Concept prototype · 20X study · Not the official SGL website
SANDER GEOPHYSICS SGL · Ottawa · Est. 1956
●  Aircraft / The fleet

Twelve aircraft. Owned, modified, instrumented.

SGL owns and operates twelve aircraft, modified in its own Transport Canada Approved Maintenance Organization and fitted with the instruments they carry.

TypeAircraftMax gross weightPrimary survey role
Cessna 208B Grand Caravan84,110 kgAIRGrav, magnetics, gradient, radiometrics, SGMethane
de Havilland DHC-6 Twin Otter25,670 kgSGFEM electromagnetics, AIRGrav, radiometrics
Airbus Helicopters AS350 B322,250 kgMagnetic, radiometric and gravity surveys

Typical Figures of Merit for SGL's fixed wing aircraft are near 1 nT.

Cessna 208B Grand Caravan survey aircraft
FIG 03 · Grand Caravan. Photo: SGL
Fleet / 08 airframes

Cessna 208B Grand Caravan

Modified for a triaxial magnetic gradiometer, with a rigid 3 m tail stinger for the magnetometer sensor and a belly camera hole.

RegistrationsC-GSGA · C-GSGJ · C-GSGL · C-GSGU
C-GSGV · C-GSGW · C-GSGY · C-GSGZ
EnginePT6A-114A, 675 shp
Max take off9,062 lb (4,110 kg)
Range1,450 nm
Cruise155 kt
Endurance9 h + 1 h reserve
Service ceiling25,000 ft
DetectorsGamma ray, up to 63 litres
de Havilland DHC-6 Twin Otter survey aircraft
FIG 04 · Twin Otter. Photo: SGL
Fleet / 02 airframes

de Havilland DHC-6 Twin Otter

STOL twin carrying the SGFEM four frequency electromagnetic system, transmitter and receiver in wingtip pods, on a 6.8 m tail stinger configuration.

RegistrationsC-GSGF · C-GSGP
Engines2 x PT6A-27, 680 shp
Survey speeds80 to 160 kt
Max gross weight5,670 kg
EM systemSGFEM, wingtip pods
DetectorsGamma ray, up to 63 litres
Also carriesAIRGrav
Airbus AS350 B3 helicopter on survey at Matagami, Quebec
FIG 05 · AS350 at Matagami, Quebec. Photo: SGL
Fleet / 02 airframes

Airbus Helicopters AS350 B3

The rotary wing element of the fleet, equipped for magnetic, radiometric and gravity surveys, for tight drape and detailed blocks at helicopter spacings.

Aircraft2
Max gross weight2,250 kg
Survey roleMagnetic · Radiometric · Gravity
Detail levelFleet index specification