Next maintenance event, not to exceed 50 hours. of Lycoming engines. SB 632B requires that all engines that might possibly contain these non-conforming bushings have all their cylinders removed within the next 10 hours. 632B (Supersedes Service Bulletin No. MODELS AFFECTED. Engines Mandatory Service Bulletin (MSB) No. DATE: August 4, 2017 Service Bulletin No. This SB requires an internal inspection within 10 flight hours of its date of issuance (July 17, 2017). SB 632A addresses a problem with small-end connecting rod bushings (part number LW-13923) that were used shipped by Lycoming to overhaul shops and mechanics … Lycoming's Mandatory Service Bulletin 632 If your engine was overhauled by Penn Yan Aero prior to November 2015, then Lycoming's Mandatory Service Bulletin 632 does not apply. 632B, dated 4 August 2017, and All Lycoming engines that were overhauled or repaired using any replacement part listed in Table 2 of Lycoming Engines MSB No. Lycoming has issued Mandatory Service Bulletin 632 that requires owners to check their engines for connecting rods that contain bushings that do not meet Lycoming Engine’s specifications within the next 10 hours of operation. Need to know the best way to do something? 342 G. 105 S. Hansell Street Maxwell AFB, AL 36112. Added a new NOTICE before the Magneto Overspeed Inspection section. Lycoming photo. All Lycoming engines listed in Table 1 of Lycoming Engines Mandatory Service Bulletin (MSB) No. This Service Bulletin is notification of required action for mandatory compliance with Hartzell Engine Technologies Service Bulletin SB-065 dated August 31, 2015, regarding Lycoming engine models (Table 1) with fuel pump part number 62D26030, 62D26032, 62D26034, 62D26035, 62D26036, or 62D26037 approved for use on Lycoming engines. Service Instructions describe modification, processes and other information pertinent to maintenance repair and overhaul of Textron Lycoming engines. DATE: August 4, 2017 Service Bulletin No. (4) and 11.B. 632A) Engineering Aspects are FAA Approved SUBJECT: Identification of Connecting Rods with Non-Conforming Small End Bushings MODELS AFFECTED: TIME OF COMPLIANCE: Within the next 10 hours of engine operation. 632. If your engine was overhauled by Penn Yan Aero after November 2015, please review the parts list supplied with your engine overhaul and determine if SL-13923A bushings were used. Lycoming Service Bulletin No. Also, listen to today’s episode, to get some good information about the new Service Bulletin on Lycoming connecting rod bushings – MSB 632B. MFB HA-6™ carburetors are found on various Lycoming engine models, possibly on engines made by other manufacturers, and on certificated and non-certificated aircraft of various types. 1 to Service Bulletin No. 2. Lycoming Engines Mandatory Service Bulletin (MSB) No. This inspection requires the removal of all engine cylinders. Cylinder and Head Assembly Serviceable Life, All Lycoming Engines with Parallel Valve Cylinder and Head Assemblies (Table 1) shipped from Lycoming Engines between 1-SEP-2013 and 30-APR-2015 (excludes O-235 series), During Cylinder and Head Assembly removal for condition or overhaul, If the Exhaust System is not replaced per this revision, after the initial Exhaust System Inspection, continue with subsequent repetitive Exhaust System Inspections per Table 2 in this Service Bulletin, Lycoming Engines TIO-540-AH1A installed in Gripps Aero/Mahindra Turbocharged GA8 Airvans, At owner's discretion, during next scheduled maintenance event, 10 hours of engine operation or sooner if experiencing reduced fuel flow, Next maintenance event not to exceed 25 hours or before further flight if fuel leak found during preflight inspection. 632B. Let the dust settle on this service bulletin, and then make a decision. The manufacturer, Lycoming, has issued Mandatory Service Bulletin 632B to identify and remove from service certain connecting rods with non-conforming small end bushings. Continued operation of a non-conforming fuel pump can cause fuel leakage out of the airframer’s vent line or into the engine crankcase. DA: 80 PA: 96 MOZ Rank: 100. Lycoming Engines is an Operating Division of Avco Corporation. Lycoming Engines is an Operating Division of Avco Corporation. All 4 and 6-cylinder Lycoming engines equipped with Slick 4300 or 6300 Series Impulse Coupled Magnetos. LW-14077 MODELS AFFECTED. All Lycoming engines listed in Table 1 of Lycoming Engines Mandatory Service Bulletin (MSB) No. 639 Inspection of Rocker Arm, Part Number LW-15014. 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