Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
July 1, 2019
Submitted
July 3, 2019
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
21,201 hours, 6,905 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
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

RIGHT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL, AND EXTINGUISHES ON RESET. GROUNDED - YES. RIGHT PACK/ZONE TEMPERATURE CONTROLLER BITE PER FIM 21-62 TASK 801 SHOWED "EXIT SRADA" FAULT LOGGED ON "PREV FLT" BUT NO FAULTS ON "BIT" AND VERIFY TEST PASSED. ACCOMPLISHED INITIAL EVALUATION FOR EXIT SRADA FAULT PER FIM 21-62 TASK 854 - AFTER ACTUATOR RESET PER STEP E.(2), PERFORMED PZTC VERIFY TEST PER FIM 21-62 TASK 801 - NO FAULTS.