SDR HEEA065455

Service difficulty report · Damper · Bell 407

Difficulty date: December 17, 1999
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N612PH
Make and model: Bell 407
Aircraft serial: 53199
System (JASC): 6220 · Main Rotor Head
Part: Damper
Part number: 407310100103
Condition: Corroded
Location: Main Rotor
Stage of operation: IN
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

REMOVED HEAD DUE TO GRIP RETIREMENT. AT INSPECTION OF ASSY FOUND CORROSION IN SHEAR BEARING BORE BEYOND LIMITS. REQUESTED DAMPERS TO BE SENT TO BELL FOR EVALUATION. SERIAL NUMBERS REMOVED ARE LK5540, LK5603, LK5654, AND LK5473. REPLACEMENT PART SERIAL NUMBERS ARE LK7355, LK7111, LK7255, AND LK7093.

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