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SINGLE-ENGINE PISTON

Diamond DA20

One model from FAA type certificate data sheet TA4CH. Every figure below is quoted from the sheet. Open any “Source” to see the words it comes from.

THE DATA SHEET

Authority
Federal Aviation Administration (United States)
Sheet
Type Certificate Data Sheet TA4CH
Revision
17
Date
August 30, 2021
Holder
Diamond Aircraft Industries Inc.
Licence
US Government work, public domain (17 U.S.C. 105)

Open the sheet on the FAA Dynamic Regulatory System (opens in a new tab)

Performance figures (stall speeds, take-off and landing distances, climb, cruise and fuel burn) are in the aircraft's flight manual (POH/AFM), which we cannot reproduce. Always use the flight manual for the aircraft you fly.

This is a United States Federal Aviation Administration sheet. We show it as a US certification document, not as an Australian or New Zealand rule. Units are the sheet's own: pounds, US gallons and quarts, and knots or mph as stated.

How we copied the sheet. Quotes are from our stored text copy of the sheet, taken from the text layer of the FAA's online viewer. We rebuilt lines from the text positions, joined wrapped lines, marked wide gaps between table cells with |, removed page headers and footers, and replaced symbol-font characters with the symbols they print as. Check the original sheet before relying on any figure.

Models not shown. The sheet also covers the DA20-A1. Its power and maximum weight depend on which of its Rotax engines is fitted, so we have not added it.

SPEC SHEET

Diamond DA20: DA20-C1

The sheet's heading for this modelModel DA20-C1 (Utility Category)

Source for the model heading

II - Model DA20-C1 (Utility Category) Approved April 6, 1998

Compare the DA20-C1 with another aircraft

Engine

Engine
Continental Motors IO-240-B
Source for Engine

Engine | Continental Motors IO-240-B

Rated power
125 hp
Source for Rated power

Engine Limits | Maximum Continuous Power 2800 r.p.m. (125 hp)

Engine speed limit
2,800 rpm
Source for Engine speed limit

Engine Limits | Maximum Continuous Power 2800 r.p.m. (125 hp)

Propeller
Hoffmann HO-14HM-175-157The sheet also lists Sensenich propellers.
Source for Propeller

Propeller Limits | 1. Hoffmann HO-14HM-175-157

Fuel and oil

Fuel capacity
24.5 US galS/N C0014 and later, or with SB DA C1-28-01≈ 92.7 L (converted)The sheet lists other tanks for other serial numbers.
Source for Fuel capacity

S/N C0014 and subsequent, and S/N C0001 thru C0013 if Service Bulletin DA C1-28-01 has been incorporated: 24.5 gal (93 liters) at +32.44 in (+824 mm) Usable: 24 gal (91 liters) (See Note 1)

Usable fuel
24 US galS/N C0014 and later, or with SB DA C1-28-01≈ 90.8 L (converted)
Source for Usable fuel

S/N C0014 and subsequent, and S/N C0001 thru C0013 if Service Bulletin DA C1-28-01 has been incorporated: 24.5 gal (93 liters) at +32.44 in (+824 mm) Usable: 24 gal (91 liters) (See Note 1)

Oil capacity
6 US qtmaximum≈ 5.7 L (converted)
Source for Oil capacity

Oil Capacity | 6 qt (5.68 liters) maximum, 4 qt (3.79 liters) minimum at -39.6 in (-1005 mm)

Weights and loading

Maximum weight
Utility category1,764 lbtake-off≈ 800 kg (converted)
Source for Maximum weight, Utility category

Take-off | 1764 lbs (800 kg)

Seats
2
Source for Seats

No. of Seats | Two at +5.6 in (+143 mm)

Baggage limit
44 lbonly with the baggage harness≈ 20 kg (converted)
Source for Baggage limit

Maximum Baggage 44 lbs (20 kg) at +32.44 in (+824 mm). Only permissible with baggage harness

C.G. range
+8.07 in to +12.16 in at 1764 lb; +7.95 in to +12.48 in at 1653 lb or less, varying linearly between
Source for C.G. range

C.G. Range | +8.07 in to +12.16 in (+205 mm to +309 mm) at 1764 lbs (800 kg) +7.95 in to +12.48 in (+202 mm to +317 mm) at 1653 lbs (750 kg) or less

Airspeed limits

Never exceed speed (Vne)
158.7 kt CAS
Source for Never exceed speed (Vne)

Airspeed Limits | Vne | Never Exceed Speed | 158.7 KCAS

Maximum structural cruising speed (Vno)
117.7 kt CAS
Source for Maximum structural cruising speed (Vno)

