Commonwealth legislation

AD/BO 105/4 - Dual Flight Controls

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

1/10 complexity

What this does: This is a mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) for specific Eurocopter BO 105 helicopters.

Who it affects: Owners and operators of BO 105 helicopters with dual flight controls (serial numbers 739 and below).

What it requires: Before flying after 1 July 1986, operators must carry out specific repairs or inspections outlined in MBB Alert Bulletin No. 27 (a manufacturer safety notice).

Why it matters: The helicopter's collective controls (the lever that changes the pitch of the rotor blades to make the aircraft climb or descend) could become jammed or blocked, creating a serious flight safety risk. This directive ensures the defect is fixed before the aircraft returns to service.

JSON API Aviation / CASA instruments

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/BO 105/4 - Dual Flight Controls.

AD/BO 105/4 - Dual Flight Controls

meta-content-style-type: text/css meta-content-type: application/xhtml+xml; charset=utf-8 meta-generator: Aspose.Words for .NET 22.10.0

?xml version="1.0" encoding="utf-8" standalone="no"?>

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Eurocopter BO 105 Series Helicopters

AD/BO 105/4 Dual Flight Controls 7/86 DM

Applicability: All model BO 105 helicopters with dual controls up to and including S/No 739. Requirement: Action in accordance with MBB Alert Bulletin No. 27.

Compliance: Before further flight after 1 July 1986.

Background: The possibility exists of collective controls becoming blocked.

Source text

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