The Aviation DataBase: Service Information: Mitsubishi
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DataBases updated: Jun 6th, 2025
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Flight Manual Supplements
NameRevisionLangSubjectDate
4 en P Model04/06/1994
1 en Airesearch TPE331-5-252M Engines and Hartzell P/N HC-B4TN-5( )/LT10282( )-5.3R Propeller12/18/1992
6 en N Model04/06/1994
4 en Solitaire04/06/1994
5 en Marquise04/06/1994
en NAMC YS-1110/02/1990
en NAMC YS-11A10/02/1990
en NAMC YS-11A10/02/1990
en NAMC YS-11A10/02/1990
Service Bulletins
NameRevisionLangSubjectDate
en Mandatory Outer Tank Switch Wiring Modification10/18/1979
en Mandatory Outer Tank Switch Wiring Modification10/18/1979
A en Mandatory Avionic Equipment Mounting Shelf02/01/1980
en Mandatory Bendix Autopilot Disengagement Method Standardization12/18/1987
C en Mandatory Installation of Heatproof Material Around Engine Bleed Air Tubing, Baggage Compartment01/07/1976
en Mandatory Elevator Nose-Down Trim Limit Change08/26/1992
en Mandatory Auto-Ignition System Installation11/15/1995
A en Mandatory Inspection/Replacement of Forward Attachment Fitting Bolts for Wing Tip Tanks11/05/1996
en Elevator Trim Indicator Modification08/06/1998
en Pitot/Static Drain Markings06/05/1984
1 en Service Placards Installation11/13/1985
en Placard and markings - Replcament of Aft Facing Seat Information Placards06/12/1990
en Main Landing Gear Lubrication12/10/1985
en Maintenance Precautions01/31/1994
en Insulating Sleeve Installation06/20/1983
en Safety Wire Application09/03/1985
en Air Conditioning Duct Material Change03/28/1983
en Refrif=geration Package Wiring Damage07/08/1983
1 en Mandatory Enviromental Control Unit (ECU)01/13/1984
1 en Mandatory Pressure Regulator Valve Replacement01/18/1984
en Mandatory Emergency Pressurization Outlet01/13/1984
en Mandatory Cabin Over Pressure Switch Vent10/28/2023
en Mandatory ECU Ejector S.O. Valve Operation11/29/1983
en Mandatory Temperature Sensor Mounting Reinforcement05/14/1984
en Mandatory Replacment of Generator Control Unit08/25/1982
1 en Cancellation of Service Bulletin - Superseded by Service Bulletin 24-00603/13/1984
1 en Mandatory Power Distribution01/31/1984
en Mandatory Junction Panel Current Sensor Guard02/13/1984
en Mandatory Current Sensors (P/N 25C1-X/25C2-X)04/02/1984
1 en Standby Power Supply Modification10/15/1984
en Mandatory Replacement of Emergency and Inverter No. 2 Relays08/28/1984
en Mandatory Current Sensor Screw06/10/1985
en Mandatory Replacement of Current Sensors09/15/1993
en Mandatory Engine Fire Extinguisher Bottels11/01/1984
en Mandatory Alternate Means of Compliance for Airworthiness Directive AD 94-25-10, Dated December 26, 1994, Applicable to MU-300 Airplanes01/12/1996
en Mandatory Power Plant - Replacement of Engine Mount Bolts and Nuts01/08/1992
en Mandatory Starter Relay Replacement04/30/1986
en Starter Relay Replacment04/25/1986
en Improved Retention of Thrust Reverser Power Lever Bearings05/06/1993
3 en Thrust Reverser Installation09/17/1986
1 en Thrust Levers10/01/1985
en Evaluation of Starter - Generatlor Brush Wear07/18/1984
A en Mandatory Inspection of Wing Attachment Hardware03/10/2006
en Mandatory Fuselage Frame Inspection and Repair or Replacement07/22/2013
en Mandatory Main Landing Gear Oleo Attach Fitting - Inspection of09/29/2015
en Mandatory Propeller Pitch Control Lever Clamping Bolt, Replacement of02/24/2016
A en Removal of Vent Check Valve, Main Fuel Tank07/19/1971
A en Mandatory Special Inspection on Top Coating, Wing Integral Main Fuel Tanks04/23/1971
B en Mandatory Special Inspection on Top Coating, Wing Integral Main Fuel Tanks01/05/1972
en Replacement of Housing and Attaching Bolts of Bracket, Nose Landing Gear Actuator06/26/1972
C en Mandatory Inspection of Flap Main Jack Screw and/or Inspection/Readjustment of Main Gear Box Location11/19/1976
A en Mandatory Inspection of Propeller Pitch Control Lever07/24/1980
en Inspection and Replacement of MLG Forward Door Emergency Operating Cable05/16/1975
A en Inspection and Replacement of MLG Forward Door Emergency Operating Cable03/24/1977
