Apparatus

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sensors Mode-S transponder

ABD2A9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N861BB · EMBRAER ERJ-145 · operated by CORPORATE FLIGHT MANAGEMENT DBA, CONTOUR AVIATION

Hex
ABD2A9
Octal
52751251
Decimal
11,260,585
Country
US
Tail
N861BB
Type
E145
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
357
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S ABD2A9.

Country allocation

The ICAO 24-bit address ABD2A9 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 20 distinct

Callsign Airline Flights Last seen
VTE3801 - 27 2026-07-19
VTE3802 - 20 2026-07-18
VTE3415 Corporate Flight Management 20 2026-06-09
VTE3934 - 19 2026-07-17
VTE3936 - 18 2026-07-14
VTE3804 - 18 2026-07-17
VTE3937 - 17 2026-07-16
VTE3417 Corporate Flight Management 16 2026-06-05
VTE3939 - 15 2026-07-17
VTE3418 Corporate Flight Management 15 2026-06-08
VTE3901 Corporate Flight Management 14 2026-06-24
VTE8861 - 13 2026-07-23
VTE3902 Corporate Flight Management 13 2026-06-23
VTE3803 - 13 2026-07-14
VTE3416 Corporate Flight Management 12 2026-06-05
VTE3904 - 10 2026-06-22
VTE3903 - 10 2026-06-22
VTE3908 Corporate Flight Management 9 2026-07-18
VTE3909 - 8 2026-07-18
VTE5423 Corporate Flight Management 5 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VTE3020 MBL → ORD Jul 26, 19:30 UTCJul 26, 20:05 UTC35m
2026-07-26 VTE3027 ORD → MBL Jul 26, 16:45 UTCJul 26, 17:20 UTC35m
2026-07-26 VTE3010 BRL → ORD Jul 26, 14:40 UTCJul 26, 15:05 UTC25m
2026-07-25 VTE3011 ORD → BRL Jul 25, 17:50 UTCJul 25, 18:15 UTC25m
2026-07-25 VTE3075 - Jul 25, 15:25 UTCJul 25, 15:50 UTC25m
2026-07-25 VTE3070 ORD → IRK Jul 25, 00:20 UTCJul 25, 01:05 UTC45m
2026-07-24 VTE3053 MWA → ORD Jul 24, 21:30 UTCJul 24, 22:30 UTC1h 0m
2026-07-24 VTE3052 ORD → MWA Jul 24, 16:50 UTCJul 24, 17:20 UTC30m
2026-07-24 VTE3051 - Jul 24, 13:55 UTCJul 24, 14:55 UTC1h 0m
2026-07-23 VTE8861 - Jul 23, 22:15 UTCJul 23, 23:00 UTC45m
2026-07-20 VTE8861 - Jul 20, 21:35 UTCJul 20, 21:45 UTC10m
2026-07-20 VTE3044 - Jul 20, 20:00 UTCJul 20, 20:50 UTC50m
2026-07-20 VTE3046 ORD → UIN Jul 20, 17:40 UTCJul 20, 18:15 UTC35m
2026-07-20 VTE3041 - Jul 20, 15:30 UTCJul 20, 16:10 UTC40m
2026-07-20 VTE3043 - Jul 20, 13:00 UTCJul 20, 13:55 UTC55m
2026-07-19 VTE3044 - Jul 19, 21:40 UTCJul 19, 22:30 UTC50m
2026-07-19 VTE3046 ORD → UIN Jul 19, 20:30 UTCJul 19, 20:55 UTC25m
2026-07-19 VTE3041 - Jul 19, 18:10 UTCJul 19, 18:45 UTC35m
2026-07-19 VTE3043 - Jul 19, 16:40 UTCJul 19, 17:30 UTC50m
