For Utility and Aerobatic Category aerop For Utility and Aerobatic Category aeroplanes:

For Utility and Aerobatic Category aeroplanes:

Unless previously accomplished remove any vibration placard that does not have the following statement and replace with one that does.

“Avoid continuous operation Between 2000 and 2350 rpm.

Above 2600 rpm in aerobatic flight”.

2. Unless previously accomplished re-mark the tachometer face or bezel with a red arc for the restricted engine speed range, between 2000 and 2350 rpm, and

between 2600 and 2700 rpm (red line).

Propellers - Variable Pitch - Hartzell Propellers - Variable Pitch - Hartzell

Propellers - Variable Pitch - Hartzell

AD/PHZL/79 Amdt 1 (continued)

3. Include a copy of this Directive with the aeroplane flight manual, where there is an aeroplane flight manual fitted.

Note 3: FAA AD 2002-09-08 Amdt 39-12741 refers.

Compliance: Within 100 flight hours from the effective date of this directive.

This Amendment becomes effective on 7 August 2003.

Background: This amendment corrects errors relating to the identification of undampered engines.

This Directive requires placards to be fitted to limit operation of the propeller at certain engine speeds. This will prevent failure of the propeller blade due to vibration. Engine speed limitations were previously published in amendments to the Australian Civil MkI an MkII Flight Manuals.

The original issue of this Directive became effective on 10 July 2003.

Jim Coyne

Delegate of the Civil Aviation Safety Authority 27 June 2003

The above AD is notified in the Commonwealth of Australia Gazette on 16 July 2003.