Skip to main content

N831GR

Built 1988 · registered US

275 registered

Free alerts when N831GR's registration or status changes, or the T-18 market moves.

Representative photo of a Thorp T-18Type photo — not this specific aircraftPhoto via Wikipedia: Thorp T-18
This aircraft is a
Thorp T-18(T18)
Full specs

No T-18listed for sale right now. Watch this model and we'll surface new listings as they hit the market.

Free — save the T-18 to your watchlist and track it in one place.

Flight activity

(9 tracking legs recorded)
Last 30 days
2
Last 90 days
8
Last seen
5 Nov 2026
Tracked since
19 May 2026

Frequent routes: KVGT → KVGT (6) · KVGT → KINS (1)

  • KVGT → KVGT5 Nov 2026 · 3h 43m
  • KVGT → KVGT17 Oct 2026 · 7h 17m
  • … → KVGT4 Oct 2026 · 0h 41m
  • KVGT → KVGT4 Oct 2026 · 0h 42m
  • KVGT → KVGT25 Sept 2026 · 2h 49m
  • KVGT → KVGT23 Sept 2026 · 4h 12m
  • KVGT → KINS19 May 2026 · 0h 12m

Showing the 7 most recent distinct flights. The total counts every raw ADS-B tracking leg, including repeat observations and sub-5-minute artifacts.

From ADS-B observations collected since May 2026. Coverage depends on ground-receiver density; gaps do not mean the aircraft did not fly.

How common is this aircraft?
275Thorp T-18 registered worldwide

Common. More common than 88% of the aircraft models we track.

More T-18 aircraft

Other T-18 airframes by tail number — same model as N831GR.

See all 275 registered T-18
What to do next

Registration history

(1)
  • N831GRUSACTIVE
    GRAHN JAMES A
    1999 – present

Owner names are published by the issuing civil registry (FAA / CCARCS / CASA / ANAC / NZ CAA). Owner addresses present in the source are not republished here. Registered owner? Request removal

N831GR — frequently asked
What aircraft model is N831GR?

N831GR is a Thorp T-18, built in 1988. Sprinkle's record for N831GR covers its lineage, ownership history and specifications.

Is N831GR currently active?

Registry records list N831GR's status as Active, registered in United States — a Thorp T-18.

What is the manufacturer serial number (MSN) of N831GR?

N831GR carries manufacturer serial number (MSN) 831, the serial assigned to this Thorp T-18 airframe when it was built.

What is the ICAO24 / Mode S code for N831GR?

N831GR's ICAO24 (Mode S) transponder code is AB5CB7 — the hex address the Mode S transponder on this Thorp T-18 broadcasts.