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Major changes beyond the authority of the service bulletins require amendments to the type certificate. For example, increasing (or decreasing) an aircraft's flight performance, range and load carrying capacity by altering its systems, fuselage, wings or engines resulting in a new variant may require re-certification.
The FAA issues ADs by three different processes: [5] Standard AD process: Notice of Proposed Rulemaking (NPRM), followed by a Final Rule; Final Rule and Request for Comments; Emergency airworthiness directives – issued without time for comment. This is only used issued "when an unsafe condition exists that requires immediate action by an ...
An emergency airworthiness directive (EAD) is an airworthiness directive issued when unsafe conditions require immediate action by an aircraft owner or operator. An EAD is published by a responsible authority such as the FOCA, EASA or FAA related to airworthiness and maintenance of aircraft and aircraft parts.
An FAA official confirmed that the agency had approved the service bulletins and associated instructions. Boeing sent two bulletins to air carriers on Wednesday on the fixes. Boeing wins FAA OK ...
The contractors working on the Federal Aviation Administration's NOTAM system apparently deleted files by accident, leading to the delays and cancellations of thousands of US flights.
In response to the second accident, the FAA issued an Airworthiness Directive requiring more frequent inspections by all airlines operating Boeing 737 Classic aircraft. As of April 2024 [update] , Southwest Flight 2294 is a daily service from Honolulu to Hilo , operated by a Boeing 737 MAX 8 aircraft.
As of April 3, 2011, Boeing was developing a Service Bulletin for the inspection of similar aircraft. [16] On April 5, 2011, the FAA issued an emergency airworthiness directive (AD) requiring operators of 737 series 300, 400 and 500 aircraft to increase the frequency of inspections of lap joints on high flight cycle airframes. The AD requires ...
The National Transportation Safety Board (NTSB) criticized Hamilton Standard, which had maintained the propellers, for "inadequate and ineffective corporate inspection and repair techniques, training, documentation, and communication", and both Hamilton and the Federal Aviation Administration for "failure to require recurrent on-wing ultrasonic ...