SDR UPS405144

Service difficulty report · Fire Loop · Boeing 747123

Difficulty date
December 15, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N671UP
Make and model
Boeing 747123
Aircraft serial
20323
Part
Fire Loop
Condition
Malfunctioned
Location
Apu
Stage of operation
CR
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

WHILE IN FLIGHT AND WITH APU OFF, APU DET LOOP-A ILLUMINATES OCCASIONALLY, SETTING OFF APU FIRE SIGNAL. APU FIRE LOOP-A PLACARDED INOP PER MEL 26-7 ASSIGNED M-103273.