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An airworthiness directive (commonly abbreviated as AD) is a notification to owners and operators of certified aircraft that a known safety deficiency with a particular model of aircraft, engine, avionics or other system exists and must be corrected.
The Piper Aerostar (formerly the Ted Smith Aerostar) is an American twin-engined propeller-driven executive or light transport aircraft, designed by Ted R. Smith. It was originally built by Ted Smith Aircraft Company, but the design was acquired in 1978 by the Piper Aircraft Corporation , which continued production of the aircraft as the PA-60 .
According to the Aircraft Owners and Pilots Association Air Safety Foundation, which published a Safety Highlight report on the Piper Tomahawk, the Piper Tomahawk has a one-third lower accident rate per flying hour than the comparable Cessna 150/152 series of two-place benchmark trainers. The Tomahawk has a higher rate of fatal spin accidents ...
The aircraft design is thus compromised. The regulators will now issue an airworthiness directive to the type certificate holder and to all owners globally. The directives normally consists of additional maintenance or design actions that are necessary to restore the type's airworthiness.
A standard airworthiness certificate ceases to be valid when the aircraft ceases to be registered. Change of ownership of an aircraft does not require re-issue or re-validation of that aircraft's standard airworthiness certificate. In contrast to a standard airworthiness certificate, an aircraft may be issued with a special airworthiness ...
c:"Import aircraft.") of this section is entitled to a standard airworthiness certificate if -- (1) He presents evidence to the Administrator that the aircraft conforms to a type design approved under a type certificate or a supplemental type certificate and to applicable Airworthiness Directives; (2) The aircraft (except an experimentally ...
The aircraft was equipped with a Northrop Grumman made ADIRS, which investigators sent to the manufacturer in the US for further testing. [3] [4] On 15 January 2009 the EASA issued an Emergency Airworthiness Directive [5] to address the above A330 and A340 Northrop-Grumman ADIRU problem of incorrectly responding to a defective inertial reference.
Piper Aircraft Company factory in Lock Haven, Pennsylvania during the 1930s, with the Piper Cub logo superimposed at the top Piper PA-18-150 Super Cub.Built 1958. Piper PA-28-161 Warrior II Piper PA-34-200T Seneca Piper PA-31 Navajo airframe used for crash testing by NASA after a 1972 flood inundated Piper's factory Early-production PA-31 Navajo Piper PA-32RT-300T Turbo Lance II Piper PA-44 ...