sensors Mode-S transponder

ABA17B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N849CA · operated by COLUMBIA AIRCRAFT SALES INC

Hex
ABA17B
Octal
52720573
Decimal
11,247,995
Country
US
Tail
N849CA
No current signal · last broadcast 1d ago
Flights observed
34
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ABA17B.

Country allocation

The ICAO 24-bit address ABA17B 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
N849CA - 34 2026-07-13

Recent flights last 34

DateFlightRouteTakeoffLandingDuration
2026-07-13 N849CA - Jul 13, 17:20 UTCJul 13, 19:35 UTC2h 15m
2026-07-13 N849CA - Jul 13, 11:40 UTCJul 13, 12:30 UTC50m
2026-07-10 N849CA - Jul 10, 20:00 UTCJul 10, 22:55 UTC2h 55m
2026-07-07 N849CA - Jul 7, 11:25 UTCJul 7, 14:15 UTC2h 50m
2026-07-01 N849CA - Jul 1, 19:15 UTCJul 1, 19:35 UTC20m
2026-07-01 N849CA - Jul 1, 16:50 UTCJul 1, 18:45 UTC1h 55m
2026-07-01 N849CA - Jul 1, 15:00 UTCJul 1, 15:45 UTC45m
2026-06-30 N849CA - Jun 30, 23:45 UTCJul 1, 00:35 UTC50m
2026-06-30 N849CA - Jun 30, 15:05 UTCJun 30, 15:35 UTC30m
2026-06-30 N849CA - Jun 30, 13:20 UTCJun 30, 14:25 UTC1h 5m
2026-06-29 N849CA - Jun 29, 17:24 UTCJun 29, 17:40 UTC15m
2026-06-29 N849CA - Jun 29, 16:10 UTCJun 29, 16:50 UTC40m
2026-06-29 N849CA - Jun 29, 14:19 UTCJun 29, 15:14 UTC55m
2026-06-26 N849CA - Jun 26, 17:59 UTCJun 26, 20:44 UTC2h 45m
2026-06-23 N849CA - Jun 23, 17:50 UTCJun 23, 20:19 UTC2h 30m
2026-06-23 N849CA - Jun 23, 14:59 UTCJun 23, 15:44 UTC45m
2026-06-22 N849CA - Jun 22, 14:55 UTCJun 22, 15:14 UTC20m
2026-06-22 N849CA - Jun 22, 12:19 UTCJun 22, 12:40 UTC20m
2026-06-16 N849CA - Jun 16, 06:25 UTCJun 16, 07:34 UTC1h 10m
2026-06-11 N849CA - Jun 11, 13:05 UTCJun 11, 14:25 UTC1h 20m
2026-06-09 N849CA ABE → GON Jun 9, 13:35 UTCJun 9, 14:40 UTC1h 5m
2026-06-09 N849CA - Jun 9, 12:15 UTCJun 9, 12:55 UTC40m
2026-06-04 N849CA - Jun 4, 15:55 UTCJun 4, 16:15 UTC20m
2026-06-04 N849CA - Jun 4, 15:00 UTCJun 4, 15:15 UTC15m
2026-06-02 N849CA - Jun 2, 15:25 UTCJun 2, 16:15 UTC50m
2026-05-26 N849CA - May 26, 18:30 UTCMay 26, 21:09 UTC2h 40m
2026-05-26 N849CA - May 26, 12:54 UTCMay 26, 13:45 UTC50m
2026-05-26 N849CA - May 26, 10:54 UTCMay 26, 12:20 UTC1h 25m
2026-05-22 N849CA - May 22, 18:50 UTCMay 22, 19:45 UTC55m
2026-05-22 N849CA - May 22, 16:40 UTCMay 22, 17:35 UTC55m
2026-05-22 N849CA - May 22, 14:20 UTCMay 22, 15:30 UTC1h 10m
2026-05-18 N849CA - May 18, 12:15 UTCMay 18, 12:55 UTC40m
2026-05-15 N849CA - May 15, 17:15 UTCMay 15, 18:25 UTC1h 10m
2026-05-13 N849CA - May 13, 13:55 UTCMay 13, 14:15 UTC20m

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 N849CA page for operator, model, and routing details .

Mode-S ABA17B frequently asked

What is Mode-S code ABA17B?
ABA17B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N849CA.
Where is Mode-S ABA17B registered?
Mode-S code ABA17B 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 ABA17B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABA17B, octal 52720573, decimal 11,247,995.
What flights does ABA17B operate?
Mode-S ABA17B has broadcast 1 distinct callsign, including N849CA.