Airworthiness Directive · Amendment 39-9437 · McCauley Accessory Division, The Cessna Aircraft Company, Model C35, C72, C74, C75, C80, C86, C87, C92, and C93 Series Propellers
McCauley Accessory Division, The Cessna Aircraft Company, Model C35, C72, C74, C75, C80, C86, C87, C92, and C93 Series Propellers
McCauley Accessory Division, The Cessna Aircraft Company, Model C35, C72, C74, C75, C80, C86, C87, C92, and C93 series propellers, incorporating the following Hub Models: D3AF32C35-( ) 3AF32C72-( ) 3AF34C74-( ) 3AF32C75-( ) D3AF32C80-( ) 3AF34C86-( ) 3AF32C87-( ) D3AF32C87-( ) 3AF34C92-( ) 3AF32C93-( ) The parentheses used in the above list indicate the presence or absence of an additional letter(s) which vary the basic propeller hub model designation. These letter(s) define minor changes that do not affect interchangeability or eligibility, and therefore, this airworthiness directive (AD) still applies regardless of whether these letters are present or absent on the propeller hub model designation. These propellers are installed on but not limited to the following aircraft: Beech 58, 58A, 95-C55, -C55A, -D55, -D55A, -E55, -E55A. British Aerospace B-206 Series 2. Cessna 310K, 310L, 310N, 310P, 310Q, 310R, T310P, T310Q, T310R, 320D, 320E, 320F, 335, 340, 340A, 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B. Colemill Executive 600 (Conversion of Cessna 310I, 310J, 310K, 310L, 310N). RAM Conversion of Cessna 340.
This amendment adopts a new airworthiness directive (AD) that is applicable to McCauley Accessory Division, The Cessna Aircraft Company, Model C35, C72, C74, C75, C80, C86, C87, C92, and C93 series propellers. This action requires initial and repetitive visual and dye penetrant inspections of the propeller hub for cracks. This action also requires a one-time eddy current inspection for cracks in the threaded areas of the propeller hub followed by modification of the hub to contain oil with red dye as a terminating action to the repetitive inspections. This amendment is prompted by reports of cracked propeller hubs. The actions specified in this AD are intended to prevent propeller blade separation due to a cracked propeller hub, which could result in separation of the engine from the aircraft and subsequent loss of aircraft control.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Propellers
