# SDR UALA2010072602678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2010
- Submitted: July 28, 2010
- Operation: Air carrier
- Aircraft: [N787UA](https://openairdocs.org/aircraft/N787UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26939
- Aircraft time: 58,189 hours, 8,720 cycles
- Engine: Pwa PW40903
- Engine time: 38,546 hours, 5,595 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Blades
- Condition: Damaged
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010072602678

## Discrepancy

NR 1 ENG, S/N 222140, DURING ACK BORESCOPE FOUND HPT-1 BLADE DAMAGED BEYOND SERVICEABLE LIMITS.  CHANGE ENGINE AS REQUIRED.  MATERIAL BREAK THROUGH AND BURN THROUGH INTO INTERNAL CAVITY.

---
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.