N439DF — S-2E Tracker of Usda Forest Service Fepp
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Live status
Last seen on radar: July 14, 2026.
Facts
- Type
- S-2E Tracker
- Manufacturer
- Grumman
- Operator
- Usda Forest Service Fepp
- Country
- United States
- Built
- 2002
- Serial (MSN)
- 149854
- ICAO hex
- A544DE
Rarity & spotters
★★★★★N439DF is one of 7 S-2E Tracker in our database.
Activity
From our radar history of the last 7 days.
- Flights
- 10
- Airborne time
- 7.4 h
- Max altitude
- 10,700 ft
- Max speed
- 250 kt
- Typical cruise
- 4,500 ft · 196 kt
Airborne minutes per weekday (UTC)
Airborne minutes per hour of day (UTC)
About the type: Grumman S-2 Tracker
The Grumman S-2 Tracker is the first purpose-built, single airframe anti-submarine warfare (ASW) aircraft to enter service with the United States Navy. Designed and initially built by Grumman, the Tracker was of conventional design — propeller-driven with twin radial engines, a high wing that could be folded for storage on aircraft carriers, and tricycle undercarriage. The type was exported to a number of navies around the world. Introduced in 1952, the Tracker and its E-1 Tracer derivative saw service in the U.S. Navy until the mid-1970s, and its C-1 Trader derivative until the mid-1980s, with a few aircraft remaining in service with other air arms into the 21st century. Argentina was the last country to operate the Tracker, with the last two Trackers being taken out of service on 19 November 2025.
More aircraft operated by Usda Forest Service Fepp
More S-2E Tracker
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