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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.

SB Number

Subject

Date

Issued By

​

No. 18
No. 20
No. 23
No. 26
No. 30
No. 31
No. 32
No. 33
No. 36
No. 04
No. 05
No. 08
No. 09
No. 12
No. 16
No. 18
No. 19
No. 21
No. 22
No. 23
No. 101A
No. 102A
No. 103A
No. 106A
No.107
No. 108R1
​No. 109


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,  201
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MANDATORY SERVICE LETTERS
​​

Service Letter

Subject

Date

Issued By

No. 78
No. 81
No. 85
No. 87
No. 88
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
 
March 31, 1961
January 07, 1964
February 20, 1965
February 20,1965
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SB Number

Subject

Date

Issued By

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

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Sierra Hotel Aero
Sierra Hotel Aero
Sierra Hotel Aero

Location

We are located at historic Fleming Field, in South Saint Paul, Minnesota. 

"The South St. Paul Municipal Airport – Fleming Field is publicly owned and operated by the City of South St. Paul. Fleming Field is located in Dakota County. 
The South St. Paul Municipal Airport – Fleming Field has one runway. Runway 16/34 is 4,002 feet in length and is 100 feet wide."

Contact Us

Sierra Hotel Aero
1690 Aeronca Lane
Fleming Field KSGS
South St Paul, MN 55075
Phone : 651-306-1456
Email: info@navion.com
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