Service difficulty report · Control Valve · Boeing 737990ER

Difficulty date
March 21, 2016
Submitted
March 25, 2016
Operation
Air carrier
Aircraft
N431AS
Make and model
Boeing 737990ER
Aircraft serial
43255
Aircraft time
9,491 hours, 3,106 cycles
Part
Control Valve
Part number
3966081
Part serial
6993
Condition
Malfunctioned
Location
Rt A/C Pack
Part time
9,543 hours, 3,125 cycles
Stage of operation
NR
How discovered
9
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

RIGHT PACK LIGHT ILLUMINATED ON RECALL. LIGHT EXTINGUISHED WHEN MASTER CAUTION RESET. ACFT GROUNDED. R & R RT FLOW CONTROL AND SHUTOFF VALVE IAW AMM 21-51-01, OPS TEST GOOD, RT PACK LIGHT STAYS OFF WHEN RECALL PUSHED. NO OTHER DEFECTS NOTED.