# SDR IPXA2026102328019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2026
- Submitted: October 27, 2026
- Operation: Air carrier
- Aircraft: [N402UP](https://openairdocs.org/aircraft/N402UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23724
- Aircraft time: 39,932 hours, 27,205 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Door Sill
- Part number: 353N10101
- Condition: Delaminated
- Location: Zone 300
- 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/IPXA2026102328019

## Discrepancy

LIGHT DELAMINATION ALONG EXTERIOR VERTICAL EDGE OF APU INLET DOOR. QC MKD AS DB-13. COMPOSITE SKILL.   INSTALLED APU AIR INTAKE DOOR AND PERFORMED MANUALLY OPERATE FULL CLOSED AND FULL OPENED AND VERIFIED THE APU AIR INTAKE DOOR MOVE SMOOTHLY AND VERIFIED GAP (0.025") BETWEEN THE FUSELAGE AND LEADING-EDGE CENTERLINE THE AIR INTAKE DOOR AND FOUND WITHIN LIMITS IAW AMM 49-15-05-004-001.

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