What was found
(CAN) EICAS MESSAGE INDICATING NR 1 HYD SYS FAILURE. AIR DRIVEN PUMP FAILED. EDP UNDER MEL. ALTERNATE SELECTION WAS USED FOR LANDING GEAR. REPLACED ADP AND REACTIVATER EDP BY REPLACING TWO HYD LINES A/C SERVICEABLE.
- Difficulty date
- February 27, 2000
- Submitted
- January 22, 2001
- Operation
- Air carrier
- Make and model
- Boeing 747433
- Aircraft time
- 32,274 hours
- Engine
- Pwa PW4056
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Part number
- 1090018
- Condition
- Failed
- Location
- Hydraulic Sys
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.