Geophysical Survey Aircraft
Cessna 404 Titan

Registration: C-GBWE
Serial #: 404-0624

Cessna 404 Titan

The model 404 Titan Courier is an all metal, low wing, twin-engined aircraft powered by two turbocharged engines that drive constant speed, full-feathering propellers.  The aircraft has fully retractable tricycle landing gear, extendable flaps and manually adjustable trim tabs on the primary controls for all three flight axes.  The aircraft is equipped with full de-icing equipment and sufficient avionics for instrument flying. Supplementary fuel can be added for transoceanic flight.

The aircraft has a rigid aluminum and composite material 2.5 m tail stinger designed to accommodate a magnetometer sensor and wiring.  This tail stinger can be easily removed and the aircraft returned to its original configuration.  There is a camera hole in the belly of the aircraft and provisions for numerous other survey and navigation systems.

The airframe has been extensively modified to reduce the magnetic signature of the aircraft by replacing ferromagnetic parts with those made from special non-magnetic stainless steel or aluminum.  Several wiring changes have also been made to the electrical system to reduce the magnetic field variations around the aircraft.

Cessna 404 Specifications

Crew capacity:

  • Two pilots, one operator (optional)


  • Semi-monocoque


  • Cantilever, low wing
  • Outboard ailerons with trim tab
  • Single-slotted inboard flaps


  • Conventional stabilizers
  • Elevators and rudder with trim tabs

Power Plant:

  • Two Teledyne Continental GTSIO-520-M, 375 hp, six cylinder, horizontally-opposed, air-cooled, fuel-injected, turbocharged, reciprocating engines, overhaul 1,600 hours
  • Two three-blade, fully-feathering, constant-speed propellers, overhaul 2,000 hours


  • Dual flight controls with IFR instruments and avionics
  • Integrated flight control system with 3-axis autopilot
  • Full airframe and propeller de-icing
  • Weather radar


Wing span 46 ft. 8 in 14.23 m
Exterior length (plus stinger) 39 ft 6 in 12.05 m
Exterior height 13 ft 3 in 4.04 m
Interior usable length 11 ft 3 in 3.40 m
Interior usable width 4 ft 6 in 1.40 m
Interior height 4 ft 3 in 1.30 m
Fuel capacity (usable), no ferry tank 344 US gal 1,300 l
Removable auxiliary fuel tank 53 US gal 200 l
Removable ferry tanks 150 US gal 567 l


Empty 5,410 lb 2,454 kg
Maximum take-off 8,400 lb 3,810 kg

Performance (sea level, standard day, maximum take-off weight, no auxiliary or ferry fuel tanks):

Range at 65% power (plus reserve) 1,380 nm 2,550 km
Cruise airspeed 65% power 167 kt 309 km/h
Fuel flow at 65% power 38 US gal/h 144 l/h
Stall airspeed 70 kt 130 km/h
Service ceiling 25,000 ft 7,625 m
Minimum required runway length 3,500 ft 1,067 m
Two engine rate of climb 1,650 ft/min 503 m/min
Maximum sustained climb gradient 460 ft/nm 76 m/km
Single engine rate of climb 230 ft/min 70 m/min

Type of Aviation Fuel:

  • 100 LL Avgas

Maximum Endurance:

  • 8 hours 25 minutes plus 45 minutes reserve at 65% power

Geophysical Capabilities

AIRGrav, SGL airborne gravimeter
Magnetic total field
Gamma-ray spectrometer, up to 63 litres (3,840 in3) of detector crystals
SGMethane, methane gas sensing

Other Features:

  • Tail stinger 2.54 m long and 21 cm in diameter, capable of housing a 5.5 kg sensor
  • HF radio
  • Video camera mount with 8 cm diameter glass covered opening in the belly of the aircraft
  • Two instrument racks, standard 48 cm (19 in) width
  • Radar altimeter, 0-3,000 m
  • Electrical power capacity 28 VDC at 200 amp
  • Static inverter, 115 VAC, 400 Hz
  • GPS receiver and antenna plus data link for real-time corrections