SDR ASAA2015090412920

Service difficulty report · A/C Pack · Boeing 737890

Difficulty date: September 4, 2015
Submitted: September 9, 2015
Operation: Air carrier
Aircraft: N564AS
Make and model: Boeing 737890
Aircraft serial: 35103
Aircraft time: 34,144 hours, 10,485 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: A/C Pack
Condition: Unknown
Stage of operation: TX
How discovered: O
Nature of condition: O
Precautionary procedure: D

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

What was found

FWD AND AFT TEMP UNCONTROLABLE DURING TAXI. ACFT GROUNDED. PERFORMED PACK TEMP CONTROL BITE PROCEDURE, IAW FIM 21-62, TASK 80, NO FAULTS NOTED. PERFORMED OPS TEST OF TRIM AIR PRSOV IAW AMM 21-62-00, OPS NORMAL, NO FAULTS NOTED. PERFORMED OPS CHECK OF CABIN TEMP CONTROL AND INDICATION IAW AMM 21-61-00, OPS CHECKED NORMAL. COULD NOT DUPLICATE FAULT AND NO HISTORY 30 DAYS.