Douglas DC-3 Flight Survey Station
The instruments in the top panel are, from left to right in the upper row: two high voltage voltmeters; clock; voltmeter for the aircraft's 28V electrical system; Outside Air Temperature; Air Speed Indicator; Altimeter. In the bottom row, L-R: Localiser; Glidepath; two DME(A)s; Marker receiver for Airways, Outer and Middle Markers; two blanks. The Cathode Ray Oscilloscope (CRO) is for a Rebecca receiver, used for DME checks. The box to its right is Rebecca test gear, used to check the aircraft's systems and rarely fitted. To the Surveyor's left below the window sill are audio control boxes for the aircraft's intercom system.
|Left: Another view of the port Surveyor's station. Equipment changed over time, depending on the current tasking of the aircraft and changing technology.|
The following story was compiled by Doug Gillison, DCA Public Relations, for the November 26, 1946 issue of Interavia magazine:
"Aircraft will also be used for testing pilots for commercial licences and inspecting remote outstations."
include duplication of all engine instruments at the flight engineer's
desk. In addition to a normal communication transmitter operating on eight
frequencies with duplicate emergency unit directly controlled by radio
operator, installation of equipment includes:- VHF transmitter and receiver
for airport and airways control; pilot's remotely controlled receiver
for medium or high frequency work, special 33 MHz radio range receiver
for use with the Department's existing chain of transmitters; VHF radio
range receiver for new 112-118 MHz 4-course radio range equipment now
being tested; automatic radio compass to give aircraft's heading in relation
to any radio beacon or broadcast station; localizer instrument approach
receiver giving lateral indication of aircraft's position when coming
in on SCS-51 ILS; glide path instrument approach receiver giving vertical
position when landing on SCS-51;
||Left: The starboard Airways Surveyor station aboard DC-3 VH-CAO in 1964. Immediately above the Surveyor's desk are two chart recorders. As the aircraft tracked the navigation aid being tested, the Surveyor would mark deviations from the desired flight path radioed to the aircraft from a ground survey party at the navigation aid site.|
|Left: Close-up of the two chart recorders.|
(Photos: CAHS collection)
Click here to see a photo of a DCA DC-3 on ILS calibration work.
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