Recommendation R20070019

Recommendation issued to: Cessna Aircraft Company

Recommendation details
Output No: R20070019
Date issued: 09 October 2007
Safety action status: Closed - No Action
Background: Why this Recommendation was developed

Output text

Safety Recommendation

The Australian Transport Safety Bureau recommends that Cessna Aircraft Company, revise its procedures in the Cessna 208 aircraft maintenance manual to include the starter-generator manufacturer's recommended brush inspection requirements.

Initial response
Date issued:
Response from: Cessna response
Response text:

Cessna Aircraft Company responded to this proposed safety recommendation (draft recommendation G) in the ATSB draft report by stating:

Cessna has discussed this recommendation with an APC repair facility. Reservations have been voiced concerning the customers checking of brushes, as they might chip the brushes, or put them back incorrectly. If APC elects to change the current maintenance procedures regarding the inspection or overhaul of their starter-generators, Cessna will pass the information on to our customers and consider changing the aircraft maintenance manual, if deemed necessary.

ATSB comment:

The ATSB does not accept that Cessna's response to draft recommendation G is adequate. The ATSB believes that Cessna should incorporate the starter-generator manufacturer's inspection requirement, APC Service Letter 132, as a minimum inspection requirement in the Cessna 208 maintenance manual. Service letter 132 is a brush life calculation check which should be carried out at 300 hours after a starter-generator is installed. As such, the ATSB now formally issues the safety recommendation as R20070019.

Last update 05 April 2012