The Aviation DataBase: Service Information: Navion
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Field Service Bulletins
NameRevisionLangSubjectDate
en Nose Gear Inner Cylinder Bearing Retainer Nut11/1/1947
en Temporary Removal of Hydraulic Power System10/8/1946
en Nose Gear Extension Restrictor3/22/1948
en Separate Hydraulic Relief Valve Installation10/21/1946
en Nose Gear Drag Brace Attaching Structure Reinforcement, Addition of Safety Washers & Replacing Four (4) Rivets with Bolts5/20/1948
Supp 1 en Nose Gear Drag Brace Attaching Structure Reinforcement, Addition of Safety Washers & Replacing Four (4) Rivets with Bolts6/10/1948
en Mandatory Inspection of Nose Gear Retracting Drag Link8/5/1949
en Landing Gear Up-Lock Control Rework10/29/1946
en Mandatory Counterweights, Modification of Propeller; Adjustment of Propeller; Rework of 4-1/8 Inch Counterweights; Inspection of Engine1/3/1949
en Propeller Control Replacement11/1/1946
en Inspection of Main Landing Gear Housing (Axle Forging)1/18/1949
en Crankcase Breather Line Rework11/14/1946
en Mandatory Navion Fuel System (Carter Diaphragm Pumps)2/15/1949
en Fuel Accumulator Tank Sump Fitting Inspection and Rework11/19/1946
en PS-5C Carburetor Identification Inspection11/27/1946
en Mandatory End Fitting - Hydraulic Power and Control Unit Shaft - Landing Gear Selector Valve7/11/1949
en Exhaust Tail Pipe Weld Rework11/19/1946
en Mandatory Inspection of Shakespheare Throttle Controls9/1/1950
en Inspection and Modification of Hartzell Propeller Control Unit Method of Attachment to Lycoming Engine Nose Section12/29/1950
en Baggage Compartment Placarding12/6/1946
en Inspection of Throttle Actuated Landing Gear Warning Horn Switch2/1/1951
en Valve Spring Spacer Installation2/4/1947
en Mandatory Improved Cabin Seating2/1/1951
en Nose Wheel Valve Stem Clearance11/27/1946
en Landing Gear Retract Link Inspection4/15/1951
en Push Rod and Valve Rocker Modification2/4/1947
en Modification Required in Connection with Baggage Compartment Auxiliary Fuel Tank Installation5/1/1951
en Landing Gear Control Handle Lock Installation1/2/1947
en Carburetor Air Induction System - Inspection and Maintenance7/2/1951
en Mandatory Carburetor Air Duct Change2/12/1952
en Cracking of Stabilizer Forward Attaching Fittings9/26/1952
en Carburetor Air Straightener Installation1/16/1947
en Mandatory Generator Terminal Insulator Installation2/14/1947
en Mandatory Aileron Control Chain Jamming9/26/1952
en Nose Gear Actuating Cylinder Replacement1/23/1947
en Mandatory Inspection, Stabilizer Front Attachment Fitting2/16/1953
en Mandatory Hartzell No. 8628 Propeller Blade Tip Rework1/28/1947
en Increased Engine Cowl Flap Opening3/27/1953
en Mandatory Relative Motion Between Fuselage and Wings8/5/1954
en Nose Gear Steering Bellcrank Replacement1/23/1947
en Mandatory Inspection and/or Repair of Cracks in Fuselage Frame 143-31004-16 at Station 294.111/15/1954
en Brake Assembly Rework2/6/1947
en Mandatory Inspection and/or Repair of Rear Wing Spar Junction Fittings12/5/1955
en Mandatory Carburetor Vapor Return Line Hose Replacement4/11/1947
en Mandatory Inspection and/or Repair of Forward Engine Mounts12/5/1955
en Mandatory Inspection and/or Repair of Nose Gear Drag Lines12/5/1955
en Starter Engaging Mechanism Rework5/12/1947
revised en Mandatory Controlled Hydraulic Power System Installation4/1/1947
en Starter Pedal Reinforcement Bracket Installation3/26/1947
en Nose Gear Hydraulic Cylinder Line Replacement4/3/1947
en Delco Remy Starting Motor Modification4/15/1947
en Mandatory Hartzell Propeller Piston Guide Pin Safetying5/5/1947
