Service difficulty report · Connector · Boeing 737990ER

Difficulty date
August 17, 2019
Submitted
September 30, 2019
Operation
Air carrier
Aircraft
N461AS
Make and model
Boeing 737990ER
Aircraft serial
36363
Aircraft time
21,338 hours, 6,911 cycles
Engine
Cfmint CFM567B27E
Part
Connector
Condition
Damaged
Location
Nr 1 Vsv Act
Part time
46,712 hours, 13,464 cycles
Stage of operation
IN
How discovered
9
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

WHILE PERFORMING TASK CARD # 78273000 FOUND FAULT 75-20391 VSV POSITION SIGNAL OUT OF RANGE ON NUMBER 1 ENG ( LONG TIME FAULT). GROUNDED - YES. PERFORMED EEC BITE PER B737-900 FIM 73-00 TASK 801 AND VERIFIED FAULT WAS STILL ACTIVE. PERFORMED FIM 75-31 TASK 803. FAULT MESSAGE FOR FADEC 3 EEC TAKES YOU TO FIM 75-34 TASK 819. PERFORMED FIM 75-34 TASK 819 AND FOUND AN OPEN WHEN PERFORMING CONTINUITY CHECK AT CONNECTOR DP1010 THROUGH VSV LVDT. REMOVED CONNECTOR DP1002 AT L/H VSV AND FOUND DAMAGED PINS ON THE VSV PER FIM 75-34 TASK 819. REMOVED AND REPLACED LH VSV ON #1 ENG IAW B737-900 AMM 75-31-01-400-801-F00.