Service Letter: 3000/3450 Rotary Actuator Shaft Key Retainer

Serial Letter Number: 274

Applicable Aircraft: Cessna 180, 182, 185, 206, Maule M-6-235, M-7-260, M-7-260C, MT-7-260, M-7-235, M-7-235B, M-7-235C, MT-7-235, M-7-420A, M-7-420AC, 3000A, 3450A

Applicable Serial Numbers: N/A