Service difficulty report · Actuator · Boeing 737890

Difficulty date
August 7, 2021
Submitted
September 8, 2021
Operation
Air carrier
Aircraft
N538AS
Make and model
Boeing 737890
Aircraft serial
41188
Aircraft time
34,773 hours, 10,137 cycles
Engine
Cfmint CFM567B27
Part
Actuator
Part number
1211313010
Part serial
AAR6639
Condition
Leaking
Location
Nr 2 Vsv
Part time
16,797 hours, 4,892 cycles
Stage of operation
IN
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

REF LP 60221973 FOR #2 ENG FUEL LEAK @ L/H & R/H VSV & FUEL LEAK ON TBV DRAIN. GROUNDED - YES. PERFORMED IDLE LEAK CHECK FOUND NO EVIDENCE OF ACTIVE LEAKS AT ANY DRAIN LOCATION. FOUND DISCREPANCY ON DRAIN LINE FROM THE TBV. REMOVED AND REPLACED TRANSIENT BLEED VALVE REF B737-800 AMM 75-23-01-400-801-F00. LEAK AND OPS TEST GOOD. REMOVED AND REPLACED THE #2 ENG L/H AND R/H VSV ACTUATORS PER AMM 75-31-01 AND 75-31-01-790-801. OPS AND LEAK CHECK GOOD.