SDR AALA201812109018

Service difficulty report · A/C Pack · Boeing 737823

Difficulty date: December 7, 2018
Submitted: December 10, 2018
Operation: Air carrier
Aircraft: N910NN
Make and model: Boeing 737823
Aircraft serial: 31160
Aircraft time: 19,601 hours, 7,987 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: A/C Pack
Condition: Tripped
Location: Left
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CLIMB, THE LEFT PACK TRIPPED. CAPTAIN LEVELED OFF AT FL250 AND FOLLOWED QUICK RESPONSE HANDBOOK. AN EMERGENCY WAS DELCARED, RETURNED TO DEPARTURE, AND LANDED WITHOUT INCIDENT. ACCOMPLISHED A PACK ZONE TEMPERATURE CONTROLLER BITE PROCEDURE IAW 21-62-00-810-801 FIM. NO FAULTS NOTED. REPLACED THE LEFT PACK IAW AMM 21-61-20, NO FAULTS NOTED.