What was found
SILENT SURGE FOUND 2.5 BLEED RING DRIVE ATTACK LINK SHEARED. NEEDS ENGINE CHANGE. ENG OFF, UNDER FW INSP. ENGINE REPLACED.
- Difficulty date
- April 22, 2011
- Submitted
- April 22, 2011
- Operation
- Air carrier
- Aircraft
- N181UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25278
- Aircraft time
- 82,260 hours, 10,079 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Engine
- Part number
- PW564R
- Part serial
- 727968
- Condition
- Surges
- Location
- Nr 2
- Part time
- 37,256 hours, 4,440 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.