Federal Register of Legislation - Australian Government

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AD/PHZL/87 - Propeller Thrust Bearings

Authoritative Version
AD/PHZL/87 Airworthiness Directives/Pt 107 — Equipment as made
Propeller Thrust Bearings
Administered by: Infrastructure and Transport
Exempt from sunsetting by the Legislative Instruments Act 2003 s 54(2) item 9
Registered 17 May 2007
Tabling HistoryDate
Tabled HR21-May-2007
Tabled Senate12-Jun-2007
Date of repeal 07 May 2009
Repealed by AD/PHZL/87 Amdt 1 - Propeller Thrust Bearings

 

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 39.001(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/87

Propeller Thrust Bearings

6/2007

 

Applicability:

Hartzell Propeller Inc. model HC-E4A-3( )/E10950( ) propellers.

The parentheses appearing in the propeller model number indicates the presence or absence of an additional letter(s) that varies the basic propeller model.  This AD still applies regardless of whether these letters are present or absent in the propeller model designation.

Note 1:  These propellers are installed on, but not limited to, Raytheon Beechcraft 1900D aeroplanes.

Requirement:

Inspect and rework the propeller blade retention radius and replace the propeller thrust bearing for each blade, in accordance with paragraphs 3.G.(1) through 3.G.(8) of the Accomplishment Instructions of Hartzell Propeller Inc. SB No. HC-SB-61-287, Revision 2 dated 24 October 2006 or later FAA approved revision.

Although Hartzell Propeller Inc. SB No. HC-SB-61-287, Revision 2, states in paragraph 3.G.(6) of the Accomplishment Instructions, to install new blade thrust bearings if required, this AD requires always installing new blade thrust bearings.

For the purpose of this AD, next propeller disassembly is defined as any maintenance requiring separating of the propeller hub halves.

Previous credit is allowed for inspections, rework, and replacements that were done using the Original or Revision 1 of Hartzell Propeller Inc. SB No. HC-SB-61-287, before the effective date of this AD.

Note 2:  FAA AD 2007-08-02 Amdt 39-15019 dated 3 April 2007 refers.

Compliance:

For propellers with 4,000 or more operating hours time-since-overhaul (TSO), within 100 operating hours after the effective date of this AD, thereafter at intervals not to exceed 3,000 additional operating hours time-in-service.

For propellers with 2,000 or more operating hours TSO, but fewer than 4,000 operating hours TSO,  at the next propeller disassembly, thereafter at intervals not to exceed 3,000 additional operating hours time-in-service.

 

This Airworthiness Directive becomes effective on 7 June 2007.

 

Background:

This AD results from reports of excessive propeller vibration and of damaged or broken propeller blade thrust bearings found during routine and investigative propeller disassembly.  The issuing of this AD is to prevent propeller blade separation, damage to the aeroplane, and possible loss of aeroplane control.


David Punshon
Delegate of the Civil Aviation Safety Authority

24 April 2007