The Aviation DataBase: Service Information: Navion
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Field Service Bulletins
NameRevisionLangSubjectDate
en Nose Gear Inner Cylinder Bearing Retainer Nut11/01/1947
en Temporary Removal of Hydraulic Power System10/08/1946
en Nose Gear Extension Restrictor03/22/1948
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 Bolts05/20/1948
Supp 1 en Nose Gear Drag Brace Attaching Structure Reinforcement, Addition of Safety Washers & Replacing Four (4) Rivets with Bolts06/10/1948
en Mandatory Inspection of Nose Gear Retracting Drag Link08/05/1949
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 Engine01/03/1949
en Propeller Control Replacement11/01/1946
en Inspection of Main Landing Gear Housing (Axle Forging)01/18/1949
en Crankcase Breather Line Rework11/14/1946
en Mandatory Navion Fuel System (Carter Diaphragm Pumps)02/15/1949
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 Valve07/11/1949
en Exhaust Tail Pipe Weld Rework11/19/1946
en Mandatory Inspection of Shakespheare Throttle Controls09/01/1950
en Inspection and Modification of Hartzell Propeller Control Unit Method of Attachment to Lycoming Engine Nose Section12/29/1950
en Baggage Compartment Placarding12/06/1946
en Inspection of Throttle Actuated Landing Gear Warning Horn Switch02/01/1951
en Valve Spring Spacer Installation02/04/1947
en Mandatory Improved Cabin Seating02/01/1951
en Nose Wheel Valve Stem Clearance11/27/1946
en Landing Gear Retract Link Inspection04/15/1951
en Push Rod and Valve Rocker Modification02/04/1947
en Modification Required in Connection with Baggage Compartment Auxiliary Fuel Tank Installation05/01/1951
en Landing Gear Control Handle Lock Installation01/02/1947
en Carburetor Air Induction System - Inspection and Maintenance07/02/1951
en Mandatory Carburetor Air Duct Change02/12/1952
en Cracking of Stabilizer Forward Attaching Fittings09/26/1952
en Carburetor Air Straightener Installation01/16/1947
en Mandatory Generator Terminal Insulator Installation02/14/1947
en Mandatory Aileron Control Chain Jamming09/26/1952
en Nose Gear Actuating Cylinder Replacement01/23/1947
en Mandatory Inspection, Stabilizer Front Attachment Fitting02/16/1953
en Mandatory Hartzell No. 8628 Propeller Blade Tip Rework01/28/1947
en Increased Engine Cowl Flap Opening03/27/1953
en Mandatory Relative Motion Between Fuselage and Wings08/05/1954
en Nose Gear Steering Bellcrank Replacement01/23/1947
en Mandatory Inspection and/or Repair of Cracks in Fuselage Frame 143-31004-16 at Station 294.111/15/1954
en Brake Assembly Rework02/06/1947
en Mandatory Inspection and/or Repair of Rear Wing Spar Junction Fittings12/05/1955
en Mandatory Carburetor Vapor Return Line Hose Replacement04/11/1947
en Mandatory Inspection and/or Repair of Forward Engine Mounts12/05/1955
en Mandatory Inspection and/or Repair of Nose Gear Drag Lines12/05/1955
en Starter Engaging Mechanism Rework05/12/1947
revised en Mandatory Controlled Hydraulic Power System Installation04/01/1947
en Starter Pedal Reinforcement Bracket Installation03/26/1947
en Nose Gear Hydraulic Cylinder Line Replacement04/03/1947
en Delco Remy Starting Motor Modification04/15/1947
en Mandatory Hartzell Propeller Piston Guide Pin Safetying05/05/1947
en Mandatory Engine Mount Front Frame Reinforcement05/09/1947
en Mandatory Fuel Strainer Drain Cock Replacement05/01/1947
en Mandatory Elevator Leading Edge Rib Installation ((Draw 145-89042))07/02/1947
Supp 1 en Mandatory Elevator Leading Edge Rib Installation11/01/1947
en Landing Gear Retract Link Inspection12/17/1958
en Cabin Heater Fuel Control Valve Inspection06/17/1947
en Mandatory Fuel Pump Inlet Lines Relocation and Compliance with Continental Motors' Bulletin M-48-103/15/1948
en Mandatory Fuel System Inspection04/30/2007
Flight Manual Supplements
NameRevisionLangSubjectDate
en 20-Gallon Wing Fuel Tank Installation03/24/1955
Maintenance Alerts
NameRevisionLangSubjectDate
en Nose Gear Fork Service Bulletin08/06/2010
Miscellaneous Manuals
NameRevisionLangSubjectDate
en 205 - 4th Edition01/01/1950
en Third Ryan Edition 1946-47-48-49 and 1950 Model Navions04/01/1950
