Commonwealth legislation

AD/M20/28 - Automatic Pilot Control Wheel Disengage Switch Circuit - Modification

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 is: An Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations.

What it does: Requires owners or operators of specific Mooney M20J aeroplanes to modify the automatic pilot (autopilot) control wheel disengage switch circuit.

Why it matters: This fixes a safety defect that could prevent the autopilot from disconnecting when the pilot tries to manually override it via the control wheel. Ensuring the pilot can immediately take manual control is critical for flight safety.

Who is affected: Only the owners of eight specific aircraft identified by serial numbers: 24-0063, 24-0068, 24-0077, 24-0080, 24-0084, 24-0088, 24-0091 and 24-0093.

What must be done: The modification must be performed exactly as described in Mooney Service Bulletin M20-199 (a technical instruction manual from the aircraft manufacturer).

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/M20/28 - Automatic Pilot Control Wheel Disengage Switch Circuit - Modification.

AD/M20/28 - Automatic Pilot Control Wheel Disengage Switch Circuit - Modification

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 Mooney M20 Series Aeroplanes

AD/M20/28 Automatic Pilot Control Wheel Disengage

Switch Circuit - Modification

7/77

Applicability: Model M20J with S/Nos. 24-0063, 24-0068, 24-0077, 24-0080 24-0084, 24-0088, 24-

0091 and 24-0093.

Document: Mooney SB M20-199. Compliance: Before 30 September 1977.

Source text

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