SDR ASAA2020032032468

Service difficulty report · Warning System · Boeing 737890

Difficulty date: March 17, 2020
Submitted: March 20, 2020
Operation: Air carrier
Aircraft: N536AS
Make and model: Boeing 737890
Aircraft serial: 35203
Aircraft time: 31,669 hours, 9,038 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: CL
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

CLIMBING THROUGH 14,00 RT PACK LIGHT ILLUMINATED. RT PACK LIGHT ON OVERHEAD PANEL STAYED ILLUMINATED AFTER RESETTING MASTER CAUTION. PRESSED TRIP RESET BUTTON ON OVERHEAD PANEL PER QRH AND RT PACK LIGHT RE-ILLUMINATED 10 SECOND LATER. RAN QRH. ISOLATED ISOLATION VALVE, CLOSED RIGHT PACK SWITCH OFF, SINGLE PACK OPS REMAINDER OF FLIGHT. GROUNDED - YES. PERFORMED B737-800 FIM 21-53 TASK 818, RAN R/H PACK FOR 30 MINS AND PERFORMED BITE TEST WITH NO DEFECT NOTED. THIS CLEARS MEL 21-1F.