Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
August 27, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N486AS
Make and model
Boeing 737990ER
Aircraft serial
44107
Aircraft time
22,196 hours, 7,083 cycles
Part
Warning Light
Condition
False Activation
Location
Lt A/C Pack
Stage of operation
NR
How discovered
9
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

L PACK LIGHT ILLUMINATED DURING RECALL BUT EXTINGUISHES WHEN RESETTING MASTER CAUTION SYSTEM. GROUNDED - YES. (RESOLVED ON W/O: 1883367 TASKCARD: N/R-00001 ) VERIFIED DISCREP. ACCOMPLISHED B737-900 FIM 21-62 TASK 801. THIS PACK TCV FAULT SHOWN. PER FORMED FIM 21-62 TASK 830, INITIAL EVALUATION GOOD. NO HISTORY LAST 30 DAYS. RAN PACKS WITH VARING TEMPS, DISCREP. DID NOT RETURN. THIS CLEARS MEL 21-32B, PLC C/N 27019486 RMVD. SEAMC NOT. WILL.