# SDR AALA202604303842

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2026
- Submitted: April 30, 2026
- Operation: Air carrier
- Aircraft: [N920AN](https://openairdocs.org/aircraft/N920AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29521
- Aircraft time: 65,799 hours, 27,234 cycles
- System (JASC): [5523 · Elevator, Tab Structure](https://openairdocs.org/jasc/5523)
- Part: Tab
- Condition: Corroded
- Location: Zone 300 Elev
- 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/AALA202604303842

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: LEFT HAND HORIZONTAL STABILIZERS ELEVATOR TAB CONTROL MECHANISM LOWER SPRING ATTACH HARDWARE HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED LEFT HAND HORIZONTAL STABILIZERS ELEVATOR TAB CONTROL MECHANISM LOWER SPRING ATTACH HARDWARE AND BUSHING, PER PER B737 NG AMM 27-31-34. PERFORMED SATISFACTORY ELEVATOR AND ELEVATOR TRIM CONTROL SYSTEM, PER B737 NG AMM 27-31-00-710-801.

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