Commonwealth legislation

AD/LYC/108 - Crankshaft Material Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

6/10 complexity

This Airworthiness Directive requires metallurgical sampling and inspection of crankshaft material for specified Textron Lycoming engines (certain TIO‑540 and LTIO‑540 engines ≥300 hp, and IO‑540 engines modified by listed STCs). Operators must have an authorised Textron Lycoming representative take samples per the manufacturer’s service bulletin, obtain written confirmation that no metallurgical anomalies were found before returning the engine to service, and retain that notification in the engine logbook. It affects owners/operators and their maintenance providers of the listed engines.

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Current sections

Direct links to the current provisions in AD/LYC/108 - Crankshaft Material Inspection.

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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Lycoming Piston Engines

AD/LYC/108 Crankshaft Material Inspection 12/2002

DM

Applicability: 1. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater; and

2. Textron Lycoming IO-540 series engines modified by a Supplemental Type Certificate (STC) listed in Table 1 of this directive, regardless of the rated horsepower

Note 1: Applicable IO-540 powered aircraft include the Ted Smith/Piper PA-60 601 and 601P models.

Note 2: FAA Airworthiness Directive 2002-19-03 Amdt 39-12883 refers.

Requirement: 1. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and listed by serial number in Table 2 of this directive:

A CAR 42ZC (6) authorised representative of Textron Lycoming to obtain a sample of the crankshaft material for the purpose of metallurgical evaluation in accordance with Textron Lycoming Mandatory Service Bulletin (MSB) 553; and
Following compliance with Requirement 1a of this Directive; applicable engines may only be returned to service following receipt of Textron Lycoming documented evidence that confirms the material sample was found not to exhibit any metallurgical anomalies; and

c. The Textron Lycoming notification of the result of the metallurgical evaluation is to be retained in the engine logbook as an engine record.

2. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and listed by serial number in Table 3 of this directive:

A sample of the crankshaft material is to be taken in accordance with Requirement 1 (a), (b) and (c) of this directive.

AD/LYC/108

Appendix A

Crankshaft Material Inspection

- Tables

12/2002

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Lycoming Piston Engines

AD/LYC/108 Crankshaft Material Inspection 12/2002

DM DM

DM

Applicability: 1. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater; and

2. Textron Lycoming IO-540 series engines modified by a Supplemental Type Certificate (STC) listed in Table 1 of this directive, regardless of the rated horsepower

Note 1: Applicable IO-540 powered aircraft include the Ted Smith/Piper PA-60 601 and 601P models.

Note 2: FAA Airworthiness Directive 2002-19-03 Amdt 39-12883 refers.

Requirement: 1. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and listed by serial number in Table 2 of this directive:

A CAR 42ZC (6) authorised representative of Textron Lycoming to obtain a sample of the crankshaft material for the purpose of metallurgical evaluation in accordance with Textron Lycoming Mandatory Service Bulletin (MSB) 553; and
Following compliance with Requirement 1a of this Directive; applicable engines may only be returned to service following receipt of Textron Lycoming documented evidence that confirms the material sample was found not to exhibit any metallurgical anomalies; and

c. The Textron Lycoming notification of the result of the metallurgical evaluation is to be retained in the engine logbook as an engine record.

2. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and listed by serial number in Table 3 of this directive:

A sample of the crankshaft material is to be taken in accordance with Requirement 1 (a), (b) and (c) of this directive.

Deep dive

Current sections

AIRWORTHINESS DIRECTIVE

View image in the official source

DM

DM

AD/LYC/108

AD/LYC/108

Source text

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

DM DM

DM

AD/LYC/108 AD/LYC/108

AD/LYC/108