en 1949 Model 3rd Edition04/01/1949
en L17
en A & B 300dpi
en Technical Manual & Maintenance Instructions: L-17A, L-17B and L-17C12/01/1954
Operating Tips
NameRevisionLangSubjectDate
10 en Spark Plug Information for Pilots and Maintenance Men...09/30/1950
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...01/31/1950
3 en Here's the Safe Way to Clean Navion Windshields and Canopy Windows...02/28/1950
4 en Tests Indicate Carburetor Modification and Relocation of Engine Thermocouple Desirable...03/31/1950
5 en Fit of Engine Cooling Baffles is Important...04/30/1950
6 en Keep Hydraulic Pressure "On" when Taxiing for Added Safety...05/31/1950
7 en Hot Weather Causes Window Expansion...06/30/1950
8 en Radios - Operating Do's and Don'ts...07/31/1950
9 en Antidote for Dragging Brakes...08/31/1950
1 en Lock that Primer...12/31/1950
10 en Elimination of Water from Fuel System Especially Important During Cold Weather...09/30/1951
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...01/31/1951
3A en Help Your Navion Help You in Marginal Weather...02/28/1951
4 en Suggestions for Obtaining Maximum Cruising Speed...03/31/1951
4A en Clean that Carburetor Air Filter...04/30/1951
6 en How to Keep Fairing Attaching Screws Tight...05/31/1951
8 en Here's How to Provide Additional Tail Tie-Down Fitting...07/31/1951
9 en Personal-Aircraft Owners Guide...08/31/1951
1 en Factors to be Considered when Selecting a Winter Oil...12/31/1951
2 en OOPS!! Correction Please...01/31/1952
3 en Spark Plug Fouling - Some of its Causes and Cures...02/29/1952
4 en Factors that Contribute to Spark Plug Fouling...03/31/1952
5 en On the Subject of Improved Cabin Ventilation...05/31/1952
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 Valve08/23/2005
en Mandatory Airframe - Engine Mount07/13/2004
en Mandatory Airframe - Fuselage Reinforcing Kit07/20/2004
A en Mandatory Airframe - Fuselage Reinforcing Kit07/17/2009
en Mandatory Fuel System - Inspection of the Fuel System Continued Safe Operation02/27/2007
A en Mandatory Fuel System - Inspection of the Fuel System Continued Safe Operation05/01/2007
en Mandatory Auxiliary Fuel System Placarding06/08/2012
en Mandatory Cabin Air Valve Housing Support07/25/2013
1 en Mandatory Cabin Air Valve Housing Support09/19/2013
en Mandatory Frame Assembly Station 311.07 Inspection09/16/2013
Service Information Letters
NameRevisionLangSubjectDate
en Fuel Accumulator Tank - Replacement02/20/1965
Service Letters
NameRevisionLangSubjectDate
en Engine Cowl Dzus Spring Rework01/01/1947
en Propeller Control Friction Lock01/01/1947
en Nose Wheel Vibration05/16/1947
en Brake Assembly Rework02/10/1947
en Primer Replacement02/14/1947
en Leaking Hydraulic Pressure Relief Valve Repair02/26/1947
revised en Low Fuel Pressure05/16/1947
en Cabin-Heater Thermostat Switch Cam Adjustment03/31/1947
en Starter Pedal Reinforcement Bracket03/11/1947
en Hartzell Propeller Blade Pitch Change Correction03/04/1947
en Engine Starter Adjustment03/17/1947
en Carburetor Air Straightener Installation03/20/1947
en Push Rod and Valve Rocker Modification02/04/1947
en Service Manuals Class "C" Equipment03/21/1947
en Cancellation of Field Service Bulletin No. 2403/21/1947
en Inspection of General Electric Radio Power Pack Attaching Screws03/21/1947
en Cancellation of Special Instructions No. 1803/26/1947
en Bendix Service Instruction Tour03/28/1947
en Supplement to Gyro Instrument Panel Kits04/08/1947
en Cushion Clamps for the Flap Hydraulic Lines04/08/1947
en Flap Control Poppet Valve Replacement04/08/1947
en Nose Gear Steering Bellcrank Replacement01/23/1947
en Inspection of Fuel Pump Bowl Screws04/11/1947
en Oil Separator and Hydraulic Tank Vent Lines04/22/1947
en "Etching" A Preparation for Painting05/05/1947
en Hartzell Propeller Piston Guide Pin Safetying05/08/1947
en Hartzell Piston Cylinder Installation Precautions05/15/1947
revised en Navion Field Service Bulletin Record02/02/1948
en Hartzell Propeller Servicing06/03/1947
en Cancellation of Service Letter No. 2305/23/1947
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. 145-58801-5801/19/1948
