# SDR CALA2025011300086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2025
- Submitted: January 13, 2025
- Operation: Air carrier
- Aircraft: [N17730](https://openairdocs.org/aircraft/N17730), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28798
- Aircraft time: 79,168 hours, 28,673 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: 147A8540U7
- Condition: Corroded
- Location: Zone 200
- 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/CALA2025011300086

## Discrepancy

(B737-06-3-0049) REF LP 3252323 AND AERSALE NR 21748 CORROSION ON L-2 DOOR LOWER SILL STRUCTURE INNER CHORD STA 991 TO 900. REMOVED AND REPACED NEW INNER CHORD ON L-2 DOOR LOWER SILL STRUCTURE STA 900-1006 LBL 50 REF B737-700 SRM 51-40-02-0G-0 REF LP 3252323.

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