Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A2B7C6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2740X · DE HAVILLAND DHC-2 Beaver · operated by RUSTAIR INC

Hex
A2B7C6
Octal
50533706
Decimal
10,663,878
Country
US
Tail
N2740X
Type
DHC2
Broadcasting now · callsign N2740X · 1,175 ft
Flights observed
184
Distinct callsigns
1
Country
US
Last broadcast
16h ago

Current position

A2B7C6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2B7C6 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N2740X - 184 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N2740X - Jul 17, 23:14 UTCJul 18, 01:00 UTC1h 45m
2026-07-17 N2740X - Jul 17, 20:44 UTCJul 17, 22:35 UTC1h 50m
2026-07-17 N2740X - Jul 17, 18:34 UTCJul 17, 19:00 UTC25m
2026-07-17 N2740X - Jul 17, 17:40 UTCJul 17, 18:00 UTC20m
2026-07-17 N2740X - Jul 17, 01:55 UTCJul 17, 02:34 UTC40m
2026-07-17 N2740X - Jul 17, 00:35 UTCJul 17, 01:20 UTC45m
2026-07-16 N2740X - Jul 16, 23:15 UTCJul 16, 23:40 UTC25m
2026-07-16 N2740X - Jul 16, 20:39 UTCJul 16, 22:30 UTC1h 50m
2026-07-16 N2740X - Jul 16, 19:05 UTCJul 16, 19:25 UTC20m
2026-07-16 N2740X - Jul 16, 16:44 UTCJul 16, 18:59 UTC2h 15m
2026-07-16 N2740X - Jul 16, 01:10 UTCJul 16, 03:10 UTC2h 0m
2026-07-15 N2740X - Jul 15, 18:40 UTCJul 15, 20:00 UTC1h 20m
2026-07-15 N2740X - Jul 15, 15:50 UTCJul 15, 17:15 UTC1h 25m
2026-07-14 N2740X - Jul 14, 02:35 UTCJul 14, 03:30 UTC55m
2026-07-14 N2740X - Jul 14, 01:10 UTCJul 14, 02:00 UTC50m
2026-07-13 N2740X - Jul 13, 18:20 UTCJul 13, 19:40 UTC1h 20m
2026-07-12 N2740X - Jul 12, 16:01 UTCJul 12, 17:10 UTC1h 10m
2026-07-12 N2740X - Jul 12, 02:30 UTCJul 12, 03:25 UTC55m
2026-07-12 N2740X - Jul 12, 00:45 UTCJul 12, 01:35 UTC50m
2026-07-11 N2740X - Jul 11, 20:50 UTCJul 11, 22:55 UTC2h 5m
2026-07-11 N2740X - Jul 11, 16:15 UTCJul 11, 18:00 UTC1h 45m
2026-07-11 N2740X - Jul 11, 01:00 UTCJul 11, 02:25 UTC1h 25m
2026-07-10 N2740X - Jul 10, 23:25 UTCJul 10, 23:40 UTC15m
2026-07-10 N2740X - Jul 10, 22:20 UTCJul 10, 22:35 UTC15m
2026-07-10 N2740X - Jul 10, 21:25 UTCJul 10, 21:40 UTC15m
2026-07-10 N2740X - Jul 10, 18:40 UTCJul 10, 20:10 UTC1h 30m
2026-07-10 N2740X - Jul 10, 02:10 UTCJul 10, 02:35 UTC25m
2026-07-10 N2740X - Jul 10, 00:55 UTCJul 10, 01:30 UTC35m
2026-07-09 N2740X - Jul 9, 21:45 UTCJul 9, 22:35 UTC50m
2026-07-09 N2740X - Jul 9, 20:10 UTCJul 9, 21:00 UTC50m
2026-07-09 N2740X - Jul 9, 16:20 UTCJul 9, 18:05 UTC1h 45m
2026-07-08 N2740X - Jul 8, 22:20 UTCJul 8, 23:35 UTC1h 15m
2026-07-08 N2740X - Jul 8, 18:35 UTCJul 8, 20:50 UTC2h 15m
2026-07-08 N2740X - Jul 8, 16:15 UTCJul 8, 18:00 UTC1h 45m
2026-07-07 N2740X - Jul 7, 23:20 UTCJul 8, 00:55 UTC1h 35m
2026-07-07 N2740X - Jul 7, 20:55 UTCJul 7, 22:45 UTC1h 50m
2026-07-07 N2740X - Jul 7, 20:05 UTCJul 7, 20:20 UTC15m
2026-07-07 N2740X - Jul 7, 19:00 UTCJul 7, 19:25 UTC25m
2026-07-07 N2740X - Jul 7, 16:35 UTCJul 7, 18:20 UTC1h 45m
2026-07-07 N2740X - Jul 7, 00:50 UTCJul 7, 02:40 UTC1h 50m
2026-07-06 N2740X - Jul 6, 23:30 UTCJul 7, 00:15 UTC45m
2026-07-06 N2740X - Jul 6, 22:00 UTCJul 6, 22:35 UTC35m
2026-07-06 N2740X - Jul 6, 19:55 UTCJul 6, 21:05 UTC1h 10m
2026-07-06 N2740X - Jul 6, 18:15 UTCJul 6, 19:15 UTC1h 0m
2026-07-06 N2740X - Jul 6, 15:55 UTCJul 6, 17:35 UTC1h 40m
2026-07-06 N2740X - Jul 6, 01:10 UTCJul 6, 02:50 UTC1h 40m
2026-07-05 N2740X - Jul 5, 20:55 UTCJul 5, 22:40 UTC1h 45m
2026-07-05 N2740X - Jul 5, 20:05 UTCJul 5, 20:25 UTC20m
2026-07-05 N2740X - Jul 5, 18:50 UTCJul 5, 19:15 UTC25m
2026-07-05 N2740X - Jul 5, 16:30 UTCJul 5, 18:10 UTC1h 40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N2740X page for operator, model, and routing details .

Mode-S A2B7C6 frequently asked

What is Mode-S code A2B7C6?
A2B7C6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2740X.
Where is Mode-S A2B7C6 registered?
Mode-S code A2B7C6 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A2B7C6 broadcasting right now?
Yes. Mode-S A2B7C6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B7C6, octal 50533706, decimal 10,663,878.
What flights does A2B7C6 operate?
Mode-S A2B7C6 has broadcast 1 distinct callsign, including N2740X.