- Difficulty date
- April 1, 2013
- Submitted
- May 9, 2013
- Operation
- Air carrier
- Aircraft
- N598UA
- Make and model
- Boeing 757222
- Aircraft serial
- 28751
- Aircraft time
- 55,546 hours, 15,561 cycles
- Engine
- Pwa PW2037
- Part
- Controller
- Part number
- 520854
- Part serial
- 15
- Condition
- Failed
- Location
- Cockpit
- 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.
What was found
HMG FAILED ACK OPS CK. REPLACED HMG CONTROLLER.