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GE Aviation CT7 engine type variants 5A2, 7A1, 9B, 9C, and 9C3

Issue number: AO-2017-032-SI-01
Who it affects: Those responsible for the operation and maintenance of SAAB 340 and EADS CASA CN-235 aircraft fitted with the GE Aviation CT7 engine type variants 5A2, 7A1, 9B, 9C, and 9C3
Issue owner: Operators and maintainers of SAAB 340 and EADS CASA CN-235 aircraft fitted with the GE Aviation CT7 engine type variants 5A2, 7A1, 9B, 9C, and 9C3
Operation affected: Aviation: Air transport
Background: Investigation Report AO-2017-032
Date: 13 April 2017

Safety issue description

The ATSB advises that those responsible for the operation and maintenance of SAAB 340 and EADS CASA CN-235 aircraft fitted with the GE Aviation CT7 engine type variants 5A2, 7A1, 9B, 9C, and 9C3 should note the facts presented in this preliminary report with a view to addressing any risks to their own operation.

Safety Advisory Notice

Action organisation: GE Aviation
Action number: AO-2017-032-SAN-001
Date: 13 April 2017
Action status: Released

The ATSB advises that those responsible for the operation and maintenance of SAAB 340 and EADS CASA CN-235 aircraft fitted with the GE Aviation CT7 engine type variants 5A2, 7A1, 9B, 9C, and 9C3 should note the facts presented in this preliminary report with a view to addressing any risks to their own operation.

Proactive Action

Action organisation: GE Aviation
Action number: SA-01
Date: 13 April 2017
Action status: Monitor

GE Aviation is actively involved in supporting the Australian Transport Safety Bureau in this investigation. The propeller flange and all required hardware has been transported to GE Aviation laboratories in Cincinnati for further metallurgical analysis. GE Aviation is inspecting additional PGBs from the fleet and recommends that all operators follow existing maintenance and inspection procedures. As the investigation progresses GE Aviation will release additional maintenance and inspection recommendations if they become necessary.

   
Current issue status: Safety action pending
 
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Last update 27 June 2017