Apparatus

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sensors Mode-S transponder

AA01B3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N744DB · operated by WILMINGTON TRUST CO

Hex
AA01B3
Octal
52400663
Decimal
11,141,555
Country
US
Tail
N744DB
Type
E170
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
880
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AA01B3.

Country allocation

The ICAO 24-bit address AA01B3 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
ENY3596 Envoy Air 17 2026-07-25
ENY4330 Envoy Air 14 2026-07-23
ENY3812 Envoy Air 14 2026-07-22
ENY4326 - 13 2026-06-26
ENY3675 Envoy Air 13 2026-07-21
ENY3556 Envoy Air 13 2026-07-23
ENY3476 Envoy Air 13 2026-06-17
ENY4018 Envoy Air 12 2026-07-24
ENY3739 Envoy Air 12 2026-07-26
ENY3698 - 11 2026-07-14
ENY3500 Envoy Air 11 2026-07-20
ENY3767 - 10 2026-07-18
ENY3716 Envoy Air 10 2026-06-29
ENY3407 - 10 2026-07-16
ENY3775 Envoy Air 9 2026-07-18
ENY3712 - 9 2026-07-13
ENY3511 - 9 2026-06-30
ENY3477 - 9 2026-07-15
ENY3470 Envoy Air 9 2026-05-12
ENY3699 Envoy Air 8 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3696 MEM → ORD Jul 26, 20:10 UTCJul 26, 21:30 UTC1h 20m
2026-07-26 ENY3739 DCA → CMH Jul 26, 16:55 UTCJul 26, 18:00 UTC1h 5m
2026-07-26 ENY3739 DCA → CMH Jul 26, 16:52 UTCJul 26, 18:00 UTC1h 8m
2026-07-26 ENY3739 DCA → CMH Jul 26, 14:40 UTCJul 26, 15:40 UTC1h 0m
2026-07-26 ENY3758 MEM → ORD Jul 26, 11:40 UTCJul 26, 12:45 UTC1h 5m
2026-07-26 ENY3758 MEM → ORD Jul 26, 11:38 UTCJul 26, 13:00 UTC1h 22m
2026-07-26 ENY3945 ORD → MEM Jul 26, 03:50 UTCJul 26, 05:00 UTC1h 10m
2026-07-25 ENY3410 ORD → MSN Jul 25, 23:45 UTCJul 26, 00:35 UTC50m
2026-07-25 ENY3410 ORD → MSN Jul 25, 22:05 UTCJul 25, 22:45 UTC40m
2026-07-25 ENY3596 CLE → ORD Jul 25, 19:40 UTCJul 25, 20:20 UTC40m
2026-07-25 ENY3596 CLE → ORD Jul 25, 19:36 UTCJul 25, 20:17 UTC41m
2026-07-25 ENY3596 CLE → ORD Jul 25, 18:05 UTCJul 25, 18:40 UTC35m
2026-07-25 ENY3480 MSY → AUS Jul 25, 15:40 UTCJul 25, 16:30 UTC50m
2026-07-25 ENY3480 MSY → AUS Jul 25, 13:40 UTCJul 25, 14:30 UTC50m
2026-07-25 ENY4094 CVG → ORD Jul 25, 10:15 UTCJul 25, 10:45 UTC30m
2026-07-25 ENY4094 CVG → ORD Jul 25, 10:15 UTCJul 25, 11:01 UTC46m
2026-07-25 ENY3674 DEN → ORD Jul 25, 00:15 UTCJul 25, 01:00 UTC45m
2026-07-24 ENY3715 ORD → PVD Jul 24, 21:55 UTCJul 24, 22:30 UTC35m
2026-07-24 ENY3715 ORD → PVD Jul 24, 21:50 UTCJul 24, 22:27 UTC37m
2026-07-24 ENY4117 BOS → ORD Jul 24, 20:15 UTCJul 24, 20:45 UTC30m
2026-07-24 ENY3437 FSD → ORD Jul 24, 18:10 UTCJul 24, 18:40 UTC30m
