Service difficulty report · Valve · Boeing 737990ER

Difficulty date
December 28, 2022
Submitted
January 3, 2023
Operation
Air carrier
Aircraft
N402AS
Make and model
Boeing 737990ER
Aircraft serial
41189
Aircraft time
37,502 hours, 11,963 cycles
Engine
Cfmint CFM567B27E
Part
Valve
Part number
1821M60P04
Part serial
GRTR9743
Condition
Faulted
Location
Nr 2 Engine
Part time
37,546 hours, 11,977 cycles
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

REF ASA TASK CARD 78273000 FOUND ENGINE #2 FAULT MESSAGE. ENGINE 2 SHORT TIME FAULT. FAULT CODE 75-30602. THE TBV POSITION SIGNALS DISAGREE. GROUNDED - YES. REMOVED & REPLACED #2 ENG TBV PER B737-900 AMM 75-23-01.