Commonwealth legislation

AD/ROTAX/19 - Oil Dipstick

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive requires operators of specified Rotax 912 and 914 piston engines to replace an existing oil dipstick with an updated dipstick per Bombardier Rotax service bulletin instructions. It applies to engines within the listed serial-number ranges and takes effect 27 November 2003.

Replacement must be carried out at the next oil change or before 1 January 2004. The AD cites slower-than-normal crankcase oil return that can lower the oil-tank level, admit air, damage valve mechanisms and risk engine stoppage, and mandates following the service bulletin procedures.

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Current sections

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AIRWORTHINESS DIRECTIVE

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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 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.

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Rotax Piston Engines

AD/ROTAX/19 Oil Dipstick 12/2003

Applicability: The following engines fitted with oil dipstick Part Number (P/N) 965150: Rotax 912 A series engines Serial Number (S/N) up to 4,410.606 inclusive; and 912 F-series engines S/N up to 4,412.858 inclusive; and

912 S-series engines S/N up to 4,922.971 inclusive; and 914 F-series engines S/N up to 4,420.394 inclusive.

Requirement: Replace oil dipstick P/N 956150 with P/N 956151 in accordance with Bombardier Rotax Service Bulletin (S/B) SB-912-040R1 or SB-914-026R1 as required.

Note: Austrian AD No 116 refers.

Compliance: At the next oil change or prior to 1 January 2004, whichever occurs first. This Airworthiness Directive becomes effective on 27 November 2003.

Background: A slower than normal return oil flow from the crankcase to the oil tank can be experienced under certain conditions. This may result in the oil tank level going below minimum levels. Low oil levels in the oil tank can allow air to enter the oil system, causing damage to the valve mechanism and possible engine stoppage.

Signature of Jim Coyne Delegate of the Civil Aviation Safety Authority

Jim Coyne

Delegate of the Civil Aviation Safety Authority 14 October 2003

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Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Rotax Piston Engines