en Proposed C.A.A. Airworthiness Directive Note for Navion Airplanes Equipped with Hartzell Propellers01/28/1948
en Wrinkling of Fuselage Skin Near Lower Longeron at Fuselage Station No. 93.43802/06/1948
en Cabin Air Exit02/20/1948
en Nose Wheel Shimmy02/20/1948
en Cabin Heaters - South Wind Model 977-B02/23/1948
en Navion Field Service Bulletin No. 23 C.A.A A.D Mandatory Note 47-31-203/08/1948
en Rigging Nose Gear Actuating Linkage03/16/1948
en Navion Field Service Bulletin Warranty03/16/1948
en Fuel System - NAV4-2 through NAV4-1110, Fuel Pump Inlet Lines Relocation and Engine Fuel Pump Replacement03/16/1948
en Navion Starter Status04/16/1948
en Adjusting of Carburetor Idle Mixture and Checking Fuel Shut-Off Valve to Preclude Fuel Pressure Loss05/15/1948
en Replacement of Hydraulic Pressure Line04/15/1948
en Safety Washers on Main Gear Retracting Links and Nose Gear Retracting Cylinder Mounting Structure Rivet Replacement04/12/1948
en Proposed C.A.A. Airworthiness Directive Note for All Navion Airplanes Equipped with Carter Diaphragm Fuel Pumps05/20/1948
en Main Landing Gear Strut Trunnion Repair05/10/1948
en Electrical Shorting of Fuse (Circuit Breaker) Panel08/24/1948
en Cancellation of Continental Service Bulletin No. M48-1 and North American Aviation Bulletin No. 3608/30/1948
en Modification of Hartzell Propeller Blade Counterweights and Proper Adjustment of Propeller09/27/1948
en Wheel and Tire Balancing (Statically and Dynamically)10/20/1948
en Repair - Cracked Exhaust Manifold Outlet Cluster02/16/1949
en Suggested Operational Procedures and General Information on the Continental E-185 Engine01/03/1949
en Precautionary Measures: Battery Replacement & Tire Recapping or Retreading02/16/1949
en Adel Electric Fuel Pump Modification on L-17B Aircraft02/07/1949
M en Adel Electric Fuel Pump Modification on L-17B Aircraft02/07/1949
en Navion Model Designation04/01/1949
en Opening of Rear Seat Bottom Spring Attaching Loops Caused by Abnormal Loads Being Applied in Concentrated Areas of Seat04/20/1949
en King-Seely Fuel Quantity Indicating System06/20/1949
en Deutsch D-51 Fuel Shut-Off Valves07/28/1949
en Use of Aluminum Propeller Blades on E185-3 Continental Engines with Undampened Crankshafts11/18/1949
en Adjustment of Solenoid Operated Delco-Remy Starter Linkage01/03/1950
en Expiration of Part Exchange Offer in Field Service Bulletin No. 401/05/1950
en Installation of South Wind Heater in 1949 Model Navions01/20/1950
en Time Extension for Field Service Bulletin No. 401/23/1950
en Inspection - Carburetor Hot Air Duct, Part No. 145-4220202/07/1950
B en Aeromatic Propeller Changes on Super 26005/12/1950
B en Safetying of Throttle Lever Clamping Screw05/16/1950
B en Lycoming Engine Oil Leakage06/01/1950
en Installation of 145-4808l Fuel Tank Filler Neck Door11/05/1950
revised en Special Precautions to be Taken During Engine Cleaning Operation on Super 26006/26/1950
B en Use of Carburetor Heat06/26/1950
B en Improved Generator Voltage Regulation and Reduction of Radio Interference07/14/1950
en Instructions for RCA Model 116 Radio Installation Check-Out Prior to Filing RCA Supplemental Warranty Return Form08/17/1950
en Recommended "Y" Drive and Hydraulic Pump Combination08/17/1950
en Adel Fuel Pump Installation Instructions08/30/1950
en Attachment of Grid Plates in Carburetor Air Riser Assembly10/02/1950
en Fuel System Accumulator Tank Maintenance and Modification02/01/1951
en Downdraft Cooling System for Lycoming G0435-C2 Engine in the Navion11/03/1952
en Hydraulic System Maintenance and Related Component Rigging12/23/1958
en Engine Cooling Aids for Hot Weather Flying08/26/1952
en Part No. 143-33153 Shaft-Main Landing Gear Actuating Strut11/18/1960
Supp 1 en Engine Cooling Aids for Hot Weather Flying11/05/1952
en Illustration Correction03/14/1955
en Part No. 145-58145-3 End Fitting-Hydraulic Power and Control Shaft-Landing Gear Selector Valve03/31/1961
en AN5-7A (Two Each at Fuselage Station 54), AN5-10A (Two Each at Fuselage Station 40.5) Engine Mount Attach Bolts05/22/1962
en Engine Breather Line Freezing in Extreme Cold Weather Operation02/20/1963
