MANDATORY SERVICE BULLETINS
Notice of clarification to SB 106 A: Section 3 (e) and (f)-Bore size measurement applies to brass style valves only. This measurement is to help distinguish between brass valves that were originally approved under the Navion type design and valves that were not.
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Service Bulletin 101A and Service Bulletin 106 A are FAA approved data.
Navion Maintenance Alert - Nose Gear Fork
Service Letter 89 - Landing Gear Inspection
To view the following Mandatory SB's click the applicable No.
Navion Maintenance Alert - Nose Gear Fork
Service Letter 89 - Landing Gear Inspection
To view the following Mandatory SB's click the applicable No.
SB Number |
Subject |
Date |
Issued By
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Generator Terminal Insulator Installation
Hartzell No. 8628 Prop Blade Tip Rework Carburetor Vapor Return Line Hose Controlled Hydraulic Power Sys Install Hartzell Propeller Piston Guide Pin Engine Mount Front Frame Reinforcement Fuel Strainer Drain Cock Replacement Elevator Leading Edge Rib Installation Fuel Pump Inlet lines Relocation Inspect Nose Gear Retract Drag Link Propeller Counterweights End Fitting-Hyd Power and Control Inspect Shakespeare Throttle Control Improved Cabin Seating Carburetor Air Duct Change Aileron Control Chain Jamming Inspection, Stabilizer Front Attach Ftg Relative Motion Between Fuselage/Wings Cracks in fuselage frame STA 294.1 Inspect Rear Wing Spar Junction Ftg Fuel System - Fuel Selector Valve Airframe - Engine Mount Airframe - Fuselage Reinforcing Kit Fuel System Inspection Auxiliary Fuel system placarding Cabin Air Valve Housing Support Frame Assembly Station 311.07 Inspection |
Feb. 14, 1947
Jan. 28, 1947 April 11, 1947 April 01, 1947 May 05, 1947 May 09, 1947 May 01, 1947 July 02, 1947 March 15, 1948 Aug. 05, 1949 Jan. 03, 1949 July 11, 1949 Sept. 01, 1950 Feb. 01, 1951 Feb. 12, 1952 Sept. 26, 1952 Feb. 16, 1953 Aug. 05, 1954 Nov. 16, 1954 Dec. 05, 1955 Aug. 23, 2005 July 13, 2004 July 17, 2009 May 01, 2007 June 08, 2012 Nov. 19, 2013 Sept. 16, 2013 |
North American Aviation
North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Ryan Aeronautical Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero |
MANDATORY SERVICE LETTERS
Service Letter |
Subject |
Date |
Issued By |
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Fuel Accumulator Tank - Replacement
P/N 145-58145-3 End Fitting Hyd Pwr/Ctrl Loose Rivets - Wing Skin/Stringer Fuel Accumulator Tank - Replacement Wing Closure Strip - Inspection Usage of 6.50-8 6-Ply Main Landing Gear Tire. |
March 31, 1961 January 07, 1964 February 20, 1965 February 20,1965 June 14, 2023 |
Navion
Navion Navion Navion Navion Sierra Hotel Aero |
SB Number |
Subject |
Date |
Issued By |
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No. 01
No. 02 No. 03 No. 04 No. 05 No. 06 No. 07 No. 08 No. 09 No. 10 No. 11 No. 12 No. 13 No. 14 No. 15 No. 16 No. 17 No. 18 No. 19 No. 20 No. 21 No. 22 No. 23 No. 24 No. 25 No. 26 No. 27 No. 28 No. 29 No. 30 No. 31 No. 32 No. 33 No. 34 No. 35 No. 36 No 01 No. 02 No. 03 No. 04 No. 05 No. 06 No. 07 No. 08 No. 09 No. 10 No. 11 No. 12 No. 13 No. 14 No. 15 No. 16 No. 17 No. 18 No. 19 No. 20 No. 21 No. 22 No. 23 No. 24 No. 25 No. 33 No. 34 No. 37 No. 66 No. 101 No. 102 No. 103 |
Temporary Removal of Hyd Pwr System
