N640
Built 1944 · registered US
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Type photo — not this specific aircraftPhoto via Wikimedia Commons: Grumman G-21A Alaska Aviation Heritage Museum.jpgNo G-21listed for sale right now. Watch this model and we'll surface new listings as they hit the market.
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Performance specs
- Range
- 540 nm
- Cruise speed
- 166 kt
- Max speed
- 174 kt
- Service ceiling
- 22,000 ft
- Takeoff distance
- —
- Landing distance
- —
- MTOW
- 3,600 kg
- Empty weight
- —
- Fuel capacity
- —
- Length
- 11.8 m
- Wingspan
- 14.9 m
- Height
- 4.9 m
- Seats
- 9
- Max passengers
- 9
Flight activity
(26 tracking legs recorded)- Last 30 days
- 0
- Last 90 days
- 16
- Last seen
- 9 Nov 2026
- Tracked since
- 29 May 2026
Frequent routes: KHIO → KHIO (4) · KBOI → KCPR (1) · KDWA → KHIO (1)
- … → KDWA3 Oct 2026 · 0h 07m
- KHIO → …2 Oct 2026 · 2h 17m
- … → KHIO16 Sept 2026 · 0h 47m
- Tracked flight16 Sept 2026 · 0h 47m
- … → KBFI16 Sept 2026 · 0h 49m
- KHIO → KBFI16 Sept 2026 · 0h 50m
Showing the 6 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.
Common. More common than 63% of the aircraft models we track.
Other G-21 airframes by tail number — same model as N640.
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- N3271958
- N9KL1956
- N985R1951
- C-FIOL1948
- N681571947
- N1019N1946
- N7411946
- N229321946
- N21A1946
- N7031946
- N3291945
- N6DF1945
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Registration history
(1)- N640USACTIVETEUFEL HOLLY FARMS INC2012 – 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
What aircraft model is N640?
N640 is a Grumman G-21, built in 1944. Sprinkle's record for N640 covers its lineage, ownership history and specifications.
Is N640 currently active?
Registry records list N640's status as Active, registered in United States — a Grumman G-21.
What is the manufacturer serial number (MSN) of N640?
N640 carries manufacturer serial number (MSN) 1201, the serial assigned to this Grumman G-21 airframe when it was built.
What is the ICAO24 / Mode S code for N640?
N640's ICAO24 (Mode S) transponder code is A8653A — the hex address the Mode S transponder on this Grumman G-21 broadcasts.