Commonwealth legislation

AD/BELL 206/25 - Tail Rotor Balance Check and Tail Rotor Gearbox Casing and Mounting Inspection

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What this does

This directive orders mandatory safety checks for specific Bell helicopters. If you own or operate a Model 206A or AB-206A helicopter (with serial numbers listed in Bell Service Bulletin 206A-15 or Agusta Service Bulletin BT206-38), you must have a qualified mechanic:

Check the balance of the tail rotor (the smaller rotor that stops the helicopter from spinning uncontrollably); and
Inspect the tail rotor gearbox casing and its mounting to the aircraft structure.

Who it affects

Owners and operators of the specific Bell and Agusta-Bell helicopter models listed above.

Why it matters

The tail rotor is essential for controlling the helicopter's direction. If the rotor is unbalanced or the gearbox mounting is cracked or loose, the tail rotor could fail in flight, causing the helicopter to spin and potentially crash.

Compliance

The check must be completed within 100 hours of flight time after 31 July 1970.

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Current sections

Direct links to the current provisions in AD/BELL 206/25 - Tail Rotor Balance Check and Tail Rotor Gearbox Casing and Mounting Inspection.

AD/BELL 206/25 - Tail Rotor Balance Check and Tail Rotor Gearbox Casing and Mounting Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters

AD/BELL 206/25 Tail Rotor Balance Check and Tail Rotor

Gearbox Casing and Mounting Inspection

7/70

Applicability: All model 206A and AB-206A with S/Nos. referenced in requirement documents. Document: Bell SB No. 206A-15, or Agusta SB No. BT206-38.

Compliance: Within 100 hours time in service after 31 July 1970. Background: AD/Agusta 206/17 equivalent.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.