Commonwealth legislation

AD/AKRO/1 Amdt 1 - Airspeed Restriction

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This is a safety directive for owners and operators of Stephens Akro series aeroplanes (light aerobatic aircraft).

What it requires:

Install a warning placard (sticker) next to the airspeed gauge displaying: "VNE (never exceed) 139 knots IAS"
This limits the maximum speed to 139 knots (Indicated Airspeed)
Must be completed before flying the aircraft after 7 October 1982

Why it matters: The speed restriction addresses safety concerns regarding the aircraft's aileron mass balance and wing attachments. Flying faster than 139 knots could risk structural failure or loss of control.

The fix: This restriction is temporary. Owners can remove the speed limit by modifying the aircraft according to a scheme approved by the Secretary (aviation authority). This amendment specifically permits modifications to the aileron mass balance and wing attachments that restore the aircraft's original safe flight capabilities.

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AD/AKRO/1 Amdt 1 - Airspeed Restriction

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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 Stephens Akro Series Aeroplanes

AD/AKRO/1

Amdt 1

Applicability: All models.

Airspeed Restriction 9/85

Requirement: Limit VNE speed to 139 knots IAS by installing a placard adjacent to the airspeed indicator with the legend:

VNE (never exceed) 139 knots IAS.

This Requirement will lapse when the aircraft has been modified in accordance with a scheme approved by the Secretary.

Compliance: Before further flight after 7 October 1982.

Background: Amendment 1 allows for approved modifications to the aileron mass balance and to the wing attachments that will permit restoration of the original flight envelope.

Source text

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