What was found
AFTER ENGINE START, NR 4 ADP INOP WITH ADP NR 4 SWITCH IN AUTO OR CONTINUOUS. RUN LIGHT EXTINGUISHED AND ADP PRESSURE LIGHT ILLUMINATED. RESET NR 4 ADP OVERSPEED SWITCH AND SERVICED NR 4 ADP PER MM 29-11-04 AND 12-13-09. TEST OK.
- Difficulty date
- April 5, 2006
- Submitted
- April 10, 2006
- Operation
- Air carrier
- Aircraft
- N355MC
- Make and model
- Boeing 747341
- Aircraft serial
- 23395
- Aircraft time
- 63,643 hours, 12,283 cycles
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Condition
- Malfunctioned
- Location
- Hyd System
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.