en Mandatory Engine Mount Front Frame Reinforcement5/9/1947
en Mandatory Fuel Strainer Drain Cock Replacement5/1/1947
en Mandatory Elevator Leading Edge Rib Installation ((Draw 145-89042))7/2/1947
Supp 1 en Mandatory Elevator Leading Edge Rib Installation11/1/1947
en Landing Gear Retract Link Inspection12/17/1958
en Cabin Heater Fuel Control Valve Inspection6/17/1947
en Mandatory Fuel Pump Inlet Lines Relocation and Compliance with Continental Motors' Bulletin M-48-13/15/1948
en Mandatory Fuel System Inspection4/30/2007
Flight Manual Supplements
NameRevisionLangSubjectDate
en 20-Gallon Wing Fuel Tank Installation3/24/1955
Maintenance Alerts
NameRevisionLangSubjectDate
en Nose Gear Fork Service Bulletin8/6/2010
Miscellaneous Manuals
NameRevisionLangSubjectDate
en 205 - 4th Edition1/1/1950
en Third Ryan Edition 1946-47-48-49 and 1950 Model Navions4/1/1950
en 1949 Model 3rd Edition4/1/1949
en L17
en A & B 300dpi
en Technical Manual & Maintenance Instructions: L-17A, L-17B and L-17C12/1/1954
Operating Tips
NameRevisionLangSubjectDate
10 en Spark Plug Information for Pilots and Maintenance Men...9/30/1950
11 en Preventative Radio Maintenance...10/31/1950
12 en Cold Weather Powerplant Operational Notes...11/30/1950
2 en Cold Weather Ground Running and Engine Warm Up...1/31/1950
3 en Here's the Safe Way to Clean Navion Windshields and Canopy Windows...2/28/1950
4 en Tests Indicate Carburetor Modification and Relocation of Engine Thermocouple Desirable...3/31/1950
5 en Fit of Engine Cooling Baffles is Important...4/30/1950
6 en Keep Hydraulic Pressure "On" when Taxiing for Added Safety...5/31/1950
7 en Hot Weather Causes Window Expansion...6/30/1950
8 en Radios - Operating Do's and Don'ts...7/31/1950
9 en Antidote for Dragging Brakes...8/31/1950
1 en Lock that Primer...12/31/1950
10 en Elimination of Water from Fuel System Especially Important During Cold Weather...9/30/1951
11 en Cold Weather Starting Tips...10/31/1951
12 en Rudder Pedal Rigging as Applied to the Rudder and Nose Gear...11/30/1951
3 en Throttle-Propeller Coordination...1/31/1951
3A en Help Your Navion Help You in Marginal Weather...2/28/1951
4 en Suggestions for Obtaining Maximum Cruising Speed...3/31/1951
4A en Clean that Carburetor Air Filter...4/30/1951
6 en How to Keep Fairing Attaching Screws Tight...5/31/1951
8 en Here's How to Provide Additional Tail Tie-Down Fitting...7/31/1951
9 en Personal-Aircraft Owners Guide...8/31/1951
1 en Factors to be Considered when Selecting a Winter Oil...12/31/1951
2 en OOPS!! Correction Please...1/31/1952
3 en Spark Plug Fouling - Some of its Causes and Cures...2/29/1952
4 en Factors that Contribute to Spark Plug Fouling...3/31/1952
5 en On the Subject of Improved Cabin Ventilation...5/31/1952
6 en New Policy Governs Publication of Operating Tips...11/30/1951
7 en Down-Draft Cooling and Higher Horsepower Continental Engine...11/30/1951
8 en Fuel System Leaks...10/31/1952
Service Bulletins
NameRevisionLangSubjectDate
en Clearing & Reinforcement of Instrument Panel Support P/N 143-5100711/21/1966
A en Mandatory Fuel System - Fuel Selector Valve8/23/2005
en Mandatory Airframe - Engine Mount7/13/2004
en Mandatory Airframe - Fuselage Reinforcing Kit7/20/2004
A en Mandatory Airframe - Fuselage Reinforcing Kit7/17/2009
en Mandatory Fuel System - Inspection of the Fuel System Continued Safe Operation2/27/2007
A en Mandatory Fuel System - Inspection of the Fuel System Continued Safe Operation5/1/2007
en Mandatory Auxiliary Fuel System Placarding6/8/2012
en Mandatory Cabin Air Valve Housing Support7/25/2013
1 en Mandatory Cabin Air Valve Housing Support9/19/2013
