Service difficulty report · Vbv · Boeing 737990ER

Difficulty date
June 18, 2022
Submitted
June 22, 2022
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
23,057 hours, 7,238 cycles
Engine
Cfmint CFM567B27E
Part
Vbv
Part number
UNKNOWN
Condition
False Indication
Location
Unknown
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

REF T/C 78273000, ENG 2 SHORT TIME FAULT 75-30452. THE VBV POSITION SIGNALS DISAGREE. GROUNDED - YES. PERFORMED BITE CHECK OF FMC CDU ON ENG #2 PER B737-900 AMM 73-21-00 NO ACTIVE FAULTS NOTED.