N21SG
Built 1976 · registered US
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Flight activity
(4 tracking legs recorded)Live tracking paused — activity data through 24 Aug 2026. Windows below are measured to that date.
- 30 days to 24 Aug 2026
- 2
- 90 days to 24 Aug 2026
- 4
- Last seen
- 22 Aug 2026
- Tracked since
- 3 Jul 2026
Showing the 0 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 96% of the aircraft models we track.
Other 421 airframes by tail number — same model as N21SG.
- N421GR1993
- N1206N1985
- N421TX1985
- N994MZ1985
- C-FHKI1984
- N421GS1984
- N421GL1984
- N284DM1984
- N92CV1984
- N659RJ1984
- N421YW1984
- N116JJ1984
- N811PG1984
- N421LL1983
- N440DL1983
- N421TV1982
Registration history
(1)- N21SGUSACTIVETWO ONE SIERRA GOLF LLC2012 – 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 type of aircraft is N21SG?
N21SG is a Cessna 421, built in 1976.
Where is N21SG registered?
N21SG is currently registered in United States (US).
What is the MSN of N21SG?
The manufacturer serial number (MSN) of N21SG is 421C0039.
What is the ICAO24 (Mode S) code for N21SG?
N21SG's ICAO24 hex code is A1B8C0.
Is N21SG still airworthy?
N21SG's current registry status is Active.