Service difficulty report · Overheat Sensor · Boeing 737890
FAA SDR system
- Difficulty date
- April 10, 2014
- Submitted
- April 15, 2014
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35689
- Aircraft time
- 22,909 hours, 7,140 cycles
- Part
- Overheat Sensor
- Part number
- 902020
- Condition
- Failed
- Location
- Tailpipe
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE DETECTOR INOPERATIVE CAUTION LIGHT ILLUMINATED. ACFT GROUNDED. CONFIRMED FAULT, APU FIRE DETECTION WILL NOT TEST. FOUND M1925 APU TAILPIPE OVERHEAT DETECTOR ASSY DEFECTIVE (60 K OHM). REPLACED APU TAILPIPE OVERHEAT DETECTOR ASSY IAW AMM TASK 26-15-01, APU FIRE DETECTION SYS OPS GROUND FUNCTIONAL TEST IAW AMM TASK 26-15-00-710-801, OPS CHECKED NORMAL.