A en Mandatory Inspection and Modification of Engine Nacelle Upper Door Latches07/14/1975
C en Mandatory Inspection and Rework of Tip Tank Conduit Tube10/02/1981
en Mandatory Replacement of Elevator Trim Tab Bracket09/01/1976
E en Mandatory Replacement of Elevator Trim Tab Bracket09/26/1984
B en Mandatory Modification of Engine Nacelle Tail Area09/11/1980
A en Mandatory Replacement of Link, Engine Nacelle Upper Door11/17/1977
B en Mandatory Inspection and Replacement of Nose Landing Gear Strut Assembly04/08/1985
en Mandatory Addition of Ceiling Cover, Rear Baggage Compartment11/16/1979
A en Mandatory Inspection of Engine Fire Detecting System and DC Power Emergency Relay System06/09/1981
B en Mandatory Inspection of Engine Fire Detecting System and DC Power Emergency Relay System06/16/1982
en Mandatory Inspection and Replacement of Engine Electrical Wire12/21/1981
A en Mandatory Retorque of Coupling Nut on the Anti-Icing Bleed Air Tubing for the Engine Air Inlet Tip Anti-Icing System04/12/1984
en Mandatory Additional Seal and Torque Inspection of Flap Flexible Shafts02/13/1985
en Mandatory Generator Circuit Wires Inspection and Modification12/27/1985
en Mandatory Bendix Autopilot Disengagement Method Standardization10/13/1987
en Mandatory Rudder Trim Tab Modification11/20/1990
en Mandatory Elevator Nose-Down Trim Limit Change09/11/1992
en Mandatory Forward Fitting Bolt of Wing Tip Tank Inspection/Replacement09/29/1995
B en Mandatory Auto-Ignition System Installation10/27/1997
en Elevator Trim Indicator Modification07/13/1998
en Mandatory Installation of Trim-In-Motion Alert System and Automatic Autopilot Disconnect System07/02/1997
en Mandatory De-Ice System Modification07/02/1997
B en Mandatory Inspection of Engine Torque Indication System03/08/2007
en Inspection of Wing Attachment Hardware07/14/2004
en Mandatory Fuselage Frame Inspection and Repair or Replacement07/10/2013
en Mandatory Main Landing Gear Oleo Attach Fitting - Inspection of06/30/2015
en Mandatory Propeller Pitch Control Lever Clamping Bolt, Replacement of12/25/2015
Service Information Letters
NameRevisionLangSubjectDate
1 en ECU Temperature Control Valves06/05/1984
A en P/N 2202560-All Environmental Control Unit (ECU) - Loose Rivets04/23/1984
Service Letters
NameRevisionLangSubjectDate
en Airresearch Manufacturing Company Service Informatin Letter 2202560-21-L-575 Revision A, dated April 23, 198405/07/1984
en Ram Air Discharge Duct Assembly Cracks05/23/1984
en J.E.T. Service Letter SL-8K Revision Dated April 15, 198309/12/1984
Service News
NameRevisionLangSubjectDate
en Main Landing Gear Oleo Fitting-Lubrication of04/27/2012
en Main Landing Gear Oleo Attach Fitting - Inspection of07/18/2013
Service Notices
NameRevisionLangSubjectDate
en Avionic Equipment Mounting Shelf11/30/1979
en Maintenance Instruction for Emergency Lighting Power Supply02/17/1984
en Generator Split Trouble-Shooting Tips05/29/1984
en Improved Airplane Center of Gravity10/10/1984
en Improved ITT Indicator01/13/1984
Service Recommendations
NameRevisionLangSubjectDate
A en Installation of Defogging Air Temp. Warning System for Windshield11/16/1978
en Propeller Pitch Control Lever Secondary Retention Feature, Installation of06/29/2018
A en Increase of Anti-Ice Capability of Pitot Tube10/23/1984
en Propeller Pitch Control Lever Secondary Retention Feature, Installation of06/29/2018
B en Propeller Pitch Control Lever Secondary Retention Feature, Installation of04/28/2020
en Cabin Pressurization Solenoid Valves09/26/1983
1 en Air Conditioning Duct Flange Retainers05/20/1985
en Cockpit Temperature Control Sensor Fan Noise08/15/1984
en Cabin Air Duct Carpet - Imporvement04/27/1990
en Air Conditioning System09/25/1987
en Outflow/Safety Valve - Inspection/Replacement04/09/1993
1 en Autopilot Roll Trim Computer Replacement01/31/1984
1 en Autopilot Pitch Command01/10/1985
1 en Generator Relay Replacement03/20/1986
en Static Inverter Covers01/24/1986
2 en MU-300 Performance Enhancement Package06/01/1984
en Thrust Reverser Control - Lever Modification of10/30/1987
Miscellaneous
NameRevisionLangSubjectDate
en Corrosion Control Program: YS-1111/01/1993