Navion Service Letters & Service Bulletins - A lot of them!
As I've mentioned in previous posts, it's always bothered me that there was a North American Aviation aircraft out there that we didn't have any manuals for on AirCorps Library. However, in the last few weeks we've remedied that problem, with the help of a donation from the Kimball family of JKE Works. All of the documents below came to AirCorps Library from the Kimball collection for scanning, and were then returned to them - that's how we roll here. So let's dive in to this weeks list of Navion manuals!
Navion Service Letters:
Cancellation of Continental Service Bulletin No. M48-1 & North American Bulletin No. 36
Navion Service Letter Record, 29-June-1949
Adjustment of Solenoid Operated Delco-Remy Starter Linkage, No. 63, 3-Jan-1950
Use of Aluminum Propeller Blades on E185-3 Continental Engines with Undampened Crankshafts, No. 62, 18-Nov-1949
Deutsch D-51 Fuel Shut-Off Valves, No. 61, 28-July-1949
King-Seely Fuel Quantity Indicating System, No. 60, 20-June-1949
Opening of Rear Seat Bottom Spring Attaching Loops caused by Abnormal Loads being Applied in Concentrated Areas of Seat, No. 59, 20-April-1949
Navion Model Designation, No. 58, 1-April-1949
Adel Electric Fuel Pump Modification, No. 57, 7-Feb-1949
Precautionary Measures, Battery Replacements, Tire Recapping or Retreading, No. 56, 16-Feb-1949
Suggested Operational Procedures and General Information on the Continental E-185, No. 55, 3-Jan-1949
Wheel and Tire Balancing (Statically and Dynamically), No. 53, 20-Oct-1948
Modification of Hartzell Propeller Blade Counterweights and Proper Adjustment of Propeller, No. 52, 27-Sept-1948
Cancellation of Continental Service Bulletin No. M48-1 & North American Bulletin No. 36, No. 51, 30-Aug-1948
Pre-Flight Inspection of Carter Diaphragm Fuel Pumps, No. 50, 23-Aug-1948
Electrical Shorting of Fuse (Circuit Breaker) Panel, No. 49,24-Aug-1948
Proposed C.A.A. Airworthiness Directive Note for all Navion Equipped with Carter Diaphragm Fuel Pumps, No. 47, 20-May-1948
Safety Washers on Main Gear Retracting Links and Nose Gear Retracting Cylinder Mounting Structure Rivet Replacement, No. 46, 12-April-1948
Replacement of Hydraulic Pressure Line, No. 45, 15-April-1948
Adjusting of Carburetor Idle Mixture and Checking Fuel Shut-Off Valve to Preclude Fuel Pressure Loss, No. 43, 15-April-1948
Navion Starter Status, No. 42, 16-April-1948
Fuel System - NAV4-2 Through NAV4-1110, Fuel Pump Inlet Lines Relocation & Engine Fuel Pump Replacement, No. 41, 16-Mar-1948
Navion Field Service Bulletin Warranty, No. 40, 16-Mar-1948
Rigging Nose Gear Actuating Linkage, No. 39, 16-Mar-1948
Navion Field Service Bulletin No. 23 C.A.A. A.D. Mandatory Note 47-31-2, No. 38, 8-Mar-1948
Cabin Heaters - South Wind Model 977-B, No. 37, 23-Feb-1948
Nose Wheel Shimmy, No. 36, 20-Feb-1948
Cabin Air Exit. No. 35, 20-Feb-1948
Wrinkling of Fuselage Skin Near Lower Longeron at Fuselage Station No. 93.438, No. 34, 6-Feb-1948
Proposed C.A.A. Airworthiness Directive Note for Navion Eqipped with Hartzell Propellers, No. 33, 28-Jan-1948
Clip added to Hydraulic Line, No. 145-58801-58, No. 32, 19-Jan-1948
Cancellation of Navion Service Bulletin No. 22, No. 31, 12-Dec-1947
C.A.A. Airworthiness Directive No. AD-782-4, Mandatory Note 13, Dated 1-Oct-1947, No. 30, 28-Nov-1947
Hartzell Propeller Servicing, No. 28, 3-June-1947
Hartzell Piston Cylinder Installation Precautions, No. 26,15-May-1947
Etching A Preparation for Painting, No. 24, 5-May-1947
Oil Separator and Hydraulic Tank Vent Lines, No. 22, 22-April-1947
Flap Control Poppet Valve Replacement, No. 20,8-April-1947
Inspection of General Electric Radio Power Pack Attaching Screws, No. 15, 21-Mar-1947
Service Manuals Class C Equipment, No. 13, 21-Mar-1947
Engine Starter Adjustment, No. 11, 17-Mar-1947
Hartzell Propeller Blade Pitch Change Correction, No. 10, 4-Mar-1947
Starter Pedal Reinforcement Bracket, No. 9, 11-Mar-1947
Cabin Heater Thermostat Switch Cam Adjustment, No. 8, 31-Mar-1947
Low Fuel Pressure, No. 7, 16-May-1947
Leaking Hydraulic Pressure Relief Valve Repair, No. 6, 26-Feb-1947
Nose Wheel Vibration, No. 3,16-May-1947
Adjustment of Solenoid Operated Delco-Remy Starter Linkage, No. 63, 3-Jan-1950
Expiration of Part Exchange Offer in Field Service Bulletin No. 4, No. 64, 5-Jan-1950
Installation of South Wind Heater in 1949 Model Navions, No. 65, 20-Jan-1950
Time Extension for Field Service Bulletin No. 4, No. 66, 23-Jan-1950
Inspection - Carburetor Hot Air Duct, Part No. 145-42202, No. 67, 7-Feb-1950
Navion Service Bulletins:
Navion Fuel System ( Carter Diaphragm Pumps), No. 7, 15-Feb-1949
Fuel Accumulator Tank Sump Fitting Inspection and Rework, No. 7, 19-Nov-1946
Inspection of Main Landing Gear Housings (Axle Forging), No. 6, 18-Jan-1949
Modification of Propeller Counterweights, No. 5- Mandatory, 3-Jan-1949
Inspection of Nose Gear Retracting Drag Link, No. 4 Revision A, 5-Aug-1949
Inspection of Nose Gear Retracting Drag Link, No. 4 Mandatory, 1-Oct-1948
Nose Gear Drag Brace Attaching Structure Reinforcement, No. 3, 10-June-1948
Nose Gear Drag Brace Attaching Structure Reinforcement, No. 3, 20-May-1948
Nose Gear Extension Restrictor, No. 2, 22-Mar-1948
Nose Gear Inner Cylinder Bearing Retainer Nut, No. 1, 1-Nov-1947
North American Aviation Navion Service Bulletins:
You'll notice that all the North American Aviation Service Bulletins in this section are the earliest dated in this post - these were published prior to NAA selling the Navion. You'll also see a slight variation in the logo with the "NA" in Navion highlighted in larger letters.
Nose Wheel Valve Stem Clearance, No. 12, 27-Nov-1946
Exhaust Tail Pipe Weld Rework, No. 9, 19-Nov-1946
Crankcase Breather Line Rework, No. 6, 14-Nov-1946
Propeller Control Replacement, No. 5, 1-Nov-1946
Landing Gear Up-Lock Control Rework, No. 4, 29-Oct-1946
Fuel Filler Drain Installation, No. 2, 6-Dec-1946
Temporary Removal of Hydraulic Power System, No. 1, 8-Oct-1946