en Mandatory Frame Assembly Station 311.07 Inspection9/16/2013
Service Information Letters
NameRevisionLangSubjectDate
en Fuel Accumulator Tank - Replacement2/20/1965
Service Letters
NameRevisionLangSubjectDate
en Engine Cowl Dzus Spring Rework1/1/1947
en Propeller Control Friction Lock1/1/1947
en Nose Wheel Vibration5/16/1947
en Brake Assembly Rework2/10/1947
en Primer Replacement2/14/1947
en Leaking Hydraulic Pressure Relief Valve Repair2/26/1947
revised en Low Fuel Pressure5/16/1947
en Cabin-Heater Thermostat Switch Cam Adjustment3/31/1947
en Starter Pedal Reinforcement Bracket3/11/1947
en Hartzell Propeller Blade Pitch Change Correction3/4/1947
en Engine Starter Adjustment3/17/1947
en Carburetor Air Straightener Installation3/20/1947
en Push Rod and Valve Rocker Modification2/4/1947
en Service Manuals Class "C" Equipment3/21/1947
en Cancellation of Field Service Bulletin No. 243/21/1947
en Inspection of General Electric Radio Power Pack Attaching Screws3/21/1947
en Cancellation of Special Instructions No. 183/26/1947
en Bendix Service Instruction Tour3/28/1947
en Supplement to Gyro Instrument Panel Kits4/8/1947
en Cushion Clamps for the Flap Hydraulic Lines4/8/1947
en Flap Control Poppet Valve Replacement4/8/1947
en Nose Gear Steering Bellcrank Replacement1/23/1947
en Inspection of Fuel Pump Bowl Screws4/11/1947
en Oil Separator and Hydraulic Tank Vent Lines4/22/1947
en "Etching" A Preparation for Painting5/5/1947
en Hartzell Propeller Piston Guide Pin Safetying5/8/1947
en Hartzell Piston Cylinder Installation Precautions5/15/1947
revised en Navion Field Service Bulletin Record2/2/1948
en Hartzell Propeller Servicing6/3/1947
en Cancellation of Service Letter No. 235/23/1947
en C.A.A. Airworthiness Directive No. AD-782-4, Mandatory Note 13, Dated October 1, 194711/28/1947
en Cancellation of Navion Service Bulletin 2212/12/1947
en Clip Added to Hydraulic Line, No. 145-58801-581/19/1948
en Proposed C.A.A. Airworthiness Directive Note for Navion Airplanes Equipped with Hartzell Propellers1/28/1948
en Wrinkling of Fuselage Skin Near Lower Longeron at Fuselage Station No. 93.4382/6/1948
en Cabin Air Exit2/20/1948
en Nose Wheel Shimmy2/20/1948
en Cabin Heaters - South Wind Model 977-B2/23/1948
en Navion Field Service Bulletin No. 23 C.A.A A.D Mandatory Note 47-31-23/8/1948
en Rigging Nose Gear Actuating Linkage3/16/1948
en Navion Field Service Bulletin Warranty3/16/1948
en Fuel System - NAV4-2 through NAV4-1110, Fuel Pump Inlet Lines Relocation and Engine Fuel Pump Replacement3/16/1948
en Navion Starter Status4/16/1948
en Adjusting of Carburetor Idle Mixture and Checking Fuel Shut-Off Valve to Preclude Fuel Pressure Loss5/15/1948
en Replacement of Hydraulic Pressure Line4/15/1948
en Safety Washers on Main Gear Retracting Links and Nose Gear Retracting Cylinder Mounting Structure Rivet Replacement4/12/1948
en Proposed C.A.A. Airworthiness Directive Note for All Navion Airplanes Equipped with Carter Diaphragm Fuel Pumps5/20/1948
en Main Landing Gear Strut Trunnion Repair5/10/1948
en Electrical Shorting of Fuse (Circuit Breaker) Panel8/24/1948
en Cancellation of Continental Service Bulletin No. M48-1 and North American Aviation Bulletin No. 368/30/1948
en Modification of Hartzell Propeller Blade Counterweights and Proper Adjustment of Propeller9/27/1948
en Wheel and Tire Balancing (Statically and Dynamically)10/20/1948
en Repair - Cracked Exhaust Manifold Outlet Cluster2/16/1949
en Suggested Operational Procedures and General Information on the Continental E-185 Engine1/3/1949
en Precautionary Measures: Battery Replacement & Tire Recapping or Retreading2/16/1949
