Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
January 14, 2018
Submitted
January 17, 2018
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
20,563 hours, 6,656 cycles
Part
Warning Light
Condition
False Activation
Location
Rt A/C Pack
Stage of operation
NR
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

RIGHT PACK ILLUMINATED ON RECALL EXTINGUSHES UPON RESET. ACFT GROUNDED. VERIFIED FAULT, ACCOMPLISHED A PACK/ZONE TEMP CONTROL BITE NR 1, SHOWS NO FAULTS, NR 2 SHOWS A FAULTED RAM AIR ACTUATOR. CLEARED FAULT, RAN BITE TEST 3 MORE TIMES WITH NO FAULTS IAW AMM 21-61-20-860-005.