SDR ASAA2015041211315

Service difficulty report · Anti-Ice Valve · Boeing 737990ER

Difficulty date: April 12, 2015
Submitted: April 15, 2015
Operation: Air carrier
Aircraft: N408AS
Make and model: Boeing 737990ER
Aircraft serial: 41732
Aircraft time: 9,203 hours, 2,953 cycles
System (JASC): 3020 · Air Intake Anti/De-Ice System
Part: Anti-Ice Valve
Part number: 32156184
Part serial: 9663
Condition: Failed
Location: Nr 2 Engine
Part time: 9,203 hours, 2,953 cycles
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

ON DESCENT SELECTED ANT-ICE. THE RT COWL VALVE REMAINED OPEN, LIGHT REMAINED BRIGHT BLUE, TAI LIGHT ABOVE, THEN CAME ON AMBER VS GREEN. ADVANCED THROTTLES TO 50 PERCENT AND VALVE DID NOT OPEN. ACFT GROUNDED. REPLACED NR 2 ENGINE COWL TAI VALVE IAW AMM 30-21-11-400-801, REPLACED BONDING JUMPER IAW SWWPM 20-20-10, OPS CK GOOD.