Service difficulty report · Main Rotor · Hughes 369D

Difficulty date
August 22, 2001
Submitted
September 17, 2001
Operation
General aviation
Make and model
Hughes 369D
Aircraft time
10,175 hours
Engine
Allsn 250C20B
Part
Main Rotor
Part number
369D21100523
Condition
Cracked
Location
Lwr Skin Root
Part time
3,340 hours, 66,802 cycles
Component
Main Rotor · Hughes · 369D21200503
Stage of operation
IN
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

(CAN) 1 1/2"- 2" CHORDWISE CRACKS IN LOWER ROOT DOUBLER ADJACENT TO OUTBOARD END OF ROOT END FITTING. TWO BLADES FROM SAME SET WITH SIMILAR CRACKS S/N'S 009999-K068,-K070. *TORQUE EVENTS CALCULATED BY TSNX20 (REF: BOEING SERVICE BULLETIN SB 369D195R3)