sensors Mode-S transponder

A3D3B3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N346BB · operated by AMERICAN AIRLINES INC

Hex
A3D3B3
Octal
50751663
Decimal
10,736,563
Country
US
Tail
N346BB
No current signal · last broadcast 4h ago
Flights observed
694
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A3D3B3.

Country allocation

The ICAO 24-bit address A3D3B3 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
ENY4128 Envoy Air 10 2026-05-23
ENY3371 Envoy Air 9 2026-07-03
ENY4230 - 7 2026-06-20
ENY4155 Envoy Air 7 2026-04-29
ENY4116 Envoy Air 7 2026-05-01
ENY4060 - 7 2026-06-29
ENY3967 - 7 2026-06-30
ENY3802 Envoy Air 7 2026-05-06
ENY3729 - 7 2026-07-08
ENY3392 - 7 2026-07-01
ENY4202 Envoy Air 6 2026-04-29
ENY4095 - 6 2026-07-05
ENY3986 - 6 2026-07-01
ENY3964 Envoy Air 6 2026-06-15
ENY3918 - 6 2026-07-14
ENY3628 - 6 2026-07-12
ENY3504 - 6 2026-07-01
ENY3442 Envoy Air 6 2026-06-20
ENY3344 - 6 2026-06-30
ENY4158 - 5 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENY3499 - Jul 14, 23:55 UTCJul 15, 01:35 UTC1h 40m
2026-07-14 ENY3499 ORD → HPN Jul 14, 23:51 UTCJul 15, 01:31 UTC1h 40m
2026-07-14 ENY3908 - Jul 14, 19:00 UTCJul 14, 20:35 UTC1h 35m
2026-07-14 ENY3908 RAP → ORD Jul 14, 18:48 UTCJul 14, 20:32 UTC1h 44m
2026-07-14 ENY3891 - Jul 14, 15:50 UTCJul 14, 17:15 UTC1h 25m
2026-07-14 ENY3952 - Jul 14, 12:35 UTCJul 14, 14:45 UTC2h 10m
2026-07-14 ENY3918 - Jul 14, 04:15 UTCJul 14, 06:20 UTC2h 5m
2026-07-14 ENY3918 DFW → YUM Jul 14, 04:13 UTCJul 14, 06:25 UTC2h 12m
2026-07-14 ENY3347 MTY → DFW Jul 14, 01:20 UTCJul 14, 02:55 UTC1h 35m
2026-07-13 ENY3347 DFW → MTY Jul 13, 23:00 UTCJul 14, 00:20 UTC1h 20m
2026-07-13 ENY3847 - Jul 13, 20:15 UTCJul 13, 21:05 UTC50m
2026-07-13 ENY3847 XNA → DFW Jul 13, 20:13 UTCJul 13, 21:00 UTC47m
2026-07-13 ENY3847 DFW → XNA Jul 13, 18:15 UTCJul 13, 19:05 UTC50m
2026-07-13 ENY3838 - Jul 13, 16:10 UTCJul 13, 17:00 UTC50m
2026-07-13 ENY3838 XNA → DFW Jul 13, 16:06 UTCJul 13, 16:55 UTC49m
2026-07-13 ENY3838 DFW → XNA Jul 13, 14:25 UTCJul 13, 15:15 UTC50m
2026-07-13 ENY3885 CRP → DFW Jul 13, 11:21 UTCJul 13, 12:53 UTC1h 32m
2026-07-13 ENY4065 - Jul 13, 07:15 UTCJul 13, 08:10 UTC55m
2026-07-13 ENY3484 - Jul 13, 04:00 UTCJul 13, 05:35 UTC1h 35m
2026-07-13 ENY3484 CRP → DFW Jul 13, 03:59 UTCJul 13, 05:30 UTC1h 31m
2026-07-12 ENY3484 - Jul 12, 23:25 UTCJul 13, 00:20 UTC55m
