SDR ASAA2015111813847

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: November 18, 2015
Submitted: November 20, 2015
Operation: Air carrier
Aircraft: N431AS
Make and model: Boeing 737990ER
Aircraft serial: 43255
Aircraft time: 8,170 hours, 2,676 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Ram Air Door
Stage of operation: CR
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

AT CRUISE ALTITUDE, BLUE "RAM AIR DOOR FULL OPEN" LIGHT STAYED ILLUMINATED. ACFT GROUNDED. FAULT CODE 215-160-00. PERFORMED BITE TEST OF PACK TEMP CONTROLLER, REF FIM 21-62, TASK 801. NO DEFECTS OR FAULTS LOGGED. PERFORMED FIM 21-51, TASK 803, NO DEFECTS NOTED. INSPECTED RAM AIR INLET AND EXHAUST FOR DEBRIS, NONE FOUND. INSPECTED RAM AIR INLET ACTUATOR, NO RED FAULT LIGHTS, ONLY GREEN LIGHT ILLUMINATED. IN AIR MODE, FLAPS RETRACTED BLUE "RAM AIR DOOR FULL OPEN" LIGHT EXTINGUISHES.