AD/Con/88 Kelly Aerospace Turbochargers (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Teledyne Continental Motors Piston Engines

AD/CON/88 Kelly Aerospace Turbochargers 11/2007 TX

Applicability:

Teledyne Continental Motors (TCM) models TSIO-520-BE, TSIO- 550-A, TSIO-550-B, TSIO-550-C, TSIO-550-E, and TSIO-550-G reciprocating engines with a Kelly Aerospace Power Systems turbocharger, TCM part number (P/N) 646677, with certain serial numbers (SNs), installed on or after 20 March 2007.

Note 1:  These engines are installed on, but not limited to, Adam Aircraft A500, Columbia Aircraft Manufacturing LC41-550FG, Mooney Aeroplane Company M20TN (Acclaim), and Piper Aircraft Incorporated PA-46-310P (Malibu) aeroplanes.

TCM IO-550-N reciprocating engines modified to Engine Technologies Incorporated supplemental type certificate (STC) SE10589SC to install turbocharger, P/N 466304-0003, with certain SNs, installed on or after 20 March 2007.

Note 2:  These engines are installed on, but not limited to, Cirrus Design Corporation Aircraft Model SR22 modified to Engine Technologies Incorporated STC SA10588SC.

Use Kelly Aerospace Power Systems Service Bulletins No. 026, Revision B, dated 27 July 2007, and No. 027, dated 25 July 2007, to determine if there is an affected turbocharger installed.

For any turbocharger that was installed before 20 March 2007, no further action is required.

Requirement:

1.    For Engines Modified to Engine Technologies Incorporated STC SE10589SC, replace the turbocharger.

2.    For TCM Engines with Turbocharger TCM P/N 646677, replace the turbocharger.

Note 3:  Teledyne Continental Aircraft Engine Mandatory Service Bulletin (MSB) MSB07-4, dated 30 July 2007, contains additional information on replacing turbochargers on TCM engines and Cirrus Service Advisory SA 07-14 R1, dated 24 July 2007, contains additional information on replacing turbochargers on Cirrus Design Corporation Aircraft Model SR22 modified to Engine Technologies Incorporated STC SA10588SC.

Note 4:  FAA AD 2007-16-10 Amdt 39-15149 dated 1 August 2007 refers.

Compliance:

1.    Before further flight, for engines modified to Engine Technologies Incorporated STC SE10589SC on or after March 20, 2007, with a turbocharger that has a SN listed in Kelly Aerospace Service Bulletin (SB) No. 026, Revision B, dated 27 July 2007.

2.    Before further flight, for engines with a Kelly Aerospace Power Systems turbocharger, TCM P/N 646677 installed on or after 20 March 2007, with a turbocharger SN listed in Kelly Aerospace SB No. 027.

This Airworthiness Directive becomes effective on 30 August 2007.

Background:

This AD results from four incidents of the turbine rotor separating from the shaft of the turbocharger.  The actions detailed in this AD are to prevent the turbine rotor from separating from the shaft of the turbocharger due to a machining defect in the turbocharger compressor.  This condition could result in full engine power loss, loss of engine lubricant, or smoke in the aeroplane cabin.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority

27 August 2007