PRESTON RICHARD R TRUSTEE, PRESTON JO A TRUSTEE· ICAO24 a431c7· last seen 2d ago

N37DK is a Gulfstream American - Grumman American Gulfstream American GA7, a twin-engine piston aircraft operated by PRESTON RICHARD R TRUSTEE, PRESTON JO A TRUSTEE. SkyMeter has tracked 66 flights totalling 49 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is KABQ to KABQ. Service window in our records spans 388 days. Of those flights, 8 (12.1%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Gulfstream American - Grumman American Gulfstream American GA7 has a 37 ft wingspan, a maximum takeoff weight of 3,800 lb.

About the Gulfstream American - Grumman American Gulfstream American GA7

The Gulfstream American GA-7 Cougar is a light twin-engine trainer that emerged during the late 1970s as Grumman American's answer to the Piper Seminole and Beechcraft Duchess in the entry-level multi-engine market. Manufactured between 1978 and 1979 before Gulfstream acquired the design, the Cougar was built to provide affordable twin-engine training with docile handling characteristics and relatively low operating costs. Powered by two Lycoming O-320 engines producing 160 horsepower each, the aircraft featured a distinctive T-tail configuration and fixed tricycle landing gear, prioritizing simplicity and maintainability over speed.

The GA-7's brief production run (only about 115 aircraft were built before the line closed) makes it a relatively uncommon sight compared to its Piper and Beechcraft competitors, yet it remains popular among flight schools for multi-engine instruction. The type's benign stall characteristics and counter-rotating propellers (eliminating critical engine concerns) made it particularly well-suited for teaching pilots transitioning from single-engine aircraft. With a maximum cruise speed around 160 knots and a service ceiling of 17,400 feet, the Cougar was never designed to compete on performance but rather on training value and operating economics.

Today, the GA-7 occupies a niche role in general aviation, primarily serving flight training organizations and private owners who value its straightforward systems and relatively forgiving flight envelope. Its rarity compared to the ubiquitous Seminole means parts availability can be challenging, though dedicated owner groups maintain support networks. The type's maximum takeoff weight of 3,800 pounds and approach speed around 70 knots place it squarely in the light twin category, with handling that remains accessible to pilots building multi-engine time.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
66
all time
FLOWN HOURS
49
tracked time
📍
AIRPORTS VISITED
8
unique
📡
CALLSIGNS
2
12 routes
📅
SERVICE PERIOD
06/24/2025 → 07/18/2026
first → last
INCIDENT RATE
12.1%
8 flagged

Top routes

By flight count

7
8
2
2
1
1
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Gulfstream American - Grumman American Gulfstream American GA7

Engines
Twin Piston
Vref (approach)
82 kt
MTOW
3,800 lb
Wingspan
37 ft
Length
29 ft
Wake category
Light

Recent flights

Newest 37 operations of N37DK

37
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