2026-07-12 ENY3429 - Jul 12, 19:50 UTCJul 12, 22:10 UTC2h 20m
2026-07-12 ENY3429 - Jul 12, 16:30 UTCJul 12, 18:50 UTC2h 20m
2026-07-12 ENY3628 - Jul 12, 14:30 UTCJul 12, 15:20 UTC50m
2026-07-12 ENY3628 - Jul 12, 12:45 UTCJul 12, 13:25 UTC40m
2026-07-12 ENY3411 - Jul 12, 10:25 UTCJul 12, 11:10 UTC45m
2026-07-12 ENY3357 - Jul 12, 03:10 UTCJul 12, 04:01 UTC50m
2026-07-12 ENY3797 - Jul 12, 01:00 UTCJul 12, 02:01 UTC1h 0m
2026-07-11 ENY3797 DFW → SGF Jul 11, 23:00 UTCJul 12, 00:05 UTC1h 5m
2026-07-11 ENY3676 MEM → DFW Jul 11, 19:55 UTCJul 11, 21:04 UTC1h 9m
2026-07-11 ENY3676 - Jul 11, 17:50 UTCJul 11, 18:55 UTC1h 5m
2026-07-11 ENY3708 - Jul 11, 15:25 UTCJul 11, 16:15 UTC50m
2026-07-11 ENY3708 - Jul 11, 13:45 UTCJul 11, 14:25 UTC40m
2026-07-11 ENY3642 LRD → DFW Jul 11, 01:25 UTCJul 11, 02:30 UTC1h 5m
2026-07-11 ENY3642 LRD → DFW Jul 11, 01:24 UTCJul 11, 02:28 UTC1h 4m
2026-07-10 ENY3642 DFW → LRD Jul 10, 23:40 UTCJul 11, 00:35 UTC55m
2026-07-10 ENY3840 - Jul 10, 21:55 UTCJul 10, 22:50 UTC55m
2026-07-10 ENY3840 DFW → XNA Jul 10, 19:20 UTCJul 10, 20:05 UTC45m
2026-07-10 ENY3938 - Jul 10, 16:30 UTCJul 10, 18:10 UTC1h 40m
2026-07-10 ENY3938 - Jul 10, 14:00 UTCJul 10, 15:30 UTC1h 30m
2026-07-10 ENY3828 - Jul 10, 11:10 UTCJul 10, 12:40 UTC1h 30m
2026-07-10 ENY4015 - Jul 10, 03:40 UTCJul 10, 04:20 UTC40m
2026-07-10 ENY4015 - Jul 10, 03:00 UTCJul 10, 03:35 UTC35m
2026-07-10 ENY3878 - Jul 10, 00:20 UTCJul 10, 01:10 UTC50m
2026-07-09 ENY3781 - Jul 9, 22:40 UTCJul 9, 23:25 UTC45m
2026-07-09 ENY3676 - Jul 9, 19:55 UTCJul 9, 21:05 UTC1h 10m
2026-07-09 ENY3676 - Jul 9, 17:50 UTCJul 9, 18:55 UTC1h 5m
2026-07-09 ENY3486 - Jul 9, 15:20 UTCJul 9, 16:30 UTC1h 10m
2026-07-09 ENY3486 - Jul 9, 13:30 UTCJul 9, 14:25 UTC55m
2026-07-09 ENY3930 - Jul 9, 11:15 UTCJul 9, 12:00 UTC45m

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 N346BB page for operator, model, and routing details .

Mode-S A3D3B3 frequently asked

What is Mode-S code A3D3B3?
A3D3B3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N346BB.
Where is Mode-S A3D3B3 registered?
Mode-S code A3D3B3 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 A3D3B3 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3D3B3, octal 50751663, decimal 10,736,563.
What flights does A3D3B3 operate?
Mode-S A3D3B3 has broadcast 20 distinct callsigns, including ENY4128, ENY3371, ENY4230, ENY4155, ENY4116.