What was found
DURING ENGINE FAULT CHECK ON FMC CDU ON T/C 78273000, FOUND SHORT TIME FAULT 75-30451 VBV POSITION SIGNAL DISAGREE ON #1 ENGINE. GROUNDED - YES. ON DEFERRAL.
- Difficulty date
- April 17, 2020
- Submitted
- April 21, 2020
- Operation
- Air carrier
- Aircraft
- N428AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36353
- Aircraft time
- 16,484 hours, 5,224 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7530 · Compressor Bleed Control
- Part
- Warning System
- Condition
- False Activation
- Location
- Cockpit
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.