# SDR UIEA200700023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2007
- Submitted: February 2, 2007
- Operation: Air carrier
- Aircraft: [N409MC](https://openairdocs.org/aircraft/N409MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30558
- Aircraft time: 28,499 hours, 4,368 cycles
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: Window
- Part number: 65B270431
- Part serial: 00512
- Condition: Cracked
- Location: Cockpit
- Part time: 28,499 hours, 4,368 cycles
- 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/UIEA200700023

## Discrepancy

DURING C-CHECK INSPECTION, PROCESS FOUND FLIGHT DECK WINDOW NR 3L EXHIBITING SIGNS OF FAIL/SAFE INTERLAYER CRACKING IN RADIUS AREAS.  GENERAL IN-SERVICE USE AND LOCALIZED DELAMINATION OF WINDOW ASSEMBLY MADE IT IMPOSSIBLE TO POSITIVELY DETERMINE EXISTENCE AND EXTENT OF CRACKING.  WINDOW CHANGED PRECAUTIONARY.

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