Fuel Filler Drain Installation Separate Hyd Relief valve Installation Landing Gear Up-Lock Control Rework Propeller Control Replacement Crankcase Breather Line Rework Fuel Accumulator Tank Sump Fitting PS-5C Carburetor Identification Exhaust Tail Pipe Weld Rework Baggage Compartment Placard Valve Spring Spacer Installation Nose Wheel Valve Stem Clearance Push Rod and Valve Rocker Modification Landing Gear Control Handle Lock Rescinded Oil Cooler Baffle Installation Carb Air Straightener Installation General Terminal Insulator Installation Nose Gear Actuating Cylinder Replace Hartzell No. 8628 Prop Blade Tip Rework Nose Gear Steering bellcrank Replace Brake Assemble Rework Carburetor Vapor Return Line Hose Temp Removal of Eng-Driven Hyd Pump Starter Engagement Mechanism Rework Controlled Hyd Pwr System Installation Starter Pedal Reinforcement Bracket Nose Gear Hyd Cylinder Line Replace Delco Remy Starting Motor Modification Hartzell Prop Piston Guide Pin Safety Engine Mount Front Frame Reinforce Fuel Strainer Drain Cock Replacement Elevator Leading Edge Rib Installation Rescinded Cabin Heater Fuel control Valve Inspect Fuel Pump Inlet Lines Relocation Nose Gear Inner Cyl Bearing Retainer Nose Gear Extension Restrictor Nose Gear Drag Brace Attaching Struc Insp Nose Gear Retract Drag Link Propeller/counterweights Insp of Main Landing Gear Housing Navion Fuel System End Fitting - Hyd Pwr and Ctrl Unit Shaft Inspect Shakespeare Throttle Control Hartzell Prop Control Unit Insp Throttle Act Lnd Gear Horn Switch Improved Cabin Seating Land Gear Retract Link Inspection Baggage Compartment Fuel Tank Carb Air Induction Sys Carb Air Duct Change Cracking of Stab Fwd Attach Fittings Aileron control Chain Jamming Inspect Stab Front Attach Fittings Increased Eng Cowl Flap Opening Relative Motion Between Fuse & Wing Cracks in Fuselage Frame Sta 294.1 Insp Rear Wing Junction Fittings Insp Forward Eng Mounts Insp Nose Gear Drag Links Repair Cracked Elevator Leading Edges Landing Gear Retract Link Insp Missing Rivets in the Rudder Beam Assy Instrument Panel Support Fuel System-Fuel Selector Valve Airframe Engine Mount Airframe Fuselage Reinforcing Kit |
Oct. 08, 1946
Dec. 06, 1946 Oct. 21, 1946 Oct. 29, 1946 Nov. 01, 1946 Nov. 14, 1946 Nov. 19, 1946 Nov. 27, 1946 Nov. 19, 1946 Dec. 06, 1946 Feb. 04, 1947 Nov. 27, 1946 Feb. 04, 1947 Jan. 02, 1947 Jan. 06, 1947 Jan. 16, 1947 Feb. 14, 1947 Jan. 23, 1947 Jan. 28, 1947 Jan. 23, 1947 Feb. 06, 1947 April 11, 1947 March 04, 1947 May 12 , 1947 April 01, 1947 March 26, 1946 April 03, 1947 April 15, 1947 May 05, 1947 May 09, 1947 May 01, 1947 July 02, 1947 June 17, 1947 March 15, 1948 Jan. 01 1947 March 22, 1948 May 20, 1948 Aug. 05, 1949 Jan. 03, 1949 Jan. 18, 1949 Feb. 15, 1949 July 11, 1949 Sept. 01, 1950 Dec. 29, 1950 Feb. 01, 1951 April 15, 1951 April 15, 1951 May 01, 1951 July 02, 1951 Feb. 12, 1952 Sept. 26, 1952 Sept. 26, 1952 Feb. 16, 1953 March 27, 1953 August 05, 1954 Nov. 15, 1954 Dec. 05, 1955 Dec. 05, 1955 Dec. 05, 1955 Nov. 01, 1947 Dec. 17, 1958 June 26, 1970 Nov. 21, 1966 June 24, 2004 July 13 2004 July 20, 2004 |
North American Aviation
North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation North American Aviation Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Ryan/NAI Sierra Hotel Aero Sierra Hotel Aero Sierra Hotel Aero |