Service difficulty report · Bypass Valve · Boeing 7673BG

Difficulty date
September 11, 2025
Submitted
November 21, 2025
Operation
Air carrier
Aircraft
N566NC
Make and model
Boeing 7673BG
Aircraft serial
30566
Aircraft time
78,378 hours, 20,250 cycles
Engine
Pwa PW4060
Part
Bypass Valve
Condition
Leaking
Location
Nr 2 Engine
Stage of operation
IN
How discovered
V
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

NUMBER 2 ENGINE FUEL BY PASS VALVE LEAKING FUEL. PERFORMED LEAK CHECK OF NR 2 ENGINE FUEL BYPASS VALVE IAW AMM 71-00-00-795-003-N00. NO LEAKS NOTED, LEAK CHECKED GOOD. ENGINE IDLE AND MPA RUNS WERE PERFORMED AS PART OF LEAK CHECKED ATTACHMENT.

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