2026-07-19 VTE8861 - Jul 19, 15:00 UTCJul 19, 15:55 UTC55m
2026-07-19 VTE3801 - Jul 19, 12:35 UTCJul 19, 13:30 UTC55m
2026-07-18 VTE3909 - Jul 18, 19:50 UTCJul 18, 20:40 UTC50m
2026-07-18 VTE3908 MSL → PNS Jul 18, 18:30 UTCJul 18, 18:50 UTC20m
2026-07-18 VTE3908 MSL → PNS Jul 18, 17:40 UTCJul 18, 17:55 UTC15m
2026-07-18 VTE3802 - Jul 18, 15:40 UTCJul 18, 16:30 UTC50m
2026-07-18 VTE3801 - Jul 18, 12:35 UTCJul 18, 13:40 UTC1h 5m
2026-07-17 VTE3804 - Jul 17, 22:49 UTCJul 17, 23:50 UTC1h 0m
2026-07-17 VTE3939 - Jul 17, 19:30 UTCJul 17, 20:50 UTC1h 20m
2026-07-17 VTE3934 - Jul 17, 16:00 UTCJul 17, 17:05 UTC1h 5m
2026-07-17 VTE3801 - Jul 17, 12:50 UTCJul 17, 13:55 UTC1h 5m
2026-07-16 VTE3804 - Jul 16, 23:59 UTCJul 17, 01:05 UTC1h 5m
2026-07-16 VTE3939 - Jul 16, 21:15 UTCJul 16, 22:19 UTC1h 5m
2026-07-16 VTE3934 - Jul 16, 15:55 UTCJul 16, 16:49 UTC55m
2026-07-16 VTE3937 - Jul 16, 10:29 UTCJul 16, 11:45 UTC1h 15m
2026-07-15 VTE3930 - Jul 15, 19:45 UTCJul 15, 20:45 UTC1h 0m
2026-07-15 VTE3935 - Jul 15, 17:25 UTCJul 15, 18:25 UTC1h 0m
2026-07-15 VTE3934 - Jul 15, 14:25 UTCJul 15, 15:25 UTC1h 0m
2026-07-15 VTE3937 - Jul 15, 10:35 UTCJul 15, 11:55 UTC1h 20m
2026-07-14 VTE3936 - Jul 14, 20:50 UTCJul 14, 21:50 UTC1h 0m
2026-07-14 VTE3803 - Jul 14, 18:05 UTCJul 14, 19:25 UTC1h 20m
2026-07-14 VTE3802 - Jul 14, 15:35 UTCJul 14, 16:35 UTC1h 0m
2026-07-14 VTE3801 - Jul 14, 13:05 UTCJul 14, 14:15 UTC1h 10m
2026-07-13 VTE3804 - Jul 13, 23:55 UTCJul 14, 00:45 UTC50m
2026-07-13 VTE3939 - Jul 13, 19:25 UTCJul 13, 20:40 UTC1h 15m
2026-07-13 VTE3934 - Jul 13, 15:50 UTCJul 13, 16:55 UTC1h 5m
2026-07-13 VTE3801 - Jul 13, 12:45 UTCJul 13, 14:10 UTC1h 25m
2026-07-13 VTE3804 - Jul 13, 00:10 UTCJul 13, 01:05 UTC55m
2026-07-12 VTE3939 - Jul 12, 19:20 UTCJul 12, 20:35 UTC1h 15m
2026-07-12 VTE3934 - Jul 12, 15:55 UTCJul 12, 16:50 UTC55m
2026-07-12 VTE3801 - Jul 12, 12:30 UTCJul 12, 13:30 UTC1h 0m

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 N861BB page for operator, model, and routing details .

Mode-S ABD2A9 frequently asked

What is Mode-S code ABD2A9?
ABD2A9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N861BB.
Where is Mode-S ABD2A9 registered?
Mode-S code ABD2A9 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 ABD2A9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABD2A9, octal 52751251, decimal 11,260,585.
What flights does ABD2A9 operate?
Mode-S ABD2A9 has broadcast 20 distinct callsigns, including VTE3801, VTE3802, VTE3415, VTE3934, VTE3936.