Standard Airspeeds

Standard Airspeeds

These airspeed indicators have unrestrained movements.These instruments are actuated by ram air and ambient atmospheric pressure obtained from the aircraft pitot and static pressure systems. A moveable pointer and a fixed dial indicate airspeed with the zero index at the 12 o??lock position. Temperature compensation is internal and there is no external zero adjustment. Pointer damping is internally adjustable.

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  • Options
  • EA5171 Specs
  • EA5172 Specs
  • EA5173 Specs
Physical Characteristics
Dial 1
EA5171 front view
EA5171 rear view
General
Height:
3.25"
Width:
3.25"
Depth:
2.00"
Weight:
0.6 0.1 lbs.
Nomenclature:
Matte white
Dial Face:
Flat black
Typical Range (see Note 3)
Outer: 40 to 200 MPH
Inner: 40 to 170 Knots
Range Markings (see Note 3)
White Arc:
0.06" wide
Green Arc:
0.12" wide
Yellow Arc:
0.12" wide
Red Line:
0.06" x 0.275"
Notes:
  1. Designed to meet the requirements of FAA TSO-C2b for a Type I instrument.
  2. Internally lighted models available (see options).
  3. Customer specified range and markings.
Dials Available
Dial 2 Dial 3 Dial 4
EA5171 dial 2
EA5171 dial 3
EA5171 dial 4
Outer:
40 to 180 MPH
Inner:
40 to 155 Knots
35 to 175 Knots
Outer: 40 to 170 Knots
Inner: 40 to 200 MPH
Environmental Characteristics
Temperature: -30 to 50 C
Vibration: ?
- CPS: 5 to 50
- Maximum Double Amplitude: 0.020 in.
- Maximum Acceleration: 1.5 G's
Humidity: 0% to 95% at 32 C
Altitude: 0 to 40,000 ft.
Physical Characteristics
Dial 1
EA5173 front view
EA5173 rear view
General
Height:
3.25"
Width:
3.25"
Depth:
2.00"
Weight:
0.6 0.1 lbs.
Nomenclature:
Matte white
Dial Face:
Flat black
Typical Range (see Note 3)
Outer: 40 to 260 Knots
Inner: 40 to 300 MPH
Range Markings (see Note 3)
White Arc:
0.06" wide
Green Arc:
0.12" wide
Yellow Arc:
0.12" wide
Red Line:
0.06" x 0.275"
Notes:
  1. Designed to meet the requirements of FAA TSO-C2b for a Type I instrument.
  2. Internally lighted models available (see options).
  3. Customer specified range and markings.
Dials Available
Dial 2
Dial 3
Dial 4
EA5173 dial 2
EA5173 dial 3
EA5173 dial 4
40 to 300 MPH
40 to 260 Knots
Outer:
40 to 300 MPH
Inner:
40 to 260 Knots
Environmental Characteristics
Temperature: -30 to 50 C
Vibration: ?
- CPS: 5 to 50
- Maximum Double Amplitude: 0.020 in.
- Maximum Acceleration: 1.5 G's
Humidity: 0% to 95% at 32 C
Altitude: 0 to 40,000 ft.