Service difficulty report · Sensor · Boeing 737823

Difficulty date
March 9, 2021
Submitted
March 14, 2021
Operation
Air carrier
Aircraft
N991AN
Make and model
Boeing 737823
Aircraft serial
30920
Aircraft time
35,665 hours, 14,468 cycles
Part
Sensor
Part number
1296663
Part serial
16700
Condition
Faulty
Location
Lt A/C Pack
Part time
1,624 hours, 713 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS GROUNDED: FLIGHT DIVERTED TO LAS FOR LH PACK FAILURE. REPLACED PRECOOLER SENSOR 390 AND PRECOOLER VALVE (AALA202103139004) IAW AMM 36-12-03, AMM 36-12-01, AND JOB CARD JC08L40036001, OPS CHECK GOOD.