Service difficulty report · Relay · Boeing 747238B

Difficulty date
February 15, 2000
Submitted
October 4, 2000
Operation
Air carrier
Aircraft
N160UA
Make and model
Boeing 747238B
Aircraft serial
21237
Aircraft time
81,764 hours, 20,344 cycles
Engine
Pwa JT9D7J
Part
Relay
Condition
Malfunctioned
Location
Light Panel
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

EMERGENCY LIGHT OVERHEAD PANEL UNARMED LIGHT STAYS ON WITH SWITCH IN ARMED POSITION. *S/D* RELAY K2 WAS REPLACED (IN OVERHEAD CONTROL PANEL). NOTE FROM ENGINEERING: IT IS NORMAL FOR THE UNARMED LIGHT TO COME ON IF THE BUTTON AT DOOR 1 LT IS ACTIVATED (EVEN THOUGH THE COCKPIT EMERGENCY SWITCH IS IN THE ARMED POSITION). THIS CONDITION SHOULD BE CHECKED BEFORE REPLACING ANY PARTS.