# SDR CWQR20120906046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2012
- Submitted: September 12, 2012
- Operation: Air carrier
- Aircraft: [N918QS](https://openairdocs.org/aircraft/N918QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500223
- Aircraft time: 8,285 hours
- Engine: Rroyce AE3007C1
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Firewall
- Part number: 67521031
- Condition: Cracked
- 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/CWQR20120906046

## Discrepancy

DURING A SCHEDULED MX CHECK, FOUND A 4 INCH CRACK IN THE LT ENGINE INLET FIREWALL, PN 6752103-1.  A SERVICE CONDITION REPORT AND PICTURES HAVE BEEN SENT TO MFG UNDER SCR 633706.

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