Apparatus

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sensors Mode-S transponder

A2D1C6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N281AV · AIRBUS A-320 · operated by AIRCOL 14 TRUST

Hex
A2D1C6
Octal
50550706
Decimal
10,670,534
Country
US
Tail
N281AV
Type
A320
No current signal · last broadcast 22h ago
Flights observed
296
Distinct callsigns
20
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S A2D1C6.

Country allocation

The ICAO 24-bit address A2D1C6 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 20 distinct

Callsign Airline Flights Last seen
AVR4813 - 13 2026-07-11
AVR4814 - 11 2026-07-11
AVR5246 Avianca Express 10 2026-06-09
AVR5204 Avianca Express 10 2026-06-09
AVR4879 - 10 2026-07-11
AVR4878 - 10 2026-07-11
AVR5225 - 9 2026-07-09
AVR4831 - 9 2026-07-12
AVR4864 - 8 2026-07-07
AVR4832 - 8 2026-07-12
AVR5238 - 7 2026-07-12
AVR5224 Avianca Express 7 2026-06-09
AVR4861 - 7 2026-07-10
AVR4847 - 7 2026-07-12
AVR4846 - 7 2026-07-12
AVR4805 - 7 2026-07-14
AVR4804 - 7 2026-07-13
AVR4839 - 6 2026-07-12
AVR4837 - 6 2026-07-11
AVR4836 - 6 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AVR4805 - Jul 14, 00:20 UTCJul 14, 00:45 UTC25m
2026-07-13 AVR4804 - Jul 13, 22:35 UTCJul 13, 22:40 UTC5m
2026-07-13 AVR4836 - Jul 13, 18:10 UTCJul 13, 18:30 UTC20m
2026-07-13 AVR4872 BOG → BOG Jul 13, 14:20 UTCJul 13, 16:50 UTC2h 30m
2026-07-13 AVR4875 - Jul 13, 12:45 UTCJul 13, 13:00 UTC15m
2026-07-13 AVR4822 - Jul 13, 00:10 UTCJul 13, 03:40 UTC3h 30m
2026-07-12 AVR4846 - Jul 12, 22:05 UTCJul 12, 22:30 UTC25m
2026-07-12 AVR4847 - Jul 12, 19:40 UTCJul 12, 20:05 UTC25m
2026-07-12 AVR4831 - Jul 12, 18:10 UTCJul 12, 18:25 UTC15m
2026-07-12 AVR4832 - Jul 12, 15:15 UTCJul 12, 15:30 UTC15m
2026-07-12 AVR5238 - Jul 12, 13:30 UTCJul 12, 13:55 UTC25m
2026-07-12 AVR4839 - Jul 12, 12:05 UTCJul 12, 12:30 UTC25m
2026-07-12 AVR4805 - Jul 12, 00:55 UTCJul 12, 01:10 UTC15m
2026-07-11 AVR4804 - Jul 11, 23:00 UTCJul 11, 23:15 UTC15m
2026-07-11 AVR4837 - Jul 11, 20:55 UTCJul 11, 21:10 UTC15m
2026-07-11 AVR4836 - Jul 11, 18:05 UTCJul 11, 18:20 UTC15m
2026-07-11 AVR4813 - Jul 11, 16:35 UTCJul 11, 16:50 UTC15m
2026-07-11 AVR4814 - Jul 11, 14:45 UTCJul 11, 15:05 UTC20m
2026-07-11 AVR4878 - Jul 11, 12:50 UTCJul 11, 13:10 UTC20m
2026-07-11 AVR4879 - Jul 11, 11:10 UTCJul 11, 11:20 UTC10m
2026-07-11 AVR4805 - Jul 11, 00:30 UTCJul 11, 00:50 UTC20m
2026-07-10 AVR4813 - Jul 10, 16:30 UTCJul 10, 16:45 UTC15m
2026-07-10 AVR4814 - Jul 10, 14:50 UTCJul 10, 15:05 UTC15m
2026-07-10 AVR4878 - Jul 10, 13:00 UTCJul 10, 13:20 UTC20m
2026-07-10 AVR4879 - Jul 10, 11:15 UTCJul 10, 11:25 UTC10m
2026-07-10 AVR4861 - Jul 10, 04:10 UTCJul 10, 04:25 UTC15m
2026-07-10 AVR4862 - Jul 10, 01:20 UTCJul 10, 01:35 UTC15m
2026-07-09 AVR5225 - Jul 9, 21:30 UTCJul 9, 23:45 UTC2h 15m
2026-07-09 AVR4872 BOG → BOG Jul 9, 14:55 UTCJul 9, 16:40 UTC1h 45m
2026-07-09 AVR4875 BGA → BOG Jul 9, 12:45 UTCJul 9, 13:10 UTC25m
2026-07-08 AVR4822 - Jul 8, 00:35 UTCJul 8, 00:50 UTC15m
2026-07-07 AVA8591 - Jul 7, 21:25 UTCJul 7, 21:40 UTC15m
2026-07-07 AVA8412 - Jul 7, 18:20 UTCJul 7, 18:35 UTC15m
2026-07-07 AVR4813 - Jul 7, 16:55 UTCJul 7, 17:10 UTC15m
2026-07-07 AVR4814 - Jul 7, 15:00 UTCJul 7, 15:15 UTC15m
2026-07-07 AVR4878 - Jul 7, 13:25 UTCJul 7, 13:45 UTC20m
2026-07-07 AVR4864 - Jul 7, 01:25 UTCJul 7, 01:35 UTC10m
2026-07-06 AVR4813 - Jul 6, 16:35 UTCJul 6, 16:55 UTC20m
2026-07-06 AVA8581 - Jul 6, 03:40 UTCJul 6, 03:50 UTC10m
2026-07-06 AVA8580 - Jul 6, 00:50 UTCJul 6, 01:05 UTC15m
2026-07-03 AVA128 - Jul 3, 14:00 UTCJul 3, 18:05 UTC4h 5m
2026-07-03 AVA075 - Jul 3, 06:30 UTCJul 3, 06:45 UTC15m
2026-06-27 AVA265 - Jun 27, 00:05 UTCJun 27, 01:24 UTC1h 20m
2026-06-26 AVA264 - Jun 26, 20:59 UTCJun 26, 22:34 UTC1h 35m
2026-06-13 AVA075 BOG → LIM Jun 13, 06:00 UTCJun 13, 06:15 UTC15m
2026-06-13 AVA251 SDQ → BOG Jun 13, 01:55 UTCJun 13, 02:20 UTC25m
2026-06-12 AVA250 BOG → SDQ Jun 12, 20:40 UTCJun 13, 00:55 UTC4h 15m
2026-06-12 AVA8507 MTR → BOG Jun 12, 01:25 UTCJun 12, 01:35 UTC10m
2026-06-11 AVA8496 AXM → MDE Jun 11, 22:25 UTCJun 11, 22:40 UTC15m
2026-06-11 AVA8531 BAQ → BOG Jun 11, 20:15 UTCJun 11, 20:25 UTC10m

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 N281AV page for operator, model, and routing details .

Mode-S A2D1C6 frequently asked

What is Mode-S code A2D1C6?
A2D1C6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N281AV.
Where is Mode-S A2D1C6 registered?
Mode-S code A2D1C6 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 A2D1C6 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2D1C6, octal 50550706, decimal 10,670,534.
What flights does A2D1C6 operate?
Mode-S A2D1C6 has broadcast 20 distinct callsigns, including AVR4813, AVR4814, AVR5246, AVR5204, AVR4879.