Apparatus

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sensors Mode-S transponder

A280BF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N260U · operated by PIPER AIRCRAFT INC

Hex
A280BF
Octal
50500277
Decimal
10,649,791
Country
US
Tail
N260U
Type
P28A
No current signal · last broadcast 13h ago
Flights observed
123
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A280BF.

Country allocation

The ICAO 24-bit address A280BF 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
OUA21 - 123 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 OUA21 - Jul 17, 20:44 UTCJul 17, 21:55 UTC1h 10m
2026-07-17 OUA21 - Jul 17, 15:35 UTCJul 17, 17:55 UTC2h 20m
2026-07-17 OUA21 - Jul 17, 00:50 UTCJul 17, 01:35 UTC45m
2026-07-16 OUA21 - Jul 16, 12:40 UTCJul 16, 13:25 UTC45m
2026-07-15 OUA21 - Jul 15, 14:20 UTCJul 15, 15:05 UTC45m
2026-07-15 OUA21 - Jul 15, 12:05 UTCJul 15, 12:50 UTC45m
2026-07-14 OUA21 - Jul 14, 23:05 UTCJul 14, 23:50 UTC45m
2026-07-14 OUA21 - Jul 14, 19:20 UTCJul 14, 19:35 UTC15m
2026-07-14 OUA21 - Jul 14, 16:45 UTCJul 14, 18:20 UTC1h 35m
2026-07-14 OUA21 - Jul 14, 02:15 UTCJul 14, 03:10 UTC55m
2026-07-14 OUA21 - Jul 14, 00:10 UTCJul 14, 01:10 UTC1h 0m
2026-07-13 OUA21 - Jul 13, 22:00 UTCJul 13, 22:50 UTC50m
2026-07-13 OUA21 - Jul 13, 19:35 UTCJul 13, 20:30 UTC55m
2026-07-13 OUA21 - Jul 13, 15:20 UTCJul 13, 18:00 UTC2h 40m
2026-07-13 OUA21 - Jul 13, 03:30 UTCJul 13, 05:25 UTC1h 55m
2026-07-13 OUA21 - Jul 13, 01:10 UTCJul 13, 02:40 UTC1h 30m
2026-07-12 OUA21 - Jul 12, 22:55 UTCJul 12, 23:35 UTC40m
2026-07-12 OUA21 - Jul 12, 19:50 UTCJul 12, 20:35 UTC45m
2026-07-12 OUA21 - Jul 12, 14:30 UTCJul 12, 15:30 UTC1h 0m
2026-07-11 OUA21 - Jul 11, 19:50 UTCJul 11, 20:35 UTC45m
2026-07-11 OUA21 - Jul 11, 18:10 UTCJul 11, 18:50 UTC40m
2026-07-11 OUA21 - Jul 11, 16:15 UTCJul 11, 17:05 UTC50m
2026-07-11 OUA21 - Jul 11, 12:30 UTCJul 11, 14:20 UTC1h 50m
2026-07-11 OUA21 - Jul 11, 00:15 UTCJul 11, 01:50 UTC1h 35m
2026-07-10 OUA21 - Jul 10, 21:35 UTCJul 10, 23:05 UTC1h 30m
2026-07-10 OUA21 - Jul 10, 17:45 UTCJul 10, 18:50 UTC1h 5m
2026-07-10 OUA21 - Jul 10, 00:30 UTCJul 10, 01:30 UTC1h 0m
2026-07-09 OUA21 - Jul 9, 20:50 UTCJul 9, 23:50 UTC3h 0m
2026-07-09 OUA21 OUN → JLN Jul 9, 18:40 UTCJul 9, 20:05 UTC1h 25m
2026-07-09 OUA21 - Jul 9, 15:25 UTCJul 9, 17:40 UTC2h 15m
2026-07-09 OUA21 - Jul 9, 12:35 UTCJul 9, 14:40 UTC2h 5m
2026-07-09 OUA21 - Jul 9, 01:00 UTCJul 9, 03:05 UTC2h 5m
2026-07-08 OUA21 - Jul 8, 21:55 UTCJul 8, 23:40 UTC1h 45m
2026-07-08 OUA21 - Jul 8, 20:25 UTCJul 8, 21:15 UTC50m
2026-07-08 OUA21 - Jul 8, 17:45 UTCJul 8, 18:30 UTC45m
2026-07-06 OUA21 - Jul 6, 22:50 UTCJul 6, 23:35 UTC45m
2026-07-06 OUA21 - Jul 6, 21:10 UTCJul 6, 22:00 UTC50m
2026-07-06 OUA21 - Jul 6, 18:50 UTCJul 6, 19:00 UTC10m
2026-07-06 OUA21 - Jul 6, 18:00 UTCJul 6, 18:15 UTC15m
2026-07-06 OUA21 - Jul 6, 12:45 UTCJul 6, 15:05 UTC2h 20m
2026-07-06 OUA21 - Jul 6, 02:45 UTCJul 6, 04:25 UTC1h 40m
2026-07-05 OUA21 - Jul 5, 22:55 UTCJul 5, 23:40 UTC45m
2026-07-05 OUA21 - Jul 5, 19:55 UTCJul 5, 21:25 UTC1h 30m
2026-07-05 OUA21 - Jul 5, 17:40 UTCJul 5, 18:30 UTC50m
2026-07-05 OUA21 - Jul 5, 13:25 UTCJul 5, 14:15 UTC50m
2026-07-04 OUA21 - Jul 4, 02:50 UTCJul 4, 04:35 UTC1h 45m
2026-07-03 OUA21 - Jul 3, 23:05 UTCJul 4, 00:40 UTC1h 35m
2026-07-03 OUA21 - Jul 3, 21:20 UTCJul 3, 22:15 UTC55m
2026-07-03 OUA21 - Jul 3, 12:50 UTCJul 3, 13:35 UTC45m
2026-07-03 OUA21 - Jul 3, 02:45 UTCJul 3, 03:30 UTC45m

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 N260U page for operator, model, and routing details .

Mode-S A280BF frequently asked

What is Mode-S code A280BF?
A280BF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N260U.
Where is Mode-S A280BF registered?
Mode-S code A280BF 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 A280BF broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A280BF, octal 50500277, decimal 10,649,791.
What flights does A280BF operate?
Mode-S A280BF has broadcast 1 distinct callsign, including OUA21.