# SDR CALA2023041901156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2023
- Submitted: April 19, 2023
- Operation: Air carrier
- Aircraft: [N13138](https://openairdocs.org/aircraft/N13138), registered now
- Make and model: Boeing 757-200 SERIES
- Registry model: [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series) (OpenAirDocs)
- Aircraft serial: 30351
- Aircraft time: 85,724 hours, 20,350 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: Beam
- Part number: 141N293123
- Condition: Corroded
- Location: Sta 324
- 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/CALA2023041901156

## Discrepancy

(SUPPORT TASK) MAIN CABIN FLOOR BEAM STA 324 RBL 45 UPPER SURFAC E CORRODED.  TRANSCRIBED FROM HAECO GSO NR 9280358. HAECO GSO MECH V900838 INSP QC204 REPAIRED STA 324 UPPER 7 CHORD IAW B757-200 SRM 53-10-08-2R-1 RE PAIR 1 FIG 201  THIS IS A CATEGORY B REPAIR. INSPECTION THREHOLD 37,500 FLIGHT CYCLES AFTER AIRPLANE DELIVERY OR 12,000 FLIGHT C YCLES AFTER REPAIR, WHICH EVER COMES LATER.

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