AD/BELL 205/17 - Hydraulic Fluid Temperature Indicators - Installation - CANCELLED

This is an Airworthiness Directive (AD) — a safety rule issued by the aviation regulator — that cancels a previous requirement for Bell 205 helicopters.

What it does: It formally cancels an earlier rule (AD/BELL 205/17) that required owners to install hydraulic fluid temperature indicators on dual hydraulic systems. As of 19 November 2009, helicopter owners no longer need to comply with that old rule.

Who it affects: Owners and operators of Bell Helicopter Textron 205 series helicopters that have dual hydraulic systems.

Why it matters: It removes a compliance burden. The original rule (from 1974) required a specific modification to be done within 50 hours of flight time. This cancellation means that modification is no longer considered necessary for safety, saving owners time and money.