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.
Also: Trig TT31 Update, Barnstorming--GA Wimping Out, Gone West: MiG Designer Belyakov, Zenith's 10000 Plan! When the FAA opened the door for easier angle of attack (AoA) indicator>[...]
Young Pilots Take Aviation, Culture, And Life Lessons Back To Chinese And Other Asian Airlines TransPac Aviation Academy, which says it graduates some 400 students annually, this w>[...]
“Watchkeeper will provide real-time information for troops conducting operations on the ground, allowing them to understand better and thereby overcome threats they may face.>[...]
Number Of Airlines And Other Operators Of Q400 And Q400 Nextgen Aircraft In Africa Has Grown To 15 Bombardier Aerospace and RwandAir of Kigali, Rwanda today celebrated the delivery>[...]
Aero Linx: Aviation Consumer Protection The Office of the Assistant General Counsel for Aviation Enforcement and Proceedings, including its Aviation Consumer Protection Division, m>[...]