What was found
HYDIM 4 REMOVED FOR TROUBLESHOOTING. ACCOMPLISHED WIRING CHECK FOR SHORTS PER WDM 29-32-11 AND FOUND NO DEFECTS. REPLACED HYDIM CARD SYS4 A23 PRECAUTIONARY PER MM.
- Difficulty date
- February 17, 2013
- Submitted
- February 19, 2013
- Operation
- Air carrier
- Aircraft
- N174UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24381
- Aircraft time
- 90,000 hours, 10,029 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2910 · Hydraulic System, Main
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Hydraulic Sys
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.