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.
Bell OH-58A (206A-1) Series Helicopters

AD/OH-58/1

State of Design Airworthiness Directives
9/2008
 
Applicability:
Model OH-58A (Bell 206A-1) series helicopters; including all certificated versions.

Requirement:
1.    Determine the applicability of the Federal Aviation Administration (FAA) Airworthiness Directives (AD) listed in Table 1.

 
2.    If it is determined that an FAA AD listed in Table 1 is applicable and has not been previously accomplished, perform the actions required by that AD.

 
Table 1

 
AD Number
Effective Date
Title

2005-21-03
21 November 2005
Tail Rotor Blade Root Doubler

2003-13-14
12 August 2003
Chip Detector

90-21-03
14 August 1991
Tail Rotor Blade Assembly

`
81-18-01 R1
15 January 2002
Trunnion

 
78-11-02 R1
15 December 1988
Rotor Blade Straps

 
76-15-03
29 July 1976
Main Rotor Blade Tension-Torsion Strap

 
76-04-09
30 March 1976
Main Rotor Hub Yokes

 
75-18-07
19 September 1975
Rotor Blade Pillow Block Assemblies

 
75-06-03
20 October 1975
Pitch Link Assembly

 
74-24-01
15 November 1974
Main Rotor Blade Grips

 
73-19-08
15 September 1973
Strap Fittings and Pins

 
72-19-01
15 September 1972
Main Rotor Retention Straps

 
71-08-03
18 November 1971
Particle Separation Kit

 
 
Compliance:
For Requirements 1 and 2 - Within 30 days after the effective date of this Directive or prior to the issue of a certificate of airworthiness, whichever occurs later.

 
This Airworthiness Directive becomes effective on 28 August 2008.

Background:
The FAA ADs listed in Table 1 of this Directive is the current list of FAA ADs applicable to the Model OH-58A (206A-1) helicopter and require certain actions for which the compliance times may or may not have passed.  CASA has determined that these ADs may be applicable to Australian registered aircraft.  This Directive is issued to ensure all State of Design ADs are complied with.

 
CASA appreciates that, due to date of aircraft manufacture or aircraft configuration and modification status, not all the ADs listed in Table 1 will be applicable.

David Villiers
Delegate of the Civil Aviation Safety Authority
7 July 2008