en Binding of Control Wheel Push-Pull Tubes04/25/1963
en Loose Rivets Through Wing Skin and Stringers01/07/1964
en Operation at Low Engine R.P.M.07/28/1964
en Mandatory Fuel Accumulator Tank - Replacement02/20/1965
en Mandatory Wing Closure Strip - Inspection02/20/1965
en Suggested Nondestructive Inspection Procedures for Landing Gear09/15/2010
en Usage of 6.50-8 6-Ply Main Landing Gear Tire in Place of 7.00-8 4-Ply Tire Due to Availability06/14/2023
en List of All Service Letters Including the Service Letters
Special Instructions
NameRevisionLangSubjectDate
revised en General Electric Two Way Radio Installation09/26/1945
revised en Landing Light Installation08/01/1945
en Sensitive Altimeter Installatoin
revised en Instrument-Flying Panel Installation09/25/1946
revised en Cabin Heater Installaton04/14/1947
revised en Flare Installation12/26/1946
revised en Gyro Instrument Panel Installation04/14/1947
en Auxillary Fuel Tank Installation03/08/1948
revised en Uncrating and Assembly - Export12/18/1946
en Ranger Two-Way Radio Installation01/25/1947
revised en Koppers (Aeromatic) Propeller Installation12/01/1948
revised en Warning Horn Replacement02/17/1947
en General Electric Radion Speaker Installation01/10/1947
revised en Radion Loop Installation03/06/1947
revised en Gyro Instrument Panel (Modified) Installation04/15/1947
revised en Vacuum Instrument Provisions Installation04/15/1947
en Inspection and Rework of Replacement Wing Accumulator Tank Brackets03/16/1947
revised en Ranger Two-Way Radio Installation (L17A Airplanes)07/22/1947
en Instrument Panel Installation - L17A Airplanes07/11/1947
en Surface Control Lock Installation07/01/1947
revised en Fuel Vent Line Drain Installation07/14/1947
en Engine Breather Line Replacement - L17A Airplanes07/21/1947
en Manifold Pressure Gauge Installation06/24/1948
en Outside Air Temperature Thermometer Installation01/20/1948
en Dual Phone Jack Installation12/30/1947
en Soundproofing for North American-Built Navions03/29/1948
en Electric Fuel Pump Kit02/10/1948
en Additional Cabin Air Exit Ventilation Installation03/08/1948
en Bendix Dome Speaker Installatoin03/15/1948
en Installation Bendix PMN-1A Loop Antenna for Direction Finding03/16/1948
en General Electric Dome Speaker Installation12/22/1947
en Installation Instructions for Hayes Goodrich Brake Reinforcements12/12/1947
en Venturi Vacuum Gyro Instrument Panel Installation06/21/1948
en Romec Fuel Pump System Installation08/23/1948
A en Romec Fuel Pump System Installation12/01/1949
A en Romec and Adel Fuel Pump Kit11/15/1949
en Auxiliary Under Seat Fuel Tank04/01/1949
en Dual Vinturi Tube Installation06/21/1948
en Direct Controlled Fuel Shut-Off Valve06/24/1948
en Carter Fuel Pump Breather Drain Line06/02/1948
en Cylinder Head Temperature Gauge08/16/1948
en Gyro Instrument Kit - Air Force Type Panel03/02/1949
en Installation of Replacement Hartzell Propeller Micarta Guide Blocks08/17/1948
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 Installation02/15/1949
en Fuel Filter Screen Installation03/01/1949
en New York Air Brake Hydraulic Pump04/01/1949
en Wheel Well Fairing Doors Installation03/25/1949
en Engine Exhaust Muffler Heater Installaton04/29/1949
en "Y" Drive Vacuum Pump Installation08/11/1949
en Conversion, Hartzell Plastic Blade Propeller to Metal Blade07/06/1949
en R.C.A. Model AVA-129 Loop Antenna Installation10/17/1949
en Left Main Fuel Tank Replacement12/01/1949
en Installation - Cabin Ventilator Kit, Ryan Dwg. No. 146-5330202/24/1950
revised en Eclipse E-80 Starter Installation04/28/1950
en Side Panel Air Inlet Vent Installation for all Navions07/27/1950
revised en Installation of Cabin Reverse Flow Ventillation System04/20/1951
en Remote Indicating Compass Kit Installation11/05/1950
en Position Light Flasher (NARCO) Installation11/01/1950
en Windshield Sun Visor Kit Installation for all Navions11/05/1950
en Installation of Canopy Window Curtains for all Navions01/02/1951
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 Door11/05/1950
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