AD/CESSNA 310/51 Amdt 1 - Powerplant Fire Detection System - Installation - CANCELLED

What this is: This document cancels a previous safety rule (called an Airworthiness Directive) that required owners of Cessna 310 series aircraft to install engine fire-detection systems.

Who it affects: Owners and operators of Cessna 310 series aeroplanes in Australia.

What it does: The original rule required these specific fire detection systems to be installed by April 1983. This new document completely scraps that requirement—the rule is cancelled as of 24 September 2009.

Why it matters: If you own or operate one of these aircraft, you no longer need to comply with this particular installation requirement. The Civil Aviation Safety Authority (CASA) has decided this Australian-specific rule is no longer necessary, likely because the affected aircraft are now obsolete or the safety issue is addressed through other means.