What was found
12 STG BLADES HAVE DAMAGE AT ROOT. NR1 ENG BOROSCOPE FOR PARAMETER SHIFT. STG 7 HAS TIP TORN OFF THRU AREA F AND NUMEROUS BLADES DAMAGED AT ALL STAGES. REPLACED ENG NR1.
- Difficulty date
- October 29, 2009
- Submitted
- October 22, 2010
- Operation
- Air carrier
- Aircraft
- N771UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26932
- Aircraft time
- 55,873 hours, 10,508 cycles
- Engine
- Pwa PW4077
- Engine time
- 49,369 hours, 9,165 cycles
- System (JASC)
- 7230 · Turbine Engine Compressor Section
- Part
- Blades
- Condition
- Damaged
- Location
- Nr 1 Engine
- Part time
- 49,369 hours, 9,165 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.