Service difficulty report · Overheat Loop · Boeing 737890

Difficulty date
May 3, 2012
Submitted
May 7, 2012
Operation
Air carrier
Aircraft
N517AS
Make and model
Boeing 737890
Aircraft serial
35197
Aircraft time
12,669 hours, 3,916 cycles
Engine
Cfmint CFM567B273
Part
Overheat Loop
Condition
False Activation
Location
Window Heat
Stage of operation
LD
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

SIDE CAPTAINS "OVERHEAT" LIGHT ILLUMINATED ON TOUCHDOWN. RAN QRH. AFTER 5 MIN POSITIONED SW BACK ON. "OVERHEAT" LIGHT OUT BUT ALSO "ON" LIGHT OUT. ACFT GROUNDED. PERFORMED WINDOW HEAT BITE CHECK REF M FIM 30-41-00-810-801 WINDOW HEAT CONTROL UNIT BITE PROCEDURE. NO CURRENT FAULTS. WINDOW HEAT CONTROL OPS NORMAL. NO HISTORY 30 DAYS. INTERMITTENT FAULT.