en Adel Electric Fuel Pump Modification on L-17B Aircraft2/7/1949
M en Adel Electric Fuel Pump Modification on L-17B Aircraft2/7/1949
en Navion Model Designation4/1/1949
en Opening of Rear Seat Bottom Spring Attaching Loops Caused by Abnormal Loads Being Applied in Concentrated Areas of Seat4/20/1949
en King-Seely Fuel Quantity Indicating System6/20/1949
en Deutsch D-51 Fuel Shut-Off Valves7/28/1949
en Use of Aluminum Propeller Blades on E185-3 Continental Engines with Undampened Crankshafts11/18/1949
en Adjustment of Solenoid Operated Delco-Remy Starter Linkage1/3/1950
en Expiration of Part Exchange Offer in Field Service Bulletin No. 41/5/1950
en Installation of South Wind Heater in 1949 Model Navions1/20/1950
en Time Extension for Field Service Bulletin No. 41/23/1950
en Inspection - Carburetor Hot Air Duct, Part No. 145-422022/7/1950
B en Aeromatic Propeller Changes on Super 2605/12/1950
B en Safetying of Throttle Lever Clamping Screw5/16/1950
B en Lycoming Engine Oil Leakage6/1/1950
en Installation of 145-4808l Fuel Tank Filler Neck Door11/5/1950
revised en Special Precautions to be Taken During Engine Cleaning Operation on Super 2606/26/1950
B en Use of Carburetor Heat6/26/1950
B en Improved Generator Voltage Regulation and Reduction of Radio Interference7/14/1950
en Instructions for RCA Model 116 Radio Installation Check-Out Prior to Filing RCA Supplemental Warranty Return Form8/17/1950
en Recommended "Y" Drive and Hydraulic Pump Combination8/17/1950
en Adel Fuel Pump Installation Instructions8/30/1950
en Attachment of Grid Plates in Carburetor Air Riser Assembly10/2/1950
en Fuel System Accumulator Tank Maintenance and Modification2/1/1951
en Downdraft Cooling System for Lycoming G0435-C2 Engine in the Navion11/3/1952
en Hydraulic System Maintenance and Related Component Rigging12/23/1958
en Engine Cooling Aids for Hot Weather Flying8/26/1952
en Part No. 143-33153 Shaft-Main Landing Gear Actuating Strut11/18/1960
Supp 1 en Engine Cooling Aids for Hot Weather Flying11/5/1952
en Illustration Correction3/14/1955
en Part No. 145-58145-3 End Fitting-Hydraulic Power and Control Shaft-Landing Gear Selector Valve3/31/1961
en AN5-7A (Two Each at Fuselage Station 54), AN5-10A (Two Each at Fuselage Station 40.5) Engine Mount Attach Bolts5/22/1962
en Engine Breather Line Freezing in Extreme Cold Weather Operation2/20/1963
en Binding of Control Wheel Push-Pull Tubes4/25/1963
en Loose Rivets Through Wing Skin and Stringers1/7/1964
en Operation at Low Engine R.P.M.7/28/1964
en Mandatory Fuel Accumulator Tank - Replacement2/20/1965
en Mandatory Wing Closure Strip - Inspection2/20/1965
en Suggested Nondestructive Inspection Procedures for Landing Gear9/15/2010
en Usage of 6.50-8 6-Ply Main Landing Gear Tire in Place of 7.00-8 4-Ply Tire Due to Availability6/14/2023
en List of All Service Letters Including the Service Letters
Special Instructions
NameRevisionLangSubjectDate
revised en General Electric Two Way Radio Installation9/26/1945
revised en Landing Light Installation8/1/1945
en Sensitive Altimeter Installatoin
revised en Instrument-Flying Panel Installation9/25/1946
revised en Cabin Heater Installaton4/14/1947
revised en Flare Installation12/26/1946
revised en Gyro Instrument Panel Installation4/14/1947
en Auxillary Fuel Tank Installation3/8/1948
revised en Uncrating and Assembly - Export12/18/1946
en Ranger Two-Way Radio Installation1/25/1947
revised en Koppers (Aeromatic) Propeller Installation12/1/1948
revised en Warning Horn Replacement2/17/1947
en General Electric Radion Speaker Installation1/10/1947
