Home » Airborne Platforms » NOAA DeHavilland Twin Otter (DHC-6) (4 aircraft)
NOAA DeHavilland Twin Otter (DHC-6) (4 aircraft)
Generally NOAA-mission specific projects. Project schedules http://www.aoc.noaa.gov/projects.htm. Reimbursable projects considered as schedules allow.
While NOAA programs are usually planned three years in advance, requests for the use of these aircraft can be made anytime. Requests for aircraft time should be submitted on NOAA Form 56-48 which can be found at: http://www.omao.noaa.gov/fleettimereq.html Instructions for its completion and submission are also located at this website. Any questions regarding this procedure can be addressed to the Chief, Programs, AOC at 813-828-3310 x3076
Airborne Platforms
The DeHavilland Twin Otter (DHC-6) is a highly maneuverable, high-winged, unpressurized, twin-engine turboprop aircraft which can be flown slowly (80-160 knots) and in tight circles.
Dr. James McFadden
NOAA/Aircraft Operations Center
P.O. Box 6829 MacDill AFB, FL 33608-0829
(813) 828-3310 X 3076
Aircraft TypeDe Havilland DHC-6 Twin Otter, Series 300
Payload4,400 lbs. (fuel, personnel, cargo)
RangeNormal config: 560 nm - Auxiliary Fuel Tank Installed: 780 nm
Ceiling12,500 feet (without supplemental cabin oxygen) - 25,000 feet (with supplemental cabin oxygen)
EnduranceNormal config: 5 hrs - Auxiliary Fuel Tank Installed + wing tip tanks: 8 hrs
Airspeed Range80-160 knots
Runway Requirements
Max Takeoff Weight12,500 lbs.
Max Fuel Weight2,500 lbs. with additional 1,000 lbs. in optional cabin auxiliary tank
Flight Crew2
Number of Seats6
Airworthiness Certificatepublic
Typical Usesthis platform has conducted low-level slow speed aerial surveys of marine mammals, aerial video surveys of coastal erosion, various remote sensing missions, atmospheric air chemistry sampling, and atmospheric eddy flux and concentration gradient assessmen
Data Systemuser supplied
Special Field Support Needs
Research Power3 KVA of 115 VAC, 60 Hz and 70 A of 28 VDC
Cabin Environmentunpressurized
Rack Space Available19" rack
Available InletsDye marker drop tube is removable.
Available AperturesVarious camera mounts are available from the NOAA AOC for nose and belly camera ports.
Available Hard Points
External Podsnone
Standard InstrumentsWeather radar, radar altimeter, dual GPS/Loran-C navigation system, HF radio
Training Requirementsclass 3 medical
Available InstrumentsA variety of air chemistry, lidar, photogrammetry and marine mammal surveys are flown on the aircraft. Modifications have been made to the Twin Otter to measure eddy fluxes and concentration gradients through the atmospheric mixed layer.
Other SystemsWhen the Mobile Flux System is fully deployed, the fast response temperature, water vapor, and carbon dioxide sensors in conjunction with the global positioning system, provide routine data on vertical eddy fluxes of temperature, water, and carbon dioxide can be extracted. Other implementations includes air temperature, dew point, pressure, three dimensional winds, and radiation state-variable instruments. The platform can also acquire air chemistry data, such as NO, NOx, Noy, SO2, O3, CO, and reactive hydrocarbons, using a flow-through air inlet system with instruments situated in equipment racks. The acquisition system is computer-based with four display monitors mounted throughout the aircraft allowing in-flight interactions by scientific users.
User Support
Aircraft characteristics are documented at http://www.aoc.noaa.gov/aircraft_otter.htm
The twin otter has been modified to be a "Mobile Flux Platform". Further information can be found at the NOAA ARL website at http://www.oar.noaa.gov/ERL/ARL/welcome.html
19 Oct 2009 13:09