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SDR ASAA2020040332600

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Service difficulty report · Warning System · Boeing 737990ER

FAA SDR system

Difficulty date
March 30, 2020
Submitted
April 6, 2020
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
16,365 hours, 5,183 cycles
System (JASC)
7320 · Fuel Controlling System
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.

What was found

WHILE PERFORMING TASKCARD 78273000 FOUND MSG #2 ENG NBR 75-30452 VBV POSITION SIGNAL DISAGREE. REQUIRES PLT DEFERRAL PER TASK CARD 78273000 OR DEFECT CORRECTED. GROUNDED - YES. PERFORMED B737-900 FIM 75-32 TASK 803 FOR FAULT CODE 75-30452 VBV POSITION SIGNALS DISAGREE NO FAULTS FOUND. PERFORMED EEC BITE PROCEDURE PER FIM 73-00 TASK 801 NO FAULTS FOUND. PERFORMED GOOD ACTUATORS TEST 12 PER B737-900 AMM 71-00-00-700-807. NO FAULTS FOUND. PERFORMED EEC TEST WITH NO FAULTS FOUND PER AMM 73-21-00-700-804. THIS CLEARS THIS PLT.