Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AAA98A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78623 · CESSNA 172 Skyhawk · operated by LAUREL HIGHLANDS AERONAUTICAL ACADEMY

Hex
AAA98A
Octal
52524612
Decimal
11,184,522
Country
US
Tail
N78623
Type
C172
No current signal · last broadcast 9h ago
Flights observed
118
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S AAA98A.

Country allocation

The ICAO 24-bit address AAA98A 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
N78623 - 118 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N78623 - Jul 13, 22:40 UTCJul 13, 23:15 UTC35m
2026-07-13 N78623 - Jul 13, 18:15 UTCJul 13, 19:45 UTC1h 30m
2026-07-13 N78623 - Jul 13, 14:50 UTCJul 13, 16:10 UTC1h 20m
2026-07-13 N78623 - Jul 13, 12:45 UTCJul 13, 13:45 UTC1h 0m
2026-07-12 N78623 - Jul 12, 22:15 UTCJul 12, 22:55 UTC40m
2026-07-12 N78623 - Jul 12, 19:30 UTCJul 12, 20:25 UTC55m
2026-07-12 N78623 - Jul 12, 16:45 UTCJul 12, 17:30 UTC45m
2026-07-09 N78623 - Jul 9, 17:35 UTCJul 9, 17:55 UTC20m
2026-07-08 N78623 - Jul 8, 15:05 UTCJul 8, 16:25 UTC1h 20m
2026-07-04 N78623 - Jul 4, 15:40 UTCJul 4, 15:55 UTC15m
2026-07-04 N78623 - Jul 4, 14:05 UTCJul 4, 15:35 UTC1h 30m
2026-07-03 N78623 - Jul 3, 18:30 UTCJul 3, 19:15 UTC45m
2026-07-03 N78623 - Jul 3, 14:30 UTCJul 3, 15:20 UTC50m
2026-07-02 N78623 - Jul 2, 22:15 UTCJul 2, 22:50 UTC35m
2026-07-02 N78623 - Jul 2, 17:35 UTCJul 2, 18:25 UTC50m
2026-07-02 N78623 - Jul 2, 15:40 UTCJul 2, 16:30 UTC50m
2026-07-01 N78623 - Jul 1, 13:35 UTCJul 1, 14:20 UTC45m
2026-06-30 N78623 - Jun 30, 22:50 UTCJun 30, 23:40 UTC50m
2026-06-30 N78623 - Jun 30, 18:15 UTCJun 30, 18:50 UTC35m
2026-06-30 N78623 - Jun 30, 15:00 UTCJun 30, 16:40 UTC1h 40m
2026-06-30 N78623 - Jun 30, 12:15 UTCJun 30, 13:45 UTC1h 30m
2026-06-29 N78623 - Jun 29, 21:50 UTCJun 29, 22:19 UTC30m
2026-06-24 N78623 - Jun 24, 18:55 UTCJun 24, 19:39 UTC45m
2026-06-23 N78623 - Jun 23, 20:34 UTCJun 23, 21:24 UTC50m
2026-06-23 N78623 - Jun 23, 13:45 UTCJun 23, 14:35 UTC50m
2026-06-20 N78623 - Jun 20, 12:34 UTCJun 20, 13:34 UTC1h 0m
2026-06-17 N78623 - Jun 17, 18:50 UTCJun 17, 19:40 UTC50m
2026-06-16 N78623 - Jun 16, 18:39 UTCJun 16, 20:30 UTC1h 51m
2026-06-16 N78623 - Jun 16, 14:50 UTCJun 16, 15:09 UTC20m
2026-06-15 N78623 - Jun 15, 17:34 UTCJun 15, 18:25 UTC50m
2026-06-15 N78623 - Jun 15, 15:25 UTCJun 15, 15:55 UTC30m
2026-06-13 N78623 - Jun 13, 18:50 UTCJun 13, 19:10 UTC20m
2026-06-13 N78623 - Jun 13, 14:05 UTCJun 13, 14:25 UTC20m
2026-06-13 N78623 - Jun 13, 12:40 UTCJun 13, 13:00 UTC20m
2026-06-09 N78623 - Jun 9, 00:35 UTCJun 9, 01:00 UTC25m
2026-06-08 N78623 - Jun 8, 23:30 UTCJun 9, 00:00 UTC30m
2026-06-08 N78623 - Jun 8, 20:00 UTCJun 8, 21:00 UTC1h 0m
2026-06-08 N78623 - Jun 8, 18:40 UTCJun 8, 19:00 UTC20m
2026-06-08 N78623 - Jun 8, 14:40 UTCJun 8, 15:20 UTC40m
2026-06-08 N78623 - Jun 8, 14:25 UTCJun 8, 14:35 UTC10m
2026-06-08 N78623 - Jun 8, 13:55 UTCJun 8, 14:20 UTC25m
2026-06-05 N78623 - Jun 5, 15:05 UTCJun 5, 16:25 UTC1h 20m
2026-06-05 N78623 - Jun 5, 00:30 UTCJun 5, 01:05 UTC35m
2026-06-04 N78623 - Jun 4, 23:15 UTCJun 4, 23:35 UTC20m
2026-06-04 N78623 - Jun 4, 22:05 UTCJun 4, 22:35 UTC30m
2026-06-04 N78623 - Jun 4, 19:45 UTCJun 4, 21:00 UTC1h 15m
2026-06-04 N78623 - Jun 4, 16:40 UTCJun 4, 17:20 UTC40m
2026-06-03 N78623 - Jun 3, 19:25 UTCJun 3, 20:50 UTC1h 25m
2026-06-03 N78623 - Jun 3, 16:30 UTCJun 3, 17:05 UTC35m
2026-06-02 N78623 - Jun 2, 18:00 UTCJun 2, 18:40 UTC40m

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 N78623 page for operator, model, and routing details .

Mode-S AAA98A frequently asked

What is Mode-S code AAA98A?
AAA98A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78623.
Where is Mode-S AAA98A registered?
Mode-S code AAA98A 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 AAA98A broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA98A, octal 52524612, decimal 11,184,522.
What flights does AAA98A operate?
Mode-S AAA98A has broadcast 1 distinct callsign, including N78623.