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.
Propellers – Variable Pitch - Hartzell
AD/PHZL/73 Discrepant “Y” Shank Propellers 8/2001
Applicability: All Hartzell “Y” shank propellers, ( )HC-( )( )Y( )-( ) as listed by serial number in Table 1. The subject propellers were overhauled by Brothers Aero Service Company, Inc (BASCO) in the USA from November 1996 to October 1998 inclusive.
Table 1 - Affected Hub Serial Numbers
121, 251, 715, 1111, 1387, 1661, 2383, 2479, 2883, 3059, 3343, 3479, 3717, 3890,
3990, 4690, and 5523 AM911
AN1309, AN2773, AN2826, AN2828, and AN3883
AU42, AU696, AU814, AU992, AU1226, AU1290, AU1416, AU2641, AU2643, AU2658, AU2699, AU2847, AU7186E, AU8364A, AU8418A and AU12997
BP344, BP715, BP1276, BP1772, BP2121, BP3811, BP3763, BP3978, BP5674, BP6126, BP6194, BP7141, BP7297, BP7513, BP8199, BP8708, and BP9586
CH6190 & CH19251
CJ52, CJ54, CJ419, and CJ649 DA1404 and DA1418
DG101
DJ4431, DJ4449, DJ9521A, DJ10407A, DJ11249A, DJ11880A, and DJ11881A DN3775
DV11 and DV12 FH307
P560
Requirement: If an affected propeller is installed and it has not been overhauled since 1 November 1998, replace it with a serviceable propeller of the same type, or overhaul it in accordance with manufacturer’s approved maintenance data, or inspect the propeller in accordance with FAA AD 2001-07-03, Required Actions.
Note: FAA AD 2001-07-03(Corrected) refers.
Propellers – Variable Pitch - Hartzell
AD/PHZL/73 (Continued)
Compliance: Within 10 flying hours after the effective date of this Airworthiness Directive.
This Airworthiness Directive becomes effective on 9 August 2001.
Background: This AD is prompted by advice from the FAA that a US repair organisation released a number of discrepant Hartzell “Y” shank propellers into service. The discrepancies identified by the FAA could lead to propeller failure and subsequent loss of an aircraft. The action prescribed in this AD will ensure no discrepant propellers remain in service on Australian registered aircraft.
Eugene Paul Holzapfel
Delegate of the Civil Aviation Safety Authority 2 July 2001
The above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001.
Overview
The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1988 (CAR 1998) addresses a safety concern with specific Hartzell "Y" shank propellers overhauled by Brothers Aero Service Company, Inc (BASCO) between November 1996 and October 1998. This AD was enacted on 9 August 2001 and published in the Commonwealth of Australia Gazette on 11 July 2001. The directive aims to rectify the unsafe condition identified by the Federal Aviation Administration (FAA) of the United States, which found that several propellers had discrepancies that could lead to failure and subsequent loss of an aircraft. The policy objective of this AD is to ensure that no such discrepant propellers remain in service on Australian registered aircraft, thereby maintaining the safety and airworthiness of aircraft within Australia.
Scope and Application
This Airworthiness Directive (AD) applies to all Hartzell “Y” shank propellers specified by serial number in Table 1 of the AD, which were overhauled by Brothers Aero Service Company, Inc (BASCO) in the USA between November 1996 and October 1998. The AD mandates that these propellers be either replaced with a serviceable propeller of the same type, overhauled in accordance with the manufacturer’s approved maintenance data, or inspected in line with FAA AD 2001-07-03, if they are installed and have not been overhauled since 1 November 1998. The directive necessitates compliance within 10 flying hours of the AD’s effective date of 9 August 2001. This requirement is issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998, and the AD is applicable across the Commonwealth of Australia, ensuring safety measures are uniformly enforced on Australian-registered aircraft.
Key Provisions
The Airworthiness Directive (AD) F2006B06230 (Legislative instrument) pertains to Hartzell “Y” shank propellers that were overhauled by Brothers Aero Service Company, Inc (BASCO) in the USA between November 1996 and October 1998. Section 1 of the directive lists the specific affected propellers by their serial numbers, which must be replaced, overhauled, or inspected according to the instructions provided. These serial numbers are detailed in Table 1, which includes a mix of alphanumeric codes representing different propeller models.
Under section 2, the AD imposes obligations on the holders of the affected propellers. If an affected propeller is installed and has not been overhauled since 1 November 1998, it must be replaced with a serviceable propeller of the same type, overhauled in accordance with the manufacturer’s approved maintenance data, or inspected in line with FAA AD 2001-07-03(Corrected). This requirement is mandatory and must be adhered to within 10 flying hours of the directive's effective date, which is 9 August 2001. Failure to comply with these obligations could lead to unsafe conditions and potential aircraft loss, as identified by the FAA.
Section 3 outlines the potential consequences for non-compliance with the AD. While specific penalties are not detailed in the directive, non-compliance with ADs generally results in significant civil or criminal consequences under Australian aviation law. The Civil Aviation Safety Authority (CASA) has the authority to enforce compliance, which may include fines, suspension or revocation of aircraft certificates, and potential criminal charges for severe non-compliance. The directive is designed to ensure that no discrepant propellers remain in service, thereby maintaining the safety standards required by Australian aviation regulations.