The Aviation DataBase: Service Information: Roto-Master
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DataBases updated: Jul 16th, 2025
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Service Letters
NameRevisionLangSubjectDate
en Inspection of Carb Box Check Valve Hinge Tabs11/7/1963
en Inspection of Turbocharger Turbine Scroll10/26/1964
en Inspection of Air Box Assembly Check Valve Hinge Tabs1/6/1965
en Inspection of Compressor Discharge Box Check Valve Hinge Tabs4/16/1965
en Ground Operation of Fuel Boost Pump7/1/1965
en Inspection Recommendations Following Overboost of Rajay Turbocharged Lycoming Engines7/14/1965
en Engine Mount Protection7/21/1965
en Inspection of Alternate Air Inlet Valve Bracket10/1/1965
en Alternate Source for Fuel Nozzle Bleed Air12/14/1965
en Relocation of T/C Oil Warning Light Power Wire5/23/1967
en Inspection of Turbo Oil Supply Hose6/12/1967
en Intake Manifold Plugs12/13/1967
en Engine Mount Protection4/22/1968
en Engine Driven Fuel Pump Vent Fitting8/5/1968
en Possible Disengagement of the Internal Ring Retaining Pin from the Pump Housing2/23/1970
en Reduced Service Life from Rajay Turbocharged Engines7/7/1970
en Adequacy of the BJ 4120 Waste Gate Return Spring7/7/1970
en Modification of Old Style Oxygen Outlet Assemblies that will Not Accept the New Rajay Quick-Disconnect Hose Fittings2/3/1971
en Isolated Reports of the Turbocharger Induction Duct Retaining Studs Backing Out and Being Ingested into the Compressor Section of the Turbocharger9/5/1972
en Fuel Pump Fitting Inspection4/16/1974
en Inspection of Turbocharger Turbine (Exhaust) Housings5/15/1976
A en Inspection of Turbocharger Turbine (Exhaust) Housings8/9/1976
en Oil Seepage into Overboard Exhaust Pipe4/3/1978
en Inspection and Replacement of Turbocharger Lubrication System Check Valve10/2/1978
en Securing Turbocharger Bearing Housing Flange Attachment Screws2/7/1979
en Recommended Overhaul Procedures for Sky-Ox Equipment7/6/1979
en Resetting of Flow Rates of Sky-Ox Oxygen Regulators7/28/1980
en Rajay Turbocharger Model 325E10 Inspection of Turbocharger Turbine Housings P/N TC-60-11 and/or 600510-01, 600510-026/24/1982
A en Rajay Turbocharger Model 325E10 Inspection of Turbocharger Turbine Housings P/N TC-60-11 and/or 600510-01, 600510-029/24/1982
en All Rajay Turbocharger Oil Supply, Drain, Fuel and Air Hose Assemblies that were Changed or Modified per the Installation Drawing for the Appropriate Rajay Turbocharger Installation Kit8/31/1981
en Roto-Master (Formerly Rajay) Turbocharger Turbine Housing Inspection. This Procedure Also Includes a One Time EGT Gauge Installation and/or Redlining, and then Periodic Calibration Checks Thereafter4/23/1986
en All RAYJAY Turbocharger Oil Supply, Drain, Fuel and Air Hose Assemblies that were Modified Per the Installation Drawing Appropriate RAYJAY Turbo Charger Installation Kit9/28/2022