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sensors Mode-S transponder

A19526

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N20053 · CESSNA 172 Skyhawk · operated by SPANAFLIGHT LLC

Hex
A19526
Octal
50312446
Decimal
10,589,478
Country
US
Tail
N20053
Type
C172
No current signal · last broadcast 5d ago
Flights observed
153
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A19526.

Country allocation

The ICAO 24-bit address A19526 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
N20053 - 153 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N20053 - Jul 26, 20:40 UTCJul 26, 20:55 UTC15m
2026-07-26 N20053 - Jul 26, 20:00 UTCJul 26, 20:10 UTC10m
2026-07-26 N20053 - Jul 26, 02:05 UTCJul 26, 02:25 UTC20m
2026-07-26 N20053 - Jul 26, 00:55 UTCJul 26, 01:20 UTC25m
2026-07-24 N20053 - Jul 24, 19:50 UTCJul 24, 21:55 UTC2h 5m
2026-07-23 N20053 - Jul 23, 22:50 UTCJul 23, 23:55 UTC1h 5m
2026-07-23 N20053 - Jul 23, 19:50 UTCJul 23, 21:45 UTC1h 55m
2026-07-23 N20053 - Jul 23, 00:45 UTCJul 23, 01:50 UTC1h 5m
2026-07-22 N20053 - Jul 22, 21:55 UTCJul 22, 22:55 UTC1h 0m
2026-07-22 N20053 - Jul 22, 17:45 UTCJul 22, 18:45 UTC1h 0m
2026-07-21 N20053 - Jul 21, 19:55 UTCJul 21, 20:50 UTC55m
2026-07-21 N20053 - Jul 21, 00:30 UTCJul 21, 01:50 UTC1h 20m
2026-07-20 N20053 - Jul 20, 20:25 UTCJul 20, 21:45 UTC1h 20m
2026-07-20 N20053 - Jul 20, 18:00 UTCJul 20, 19:45 UTC1h 45m
2026-07-20 N20053 - Jul 20, 16:15 UTCJul 20, 16:40 UTC25m
2026-07-19 N20053 - Jul 19, 21:25 UTCJul 19, 21:55 UTC30m
2026-07-19 N20053 - Jul 19, 19:05 UTCJul 19, 20:15 UTC1h 10m
2026-07-19 N20053 - Jul 19, 00:55 UTCJul 19, 01:35 UTC40m
2026-07-18 N20053 - Jul 18, 23:50 UTCJul 19, 00:10 UTC20m
2026-07-18 N20053 - Jul 18, 20:30 UTCJul 18, 21:40 UTC1h 10m
2026-07-18 N20053 - Jul 18, 19:35 UTCJul 18, 19:55 UTC20m
2026-07-17 N20053 - Jul 17, 15:40 UTCJul 17, 16:40 UTC1h 0m
2026-07-15 N20053 - Jul 15, 23:15 UTCJul 16, 00:10 UTC55m
2026-07-15 N20053 - Jul 15, 17:40 UTCJul 15, 18:30 UTC50m
2026-07-14 N20053 - Jul 14, 17:45 UTCJul 14, 18:50 UTC1h 5m
2026-07-14 N20053 - Jul 14, 15:50 UTCJul 14, 16:00 UTC10m
2026-07-13 N20053 - Jul 13, 17:30 UTCJul 13, 19:10 UTC1h 40m
2026-07-12 N20053 - Jul 12, 23:00 UTCJul 13, 00:10 UTC1h 10m
2026-07-12 N20053 - Jul 12, 19:45 UTCJul 12, 20:01 UTC15m
2026-07-11 N20053 - Jul 11, 22:40 UTCJul 11, 23:00 UTC20m
2026-07-11 N20053 - Jul 11, 19:25 UTCJul 11, 20:25 UTC1h 0m
2026-07-11 N20053 - Jul 11, 17:30 UTCJul 11, 18:30 UTC1h 0m
2026-07-10 N20053 - Jul 10, 19:45 UTCJul 10, 20:30 UTC45m
2026-07-10 N20053 - Jul 10, 17:40 UTCJul 10, 19:00 UTC1h 20m
2026-07-10 N20053 - Jul 10, 15:20 UTCJul 10, 16:20 UTC1h 0m
2026-07-10 N20053 - Jul 10, 02:35 UTCJul 10, 03:10 UTC35m
2026-07-09 N20053 - Jul 9, 19:35 UTCJul 9, 20:50 UTC1h 15m
2026-07-09 N20053 - Jul 9, 17:35 UTCJul 9, 18:25 UTC50m
2026-07-09 N20053 - Jul 9, 15:20 UTCJul 9, 16:20 UTC1h 0m
2026-07-08 N20053 - Jul 8, 23:20 UTCJul 9, 00:10 UTC50m
2026-07-07 N20053 - Jul 7, 21:55 UTCJul 7, 22:55 UTC1h 0m
2026-07-07 N20053 - Jul 7, 18:25 UTCJul 7, 19:25 UTC1h 0m
2026-07-07 N20053 - Jul 7, 15:20 UTCJul 7, 16:20 UTC1h 0m
2026-07-06 N20053 - Jul 6, 20:55 UTCJul 6, 21:55 UTC1h 0m
2026-07-06 N20053 - Jul 6, 17:55 UTCJul 6, 20:10 UTC2h 15m
2026-07-02 N20053 - Jul 2, 23:25 UTCJul 3, 00:30 UTC1h 5m
2026-07-02 N20053 - Jul 2, 17:25 UTCJul 2, 18:30 UTC1h 5m
2026-07-02 N20053 - Jul 2, 15:25 UTCJul 2, 16:30 UTC1h 5m
2026-07-02 N20053 - Jul 2, 01:25 UTCJul 2, 02:20 UTC55m
2026-07-01 N20053 - Jul 1, 23:00 UTCJul 2, 00:20 UTC1h 20m

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 N20053 page for operator, model, and routing details .

Mode-S A19526 frequently asked

What is Mode-S code A19526?
A19526 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N20053.
Where is Mode-S A19526 registered?
Mode-S code A19526 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 A19526 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A19526, octal 50312446, decimal 10,589,478.
What flights does A19526 operate?
Mode-S A19526 has broadcast 1 distinct callsign, including N20053.