# SDR IPXA2026013056154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2026
- Submitted: February 2, 2026
- Operation: Air carrier
- Aircraft: [N411UP](https://openairdocs.org/aircraft/N411UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23851
- Aircraft time: 39,473 hours, 26,446 cycles
- System (JASC): [5230 · Cargo/Baggage Doors](https://openairdocs.org/jasc/5230)
- Part: Intercostal
- Part number: 652533512
- Condition: Cracked
- Location: Zone 800
- 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/IPXA2026013056154

## Discrepancy

MDC DOOR INTERNAL STRUCTURE, AN INTERCOSTAL FOUND CRACKED AT FWD LWR SECTION.  REMOVED THE INTERCOSTAL IAW SRM 51-40-02-0G-0, AFTER EVALUATION FOUND CRACK TO BE OUT OF LIMITS, FLANGE 1.095", LENGTH 0.940", IAW 52-30-02-1A-1, DETAIL II, NOTE B.  INSTALLED NEW INTERCOSTAL SPLICE IAW SRM 51-40-02-0G-0, APPLIED TORQUE IN BOLTS IAW AMM 20-11-00-912-001, TABLE 203.

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