| 
Gulfstream
Jet Prop Commander 1000 (695A)
The Gulfstream Jet Prop Commander 1000 (AC-695A) is a stable high-wing, pressurized, twin-engine turboprop aircraft that is suitable for a variety of missions. Standard configuration allows for mission equipment, two pilots and one observer.
However, the aircraft can be configured for two scientists/observers and mission equipment in the cabin. NOAA’s AC-695A Jet Prop Commander is typically utilized by the National Weather Service (NWS) National Operational Hydrologic Remote Sensing Center (NOHRSC).
National Operational Hydrologic Remote Sensing Center
Snow Survey Platform
The AC-695A jet prop commander aircraft is used by the National Operational Hydrologic Remote Sensing Center (NOHRSC) to conduct aerial snow survey operations in the snow-affected regions of the United States and Canada. During the snow season (Oct May), snow water equivalent measurements are gathered over a number of the 2000+ pre-surveyed flight lines using a gamma radiation detection system mounted in the cabin of the aircraft. During survey flights, this system is flown at 500 feet above the ground at ground speeds ranging between 100 and 120 knots. Gamma radiation emitted from trace elements of potassium, uranium and thorium radioisotopes in the upper 20 cm of soil is attenuated by soil moisture and water mass in the snow cover. Through careful analysis, differences between airborne radiation measurements made over bare ground is compared to that of snow-covered ground. The radiation differences are corrected for airmass attenuation and extraneous gamma contamination from cosmic sources. Airmass correction is accomplished using output from precision radar altimeter and pressure sensors mounted on and within the aircraft. Output from the snow survey system results in a mean areal snow water equivalent value within +/- one cm. Information collected during snow survey missions, along with photographic data, is used by the National Weather Service (NWS), River Forecasting Centers (RFCs) and other agencies to forecast river levels, water flow, and potential flooding events due to snowmelt water runoff.
Further information regarding the snow survey program can be obtained by accessing the National Operational Hydrologic Remote Sensing Center website at
http://www.nohrsc.noaa.gov.
AIRCRAFT SPECIFICATIONS
| Type: |
Jet Prop Commander AC-695A |
| Engines: |
Garrett TPE-331-10 (turboprop) 800 HP/each |
| Crew: |
2 Pilots and 1 Observer (as needed) |
| Ceiling: |
35,000 feet (pressurized) |
| Rate of Climb: |
2,800 feet/minute |
| Operational Airspeeds: |
120-250 knots |
| Electrical: |
Two 30 volt 300 ampere starter-generators, Two 24 volt lead acid batteries |
| Scientific Power: |
115V AC, 60 Hz |
| Max. Gross Weight: |
11,250 lbs Empty Weight: 7,300 lbs |
| Useful Load: |
3,950 lbs (fuel, personnel, cargo) Fuel Load 3,175 lbs |
| Type Fuel: |
Jet A
Standard Fuel Burn |
| Maximum Cruise Speed: |
600 lbs/hr Normal Cruise Speed – 500 lbs/hr
Fuel Burn varies with mission configuration and environmental conditions. |
| Range: |
(max. cruise) - 1750 nm Range (normal cruise) - 1950 nm |
| Duration: |
(max. cruise) - 5 hr Duration (normal cruise) - 6 hr |
| Max Cruise Range: |
(w/reserves) - 1500 nm |
| Normal Cruise Range: |
(w/reserves) – 1700 nm |
| Dimensions Wing Span: |
52 ft Total Length – 43 ft |
External |
| Fuselage Height: |
5 ft 7 in Tail Height – 14 ft 11.5 in |
| Cabin Doors: |
47 in x 26 in |
| Baggage Doors: |
31.25 in x 19.75 in |
Internal |
| Cabin Length: |
17 ft 5 in |
| Cabin Height: |
4 ft 9 in |
| Cabin Width: |
4 ft 2 in |
| Useable Volumes Cabin: |
278 cu ft |
| Baggage Compartment: |
46 cu ft |
Additional Standard Equipment
| Cockpit |
Meggitt Magic (Meggitt Advanced Generation Integrated Cockpit) System with all digital Primary Flight Display, Navigation Display, Engine Display Unit,
and Air Data Attitude Heading Reference System; Terrain Awareness and Warning System (TAWS), Traffic Alert/Collision Avoidance System (TCAS), Radar, real-time weather data capable Bendix/King 850 Multi-Function Display and a 7-inch VGA compatible mission monitor wired to the cabin mission panel. |
| Cabin |
Mission panel for A/C power, RS232 outputs for pressure altitude and radar altimeter, keyboard/mouse and monitor connections to cockpit display.
Aircraft is equipped with lavatory. |
|
