Commonwealth legislation

AD/CON/77 - Piston Pin Plug Wear

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

Requires inspection of specified Teledyne Continental Motors piston engines and cylinders for abnormal piston pin plug wear, carried out in accordance with TCM CSB No. CSB97-10 and completed within 10 hours time in service from 11 September 1997. Affects owners/operators of listed O‑470, IO‑470 and certain E‑series engines and cylinders (engines/cylinders released or installed before August 1996 are excluded). The measure aims to detect wear that can raise oil consumption and risk piston or engine failure.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/CON/77 - Piston Pin Plug Wear.

AD/CON/77 - Piston Pin Plug Wear

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
Teledyne Continental Motors Piston Engines

AD/CON/77 Piston Pin Plug Wear 10/97

Applicability: Teledyne Continental Motors (TCM) new and rebuilt model O-470 and IO-470 series engines with serial numbers as listed in Table 1 of TCM Critical Service Bulletin (CSB) No. CSB97-10; and

TCM model E-165, E-185, E-225, O-470 and IO-470 series engines, regardless of serial number, which have cylinder(s) with a part number and purchase date as listed in Table 2 of TCM CSB No. CSB97-10.

Note 1: Engines released prior to August 1996 and cylinders installed prior to August 1996 are not affected by the requirements of this directive.

Requirement: To prevent extreme side loading of the piston, and subsequent failure of the piston and engine, inspect applicable engines in accordance with TCM CSB No. CSB97-10.

Note 2: FAA Airworthiness Directive 97-15-01 refers.

Compliance: Within 10 hours time in service from 11 September 1997.

This airworthiness directive becomes effective on 11 September 1997.

Background: This directive has been issued to require the inspection of certain cylinders for evidence of abnormal piston pin plug wear. The requirement follows advice of a number of engines fitted with cylinders treated with a manganese phosphate coating have exhibited evidence of accelerated wear of the aluminium piston pin plugs. If not detected by regular oil analysis or inspection, piston pin plug wear may result in an increase in oil consumption and possible piston pin and engine failure.

Source text

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

1 AD/CON/77 - Piston Pin Plug Wear