sensors Mode-S transponder

AAB243

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N789DC · operated by BOMBARDIER AEROSPACE CORP

Hex
AAB243
Octal
52531103
Decimal
11,186,755
Country
US
Tail
N789DC
No current signal · last broadcast 12d ago
Flights observed
38
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S AAB243.

Country allocation

The ICAO 24-bit address AAB243 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
NJM789 - 38 2026-05-17

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-05-17 NJM789 - May 17, 17:55 UTCMay 17, 18:25 UTC30m
2026-05-17 NJM789 - May 17, 15:15 UTCMay 17, 17:05 UTC1h 50m
2026-05-16 NJM789 - May 16, 19:15 UTCMay 16, 20:30 UTC1h 15m
2026-05-16 NJM789 IAD → BHB May 16, 16:35 UTCMay 16, 17:55 UTC1h 20m
2026-05-16 NJM789 - May 16, 13:51 UTCMay 16, 15:05 UTC1h 15m
2026-05-13 NJM789 YYZ → GRR May 13, 18:20 UTCMay 13, 19:10 UTC50m
2026-05-13 NJM789 - May 13, 16:05 UTCMay 13, 16:55 UTC50m
2026-05-12 NJM789 - May 12, 03:30 UTCMay 12, 04:30 UTC1h 0m
2026-05-11 NJM789 - May 11, 21:35 UTCMay 11, 22:35 UTC59m
2026-05-11 NJM789 - May 11, 19:40 UTCMay 11, 20:10 UTC30m
2026-05-10 NJM789 - May 10, 16:50 UTCMay 10, 19:09 UTC2h 20m
2026-05-10 NJM789 - May 10, 15:05 UTCMay 10, 15:39 UTC35m
2026-05-10 NJM789 - May 10, 11:45 UTCMay 10, 13:10 UTC1h 25m
2026-05-07 NJM789 - May 7, 13:25 UTCMay 7, 14:50 UTC1h 25m
2026-05-03 NJM789 - May 3, 19:34 UTCMay 3, 22:09 UTC2h 35m
2026-05-03 NJM789 - May 3, 18:09 UTCMay 3, 18:55 UTC45m
2026-05-01 NJM789 - May 1, 21:50 UTCMay 2, 00:05 UTC2h 15m
2026-04-28 NJM789 ORL → DPA Apr 28, 14:10 UTCApr 28, 16:25 UTC2h 15m
2026-04-27 NJM789 - Apr 27, 12:45 UTCApr 27, 13:25 UTC40m
2026-04-26 NJM789 - Apr 26, 21:50 UTCApr 26, 22:20 UTC30m
2026-04-26 NJM789 - Apr 26, 18:50 UTCApr 26, 20:55 UTC2h 5m
2026-04-23 NJM789 - Apr 23, 20:25 UTCApr 23, 21:50 UTC1h 25m
2026-04-23 NJM789 - Apr 23, 14:55 UTCApr 23, 17:30 UTC2h 35m
2026-04-17 NJM789 - Apr 17, 22:35 UTCApr 17, 23:15 UTC40m
2026-04-17 NJM789 - Apr 17, 21:25 UTCApr 17, 22:05 UTC40m
2026-04-17 NJM789 - Apr 17, 19:40 UTCApr 17, 21:20 UTC1h 40m
2026-04-15 NJM789 - Apr 15, 21:05 UTCApr 15, 22:25 UTC1h 20m
2026-04-15 NJM789 - Apr 15, 19:50 UTCApr 15, 21:00 UTC1h 10m
2026-04-15 NJM789 - Apr 15, 17:05 UTCApr 15, 18:20 UTC1h 15m
2026-04-15 NJM789 - Apr 15, 15:05 UTCApr 15, 17:00 UTC1h 55m
2026-04-15 NJM789 - Apr 15, 14:15 UTCApr 15, 14:55 UTC39m
2026-04-15 NJM789 - Apr 15, 00:55 UTCApr 15, 01:40 UTC45m
2026-04-13 NJM789 PSP → TUS Apr 13, 22:40 UTCApr 13, 23:35 UTC55m
2026-04-13 NJM789 - Apr 13, 21:15 UTCApr 13, 22:05 UTC50m
2026-04-13 NJM789 - Apr 13, 19:50 UTCApr 13, 20:30 UTC40m
2026-04-13 NJM789 - Apr 13, 17:05 UTCApr 13, 20:10 UTC3h 5m
2026-04-13 NJM789 - Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 NJM789 - Apr 13, 13:25 UTCApr 13, 16:00 UTC2h 35m

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 N789DC page for operator, model, and routing details .

Mode-S AAB243 frequently asked

What is Mode-S code AAB243?
AAB243 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N789DC.
Where is Mode-S AAB243 registered?
Mode-S code AAB243 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 AAB243 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAB243, octal 52531103, decimal 11,186,755.
What flights does AAB243 operate?
Mode-S AAB243 has broadcast 1 distinct callsign, including NJM789.