# SDR CALA2023040300969

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2023
- Submitted: April 3, 2023
- Operation: Air carrier
- Aircraft: [N12216](https://openairdocs.org/aircraft/N12216), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 28776
- Aircraft time: 76,501 hours, 27,624 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: Unknown
- Part number: 147A854008
- Condition: Corroded
- Location: R2 Sta 967-986
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023040300969

## Discrepancy

CORROSION ON LOWER SILL STRUCTUREDOOR R2 BTW STA 967 TO STA 986. 5 (REF AAR NR 99960178) REMOVED AND REPLACED LOWER SILL BTW STA 967 TO 986.5 IAW B737-800 SRM 51-40-02-0G PAR. 4 AND 7.

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