Service difficulty report · Duct · Boeing 75724APF

Difficulty date
November 11, 2025
Submitted
November 12, 2025
Operation
Air carrier
Aircraft
N402UP
Make and model
Boeing 75724APF
Aircraft serial
23724
Aircraft time
38,986 hours, 26,687 cycles
Part
Duct
Condition
Leaking
Location
Lt Bleed
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING LEFT ENGINE START, LEFT BLEED DUCT LEAK. ABORTED ENGINE START, RAN CHECKLIST SMOKE VISIBLE IN THE COCKPT AND ON THE GROUND. RESULTED IN BTB.

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