Service difficulty report · Blade · Bell 407

Difficulty date
January 12, 2011
Submitted
January 13, 2011
Operation
Air carrier
Aircraft
N407UH
Make and model
Bell 407
Aircraft serial
53345
Aircraft time
5,971 hours, 21,465 cycles
Engine
Allsn 250C47B
Engine time
5,635 hours, 14,573 cycles
Part
Blade
Part number
407015001137
Part serial
A3633
Condition
Cracked
Location
Main Rotor
Part time
1,679 hours
Stage of operation
NR
How discovered
9
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 ROUTINE AIRWORTHINESS CHECK FOUND 2 CRACKS IN THE L/E OF ONE OF THE MAIN ROTOR BLADES.

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