SDR ASAA2019111231279

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: November 10, 2019
Submitted: November 13, 2019
Operation: Air carrier
Aircraft: N589AS
Make and model: Boeing 737890
Aircraft serial: 35686
Aircraft time: 45,738 hours, 13,683 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 MASTER CAUTION RECALL. EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE CHECK OF #1 ZONE / TEMP CONTROLLER REF B737-800 AMM 21-60-00. CURRENT FAULT RAM AIR ACT. RERAN BITE CHECK NO FAULTS NOTED.