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sensors Mode-S transponder

A98519

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N712SP · CESSNA 172 Skyhawk · operated by AMERIFLYERS OF TEXAS INC

Hex
A98519
Octal
52302431
Decimal
11,109,657
Country
US
Tail
N712SP
Type
C172
Broadcasting now · callsign N712SP · 2,900 ft
Flights observed
197
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Current position

A98519 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A98519 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
N712SP - 197 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 N712SP - Jul 19, 01:05 UTCJul 19, 02:15 UTC1h 10m
2026-07-18 N712SP - Jul 18, 21:50 UTCJul 19, 00:20 UTC2h 30m
2026-07-18 N712SP - Jul 18, 15:00 UTCJul 18, 18:20 UTC3h 20m
2026-07-18 N712SP - Jul 18, 11:20 UTCJul 18, 13:45 UTC2h 25m
2026-07-17 N712SP PPM → PPM Jul 17, 16:59 UTCJul 17, 18:44 UTC1h 45m
2026-07-17 N712SP - Jul 17, 15:00 UTCJul 17, 15:35 UTC35m
2026-07-17 N712SP - Jul 17, 13:25 UTCJul 17, 13:50 UTC25m
2026-07-17 N712SP PPM → PPM Jul 17, 01:29 UTCJul 17, 02:54 UTC1h 25m
2026-07-16 N712SP PPM → PPM Jul 16, 21:00 UTCJul 16, 22:45 UTC1h 45m
2026-07-16 N712SP - Jul 16, 17:49 UTCJul 16, 18:40 UTC50m
2026-07-16 N712SP - Jul 16, 16:49 UTCJul 16, 17:10 UTC20m
2026-07-16 N712SP - Jul 16, 14:10 UTCJul 16, 15:40 UTC1h 30m
2026-07-15 N712SP - Jul 15, 23:00 UTCJul 15, 23:45 UTC45m
2026-07-15 N712SP - Jul 15, 21:35 UTCJul 15, 22:25 UTC50m
2026-07-15 N712SP PPM → PPM Jul 15, 19:05 UTCJul 15, 20:25 UTC1h 20m
2026-07-15 N712SP - Jul 15, 16:55 UTCJul 15, 17:35 UTC40m
2026-07-15 N712SP - Jul 15, 15:20 UTCJul 15, 16:00 UTC40m
2026-07-14 N712SP - Jul 14, 20:50 UTCJul 14, 23:15 UTC2h 24m
2026-07-14 N712SP - Jul 14, 16:45 UTCJul 14, 18:20 UTC1h 35m
2026-07-13 N712SP - Jul 13, 22:05 UTCJul 13, 22:50 UTC45m
2026-07-13 N712SP - Jul 13, 20:40 UTCJul 13, 21:30 UTC50m
2026-07-12 N712SP - Jul 12, 15:45 UTCJul 12, 16:55 UTC1h 10m
2026-07-11 N712SP - Jul 11, 19:45 UTCJul 11, 20:50 UTC1h 5m
2026-07-11 N712SP - Jul 11, 18:30 UTCJul 11, 19:15 UTC45m
2026-07-11 N712SP - Jul 11, 01:20 UTCJul 11, 02:35 UTC1h 15m
2026-07-10 N712SP - Jul 10, 22:10 UTCJul 10, 23:40 UTC1h 30m
2026-07-10 N712SP PPM → PPM Jul 10, 14:40 UTCJul 10, 15:45 UTC1h 5m
2026-07-09 N712SP - Jul 9, 19:30 UTCJul 9, 22:15 UTC2h 45m
2026-07-09 N712SP - Jul 9, 12:55 UTCJul 9, 13:50 UTC55m
2026-07-09 N712SP - Jul 9, 10:50 UTCJul 9, 11:45 UTC55m
2026-07-08 N712SP - Jul 8, 21:55 UTCJul 8, 23:40 UTC1h 45m
2026-07-08 N712SP - Jul 8, 19:30 UTCJul 8, 19:55 UTC25m
2026-07-08 N712SP - Jul 8, 17:40 UTCJul 8, 18:40 UTC1h 0m
2026-07-08 N712SP PPM → PPM Jul 8, 14:45 UTCJul 8, 15:35 UTC50m
2026-07-08 N712SP - Jul 8, 00:20 UTCJul 8, 01:15 UTC55m
2026-07-07 N712SP - Jul 7, 21:05 UTCJul 7, 23:20 UTC2h 15m
2026-07-07 N712SP - Jul 7, 17:45 UTCJul 7, 19:35 UTC1h 50m
2026-07-07 N712SP - Jul 7, 16:30 UTCJul 7, 16:45 UTC15m
2026-07-07 N712SP - Jul 7, 14:55 UTCJul 7, 15:35 UTC40m
2026-07-07 N712SP - Jul 7, 12:20 UTCJul 7, 14:05 UTC1h 45m
2026-07-06 N712SP PPM → PPM Jul 6, 17:50 UTCJul 6, 18:35 UTC45m
2026-07-06 N712SP - Jul 6, 16:20 UTCJul 6, 16:50 UTC30m
2026-07-06 N712SP - Jul 6, 14:45 UTCJul 6, 15:30 UTC45m
2026-07-06 N712SP - Jul 6, 13:05 UTCJul 6, 13:55 UTC50m
2026-07-06 N712SP - Jul 6, 11:45 UTCJul 6, 12:30 UTC45m
2026-07-05 N712SP - Jul 5, 13:40 UTCJul 5, 14:55 UTC1h 15m
2026-07-03 N712SP PPM → PPM Jul 3, 10:35 UTCJul 3, 12:50 UTC2h 15m
2026-07-02 N712SP - Jul 2, 16:55 UTCJul 2, 19:20 UTC2h 25m
2026-07-02 N712SP - Jul 2, 15:15 UTCJul 2, 15:45 UTC30m
2026-07-02 N712SP - Jul 2, 13:45 UTCJul 2, 14:10 UTC25m

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 N712SP page for operator, model, and routing details .

Mode-S A98519 frequently asked

What is Mode-S code A98519?
A98519 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N712SP.
Where is Mode-S A98519 registered?
Mode-S code A98519 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 A98519 broadcasting right now?
Yes. Mode-S A98519 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A98519, octal 52302431, decimal 11,109,657.
What flights does A98519 operate?
Mode-S A98519 has broadcast 1 distinct callsign, including N712SP.