MC Metal Concept


CT Supra Light








Operational Limitations

Noise level



Performance Data



The Flight Design C4
 New Four Place IFR equipped Certified Aircraft

The much anticipated Flight Design C4 program continues development in Europe.  The prototype is expected to begin flight test in the first half of 2013.

The Flight Design C4 is an all carbon composite four-place light aircraft based upon the advanced design of the popular Flight Design CT series of aircraft.  Key features are the new Continental IO-360AF Alternate Fuels engine, conceived to “future proof” the C4, an advanced glass panel cockpit and an integrated, full airplane parachute system. Flight Design has always designed its planes for excellent cross country performance and the C4 is planned to have up to a 1200 NM (2200km) Range.

Due in large part to the structural efficiency of carbon composites, the C4 will also provide true utility with a giant, easy to enter cabin and a very high useful load of 1320 Lbs(600kg).  As a part of the development process, mock ups of the airframe and interior cabin have been shown extensively for customer input on the ergonomic design. 

Flight Design has been very busy with recent developments including adding additional technical staff at the Flight Design Flight Test Center in Kamenz Germany, attaining EASA Design Organization Approval (DOA) and working to finish Production Organization Approval (POA).  These two approvals will allow Flight Design to develop and certify the C4 in a more rapid fashion which is key to keeping the target cost of the C4 completely equipped price of $250,000 (€ 220.000).       

The C4 will first be certified in Europe under ELA (European Light Aircraft Category) by EASA.  FAA certification is anticipated under reciprocity between these two leading regulatory agencies.  Flight Design has participated in the creation of ELA and is involved as well with the current Part 23 ARC review with contributions to the technical and regulatory committees.      

In order for the aggressive low price target of the C4 to be achieved, all major components of the aircraft must meet pre-determined functional and cost criteria.  The major cost drivers include the airframe, engine, avionics and certification.  Flight Design has extensive experience and understanding of the airframe and, as you know, our engine selection was made in late 2011 with the alternate fuel capable Continental IO-360-AF being chosen.  BRS Aerospace has been selected as the supplier of the integrated, full airplane parachute system (FAPS) for the C4 and during 2012, much progress has been made with our potential avionics partners in developing state-of-the-art capability and functionality while holding the line on cost.   We anticipate announcing our avionics partner soon. 

A full-scale exterior mock-up of the C4 was on display at major air shows and events in 2012.  While those who saw it were pleased and excited, many were keen to also know what the cockpit and cabin would be like.  Responding to this request, Flight Design showed a new interior mock-up of the C4 at AERO Friedrichshafen, Sun n Fun, EAA AirVenture in Oshkosh and most recently at the AOPA Summit in Palm Springs, CA.  The response has been resoundingly positive as more and more people realize how much room the C4 will have for 4 full-sized adults and marvel at the large, coach-style double-door on the left side, providing easy entry and exit to both the front and rear seats while also able to easily accommodate large and bulky cargo.  For a better idea of the beauty and innovation of this great design, please click on the pictures below and download the latest C4 brochure.  

Early Bird delivery positions are still available and you may secure one with a refundable $7000 deposit that will save you $10,000. This program will end with the prototype flight test.

The most recent photographs of C4 full scale and the Interior mock-up:


C4  » Structure/Undercarriage

All–composite sandwich structure (Carbon / Aramide / Glass)
One–piece, fully–cantilevered wing
Single–beam composite main landing gear
Main wheel size 6.00 – 6’’, nose wheel 4.00 – 6’’
Hydraulic disc brakes
Directly steerable nose wheel

C4 Aircraft » Engine/Propeller


— Engines
Gasoline Engine:
• Continental IO-360-AF (Alternative Fuels)
• 6–cylinder, 180 HP @ 2,550 RPM, fuel–injected, low–compression, naturally–aspirated
• Capable of operating on both 100LL avgas and lower octane alternative fuels
• 2,000 hour TBO, fuel consumption: 7-10 GPH (26.5 – 38.0 l/hr) depending on power setting
Diesel Engine: (Supplier partner to be decided)
• Turbocharged
• 155 – 180 HP @ 2300-2400 RPM
• Fuel: Jet–A, 7.9 gal/hr (30 l/hr) @ max power; 5.9 gal/hr (22.5 l/hr) @ 75% power
• Single–Lever Operation
— Propeller
Three–blade, constant speed propeller; natural composite propeller blades


C4 Aircraft » Cabin

Front seats individually adjustable in length / height (coupled), entire seat can be inclined. Rear seat as bench with two individually shaped seat cushions. Rear seatback folds forward for access to baggage area. Rear seat with ISOFIX child seat attachments.