revised en Radion Loop Installation3/6/1947
revised en Gyro Instrument Panel (Modified) Installation4/15/1947
revised en Vacuum Instrument Provisions Installation4/15/1947
en Inspection and Rework of Replacement Wing Accumulator Tank Brackets3/16/1947
revised en Ranger Two-Way Radio Installation (L17A Airplanes)7/22/1947
en Instrument Panel Installation - L17A Airplanes7/11/1947
en Surface Control Lock Installation7/1/1947
revised en Fuel Vent Line Drain Installation7/14/1947
en Engine Breather Line Replacement - L17A Airplanes7/21/1947
en Manifold Pressure Gauge Installation6/24/1948
en Outside Air Temperature Thermometer Installation1/20/1948
en Dual Phone Jack Installation12/30/1947
en Soundproofing for North American-Built Navions3/29/1948
en Electric Fuel Pump Kit2/10/1948
en Additional Cabin Air Exit Ventilation Installation3/8/1948
en Bendix Dome Speaker Installatoin3/15/1948
en Installation Bendix PMN-1A Loop Antenna for Direction Finding3/16/1948
en General Electric Dome Speaker Installation12/22/1947
en Installation Instructions for Hayes Goodrich Brake Reinforcements12/12/1947
en Venturi Vacuum Gyro Instrument Panel Installation6/21/1948
en Romec Fuel Pump System Installation8/23/1948
A en Romec Fuel Pump System Installation12/1/1949
A en Romec and Adel Fuel Pump Kit11/15/1949
en Auxiliary Under Seat Fuel Tank4/1/1949
en Dual Vinturi Tube Installation6/21/1948
en Direct Controlled Fuel Shut-Off Valve6/24/1948
en Carter Fuel Pump Breather Drain Line6/2/1948
en Cylinder Head Temperature Gauge8/16/1948
en Gyro Instrument Kit - Air Force Type Panel3/2/1949
en Installation of Replacement Hartzell Propeller Micarta Guide Blocks8/17/1948
en Conversion Hartzell -1 or -5 Propeller Installation to -7, -7A or -7B Propeller Installation10/25/1948
en Propeller Conversion, Koppers (Aeromatic) to Hartzell -7, -7A or -7B11/15/1948
en Shutter Installation - Oil Cooler12/13/1948
en Gyro Instrument Panel Installation2/15/1949
en Fuel Filter Screen Installation3/1/1949
en New York Air Brake Hydraulic Pump4/1/1949
en Wheel Well Fairing Doors Installation3/25/1949
en Engine Exhaust Muffler Heater Installaton4/29/1949
en "Y" Drive Vacuum Pump Installation8/11/1949
en Conversion, Hartzell Plastic Blade Propeller to Metal Blade7/6/1949
en R.C.A. Model AVA-129 Loop Antenna Installation10/17/1949
en Left Main Fuel Tank Replacement12/1/1949
en Installation - Cabin Ventilator Kit, Ryan Dwg. No. 146-533022/24/1950
revised en Eclipse E-80 Starter Installation4/28/1950
en Side Panel Air Inlet Vent Installation for all Navions7/27/1950
revised en Installation of Cabin Reverse Flow Ventillation System4/20/1951
en Remote Indicating Compass Kit Installation11/5/1950
en Position Light Flasher (NARCO) Installation11/1/1950
en Windshield Sun Visor Kit Installation for all Navions11/5/1950
en Installation of Canopy Window Curtains for all Navions1/2/1951
en Installation "Y" Drive and Vacuum Pump on Super 260 Navions; Ryan Dwg. No. 146-8901511/22/1950
en Installation of Engine Cowl Flap Kit - Ryan Dwg. No's. 146-31510 and 143-3190111/22/1950
en Installation of 145-48081 Fuel Tank Filler Neck Door11/5/1950
Miscellaneous
NameRevisionLangSubjectDate
en Sea Level vs Altitude Performance Curve - IO-470-H
en Sea Level Performance - IO-550-R
en Inspection Sheet - Model A & B
en Gross Weight and C.G. Limitations - Model H
en Gross Weight and C.G. Limitations
en Fuel Flow vs. BPH for IO-520-B, BA & BB
en Fuel and Power Chart - IO-520B
en Fuel and Power Chart - E-225
en Engine Operations - IO-550-B
en Checklist
en Section 5: Performance - Model H
en Airspeed Indicator Markings - Model H