Service difficulty report · Modulating Valve · Boeing 737890

Difficulty date
October 15, 2012
Submitted
October 18, 2012
Operation
Air carrier
Aircraft
N534AS
Make and model
Boeing 737890
Aircraft serial
35202
Aircraft time
7,049 hours, 2,180 cycles
Part
Modulating Valve
Part number
3989083
Part serial
1612
Condition
Faulty
Location
Nr 2 A/C Pack
Part time
61,431 hours, 34,720 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

RT SIDE PACK LIGHT ILLUMINATED ON RECALL. LIGHT EXTINGUISHED WITH PUSHING MASTER RECALL. PERFORMED NR 2 PACK BITE IAW MM 21-51-10. FOUND NR 2 PACK TCV FAULT. R & R RT TCV. LK & OPS CK GOOD. AMM REF 21-51-10 BITE TEST GOOD IAW 21-61-00. ALL FAULTS CLEARED.