Service difficulty report · Proximity Sensor · Boeing 747422

Difficulty date
September 25, 2014
Submitted
September 26, 2014
Operation
Air carrier
Aircraft
N122UA
Make and model
Boeing 747422
Aircraft serial
29168
Aircraft time
65,795 hours, 7,673 cycles
Engine
Pwa PW4056
Part
Proximity Sensor
Condition
Malfunctioned
Location
Thrust Reverser
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

ABORTED TAKEOFF 120-130 KTS, BRAKE TEMPS FROM 4 TO 7. FLIGHT DECK INDICATIONS SHOWED NR 1 REVERSER DEPLOYMENT. NO EVIDENCE OF REVERSER DEPLOYMENT, NO DAMAGE NOTED. CREW VERBAL:DURING T/O ROLL NR 1 REV AMBER UNLOCK INDICATOR PRESENT WITH NEED TO INCREASE RT RUDDER INPUT TO STAY STRAIGHT. REJECTED T/O. REPLACED PROXIMITY SENSORS S1607 AND S1608