# SDR CALA2023030900650

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2023
- Submitted: March 9, 2023
- Operation: Air carrier
- Aircraft: [N69813](https://openairdocs.org/aircraft/N69813), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 43531
- Aircraft time: 28,903 hours, 10,361 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Beam
- Part number: 147A550423
- Condition: Corroded
- Location: Sta 947
- 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/CALA2023030900650

## Discrepancy

(B757-53-3-0737) MAIN CABIN FLOORBEAM UPPER SURFACE HAS CORROSION AT STA 947, LBL25.  TRANSCRIBED FROM HAECO GSO NRC# 9288445 DAMAGE FOUND OUT OF LIMITS IAW B737-900ER SRM 53-70-51-1A-1 AND INSTALLED REPAIR IAW B737-900ER SRM 53-70-51-2R-5.  HAECO GSO ME CH V890956 INSP QC194

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