Model TSC-1A1 Teal Specifications

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The Model TSC-1A1 Teal amphibian has been developed to provide extended range and increased useful load compared to the Model TSC-1A.  This has been done by adding 23 US gallon fuel tanks to each wing leading edge between wing stations 36 - 72.  These tanks are located forward of the center of gravity.  Increased useful load capability has been provided by reviewing the airframe structure to permit a gross weight of 2 200 pounds.

The 2 200 pound gross has been limited to land operation; 2 100 pounds has been established as an upper gross limit for water operation to provide satisfactory performance characteristics as regards take off run and climb out of water areas surrounded by steep banks and hills.  These new gross weights exceed Model TSC-1A limits by 300 and 200 pounds respectively.

As a further option, the 24.5 US gal hull fuel tank may be retained with the wing tanks to provide a usable fuel capacity of 65 US gallons for longer range.

 

GENERAL

Manufacturer Thurston Aircraft Corporation
Address Sanford, Maine, USA
Model TSC-1A1 "Teal"
Seats 2 at +71"
  Certification Basis FAA FAR Part 23, 1 Feb 1965
Amendments 23-1 through 23-6
Approved Type Certificate No. A15EA
Approved 23 September 1971
Category 2PCAmM
Applicable Serial Numbers 16 thru 21, 23
Conversions: 1, 6, 8, 10, 14, 15
Fuel Capacity (total)
- Standard 2 x 23 US gal wing tanks 
- With optional 24.5 US gal hull tank

46 US gal (40.6 US gal usable)
70.5  US gal (64.6 gal usable)

DIMENSIONS

Length (Max)

23 ft 7 in
Height (Max Land) Over removable strobe light 9 ft 5 in
Over cowling 8 ft 11 in
Cabin Width (interior) x ft x in
Cabin Height (interior) x ft x in
Cabin Length (interior) x  ft x in
Baggage Compartment (volume) x cu ft
Draft Loaded 1 ft 2.5 in

LANDING GEAR

Main Gear Spring steel struts
Tread 8 ft 3 in
Base x ft x in
Landing Gear Travel ? in
Main Wheels 6.00 x 6
Inflate to 20 psi
Brakes x
Tail Wheel Scott Model 3200, 6.00 x 2.50
Inflate to 35 psi

WINGS

Airfoil Section  NACA 4415
Span 31 ft 11 in
Chord 5 ft 0 in
Aspect Ratio 6.50
Incidence 4
Dehedral 4
Total Area 157 sq ft
Aileron Total Area 10 sq ft

EMPENNAGE

Hor. Stabilizer Incidence -3
Tailplane Span 8 ft 0 in
Tailplane Chord 42 in
  Hor. Stabilizer Airfoil Section NACA 0010
Hor. Stabilizer Area 15.4 sq ft
Elevator Area 12.6 sq ft
  Fin Airfoil Section NACA 0010
Fin Area 10.1 sq ft
Dorsal Fin Area 1.9 sq ft
Rudder Area 6.8 sq ft

WEIGHTS

Gross - Land  2 200 lbs
Gross - Water 2 100 lbs
Empty ? lbs
Max. Baggage (at +96") 230 lbs
Max. Wing Loading 12.10 lbs/sq ft
Max. Power Loading 12.67 lbs/hp
  Datum Bow of airplane, hull stn. 0; 91.5 in forward of wing leading edge at side of hull.
  Center of Gravity Range
- Landing gear extended
+103.5 to +107.8 at 2 200 lbs
+103.1 to +108.4 at 2 100 lbs
+102.3 to +109.7 at 1 900 lbs or less
Moment change due to landing gear retraction; plus 860 in.lbs
  Center of Gravity Range - Empty Weight +110.2" to +112.7"

SURFACE MOVEMENTS

Rudder   28
Ailerons up +30, down -20
Elevators up +15, down -20
Elevator Tab up +7.5, down -21
Rudder Tab 30
Water Rudder 28

