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sensors Mode-S transponder

A2D88A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N28251 · PIPER PA-28-140/150/160/180 · operated by CAE OXFORD AVIATION ACADEMY PHOENIX INC

Hex
A2D88A
Octal
50554212
Decimal
10,672,266
Country
US
Tail
N28251
Type
P28A
Broadcasting now · callsign OXF2978 · 4,950 ft
Flights observed
233
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 16:45 UTC

Current position

A2D88A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2D88A 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
OXF2978 - 233 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 OXF2978 - Jul 23, 15:50 UTCJul 23, 16:45 UTC55m
2026-07-23 OXF2978 - Jul 23, 13:25 UTCJul 23, 14:05 UTC40m
2026-07-22 OXF2978 - Jul 22, 13:25 UTCJul 22, 14:30 UTC1h 5m
2026-07-21 OXF2978 - Jul 21, 19:00 UTCJul 21, 20:55 UTC1h 55m
2026-07-21 OXF2978 - Jul 21, 16:20 UTCJul 21, 18:30 UTC2h 10m
2026-07-21 OXF2978 - Jul 21, 12:50 UTCJul 21, 14:40 UTC1h 50m
2026-07-20 OXF2978 - Jul 20, 18:00 UTCJul 20, 18:25 UTC25m
2026-07-19 OXF2978 - Jul 19, 18:30 UTCJul 19, 20:20 UTC1h 50m
2026-07-19 OXF2978 - Jul 19, 13:50 UTCJul 19, 14:55 UTC1h 5m
2026-07-17 OXF2978 - Jul 17, 22:15 UTCJul 18, 00:00 UTC1h 45m
2026-07-16 OXF2978 - Jul 16, 18:10 UTCJul 16, 19:25 UTC1h 15m
2026-07-16 OXF2978 - Jul 16, 16:00 UTCJul 16, 17:00 UTC1h 0m
2026-07-13 OXF2978 - Jul 13, 15:55 UTCJul 13, 16:40 UTC45m
2026-07-12 OXF2978 - Jul 12, 15:35 UTCJul 12, 18:15 UTC2h 40m
2026-07-11 OXF2978 - Jul 11, 16:15 UTCJul 11, 18:15 UTC2h 0m
2026-07-10 OXF2978 - Jul 10, 16:00 UTCJul 10, 17:15 UTC1h 15m
2026-07-10 OXF2978 - Jul 10, 12:30 UTCJul 10, 14:00 UTC1h 30m
2026-07-10 OXF2978 - Jul 10, 07:10 UTCJul 10, 08:25 UTC1h 15m
2026-07-10 OXF2978 - Jul 10, 03:35 UTCJul 10, 05:05 UTC1h 30m
2026-07-09 OXF2978 - Jul 9, 17:20 UTCJul 9, 19:40 UTC2h 20m
2026-07-09 OXF2978 - Jul 9, 13:15 UTCJul 9, 14:35 UTC1h 20m
2026-07-08 OXF2978 - Jul 8, 18:05 UTCJul 8, 18:35 UTC30m
2026-07-08 OXF2978 - Jul 8, 17:05 UTCJul 8, 17:30 UTC25m
2026-07-06 OXF2978 - Jul 6, 15:05 UTCJul 6, 17:50 UTC2h 45m
2026-07-04 OXF2978 - Jul 4, 15:55 UTCJul 4, 17:15 UTC1h 20m
2026-07-04 OXF2978 MSC → TUS Jul 4, 12:10 UTCJul 4, 14:55 UTC2h 45m
2026-07-03 OXF2978 - Jul 3, 16:15 UTCJul 3, 18:05 UTC1h 50m
2026-07-02 OXF2978 - Jul 2, 18:45 UTCJul 2, 20:25 UTC1h 40m
2026-07-02 OXF2978 - Jul 2, 15:55 UTCJul 2, 17:35 UTC1h 40m
2026-07-02 OXF2978 - Jul 2, 12:25 UTCJul 2, 14:05 UTC1h 40m
2026-07-01 OXF2978 - Jul 1, 23:50 UTCJul 2, 00:55 UTC1h 5m
2026-07-01 OXF2978 - Jul 1, 20:15 UTCJul 1, 21:45 UTC1h 30m
2026-07-01 OXF2978 - Jul 1, 17:05 UTCJul 1, 19:05 UTC2h 0m
2026-07-01 OXF2978 - Jul 1, 13:10 UTCJul 1, 15:30 UTC2h 20m
2026-06-30 OXF2978 - Jun 30, 13:20 UTCJun 30, 15:10 UTC1h 50m
2026-06-29 OXF2978 - Jun 29, 21:50 UTCJun 29, 23:19 UTC1h 30m
2026-06-29 OXF2978 - Jun 29, 18:10 UTCJun 29, 19:24 UTC1h 15m
2026-06-28 OXF2978 - Jun 28, 21:20 UTCJun 28, 22:10 UTC50m
2026-06-28 OXF2978 - Jun 28, 18:00 UTCJun 28, 20:45 UTC2h 45m
2026-06-28 OXF2978 - Jun 28, 13:45 UTCJun 28, 14:59 UTC1h 15m
2026-06-27 OXF2978 - Jun 27, 21:15 UTCJun 27, 22:49 UTC1h 35m
2026-06-27 OXF2978 - Jun 27, 15:49 UTCJun 27, 16:35 UTC45m
2026-06-27 OXF2978 - Jun 27, 14:35 UTCJun 27, 15:14 UTC40m
2026-06-26 OXF2978 - Jun 26, 14:59 UTCJun 26, 17:04 UTC2h 5m
2026-06-25 OXF2978 - Jun 25, 20:25 UTCJun 25, 21:10 UTC45m
2026-06-25 OXF2978 - Jun 25, 17:20 UTCJun 25, 18:19 UTC1h 0m
2026-06-25 OXF2978 MSC → MSC Jun 25, 14:20 UTCJun 25, 14:55 UTC35m
2026-06-25 OXF2978 - Jun 25, 13:00 UTCJun 25, 13:45 UTC45m
2026-06-24 OXF2978 - Jun 24, 20:14 UTCJun 24, 21:54 UTC1h 40m
2026-06-24 OXF2978 - Jun 24, 17:25 UTCJun 24, 18:50 UTC1h 25m

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 N28251 page for operator, model, and routing details .

Mode-S A2D88A frequently asked

What is Mode-S code A2D88A?
A2D88A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N28251.
Where is Mode-S A2D88A registered?
Mode-S code A2D88A 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 A2D88A broadcasting right now?
Yes. Mode-S A2D88A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2D88A, octal 50554212, decimal 10,672,266.
What flights does A2D88A operate?
Mode-S A2D88A has broadcast 1 distinct callsign, including OXF2978.