# SDR 99ZZZX3671

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N747KT](https://openairdocs.org/aircraft/N747KT), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280020
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Firewall
- Part number: 05530311
- Condition: Cracked
- Location: Fuselage
- Part time: 389 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3671

## Discrepancy

AIRCRAFT IN SHOP FOR 100-HOUR INSPECTION.  REMOVED ENGINE COWL, FOUND FIREWALL CRACKED AT COWL MOUNT, FIRST MOUNT ON LEFT SIDE ON LOWER HALF OF FIREWALL.  SB 98-53-02 R1 WAS C/W AT TACHOMETER , 195.0 HOURS.  NO CRACKS FOUND AT THAT TIME.  REPAIRED FIREWALL PER SB 98-53-02 R1.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.