Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
April 2, 2018
Submitted
April 4, 2018
Operation
Air carrier
Aircraft
N453AS
Make and model
Boeing 737990ER
Aircraft serial
36354
Aircraft time
16,750 hours, 5,563 cycles
Part
Warning Light
Condition
False Activation
Location
Cabin Pressure
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

AUTOFAIL CAUTION LIGHT ILLUMINATED THROUGH 6000 FT ACCOMPLISHED QRH AUTO FAIL CAUTION LIGHT EXTINGUISHED IN ALTN MODE. PRESSURIZATION WAS NORMAL. ACFT GROUNDED. VERIFIED AUTO FAIL LIGHT ON. SWITCH TO AUTO MOVED SWITCH MOMENTARILY TO MANUAL POSITION THEN BACK TO AUTO. AUTO FAIL LIGHT REMAINS EXTINGUISHED WITH SELECTOR IN AUTO POSITION. FAULT HAS BEEN CORRECTED CONTROLLER OPS NORMALLY IAW FIM 21-31 TASK 801.