What was found
CENTER ADP C1 MODULE RPL. DUE TO PREVIOUS FAILURE OF THE PRESSURE TRANSDUCER CHECK VALVE IN THE FILTER MODULE, AS A PRECAUTION NEED TO REPLACE THE COMPLETE FILTER MODULE. NO LEAKS NOTED.
- Difficulty date
- January 2, 2011
- Submitted
- January 6, 2011
- Operation
- Air carrier
- Aircraft
- N771UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26932
- Aircraft time
- 61,301 hours, 11,338 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 2917 · Hydraulic Pressure Regulator, Main
- Part
- Check Valve
- Part number
- 71425
- Part serial
- 30
- Condition
- Faulty
- Location
- Hyd System
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.