2026-07-24 ENY3437 FSD → ORD Jul 24, 18:07 UTCJul 24, 18:36 UTC29m
2026-07-24 ENY3437 FSD → ORD Jul 24, 16:35 UTCJul 24, 17:05 UTC30m
2026-07-24 ENY4018 ORD → BHM Jul 24, 14:20 UTCJul 24, 14:50 UTC30m
2026-07-24 ENY4018 ORD → BHM Jul 24, 11:55 UTCJul 24, 12:20 UTC25m
2026-07-24 ENY3765 ORD → ROC Jul 24, 10:05 UTCJul 24, 10:35 UTC30m
2026-07-24 ENY3753 TYS → DFW Jul 24, 03:30 UTCJul 24, 03:55 UTC25m
2026-07-24 ENY3753 TYS → DFW Jul 24, 03:27 UTCJul 24, 03:58 UTC31m
2026-07-24 ENY3410 ORD → MSN Jul 24, 01:20 UTCJul 24, 02:00 UTC40m
2026-07-24 ENY3410 ORD → MSN Jul 24, 00:05 UTCJul 24, 00:40 UTC35m
2026-07-23 ENY4330 ORD → FWA Jul 23, 21:50 UTCJul 23, 22:30 UTC40m
2026-07-23 ENY4330 ORD → FWA Jul 23, 21:49 UTCJul 23, 22:29 UTC40m
2026-07-23 ENY4330 ORD → FWA Jul 23, 18:25 UTCJul 23, 19:00 UTC35m
2026-07-23 ENY4330 ORD → FWA Jul 23, 18:24 UTCJul 23, 18:55 UTC31m
2026-07-23 ENY3556 HRL → DFW Jul 23, 15:45 UTCJul 23, 17:20 UTC1h 35m
2026-07-23 ENY3556 HRL → DFW Jul 23, 13:25 UTCJul 23, 14:35 UTC1h 10m
2026-07-23 ENY4102 TUL → PHX Jul 23, 02:05 UTCJul 23, 02:50 UTC45m
2026-07-23 ENY4102 TUL → PHX Jul 23, 02:00 UTCJul 23, 02:48 UTC48m
2026-07-23 ENY4102 TUL → PHX Jul 23, 00:20 UTCJul 23, 01:15 UTC55m
2026-07-22 ENY3734 EWR → ORD Jul 22, 21:45 UTCJul 22, 22:50 UTC1h 5m
2026-07-22 ENY3734 EWR → ORD Jul 22, 21:42 UTCJul 22, 22:46 UTC1h 4m
2026-07-22 ENY3734 EWR → ORD Jul 22, 19:55 UTCJul 22, 20:55 UTC1h 0m
2026-07-22 ENY3812 HPN → ORD Jul 22, 16:30 UTCJul 22, 18:30 UTC2h 0m
2026-07-22 ENY3812 HPN → ORD Jul 22, 16:27 UTCJul 22, 18:29 UTC2h 2m
2026-07-22 ENY3812 HPN → ORD Jul 22, 14:00 UTCJul 22, 15:40 UTC1h 40m
2026-07-22 ENY3445 - Jul 22, 11:30 UTCJul 22, 11:45 UTC15m
2026-07-22 ENY3699 ORD → SPI Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 ENY4102 TUL → PHX Jul 22, 02:35 UTCJul 22, 03:20 UTC45m
2026-07-22 ENY4102 TUL → PHX Jul 22, 01:05 UTCJul 22, 01:55 UTC50m
2026-07-21 ENY3675 MIA → SDF Jul 21, 20:20 UTCJul 21, 22:05 UTC1h 45m

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 N744DB page for operator, model, and routing details .

Mode-S AA01B3 frequently asked

What is Mode-S code AA01B3?
AA01B3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N744DB.
Where is Mode-S AA01B3 registered?
Mode-S code AA01B3 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 AA01B3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA01B3, octal 52400663, decimal 11,141,555.
What flights does AA01B3 operate?
Mode-S AA01B3 has broadcast 20 distinct callsigns, including ENY3596, ENY4330, ENY3812, ENY4326, ENY3675.