AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/PHZL/79 and issues the following 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.
Propellers - Variable Pitch - Hartzell
AD/PHZL/79
Amdt 1
Propeller Vibration Placard 8/2003
Applicability: Hartzell ( )HC-C2YK-( )( )( )/( )( )7666A-( ) propellers installed on undampered 200 horsepower Lycoming IO-360 engines.
Note 1: These engines can be fitted to but are not limited to Mooney M20E and M20F, Piper PA-28R-200, and Pitts S-1T and S-2A aeroplanes.
Note 2: Engine models of this series incorporate no crankshaft dampers unless the third section of the model designation exhibits a numerical digit in its fourth position,
i.e. IO-360-A1B6. The digit "6" in the fourth position, indicates the incorporation of one 6.3 order and one 8th order counterweights.
Requirement: For Normal 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”
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.
3. Include a copy of this Directive with the aeroplane flight manual, where there is an aeroplane flight manual fitted.
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
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.