SDR ASAA2017102222266

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: October 22, 2017
Submitted: October 25, 2017
Operation: Air carrier
Aircraft: N583AS
Make and model: Boeing 737890
Aircraft serial: 35681
Aircraft time: 39,109 hours, 11,561 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Lt A/C Pack
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

LEFT PACK LIGHT ILLUMINATED ON RECALL. LIGHT GOES OUT ON RESET. ACFT GROUNDED. PERFORMED A PACK TEMP BITE PROCEDURE IAW FIM 21-62, TASK 801. LEFT RAM ACTUATOR FAULT LIGHT ON. PERFORMED FIM 21-62, TASK 837, RAM ACTUATOR FAULT ISOLATION, NO FAULTS NOTED. PERFORMED RAM AIR INLET ACTUATOR INSTALLATION TEST, GROUND VERIFICATION SUCCESSFUL. NO DEFECTS NOTED.