Tue, Feb 12, 2013
Excludes Engines With FADEC Technology
The FAA has issued a Special Airworthiness Information Bulletin (SAIB) for airplanes equipped with Continental Motors, Inc. (CMI), continuous flow, fuel injected engines. The airworthiness concern is related to certain throttle and mixture control levers. Affected engines include all IO-240, IO-360, LTSIO-360, TSIO-360, IO-346, IO-470, GIO-470, TSIO-470, IO-520, GTSIO-520, LIO-520, TSIO-520, IO-550, GIO-550, TSIO-550, and TSIOL-550 continuous flow, fuel injected engines(except FADEC-equipped engines).
The FAA has received reports from the field of throttle and mixture control levers loosening during service, resulting in either a partial or complete loss of throttle and/ or mixture control. The subject throttle and mixture control levers were manufactured from a bronze material. Splines on the mating control shaft are pressed into the bronze control levers during installation by torquing a lock nut. Reinstalling bronze material levers can cause premature wear on the lever splines thereby reducing the amount of engagement with the control shaft. Additional wear during service can lead to complete disengagement of the splines and result in loss of throttle and/ or mixture control.
Bronze material is no longer used to manufacture these levers. CMI now manufactures these levers from stainless steel. The stainless steel levers have machined splines that are more durable to prevent premature wear. Additionally, CMI has issued CMI Critical Service Bulletin CSB08-3B, Revision B, dated February 1, 2013, which requires replacement of all bronze material throttle and mixture levers with the new stainless steel levers at the next 100 hour, or annual, inspection, or when the lever is removed for any reason, whichever occurs first.
The FAA recommends removal of the bronze material throttle and mixture control levers from service in accordance with the guidance in CMI Critical Service Bulletin CSB08-3B.
More News
Hold Procedure A predetermined maneuver which keeps aircraft within a specified airspace while awaiting further clearance from air traffic control. Also used during ground operatio>[...]
Altitude Readout An aircraft’s altitude, transmitted via the Mode C transponder feature, that is visually displayed in 100-foot increments on a radar scope having readout cap>[...]
Aero Linx: European Hang Gliding and Paragliding Union (EHPU) The general aim of the EHPU is to promote and protect hang gliding and paragliding in Europe. In order to achieve this>[...]
Also: Skydio Chief, Uncle Sam Sues, Dash 7 magniX, OR UAS Accelerator US Secretary of the Air Force Frank Kendall was given a turn around the patch in the 'X-62A Variable In-flight>[...]
"The need for innovation at speed and scale is greater than ever. The X-62A VISTA is a crucial platform in our efforts to develop, test and integrate AI, as well as to establish AI>[...]