# SDR 2008UALA04340

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2008
- Submitted: August 21, 2008
- Operation: Air carrier
- Aircraft: [N792UA](https://openairdocs.org/aircraft/N792UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26934
- Aircraft time: 49,319 hours, 7,255 cycles
- Engine: Pwa PW40903
- Engine time: 45,241 hours, 6,574 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Fod
- Location: Right
- Stage of operation: CL
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA04340

## Discrepancy

RIGHT ENGINE MOMENTARY OVERTEMP AFTER TAKEOFF.   THE ENGINE WAS SUBSEQUENTLY REMOVED FROM SERVICE AT SFO ON 8/23/08. SHOP TEARDOWN REVEALED A MISSING HPT STAGE-2 DUCT SEGMENT AT 7:00.  SEGMENT HAD METALLIC MATERIAL LODGED IN ONE OF ITS OUTER DIAMETER COOLING HOLES, INHIBITING COOLING AIR FROM ENTERING THE INTERNAL COOLING PASSAGES; SOURCE UNKNOWN.  THE OVERTEMP WAS IN AREA "B"; THIS DOES NOT REQUIRE HPT BLADE SECTIONING.

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