# SDR 97ZZZX3723

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Boeing 747136
- Engine: Pwa JT9D7A
- System (JASC): [7240 · Turbine Engine Combustion Section](https://openairdocs.org/jasc/7240)
- Part: Comb Chamber
- Part number: BD5144
- Condition: Cracked
- Location: Diffuser Case
- Part time: 47,362 hours
- Stage of operation: CL
- Nature of condition: M
- Precautionary procedure: J, E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX3723

## Discrepancy

ON INITIAL CLIMB, NR 2 ENGINE OVERTEMP LIGHT ILLUMINATED (970 DEGREE CELSIUS INDICATED).  PARAMETERS RAN DOWN AND ENGINE FIRE CHECK LIST CARRIED OUT.  A THREE-ENGINE APPROACH AND LANDING CARRIED OUT FOLLOWING FUEL DUMP PROCEDURE.  GROUND CHECKS REVEALED ENGINE COMBUSTION CHAMBER OUTER CASING (CCOC) CRACKED AT L-FLANGE LOCATION.  PART TOTAL CYCLES, 10,669.

---
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.