# SDR CALA2025052704961

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2025
- Submitted: May 27, 2025
- Operation: Air carrier
- Aircraft: [N12114](https://openairdocs.org/aircraft/N12114), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27556
- Aircraft time: 115,280 hours, 23,973 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 146N542537
- Condition: Corroded
- Location: Zone 100
- 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/CALA2025052704961

## Discrepancy

SUPPORT TASK:  AFT CARGO INTERCOSTAL STA 1420 TO 1400 BL 0 HAS CORROSION ON LOWER FLANGE AND REQUIRES REMOVAL PER FOM. TRANSCRIBED FROM HAECO GSO NRC 9286543. ESFR COMPLETED REMOVED, FABRICATED, INSTALLED INTERCOSTAL STA 1420 TO 1440 BL 0 CORROSION FOUND OUT LIMIT; ORIGINAL MAT .040, MATERIAL LOSS .030 MATERIAL REMAINED .010, REQ NEW INTERCOSTAL FABRICATED IN LOG PAGE 9286571 JOB NO 26571 IAW B757-200 SRM 51-40-02, 53-00-51, 51-40-03 DWG 145N5399 REV A HAECO GSO MECH V935255 INSP QC204 APPROVED

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