](https://openairdocs.org/aircraft/N947AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29536
- Aircraft time: 67,228 hours, 28,240 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- Part number: UNKNOWN
- Condition: Cracked
- Location: Bs 663
- 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/AALA202405209633

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CRACK IN ENVIRONMENTAL CONTROL SYSTEM BAY (CENTER WING SECTION REAR SPAR) HORIZONTAL STIFFENER AT STA 663, RBL 6L.16. REPLACED STIFFENER PER AARD 51-00-05-01,.

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