Service difficulty report · Switch · Boeing 737*

Difficulty date
June 27, 2001
Submitted
December 11, 2001
Operation
General aviation
Make and model
Boeing 737*
Aircraft serial
32774
Part
Switch
Part number
088131007
Part serial
0105
Condition
Shorted
Location
Fire Detection
Part time
6 hours
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

SWITCHES SHORTED INTERNALLY. SHOULD RETURN TO N/O CONDITION. LOOKS LIKE MICROSWITCH FAILED INTERNALLY IN ASSY. REMOVED AND REPLACED SWITCHES, RETESTED NO MALFUNCTION OR DEFECTS NOTED. FIRE BELL CUTOUT SWITCHES AND SYSTEM OPS CHECKED GOOD. (M)