SDR ASAA2018100326347

Service difficulty report · Warning System · Boeing 737990ER

Difficulty date: October 3, 2018
Submitted: October 4, 2018
Operation: Air carrier
Aircraft: N403AS
Make and model: Boeing 737990ER
Aircraft serial: 41730
Aircraft time: 23,602 hours, 7,790 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: DE
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

TOP OF DESCENT ON MC RECALL. RT PACK LT ILLUM. EXT ON MC RESET. GROUNDED - YES. PERFORMED BITE CK OF RT PACK PER AMM 21-61-00, INITIAL FAULT WAS RAM AIR ACTUATOR, FAULT CLEARED, PERFORMED BITE CK AGAIN GOT GREEN GO LIGHT, ACCOMPLISHED OPS TEST OF RAM AIR ACTUATOR PER AMM 21-51-22, OP CKS GOOD NO FAULTS NOTED, INTERMITTENT FAULT.