Service difficulty report · Valve · Boeing 737890

Difficulty date
April 23, 2015
Submitted
April 28, 2015
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
31,129 hours, 9,331 cycles
Part
Valve
Part number
3989084
Part serial
19205
Condition
Malfunctioned
Location
Lt A/C Pack
Part time
4,278 hours, 1,276 cycles
Stage of operation
NR
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

LEFT PACK LIGHT ILLUMINATES ON MASTER RECALL. LIGHT EXTINGUISHES ON RESET. GROUNDED - YES. REPLACED TEMP. CONT. VALVE REF. AMM 21-51-10 OPS CHECK NORMAL. PERFORMED PACK / ZONE TEMPERATURE CONTROLLER BITE TEST REF AMM TASK 21-61-00-700-806-002 NO FAULTS INDICATED.