Service difficulty report · Control Unit · Boeing 737924ER

Difficulty date
October 8, 2014
Submitted
October 8, 2014
Operation
Air carrier
Aircraft
N68822
Make and model
Boeing 737924ER
Aircraft serial
42178
Aircraft time
1,216 hours, 441 cycles
Part
Control Unit
Part number
35008307
Part serial
5440
Condition
Unserviceable
Location
Overheat Sys
Stage of operation
TO
How discovered
O
Nature of condition
N
Precautionary procedure
C

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

What was found

WHEEL WELL LIGHT CAME ON INTERMITTENT ON TAKEOFF FOR ABOUT 1 SEC & AGAIN MOMENTARILY ABOUT 2 MINUTES LATER. INSPECTED WW LOWER BODY OVERHEAT SENSOR M270 & PERFORMED FAULT ISOLATION RESISTANCE CHECK. IAW FIM 26-18-00-810-802 STEP H 8 & I FOR OPEN LOOP CHECK OF SENSOR. SENSOR CHECKED GOOD. R & R OVERHEAT DETECTOR CONTROL UNIT IAW AMM 26-18-01-400-801 & OPERATIONAL TEST IAW AMM 26-18-00-710-801.