Service difficulty report · Control Valve · Boeing 7378H4

Difficulty date
April 29, 2026
Submitted
May 4, 2026
Operation
Air carrier
Aircraft
N8540V
Make and model
Boeing 7378H4
Aircraft serial
63598
Aircraft time
29,080 hours, 14,801 cycles
Part
Control Valve
Condition
Leaking
Location
Zone 400
Stage of operation
TX
How discovered
V
Nature of condition
K
Precautionary procedure
O

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

What was found

NR 1 ENGINE FUEL LEAK AFTER PUSHBACK. CONTINUE AFTER 5 MINUTES. REMOVED AND REPLACED NR 1 ENGINE HPTACC IAW AMM 75-21-01; PERFORMED IDLE TEST 3A AND ACTUATORS TEST. TEST PASSED AND NO LEAKS FOUND. REF MT# 727-PRD-01-03.

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