Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
March 19, 2013
Submitted
March 22, 2013
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
989 hours, 328 cycles
Engine
Cfmint CFM567B27
Part
Warning Light
Condition
False Activation
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

INTERMITTENT MAINTENANCE LIGHT WHEN APU RUNNING. PERFORMED FIM TASK 49-60-801, APU BITE PROCEDURE- CURRENT STATS NO FAULTS FOUND, FAULT HISTORY, NO FAULTS FOUND, MX HISTORY MSG 49-72207 MAINTENANCE INDICATOR LIGHT SHOWS HIGH CURRENT, IAW TASK 49-60-TASK 801. GROUND VERIFICATION SUCCESSFUL NO LIGHTS ILLUMINATED. APU OPS CHECK NORMAL.