Apparatus

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sensors Mode-S transponder

A2ABCA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N271SG · PIPER PA-28-140/150/160/180 · operated by COCO AIRCRAFT INC

Hex
A2ABCA
Octal
50525712
Decimal
10,660,810
Country
US
Tail
N271SG
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
167
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2ABCA.

Country allocation

The ICAO 24-bit address A2ABCA 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
N271SG - 167 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 N271SG - Jul 12, 15:30 UTCJul 12, 16:20 UTC50m
2026-07-11 N271SG - Jul 11, 14:25 UTCJul 11, 15:35 UTC1h 10m
2026-07-10 N271SG COI → COI Jul 10, 15:25 UTCJul 10, 21:25 UTC6h 0m
2026-07-10 N271SG COI → COI Jul 10, 14:00 UTCJul 10, 14:45 UTC45m
2026-07-10 N271SG - Jul 10, 12:30 UTCJul 10, 13:20 UTC50m
2026-07-10 N271SG COI → COI Jul 10, 01:00 UTCJul 10, 03:50 UTC2h 50m
2026-07-09 N271SG COI → COI Jul 9, 18:35 UTCJul 9, 21:25 UTC2h 50m
2026-07-09 N271SG - Jul 9, 14:25 UTCJul 9, 16:15 UTC1h 50m
2026-07-09 N271SG - Jul 9, 12:10 UTCJul 9, 13:55 UTC1h 45m
2026-07-08 N271SG COI → COI Jul 8, 18:25 UTCJul 8, 19:25 UTC1h 0m
2026-07-08 N271SG - Jul 8, 14:25 UTCJul 8, 15:20 UTC55m
2026-07-08 N271SG - Jul 8, 12:20 UTCJul 8, 13:30 UTC1h 10m
2026-07-07 N271SG COI → COI Jul 7, 20:30 UTCJul 7, 22:05 UTC1h 35m
2026-07-07 N271SG - Jul 7, 17:05 UTCJul 7, 17:55 UTC50m
2026-07-07 N271SG - Jul 7, 15:20 UTCJul 7, 16:25 UTC1h 5m
2026-07-06 N271SG COI → COI Jul 6, 17:20 UTCJul 6, 18:05 UTC45m
2026-07-06 N271SG COI → COI Jul 6, 15:20 UTCJul 6, 16:10 UTC50m
2026-07-06 N271SG - Jul 6, 13:55 UTCJul 6, 14:35 UTC40m
2026-07-06 N271SG - Jul 6, 12:05 UTCJul 6, 13:10 UTC1h 5m
2026-07-05 N271SG - Jul 5, 12:00 UTCJul 5, 15:50 UTC3h 50m
2026-07-04 N271SG COI → COI Jul 4, 14:05 UTCJul 4, 15:05 UTC1h 0m
2026-07-03 N271SG COI → COI Jul 3, 16:50 UTCJul 3, 17:40 UTC50m
2026-07-03 N271SG - Jul 3, 13:50 UTCJul 3, 15:40 UTC1h 50m
2026-07-02 N271SG COI → COI Jul 2, 23:15 UTCJul 3, 00:00 UTC45m
2026-07-02 N271SG - Jul 2, 20:20 UTCJul 2, 21:15 UTC55m
2026-07-02 N271SG - Jul 2, 18:25 UTCJul 2, 19:45 UTC1h 20m
2026-07-02 N271SG - Jul 2, 16:55 UTCJul 2, 17:40 UTC45m
2026-07-02 N271SG COI → COI Jul 2, 15:30 UTCJul 2, 16:15 UTC45m
2026-07-02 N271SG COI → COI Jul 2, 14:05 UTCJul 2, 14:45 UTC40m
2026-07-02 N271SG COI → COI Jul 2, 12:10 UTCJul 2, 13:15 UTC1h 5m
2026-07-01 N271SG - Jul 1, 20:40 UTCJul 1, 22:00 UTC1h 20m
2026-07-01 N271SG - Jul 1, 18:00 UTCJul 1, 19:20 UTC1h 20m
2026-07-01 N271SG COI → COI Jul 1, 14:40 UTCJul 1, 15:55 UTC1h 15m
2026-06-30 N271SG - Jun 30, 18:00 UTCJun 30, 21:30 UTC3h 30m
2026-06-30 N271SG - Jun 30, 15:10 UTCJun 30, 16:30 UTC1h 20m
2026-06-30 N271SG - Jun 30, 12:25 UTCJun 30, 14:00 UTC1h 35m
2026-06-29 N271SG COI → COI Jun 29, 18:49 UTCJun 29, 22:05 UTC3h 15m
2026-06-29 N271SG COI → COI Jun 29, 17:40 UTCJun 29, 18:10 UTC30m
2026-06-29 N271SG - Jun 29, 14:29 UTCJun 29, 16:00 UTC1h 30m
2026-06-29 N271SG - Jun 29, 12:05 UTCJun 29, 13:30 UTC1h 25m
2026-06-28 N271SG - Jun 28, 20:34 UTCJun 28, 22:10 UTC1h 35m
2026-06-28 N271SG - Jun 28, 18:10 UTCJun 28, 19:14 UTC1h 5m
2026-06-28 N271SG COI → COI Jun 28, 13:40 UTCJun 28, 17:19 UTC3h 40m
2026-06-27 N271SG COI → COI Jun 27, 21:34 UTCJun 27, 22:35 UTC1h 0m
2026-06-27 N271SG - Jun 27, 17:49 UTCJun 27, 18:09 UTC20m
2026-06-27 N271SG - Jun 27, 15:45 UTCJun 27, 16:20 UTC35m
2026-06-27 N271SG COI → COI Jun 27, 13:55 UTCJun 27, 14:45 UTC50m
2026-06-27 N271SG - Jun 27, 12:19 UTCJun 27, 13:04 UTC45m
2026-06-27 N271SG COI → COI Jun 27, 00:50 UTCJun 27, 01:35 UTC45m
2026-06-26 N271SG COI → COI Jun 26, 15:20 UTCJun 26, 17:35 UTC2h 15m

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 N271SG page for operator, model, and routing details .

Mode-S A2ABCA frequently asked

What is Mode-S code A2ABCA?
A2ABCA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N271SG.
Where is Mode-S A2ABCA registered?
Mode-S code A2ABCA 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 A2ABCA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2ABCA, octal 50525712, decimal 10,660,810.
What flights does A2ABCA operate?
Mode-S A2ABCA has broadcast 1 distinct callsign, including N271SG.