Service difficulty report · Fire Loop · Boeing 737*

Difficulty date
September 28, 2009
Submitted
December 1, 2009
Operation
General aviation
Make and model
Boeing 737*
Part
Fire Loop
Part number
325027302
Condition
Chafed
Location
Fan Case
Part time
8,105 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

(CAN) FIRE LOOP FOUND RUBBING ON SCREW HEAD. THIS HARNESS WAS FOUND TO HAVE CHAFED ALMOST HALF THE WAY THRU. HAD THIS WIRE HARNESS CONTINUED TO CHAFE THIS LOOP COULD HAVE SHORTED CAUSING A FALSE INDICATION IN THE COCKPIT THUS GIVING FIRE WARNINGS WHEN ACTUALLY NO FIRE WAS PRESENT CAUSING THE PILOTS TO BLOW THE FIRE BOTTLE AND SHUTTING DOWN THE ENGINE.