dChan
Anonymous ID: c0c79f Dec. 17, 2018, 9:15 a.m. No.4347675   🗄️.is 🔗kun   >>7727 >>8082 >>8285 >>8322

>>4347640

This is a DHC UV-18B Twin Otter. Info on it:

''The UV-18A 'Twin Otter' is the military version of the DeHavilland DHC-6 with optional float and ski fittings. The aircraft have crew and passenger oxygen systems and a navigation/communication package which gives it an all-weather capability. It has a cruise speed of 150 knots, a service ceiling of 25,000 feet and a range of 700 miles. Designed to replace DHC-3, DHC-6 made its first flight on May 20, 1965. This general-purposed civil and military transport, used by regional airlines in Alaska and other areas with short or rough runways, entered production early in 1966. By September 1982, over 800 DHC-6 were built, and by the end of production in 1988 a total of 844 aircraft were built for various military and commercial customers.

 

Airlift support for the US Air Force Academy cadet parachuting program is provided by three UV-18B aircraft which carry a pilot, copilot and up to 17 jumpers. These Twin Otters are the only three owned by the Air Force. In the MSAG Antenna Test and Evaluation conducted 25-31 August 1998 in Marina CA, the NPS/CIRPAS UV-18A Twin Otter provided the surrogate UAV function during a test and evaluation of the MSAG ITT Antenna under development by the Joint Projects Office. Imagery from the Twin Otter was received by the multi- source capable antenna based at the CIRPAS facility in Marina. In the Alaska Army National Guard the UV-18As have been replaced by the C-23B+. ''

Anonymous ID: c0c79f Dec. 17, 2018, 9:27 a.m. No.4347811   🗄️.is 🔗kun

>>4347767

The interesting things to me: Shown as US Army. Wiki states:

"UV-18B

Parachute training aircraft for the United States Air Force Academy. The United States Air Force Academy's 98th Flying Training Squadron maintains three UV-18s in its inventory as free-fall parachuting training aircraft, and by the Academy Parachute Team, the Wings of Blue, for year-round parachuting operations. Based on the Series 300 aircraft."

 

…And the nearly exact pattern previously tracked, that is pointing anons to Arlington digs.

 

ANVIS call sign is also interesting with what you have pointed out. However, I can't find anything stating this aircraft has imaging equipment aboard.

Anonymous ID: c0c79f Dec. 17, 2018, 9:35 a.m. No.4347874   🗄️.is 🔗kun

Also interesting today:

Cirrus T-53A Kadet 2 in the air today, "The T-53s represent the backbone of the Academy's Powered Flight training program in which over 500 cadets participate annually."

 

The ANVIS Twin Otter making the Arlington pattern.

 

VENUS01, aka AF1 82-8000 (backup) in the air and blipping on and off radar. It seems to be altitude roller coaster, flying high and then low, at about 470 kts. Either someone is onboard getting zero gravity training or VENUS01 is testing flight controls.

Anonymous ID: c0c79f Dec. 17, 2018, 9:47 a.m. No.4347981   🗄️.is 🔗kun   >>8038 >>8076 >>8312

>>4347945

 

>probable REASON for the Twin Otter's peculiar flight path, and demonstrate that it is probably something very mundane like checking antenna radiation pattern from the Navy Research Lab on Chesapeake Bay

This holds water, see:

Airlift support for the US Air Force Academy cadet parachuting program is provided by three UV-18B aircraft which carry a pilot, copilot and up to 17 jumpers. These Twin Otters are the only three owned by the Air Force. In the MSAG Antenna Test and Evaluation conducted 25-31 August 1998 in Marina CA, the NPS/CIRPAS UV-18A Twin Otter provided the surrogate UAV function during a test and evaluation of the MSAG ITT Antenna under development by the Joint Projects Office. Imagery from the Twin Otter was received by the multi- source capable antenna based at the CIRPAS facility in Marina. In the Alaska Army National Guard the UV-18As have been replaced by the C-23B+.

https://fas.org/man/dod-101/sys/ac/uv-18.htm

and:

Because the DeHavilland DHC-6 Twin Otter is a highly maneuverable aircraft which can be flown slowly (80-160 knots/150-300 km/hr) and in tight circles, these aircraft are considered extremely versatile survey airplanes. The US Geological Survey (USGS) utilizes the NOAA Twin Otter as a platform for aerial surveys of coastal areas before and after major tropical storms. Combining oblique video and 35 mm photography, the scientists can assess the coastal erosion caused by major meteorological events. The video camera is mounted on a tripod secured to the covering of the belly camera port, and the aft section of the door on the left side is removed to facilitate photography. Scientists working in the aft section of the aircraft are required to don safety harnesses and secure the harnesses to the aircraft during the entire flight. A global positioning system (GPS) data drop located in the rear of the aircraft on the right side provides researchers with continuous latitude/longitude information. Additionally, a scientist with a 35 mm camera continually photographs the shoreline from the left bubble window. To accomplish this mission, the aircraft must be flown at 100 knots ground speed and at 500 feet above ground level. The auxiliary fuel tank may be present or absent, according to the endurance requirements of the project.

https://www.globalsecurity.org/military/systems/aircraft/uv-18.htm