Service difficulty report · Control Valve · Boeing 737890

Difficulty date
August 24, 2014
Submitted
August 28, 2014
Operation
Air carrier
Aircraft
N516AS
Make and model
Boeing 737890
Aircraft serial
39044
Aircraft time
21,797 hours, 6,745 cycles
Part
Control Valve
Part number
3989083
Part serial
1582
Condition
Malfunctioned
Location
Lt A/C Pack
Part time
57,354 hours, 30,341 cycles
Stage of operation
NR
How discovered
9
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 ILLUMINATED DURING RECALL. ACFT GROUNDED. SYSTEM STILL HAS A HARD FAULT FOR NR 1 TCV. REPLACED NR 1 TCV IAW AMM 21-51-10-000-801 AND AMM 21-51-10-400-801, LEAK CHECK GOOD. OPS CHECK GOOD IAW AMM 21-61-00-700-806-002.