Service difficulty report · Skin · Bell 407

Difficulty date
March 3, 2026
Submitted
March 19, 2026
Operation
Air carrier
Aircraft
N401PH
Make and model
Bell 407
Aircraft serial
53615
Aircraft time
6,006 hours, 21,801 cycles
Part
Skin
Part number
407030401113
Condition
Cracked
Location
Zone 200
Part time
6,006 hours, 21,801 cycles
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

THE MECHANIC WAS COMPLYING WITH THE ZONE 3 TRANSMISSION INSPECTION WHEN HE FOUND A CRACK. THE CRACK WAS EMANATING FROM THE FORWARD RIGHT HAND PYLON BEAM ATTACHMENT POINT. IT WAS FOUND BECAUSE OF BLACK OIL AROUND THE AREA. HE CLEANED THE AREA AND COMPLETED A DYE PENETRANT INSPECTION TO VERIFY THE CRACK. THE CRACK LENGTH IS1.55", LOCATED .7" FWD AND OUTBOARD OF FWD OUTBOARD PYLON FASTENER

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