Apparatus

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sensors Mode-S transponder

A20155

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N22818 · operated by CAREER PILOT TRAINING LLC

Hex
A20155
Octal
50400525
Decimal
10,617,173
Country
US
Tail
N22818
Type
C172
Broadcasting now · callsign CXK189 · 3,250 ft
Flights observed
156
Distinct callsigns
1
Country
US
Last broadcast
8m ago

Current position

A20155 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A20155 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
CXK189 - 156 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CXK189 - Jul 14, 14:10 UTCJul 14, 15:15 UTC1h 5m
2026-07-14 CXK189 - Jul 14, 12:30 UTCJul 14, 12:50 UTC20m
2026-07-14 CXK189 PWK → PWK Jul 14, 10:00 UTCJul 14, 11:35 UTC1h 35m
2026-07-14 CXK189 - Jul 14, 00:35 UTCJul 14, 01:25 UTC50m
2026-07-13 CXK189 - Jul 13, 21:25 UTCJul 13, 22:30 UTC1h 5m
2026-07-13 CXK189 PWK → PWK Jul 13, 12:40 UTCJul 13, 14:35 UTC1h 55m
2026-07-12 CXK189 PWK → PWK Jul 12, 23:45 UTCJul 13, 00:45 UTC1h 0m
2026-07-12 CXK189 - Jul 12, 21:10 UTCJul 12, 22:20 UTC1h 10m
2026-07-11 CXK189 - Jul 11, 16:40 UTCJul 11, 17:35 UTC55m
2026-07-11 CXK189 PWK → PWK Jul 11, 10:20 UTCJul 11, 13:00 UTC2h 40m
2026-07-10 CXK189 - Jul 10, 21:10 UTCJul 10, 21:35 UTC25m
2026-07-10 CXK189 - Jul 10, 12:00 UTCJul 10, 13:30 UTC1h 30m
2026-07-10 CXK189 PWK → DBQ Jul 10, 09:40 UTCJul 10, 11:10 UTC1h 30m
2026-07-09 CXK189 - Jul 9, 16:30 UTCJul 9, 16:50 UTC20m
2026-07-09 CXK189 - Jul 9, 13:15 UTCJul 9, 15:00 UTC1h 45m
2026-07-09 CXK189 PWK → PWK Jul 9, 11:40 UTCJul 9, 12:05 UTC25m
2026-07-09 CXK189 PWK → PWK Jul 9, 10:35 UTCJul 9, 11:00 UTC25m
2026-07-08 CXK189 - Jul 8, 22:55 UTCJul 9, 00:30 UTC1h 35m
2026-07-08 CXK189 - Jul 8, 21:30 UTCJul 8, 22:05 UTC35m
2026-07-08 CXK189 PWK → PWK Jul 8, 18:15 UTCJul 8, 19:50 UTC1h 35m
2026-07-08 CXK189 PWK → PWK Jul 8, 00:55 UTCJul 8, 02:10 UTC1h 15m
2026-07-07 CXK189 - Jul 7, 19:50 UTCJul 7, 23:10 UTC3h 20m
2026-07-07 CXK189 - Jul 7, 16:30 UTCJul 7, 16:50 UTC20m
2026-07-05 CXK189 DBQ → PWK Jul 5, 23:00 UTCJul 6, 00:25 UTC1h 25m
2026-07-05 CXK189 - Jul 5, 19:55 UTCJul 5, 21:15 UTC1h 20m
2026-07-04 CXK189 - Jul 4, 14:50 UTCJul 4, 16:35 UTC1h 45m
2026-07-04 CXK189 - Jul 4, 12:40 UTCJul 4, 14:00 UTC1h 20m
2026-07-02 CXK189 - Jul 2, 23:55 UTCJul 3, 00:40 UTC45m
2026-07-02 CXK189 PWK → PWK Jul 2, 22:00 UTCJul 2, 22:40 UTC40m
2026-07-02 CXK189 PWK → PWK Jul 2, 18:40 UTCJul 2, 20:10 UTC1h 30m
2026-07-02 CXK189 - Jul 2, 01:05 UTCJul 2, 01:50 UTC45m
2026-07-01 CXK189 - Jul 1, 23:55 UTCJul 2, 00:25 UTC30m
2026-07-01 CXK189 PWK → PWK Jul 1, 02:50 UTCJul 1, 04:00 UTC1h 10m
2026-06-30 CXK189 PWK → PWK Jun 30, 04:25 UTCJun 30, 07:05 UTC2h 40m
2026-06-30 CXK189 PWK → PWK Jun 30, 03:10 UTCJun 30, 03:40 UTC30m
2026-06-29 CXK189 - Jun 29, 17:59 UTCJun 29, 18:14 UTC15m
2026-06-29 CXK189 - Jun 29, 15:39 UTCJun 29, 15:54 UTC15m
2026-06-28 CXK189 PWK → PWK Jun 28, 18:55 UTCJun 28, 20:45 UTC1h 50m
2026-06-28 CXK189 - Jun 28, 12:29 UTCJun 28, 13:19 UTC50m
2026-06-27 CXK189 PWK → PWK Jun 27, 00:05 UTCJun 27, 01:39 UTC1h 35m
2026-06-26 CXK189 - Jun 26, 16:05 UTCJun 26, 17:09 UTC1h 5m
2026-06-26 CXK189 - Jun 26, 12:55 UTCJun 26, 14:05 UTC1h 10m
2026-06-26 CXK189 - Jun 26, 09:50 UTCJun 26, 11:05 UTC1h 15m
2026-06-25 CXK189 - Jun 25, 21:15 UTCJun 26, 00:10 UTC2h 55m
2026-06-24 CXK189 FSD → FCM Jun 24, 19:29 UTCJun 24, 20:54 UTC1h 25m
2026-06-24 CXK189 FCM → FSD Jun 24, 12:30 UTCJun 24, 14:20 UTC1h 50m
2026-05-30 CXK189 FCM → FCM May 30, 13:15 UTCMay 30, 14:45 UTC1h 30m
2026-05-29 CXK189 FCM → FCM May 29, 18:05 UTCMay 29, 20:50 UTC2h 45m
2026-05-29 CXK189 - May 29, 14:05 UTCMay 29, 14:45 UTC40m
2026-05-29 CXK189 - May 29, 12:55 UTCMay 29, 13:35 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 N22818 page for operator, model, and routing details .

Mode-S A20155 frequently asked

What is Mode-S code A20155?
A20155 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N22818.
Where is Mode-S A20155 registered?
Mode-S code A20155 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 A20155 broadcasting right now?
Yes. Mode-S A20155 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A20155, octal 50400525, decimal 10,617,173.
What flights does A20155 operate?
Mode-S A20155 has broadcast 1 distinct callsign, including CXK189.