What was found
NR 1 ENGINE, VBV POSITION SIGNALS DISAGREE. ACFT GROUNDED. TROUBLESHOT IAW FIM 75-32 TASK 803. NO DEFECTS NOTED. COULD NOT GET MESSAGE TO APPEAR DURING NR 1 EEC BITE TEST OR ACTUATORS TEST. AIRCRAFT RELEASED FROM PLT.
- Difficulty date
- July 28, 2017
- Submitted
- August 1, 2017
- Operation
- Air carrier
- Aircraft
- N593AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 35,560 hours, 10,877 cycles
- System (JASC)
- 3150 · Central Warning
- Part
- Warning Message
- Condition
- False Activation
- Location
- Nr 1 Vsv
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.