SDR ASAA2014090809078

Service difficulty report · A/C Pack · Boeing 737890

Difficulty date: September 8, 2014
Submitted: September 10, 2014
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 28,084 hours, 8,608 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: A/C Pack
Condition: Unknown
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

UNABLE TO MAINTAIN ACCEPTABLE CLIMATE IN CABIN WITH TEMP SELECTOR DIALS IN AUTO MODE. TOO HOT IN FORWARD CABIN, TOO COLD IN AFT. REVERTED TO MANUAL CONTROL IN OFF POSITION TO MAINTAIN ACCEPTABLE CABIN TEMPS. ACFT GROUNDED. ACCOMPLISHED FIM 21-61, TASK 863, NO DEFECT NOTED, GROUND VERIFICATION OK.