SDR ALGA2012043001

Service difficulty report · Mast · Bell 206L4

Difficulty date: April 30, 2012
Submitted: May 1, 2012
Operation: Air carrier
Aircraft: N276AL
Make and model: Bell 206L4
Aircraft serial: 52312
Aircraft time: 9,185 hours
System (JASC): 6230 · Main Rotor Mast/Swashplate
Part: Mast
Part number: 206040014107
Part serial: 51374
Condition: Damaged
Location: Main Rotor
Part time: 14,187 hours
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

DURING COURSE OF 1500 HR INSPECTION, FOUND MAST POLE (206-040-535-109, SN N-767) CORRODED ON SPLINES. MAST NUT (206-040-078-005) CORRODED BEYOND LIMITS. LOCKPLATE (206-040-113-105) WORN BEYOND LIMITS. REPLACED MAST POLE, NUT AND LOCKPLATE.

More about the Bell 206L-4