SDR ASAA2016121919097

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: December 19, 2016
Submitted: December 21, 2016
Operation: Air carrier
Aircraft: N434AS
Make and model: Boeing 737990ER
Aircraft serial: 61620
Aircraft time: 3,090 hours, 967 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Unknown
Condition: Malfunctioned
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 CONTROLLER ON RECALL. RESETS WITH MASTER CAUTION. GROUNDED - YES. LEFT PFTC LAST LEG SHOWS 5 EA FAULTS RELATED TO LEFT TCV. (21-51261, 21-51264, 21-51265, 21-51510, & 21-51267). RIGHT PFTC HAS NOTHING LOGGED FOR LAST LEG, REF B737-900 FIM 21-62T874 INITIAL EVAL FOR ALL FAULTS FIM 21-62T801 SHOWS "NO FAULTS". GROUND VERIFICATION SUCCESSFUL - ALL FAULTS CLEARED.