sensors Mode-S transponder

A654AE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N507HP · CESSNA 525A Citation CJ2 · operated by TIGERSHARK JET LLC, AVION FLIGHT LLC

Hex
A654AE
Octal
51452256
Decimal
10,900,654
Country
US
Tail
N507HP
Type
C25A
Broadcasting now · callsign N507HP · 10,825 ft
Flights observed
35
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 19:25 UTC

Current position

A654AE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A654AE 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
N507HP - 35 2026-07-26

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-07-26 N507HP - Jul 26, 18:30 UTCJul 26, 19:25 UTC55m
2026-07-26 N507HP - Jul 26, 14:45 UTCJul 26, 16:10 UTC1h 25m
2026-07-21 N507HP - Jul 21, 21:45 UTCJul 21, 23:10 UTC1h 25m
2026-07-21 N507HP - Jul 21, 20:20 UTCJul 21, 20:50 UTC30m
2026-07-19 N507HP - Jul 19, 15:45 UTCJul 19, 16:15 UTC30m
2026-07-19 N507HP - Jul 19, 13:30 UTCJul 19, 14:20 UTC50m
2026-07-17 N507HP - Jul 17, 17:40 UTCJul 17, 18:44 UTC1h 5m
2026-07-17 N507HP - Jul 17, 13:05 UTCJul 17, 13:50 UTC45m
2026-07-17 N507HP - Jul 17, 12:04 UTCJul 17, 12:15 UTC10m
2026-07-12 N507HP - Jul 12, 22:05 UTCJul 12, 22:40 UTC35m
2026-07-12 N507HP - Jul 12, 12:25 UTCJul 12, 12:50 UTC25m
2026-07-05 N507HP - Jul 5, 18:15 UTCJul 5, 19:05 UTC50m
2026-07-05 N507HP - Jul 5, 16:05 UTCJul 5, 17:25 UTC1h 20m
2026-07-02 N507HP - Jul 2, 18:05 UTCJul 2, 19:25 UTC1h 20m
2026-07-02 N507HP - Jul 2, 16:25 UTCJul 2, 17:10 UTC45m
2026-07-02 N507HP - Jul 2, 13:15 UTCJul 2, 13:30 UTC15m
2026-06-29 N507HP - Jun 29, 19:15 UTCJun 29, 20:04 UTC50m
2026-06-28 N507HP - Jun 28, 12:50 UTCJun 28, 13:34 UTC45m
2026-06-28 N507HP - Jun 28, 11:45 UTCJun 28, 11:59 UTC15m
2026-06-28 N507HP - Jun 28, 10:44 UTCJun 28, 10:55 UTC10m
2026-06-26 N507HP - Jun 26, 16:05 UTCJun 26, 17:54 UTC1h 50m
2026-06-24 N507HP - Jun 24, 13:00 UTCJun 24, 14:55 UTC1h 55m
2026-06-21 N507HP - Jun 21, 17:54 UTCJun 21, 18:25 UTC30m
2026-06-15 N507HP - Jun 15, 14:55 UTCJun 15, 15:35 UTC40m
2026-06-07 N507HP - Jun 7, 17:00 UTCJun 7, 18:55 UTC1h 55m
2026-06-04 N507HP - Jun 4, 12:55 UTCJun 4, 14:15 UTC1h 20m
2026-06-02 N507HP - Jun 2, 15:30 UTCJun 2, 15:50 UTC20m
2026-06-02 N507HP - Jun 2, 12:55 UTCJun 2, 13:10 UTC15m
2026-05-16 N507HP - May 16, 14:11 UTCMay 16, 16:10 UTC2h 0m
2026-05-12 N507HP - May 12, 19:05 UTCMay 12, 20:50 UTC1h 45m
2026-05-01 N507HP - May 1, 14:45 UTCMay 1, 15:30 UTC45m
2026-04-30 N507HP - Apr 30, 17:20 UTCApr 30, 18:10 UTC50m
2026-04-24 N507HP - Apr 24, 13:00 UTCApr 24, 16:05 UTC3h 5m
2026-04-23 N507HP - Apr 23, 13:00 UTCApr 23, 14:20 UTC1h 20m
2026-04-21 N507HP - Apr 21, 19:45 UTCApr 21, 21:25 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 N507HP page for operator, model, and routing details .

Mode-S A654AE frequently asked

What is Mode-S code A654AE?
A654AE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N507HP.
Where is Mode-S A654AE registered?
Mode-S code A654AE 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 A654AE broadcasting right now?
Yes. Mode-S A654AE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A654AE, octal 51452256, decimal 10,900,654.
What flights does A654AE operate?
Mode-S A654AE has broadcast 1 distinct callsign, including N507HP.