Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
October 30, 2020
Submitted
November 11, 2020
Operation
Air carrier
Aircraft
N461AS
Make and model
Boeing 737990ER
Aircraft serial
36363
Aircraft time
25,167 hours, 8,028 cycles
Engine
Cfmint CFM567B27E
Part
Actuator
Part number
1211313010
Part serial
AA801
Condition
Leaking
Location
Nr 2 Vsv Act
Part time
14,025 hours, 4,377 cycles
Stage of operation
NR
How discovered
O
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FUEL LEAK FROM NR 2 ENGINE. GROUNDED-YES. REF B737-900 AMM 71-71-00-200-801-F00 RAN NR 2 ENGINE FOUND RIGHT VSV ACTUATOR LEAKING OUT DRAIN MAST AT 4DPM. PLACED ON PLT DEFERRAL FOR 25 FLIGHT CYCLES. REMOVED AND REPLACED NR 2 ENGINE RT VSV ACTUATOR, IAW AMM 75-31-01-000-802-F00/AMM 75-31-01-400-802-F00. ACCOMPLISHED TESTS ON POWERPLANT TEST, REF TABLE TEST 12 AND TEST 3A. TEST 3A IDLE LEAK CHECK IS GOOD. ACTUATORS TEST, TEST 12 OPERATIONS CHECK GOOD.