Service difficulty report · Valve · Boeing 737890

Difficulty date
December 1, 2020
Submitted
December 10, 2020
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
49,612 hours, 14,758 cycles
Engine
Cfmint CFM567B27
Part
Valve
Part number
32911866
Part serial
GRTU2157
Condition
Leaking
Location
Nr 1 Engine
Part time
17,044 hours, 5,018 cycles
Stage of operation
IN
How discovered
V
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

CREW REPORTS ENGINE 1 IS LEAKING FUEL, PER B737-800 AMM TASK 71-71-00-200-801-F00 FOUND LEAK AT 15 DPM COMING FROM HPTACCV DRAIN. PERFORMED ENGINE RUN FOR 5 MINUTES AND LEAK STOPPED, AS PER AMM ITEM PLACED ON PLT FOR 25 FLIGHT CYCLES. GROUNDED-YES. REMOVED AND REPLACED NR 1 ENGINE HPTACC VALVE W/NEW, PER B737-800 AMM 75-21-01. ACCOMPLISHED NR 1 ENGINE HPTACC VALVE INSTALLATION TEST, PER AMM 71-00-00-800-811-F00. NO LEAKS, OPERATIONS CHECK GOOD.