SDR ASAA2016032116044

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: March 21, 2016
Submitted: March 23, 2016
Operation: Air carrier
Aircraft: N529AS
Make and model: Boeing 737890
Aircraft serial: 35198
Aircraft time: 23,472 hours, 7,061 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: A/C Pack
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

RIGHT PACK LIGHT ILLUMINATED ON RECALL DURING DESCENT CHECKLIST. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST, REF AMM TASK 21-61-00-700-806-002, ON RT PACK AND FOUND RAM AIR ACTUATOR LIGHT ILLUMINATED AFTER BIT BUTTON PUSHED, CONTINUED TEST AND PRESSED VERIFY AND WATCHED RT PACK INLET EXERCISE OPEN AND CLOSED. PRESSED RESET BUTTON, THEN ACCOMPLISHED THE COMPLETE BITE TEST 2 MORE TIMES WITH NO FAULTS NOTED, NO HISTORY FOUND IN PAST 30 DAYS. OK FOR CONTINUED SERVICE.