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The FAA completed an in-depth review of the CH601 XL and 650 and issued a report entitled Zodiac CH601 XL Airplane Special Review Team Report January 2010. The FAA concluded: [29] [30] FAA review of the in-flight failures did not indicate a single root cause, but instead implicated the potential combination of several design and operation aspects.
MARPA continued to inform the industry and the government about these issues and in 2008, the FAA released a Special Airworthiness Information Bulletin to remind the industry that PMA parts are FAA-approved in the United States, and therefore PMA parts are valid replacement parts that continue to enjoy the same Instructions for Continued ...
FAA Order 8130.34D, Airworthiness Certification of Unmanned Aircraft Systems, establishes procedures for issuing either special airworthiness certificates in the experimental category or special flight permits to unmanned aircraft systems (UAS), optionally piloted aircraft (OPA), and aircraft intended to be flown as either a UAS or an OPA.
Concurrent with the addition of UL94 to ASTM D7547, the FAA published Special Airworthiness Information Bulletin (SAIB) HQ-16-05, which states that "UL94 meets the operating limitations or aircraft and engines approved to operate with grade UL91 avgas," meaning that "Grade UL94 avgas that meets specification D7547 is acceptable to use on those ...
The FAA had issued previous Airworthiness Directives: AD 2005-12-03, AD 2006-11-14, and AD 2006-15-19 for problems with the main gearbox of that type. The FAA had also issued Special Airworthiness Information Bulletin (SAIB) number SW-09-19 Sikorsky S92A Main Gearbox Emergency Procedures dated 19 March 2009.
The FAA also uses advisory circulars to officially recognize "acceptable means, but not the only means," of accomplishing or showing compliance with airworthiness regulations. [3] [4] Advisory circulars may also contain explanations, clarifications, best practices, or other information of use to the aviation community. [2] [5]
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 ...
A type certificate (TC) is issued to signify the airworthiness of the approved design or "type" of an aircraft to be manufactured. The TC is issued by a regulatory authority, and once issued, the design cannot be changed unless at least part of the process for certification is repeated to cover the changes.