Service difficulty report · Fault Code · Boeing 737990ER

Difficulty date
April 10, 2020
Submitted
April 21, 2020
Operation
Air carrier
Aircraft
N434AS
Make and model
Boeing 737990ER
Aircraft serial
61620
Aircraft time
16,135 hours, 5,070 cycles
Engine
Cfmint CFM567B27E
Part
Fault Code
Condition
False Indication
Location
Nr 2 Engine
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

NR 2 ENGINE FAULT CODE 75-10452, VBV POSITION SIGNALS DISAGREE. SHORT TERM FAULT DEFERRAL PER T/C 78273000. GROUNDED - YES. ACCOMPLISHED VBV SIGNALS DISAGREE FAULT ISOLATION SINGLE CHANNEL FAULT IAW FIM 75-32 TASK 803, ACCOMPLISHED EEC TEST IAW AMM 73-21-00 TEST PASSED NO FAULTS NOTED. NO RECENT FAULLTS CURRENTLY DISPLAYED. AIRCRAFT GOOD FOR SERVICE.