ENGINE

Manufacturer AVCO Lycoming
Address Williamsport, PA, USA
Model O-320-A3B
Approved Type Certificate No. E-274
Weight (dry) 244 lbs
Number of Cylinders 4
Rated Power 150 hp
Rated Speed (all operations) 2 700 rpm
Overspeed 3 200 rpm
Maximum speed (ground) 2 200 rpm
Reverse Propeller Speed N/A
Crankshaft Rotation Clockwise
Propeller Shaft Rotation Clockwise
Propeller to Crankshaft Ratio 1:1
Propeller Shaft Spline Size SAE 20
Cylinder Head Temperature Max. 500 F
Fuel Grade 80/87 Octane Nonleaded Aviation
Fuel Consumption (Cruise) 8.4 US gal/hr
Fuel Pressure Min. 0.5 psi, max. 8 psi
Compression Ratio 7.00:1
Piston Displacement 319.8 cu in
Bore 5.125 cu in
Stroke 3.875 cu in
Fuel Pump (Auxiliary) Bendix # 478630, 12 V
Carburetor Marvel-Schebler MA-4SPA
  Carburetor Setting 10-3678-32
Ignition Magnetos S4LN21, S4LN20 (Bendix/TCM)
Magneto Breaker Point Gap ?
Distributor Point Gap ?
Maximum Drop on Magneto or Distributor  ?  RPM
Ignition Timing 25 deg BTC
Firing Order 1-x-x-x
Spark Plugs Champion EM42E or eqv.
Spark Plug Gap .016" to .022"
Valve Clearance (lifter bled down, cold)    .?"
Starter ? Volt, x
Alternator (Prestolite ALE 8406) 12 Volt x 40 Ampere (60 Ampere opt.)
Battery Exide AC-78/M, 37 Ampere hours
Oil Temp (Max) 245 F (above 60 F ambient air)
 210 F (below 10 F ambient air)
Oil Temp (Normal) 100 - 180 F (ground)
160 - 180 F (in flight)
Oil Pressure (Start/Warmup) max. 100 psi
Oil Pressure (Normal) 60 - 90 psi
Oil Pressure (Idle Min) 25 psi
Oil Capacity 8 US qts
Oil Specifications (Above 40 F) SAE 40
Oil Specifications (Below 20 F) SAE 20
Max Time Between Oil Changes   ? hrs

PROPELLER

Model (Standard) Hartzell HC-C2YL-1B/7663-3 C/S
Blades 2 x metal
Diameter 72 in
Pitch +12 (low) to +27.5 (high)
Governor Hartzell F-2-6A

PERFORMANCE

Max Structural Cruise Speed (Vno) 97 mph / 84 kts
Design Maneuvering Speed (Va) 97 mph / 84 kts
Never Exceed Speed (Vne) 123 mph / 107 kts
Max Gear Extended Speed (Vle) 123 mph / 107 kts
Max Ldg. Gear Operation (Vlo) 100 mph / 87 kts
  Max side windows open 110 mph / 96 kts
Cruise Speed (Vc) @ 75% pwr ?
Best Range Speed (Vbr) ?
Best Endurance Speed (Vbe) ?
Best Climb Angle Speed (Vx) ?
Best Rate of Climb Speed (Vy) 70 mph
Rate of Climb (Sea Level)   600 ft/min
Approach Speed (Vref) 70 mph
Best Power-Off Glide Speed (Vbg) 75 mph
Minimum Descent Speed (Vmd) ?
Stalling Speed (Vs0) @ 2 200 lbs 58 mph
Stalling Speed (Vs1) @ 1 570 lbs 49 mph
Service Ceiling 12 000 ft
Range at Cruising 75% PWR @ 7500 ft
   (45 min reserve)
470 miles w/46 US gal
750 miles w/70.5 US gal
Take-off Distance - Land 650 ft
Take-off Distance - Water 1 050 ft
Landing Run - Land ? ft
Landing Run - Water ? ft
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Updated: 2017-01-01

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