Vno | Maximum Structural Cruising Speed | 117.7 KCAS

Manoeuvring speed (Va)
106.9 kt CAS
Source for Manoeuvring speed (Va)

V A | Maneuvering Speed | 106.9 KCAS

Maximum flap extended speed (Vfe)
take-off flap100 kt CAS
Source for Maximum flap extended speed (Vfe), take-off flap

Take-off position (15o) | 100 KCAS

landing flap81 kt CAS
Source for Maximum flap extended speed (Vfe), landing flap

Landing position (45o) | 81 KCAS

Reference

Datum
Tangent to the leading edge of the wing at the root rib
Source for Datum

Reference Datum | The reference datum (RD) for the center of gravity (CG) is tangent to the leading edge of the wing at the root rib.

Data pertinent to all models: reference datum. FAA Type Certificate Data Sheet TA4CH, revision 17. This part of the sheet covers several models. Open the sheet (opens in a new tab)
Certification basis
FAR 21.29 and FAR 23 effective February 1, 1965, as amended by 23-1 through 23-42, with JAR-VLA used as a safety equivalence
Source for Certification basis

FAR 21.29 and FAR 23 effective February 1, 1965, as amended by 23-1 through 23-42. JAR-VLA effective April 26, 1990, through Amendment VLA/92/1 effective January 1, 1992, used as a safety equivalence to FAR 23

Data pertinent to all models: certification basis. FAA Type Certificate Data Sheet TA4CH, revision 17. This part of the sheet covers several models. Open the sheet (opens in a new tab)

COCKPIT

The DA20-C1 limits on an airspeed indicator

Where the sheet gives them in knots, the dial shows Vne as a red line, the caution range from Vno to Vne as a yellow arc, a green tick at Vno and white ticks at the flap limit speeds (Vfe). The sheet gives flap limits, not instrument markings, and the stall speeds where the green and white arcs start are not in it.

PANEL LAYOUT

Classic six-pack

These are example panels drawn by us. They do not show the panel fitted to any Diamond DA20. Only the airspeed markings come from this model's data sheet.

  • 406080100120140160180VfeVfeVnoAIRSPEEDKNOTSAirspeed indicator
  • 2020101010102020Attitude indicator
  • 01234567891013hPaALTFEETAltimeter
  • LRTURN COORDINATOR2 MINNO PITCH INFORMATIONTurn coordinator
  • N36E1215S2124W3033Heading indicator
  • 0.5.5111.51.522UPDOWNVERTICAL SPEED1000 FT/MINVertical speed indicator
  • 05101520253035RPM×100Tachometer
  • 075150OIL°COil temperature
  • 060120OILPSIOil pressure
  • EEFFLRFUELFuel quantity
  • 0510SUCTIONin HgSuction gauge
0 kt

What the dial shows

  • Red line: never exceed speed (Vne)158.7 kt CAS
    Source for the red line

    Airspeed Limits | Vne | Never Exceed Speed | 158.7 KCAS

  • Yellow arc: caution rangeFrom Vno to Vne, 117.7 kt CAS to 158.7 kt CAS
  • Green tick: Vno, top of the green arc117.7 kt CAS
    Source for the green tick

    Vno | Maximum Structural Cruising Speed | 117.7 KCAS

  • White tick: Vfe, take-off flap, a flap limit speed100 kt CAS
    Source for the white tick, take-off flap

    Take-off position (15o) | 100 KCAS

  • White tick: Vfe, landing flap, a flap limit speed81 kt CAS
    Source for the white tick, landing flap

    Landing position (45o) | 81 KCAS

  • Marks are drawn at the sheet's speeds in knots CAS. Some airspeed indicators are marked in IAS instead, so check the flight manual for how this aircraft's own indicator is marked.
  • White ticks mark the flap limit speeds (Vfe) the sheet gives. The sheet gives flap limits, not instrument markings, so the flight manual says where this aircraft's white arc ends.
  • The low ends of the white and green arcs are stall speeds. They come from the flight manual, so we have left them unmarked.

The other instruments are drawn at rest and are not linked to this aircraft. Learn what each instrument shows in the cockpit explorer.

For learning only. Not for flight planning or use in flight. Figures are certification limits from Federal Aviation Administration, Type Certificate Data Sheet TA4CH, Revision 17, retrieved 31 October 2026. Conversions marked “converted” are our own arithmetic. No manufacturer images are used. The instruments are drawn by us. Back to all aircraft.