AD/BELL 47/75 Amdt 2 - Control Tubes

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B04699 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Bell Helicopter Textron 47 (All Variants) Series Helicopters

 

AD/BELL 47/75

Amdt 2

Applicability: All models.


Control Tubes 10/86

 

Requirement: 1. Visually inspect the control tubes referenced in Bell SB 47-11-73-1 and Kawasaki- Bell S.B. KSB-Bell 334 for evidence of corrosion pits, particularly in the lower four (4) inches of each tube assembly; or

 

2.    Inspect the control tubes referenced in Bell SB 47-11-73-1 and Kawasaki-Bell S.B. KSB-Bell 334 for evidence of corrosion using a suitable radiographic technique; or

 

3.    Remove the lower end fittings from the control tubes and visually inspect the internal surface of the tube for evidence of corrosion.

 

Compliance: 1. Within 25 hours time in service after 31 December 1973 and thereafter at intervals not exceeding 50 hours time in service.

 

2 & 3. Within 25 hours time in service after 31 December 1973 and thereafter at intervals not exceeding 3 years.

 

Background: The manufacturer has received reports of failure of fore and aft control tubes caused by corrosion. This Directive has been amended to include Kawasaki-Bell Helicopters.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.