Service difficulty report · Control Unit · Boeing 727227

Difficulty date
January 20, 2012
Submitted
January 23, 2012
Operation
Air carrier
Aircraft
N495FE
Make and model
Boeing 727227
Aircraft serial
21669
Aircraft time
39,930 hours, 28,057 cycles
Part
Control Unit
Part number
65249203
Part serial
R00702
Condition
Failed
Location
Fire Detection
Stage of operation
CR
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

AT ALTITUDE, RECEIVED WHEELWELL LIGHT & BELL, PERFORMED PHASE 1, LOWERED GEAR & OPENED MAIN GEAR DOORS, LIGHT REMAINED ON, ON TEST, BELL DID NOT SOUND. AFTER ACFT PULL IN THE GATE, INSPECTED WHEEL WELL TIRES AND BRAKES NO DISCREPANCY FOUND. INSPECTED FIRE LOOP IN WW NO CHANGE. R & R FIRE DETECTION CONTROL UNIT IAW MM 26-12-001-1-0. LIGHT CK GOOD. OPS TEST SEVERAL TIME SYS CK GOOD. ACFT OK FOR FLT.