Service difficulty report · Transmitter · Boeing 747422

Difficulty date
February 17, 2013
Submitted
March 15, 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
Part
Transmitter
Condition
Failed
Location
Hyd System
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

HYDRAULIC OVERHEAT SYSTEM MESSAGE ILLUMINATED, RETURNED TO FIELD. REMOVED AND REPLACED THE NR 4 HYDRAULIC CASE DRAIN MODULE TEMPERATURE TRANSMITTER PER AM M 29-32-02. REMOVED AND REPLACED THE EDP AND TWO ADP CASE DRAIN FILTERS PER AMM 29-11-18. OPS TESTED NORMAL. LEAK CHECKED ALL THREE COMPONENTS, NO LEAK.