What was found
HMG FAILED TEST. HMG FAILURE (SHOP RECORDS INDICATED NO CLEAR CAUSE, ONLY THAT R22 AND D4 CIRCUITS WERE REPLACED). REPLACED HMG, OPS CHECKED NORMALLY.
- Difficulty date
- December 19, 2007
- Submitted
- February 5, 2008
- Operation
- Air carrier
- Aircraft
- N549UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25397
- Aircraft time
- 60,753 hours, 17,629 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 2910 · Hydraulic System, Main
- Part
- Hydraulic System
- Part number
- X6719520854
- Condition
- Faulty
- Location
- Hmg
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.