Commonwealth legislation

AD/CT58/15 - Inspection/Replacement of Rotating Parts

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This Airworthiness Directive requires operators of aircraft fitted with General Electric CT58/T58 series turboshaft engines to inspect and, where necessary, replace specified rotating components by following FAA AD 97-19-17 procedures, except for certain engine cooling plates. Those cooling plates are singled out for replacement if their serial numbers appear in GE Service Bulletin 72-188 Rev 1. It matters because it creates mandatory maintenance deadlines, different hour limits depending on Repetitive Heavy Lift (RHL) use, and shifts inspection, replacement cost and scheduling obligations onto aircraft operators.

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AIRWORTHINESS DIRECTIVE

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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 39.1 (1) of CAR 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.

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General Electric Turbine Engines - CT58 Series

AD/CT 58/15 Inspection/Replacement of Ro

AD/CT 58/15 Inspection/Replacement of Rotating Parts 5/2002

Applicability: Models CT58-100-2, -110-1, 110-2, -140-1, -140-2, and T58-GE-3/-5/-8F/-10/-100

series turboshaft engines

Requirement: 1. Inspect/replace the various rotating components in accordance with FAA AD 97-19-17 with the exception of engine cooling plates:

Stage 1 front cooling plates, P/N: 37C300055P101;
Stage 2 front cooling plates, P/N: 3000T88P02; and
Stage 2 aft cooling plates, P/N: 30002T27P01.

2. For cooling plates listed in Requirement 1 above, and identified by serial number in GE Aircraft Engines CT58 Service Bulletin (SB) 72-188 (CEB-293), Revision 1, dated 15 July, 1997, replace with serviceable parts.

Note 1: FAA AD 97-21-08 refers to Requirement 2 of this Airworthiness Directive.

Note 2: GE Aircraft Engines Service Bulletins (SB) (CT58): A72-162 (CEB- 258), Revision 8, dated 16 June, 1997; 72-181 (CEB-284) Revision 2, dated 15

July1997, and 72-188 (CEB-293) Revision 1, dated 15 July, 1997 refer.

Compliance: For Requirement 1: Unless already accomplished, at the compliance periods required by FAA AD 97-19-17 from the effective date of this Airworthiness Directive.

For Requirement 2: Unless already accomplished, at the next exposure, or next light overhaul, whichever occurs first, but not to exceed 1,000 hours Time in Service (TIS) for engines installed on aircraft that have engaged in Repetitive Heavy Lift (RHL) operations, or 2,000 hours TIS for engines installed on aircraft that have never engaged in RHL operations, in accordance with CT58 Service Bulletin (SB) 72-188 (CEB-293) Revision 1, dated 15 July, 1997 from the effective date of this Airworthiness Directive.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

General Electric Turbine Engines - CT58 Series

AD/CT 58/15 Inspection/Replacement of Ro AD/CT 58/15 Inspection/Replacement of Rotating Parts 5/2002

AD/CT 58/15 Inspection/Replacement of Rotating Parts 5/2002

Applicability: Models CT58-100-2, -110-1, 110-2, -140-1, -140-2, and T58-GE-3/-5/-8F/-10/-100

series turboshaft engines

Requirement: 1. Inspect/replace the various rotating components in accordance with FAA AD 97-19-17 with the exception of engine cooling plates:

Stage 1 front cooling plates, P/N: 37C300055P101;
Stage 2 front cooling plates, P/N: 3000T88P02; and
Stage 2 aft cooling plates, P/N: 30002T27P01.

Note 1: FAA AD 97-21-08 refers to Requirement 2 of this Airworthiness Directive.

Note 2: GE Aircraft Engines Service Bulletins (SB) (CT58): A72-162 (CEB- 258), Revision 8, dated 16 June, 1997; 72-181 (CEB-284) Revision 2, dated 15

July1997, and 72-188 (CEB-293) Revision 1, dated 15 July, 1997 refer.

Compliance: For Requirement 1: Unless already accomplished, at the compliance periods required by FAA AD 97-19-17 from the effective date of this Airworthiness Directive.