# SDR IPXA2026012925306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2026
- Submitted: January 29, 2026
- Operation: Air carrier
- Aircraft: [N443UP](https://openairdocs.org/aircraft/N443UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 27388
- Aircraft time: 31,715 hours, 20,688 cycles
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: Element
- Condition: Burned
- Location: Lt Window
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026012925306

## Discrepancy

LEFT FWD WINDOW LOWER ELEMENT BURN OUT DURING FLIGHT. REPLACEED THE L1 WINDSHIELD. ALSO REPLACED M191 HEAT CONTROL UNIT PRECAUTIONARY PER AMM 30-41-01-004-001. OPS CHECK GOOD. REF BARCODE T3F18E0086B65 FOR RII SIGNOFF OF L1 WINDSHIELD REPLACEMENT.

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