# SDR KCSA202307141077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2023
- Submitted: July 15, 2023
- Operation: Air carrier
- Aircraft: [N709CK](https://openairdocs.org/aircraft/N709CK), registered now
- Make and model: Boeing 747-4B5
- Registry model: [Boeing 747-4B5](https://openairdocs.org/model/boeing-747-4b5) (OpenAirDocs)
- Aircraft serial: 26396
- Aircraft time: 102,687 hours, 16,946 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Firewall
- Part number: UNKNOWN
- Condition: Cracked
- Location: Unknown
- 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/KCSA202307141077

## Discrepancy

(FAA FINDING) STATION 2658 APU FIREWALL IS CRACKED IN 2 PLACES LBL28 WL264 AND LBL 26 WL 260 MARKED FAA-03

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