SDR 2562

Service difficulty report · Blade · Skrsky S76B

Difficulty date
April 23, 2008
Submitted
May 8, 2008
Operation
Air carrier
Aircraft
N19HF
Make and model
Skrsky S76B
Aircraft serial
760315
Aircraft time
7,606 hours, 17,125 cycles
Engine
Pwa PT6B36
Part
Blade
Part number
7615009100051A
Part serial
A08601410
Condition
Cracked
Location
Main Rotor
Part time
7,575 hours
Stage of operation
IN
How discovered
D
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

DURING INDUCTION, INSPECTION INTO A ROTOR BLADE REPAIR FACILITY, MAIN ROTOR BLADE SPAR WAS FOUND CRACKED (INTERNAL ROOT END). CRACK ORIGINATES FROM LEADING EDGE, OB LOWER ATTACHMENT BOLT HOLE. PHENOLIC BLOCK WAS REMOVED AND DYE PENETRANT INSPECTION WAS PERFORMED TO CONFIRM PRESENCE OF CRACK.