AD/PA-28/41 - Rapid Throttle Movement - Warning Placard - CANCELLED

What this is: A notice cancelling an old aviation safety rule for Piper PA-28 aircraft (light, single-engine planes commonly used for training and private flying).

What the old rule required: The original directive (from the 1970s) required owners to install a placard (a warning sticker) in the cockpit telling pilots not to open the throttle too rapidly. Rapid throttle movement could cause engine issues in these aircraft.

Why it's being cancelled: Compliance was mandatory back in 1973—over 35 years ago. Since every affected aircraft has long since had the placard installed, the safety risk no longer exists. The rule is essentially housekeeping—removing a redundant requirement from the books.

Who issued it: The Civil Aviation Safety Authority (CASA), which regulates Australian aviation safety.

Effect: Aircraft operators no longer need to reference or comply with this specific directive, though any placards already installed can remain.