Service difficulty report · Valve · Boeing 737890

Difficulty date
May 16, 2020
Submitted
June 23, 2020
Operation
Air carrier
Aircraft
N587AS
Make and model
Boeing 737890
Aircraft serial
35684
Aircraft time
47,576 hours, 13,817 cycles
Engine
Cfmint CFM567B27B3
Part
Valve
Part number
32911866
Part serial
GRTV7998
Condition
Leaking
Location
Nr 1 Engine
Part time
35,403 hours, 10,410 cycles
Stage of operation
IN
How discovered
9
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

NR 1 ENGINE HAS A DRAIN LEAKING FUEL. FOUND HPTACC VALVE DRAIN AT 4 DROPS PER MINUTE. ALLOWABLE LIMITS LESS THAN 90 DPM. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENG HPTACC VALVE IAW AMM 75-21-01-000-801-F00, & AMM 75-21-01-400-801-F00. LEAK CHECKED C/W NO LEAKS NOTED AND ACTUATOR TEST C/W -OPS NORMAL.