PlaneTrack / aircraft / N21SG

N21SG - Cessna 421C

N21SG is a Cessna 421C operated by Two One Sierra Golf Llc, Mode-S hex code A1B8C0. Track it live, browse its recent flights, or download its full position history.

No photo yet for Cessna 421C

RegistrationN21SG

Mode-S hexA1B8C0

ManufacturerCessna

Model421C

OperatorTwo One Sierra Golf Llc

Last seen2026-08-20 16:16 UTC

Last callsignN21SG

Track live on the map Buy full history (CSV) API access

Recent flights (last 30 days)

Date	Callsign	From	To	Dep	Arr
2026-08-20	N21SG	KBFI	CYYJ	08:47 PDT	09:16 PDT
Route flown, from our receiver network. Green = start, red = end.
2026-08-16	N21SG	CYYJ	KBFI	14:34 PDT	15:04 PDT
Route flown, from our receiver network. Green = start, red = end.

Times are local to each airport. Hover for UTC. Tap Map to see the route flown.

Data access

Live position and 365-day history for this aircraft are available through the PlaneTrack API (commercial use from $29/month) and as one-off CSV extracts from our own receiver network archive.