Cabin doors left / right front seats (hinged front, opening forward), plus left–side rear cabin door (hinged aft, opening rearward), creating an unobstructed, large opening on left side of cabin.
Access to luggage compartment through rear seat bench, or through luggage door in right side of fuselag


C4 Aircraft » Cockpit/equipment

Instrumentation / Cockpit:

Glass Cockpit — Standard (details and specific supplier partner in planning):
• Dual 10” displays
• Full–function (PFD, MFD, GPS, Nav/Com, Weather, Traffic, Terrain, Synthetic Vision)
• Autopilot — Coupled (optional)
Optional Equipment:
Glider / banner towing system
Float option possible in future
Icing protection under consideration (details in planning


C4 Aircraft » speed

Stall speed full flaps V0 (MTOM)  93 km/h 50 kts
Max cruise speed Vh 296 km/h 160 kts
Never exceed speed Vne 360 km/h 195 kts

Maximum Range and Endurance

AVGAS Engine:

Maximum range
1200 NM (2200 km)
… @ 65% power; 32 l/hr; 145 kt
Maximum endurance 10:00 hrs … @ 55% power; 26.5 l/hr
DIESEL Engine:
Maximum range
1700 NM (3150 km)
… @ 75% power; 22.5 l/hr; 145 kt
Maximum endurance                                               13:35 hrs  … @ 65% power; 19.5 l/hr

Climb rate:

at MTOW, MP, ISA 0m                                        5 m/s (984 ft/min)

Takeoff @ ISA 0, hard surface:
Takeoff roll                                                          400 m (1312 ft)
Takeoff distance                                                  650 m (2132 ft) to clear 15 m (50 ft) obstacle

C4 Aircraft » operational limits

VFR and IFR operation


C4 Aircraft » Safety


Three–point safety belts with inertia reel on each seat Seat belts with airbags optional Airframe Emergency Parachute installed as standard equipment Aircraft Specification

C4 Aircraft » Noise level

ICAO Annex 16 Chapter 10 less than 79.9 dB(A)

…complies with Landeplatz Lärmschutzverordnung (enhanced noise limits).

C4 Aircraft » certification

Initial certification by EASA (application filed in Q1 2011)

FAA certification by reciprocity of EASA certification

C4 Aircraft » Price

Price Indication Target: US $250,000 (€220.000 EURO excl. VAT) depending on equipment level.

C4 Aircraft » Performance data

Masses and Capacities:

Empty mass                                          600 kg (1320 lb) typical
MTOM                                                  1200 kg (2640 lb)
Seating Capacity                                   max. 130 kg (287 lb) per seat
Baggage                                               max. 75 kg (165 lb)
Fuel                                                     265 l (70 gal) total in both wings

Loading Examples: 

Average Cabin
Max Fuel Loading
High cabin loading AVGAS
High cabin loading Diesel
Low mass ops
Empty Aircraft Mass
600 kg
600 kg
600 kg
600 kg
600 kg
Occupants Mass
4 x 90 kg
= 360 kg
4 x 90 kg
= 360 kg
4 x 120 kg
= 480 kg
4 x 130 kg
= 520 kg
1 x 90 kg
Luggage Mass
4 x 15 kg
= 60 kg
4 x 4.25 kg
= 17 kg
4 x 18.75 kg
= 75 kg
4 x 18.75 kg
= 75 kg
0 kg
Fuel Mass
250 l AVGAS
= 180 kg
265 l Diesel
= 223 kg
62.5 l AVGAS
= 45 kg
54 l Diesel
= 45 kg
50 l Diesel
= 42 kg
6:25 hrs @ 75%
11:45 hrs
@ 75% power
(13:35 @ 65% power)
1:35 hrs
@ 75% power
2:25 hrs
@ 75% power
2:00 hrs
@ towing cycle
Operating Mass
1200 kg
1200 kg
1200 kg
1200 kg
732 kg







- MC/Metal Concept
- CTSL Supra light
- C4

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