SDR ASAA0954439

Service difficulty report · Switch · Boeing 737890

Difficulty date: February 16, 2009
Submitted: February 18, 2009
Operation: Air carrier
Aircraft: N519AS
Make and model: Boeing 737890
Aircraft serial: 36482
Aircraft time: 90 hours, 37 cycles
System (JASC): 3020 · Air Intake Anti/De-Ice System
Part: Switch
Condition: Unknown
Location: Anti-Ice System
Stage of operation: CL
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

AFTER LIFTOFF WING ANTI ICE SWITCH DID NOT MOVE TO OFF POSITION. SWITCH HAD TO BE MANUALLY POSITIONED OFF. PERFORMED PSEU BITE CHECK, NO RELEVANT FAULTS NOTED. PERFORMED WING ANTI ICING OPERATIONAL TEST IAW M/M 30 11 00 710 801, OPS CHECKS GOOD. PULLED AND TAGGED CIRCUIT BREAKERS C01399 AND C01400 PSEU PRI AND PSEU ALTN. CLOSED C/B'S C01399 AND C01400 AT CONCLUSION OF M/M OPERATIONAL TEST. PER SEAMC GROUND VERIFICATION SUCCESSFUL. NO HISTORY PAST 30 DAYS.