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sensors Mode-S transponder

AA1A26

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N750BD · operated by AMERICAN AIRLINES INC

Hex
AA1A26
Octal
52415046
Decimal
11,147,814
Country
US
Tail
N750BD
Type
E170
No current signal · last broadcast 18h ago
Flights observed
749
Distinct callsigns
20
Country
US
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S AA1A26.

Country allocation

The ICAO 24-bit address AA1A26 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
ENY4151 - 12 2026-07-05
ENY3446 - 12 2026-06-19
ENY3490 - 11 2026-07-11
ENY3410 - 11 2026-06-23
ENY3391 - 11 2026-07-09
ENY4190 - 10 2026-07-11
ENY4174 - 10 2026-07-12
ENY3785 Envoy Air 10 2026-07-04
ENY3655 - 10 2026-06-27
ENY3815 - 9 2026-07-12
ENY3775 - 9 2026-07-06
ENY3600 - 9 2026-07-10
ENY3529 Envoy Air 9 2026-04-29
ENY4330 - 8 2026-06-27
ENY4326 Envoy Air 8 2026-05-14
ENY3800 Envoy Air 8 2026-05-25
ENY3407 - 8 2026-06-25
ENY4191 Envoy Air 7 2026-05-21
ENY4036 - 7 2026-07-09
ENY3816 Envoy Air 7 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENY3705 - Jul 14, 02:05 UTCJul 14, 02:25 UTC20m
2026-07-13 ENY3730 - Jul 13, 23:35 UTCJul 14, 00:15 UTC40m
2026-07-13 ENY3730 DFW → OKC Jul 13, 22:00 UTCJul 13, 22:35 UTC35m
2026-07-13 ENY3536 - Jul 13, 19:55 UTCJul 13, 20:25 UTC30m
2026-07-13 ENY3536 GGG → DFW Jul 13, 19:51 UTCJul 13, 20:24 UTC33m
2026-07-13 ENY3536 - Jul 13, 18:35 UTCJul 13, 18:55 UTC20m
2026-07-13 ENY3836 - Jul 13, 16:20 UTCJul 13, 16:55 UTC35m
2026-07-13 ENY3836 - Jul 13, 14:45 UTCJul 13, 15:10 UTC25m
2026-07-13 ENY4050 - Jul 13, 12:40 UTCJul 13, 13:45 UTC1h 5m
2026-07-13 ENY4050 GRK → DFW Jul 13, 12:36 UTCJul 13, 13:42 UTC1h 6m
2026-07-13 ENY3569 DFW → GRK Jul 13, 06:55 UTCJul 13, 07:21 UTC26m
2026-07-13 ENY3569 - Jul 13, 07:01 UTCJul 13, 07:20 UTC20m
2026-07-13 ENY3544 - Jul 13, 03:15 UTCJul 13, 05:05 UTC1h 50m
2026-07-12 ENY3815 STL → ORD Jul 12, 20:35 UTCJul 12, 21:20 UTC45m
2026-07-12 ENY3815 - Jul 12, 18:25 UTCJul 12, 19:10 UTC45m
2026-07-12 ENY4174 RST → ORD Jul 12, 16:05 UTCJul 12, 17:01 UTC55m
2026-07-12 ENY4174 RST → ORD Jul 12, 16:06 UTCJul 12, 16:51 UTC45m
2026-07-12 ENY4174 - Jul 12, 14:35 UTCJul 12, 15:25 UTC50m
2026-07-12 ENY4181 - Jul 12, 11:30 UTCJul 12, 13:15 UTC1h 45m
2026-07-12 ENY3757 - Jul 12, 04:15 UTCJul 12, 04:25 UTC10m
2026-07-12 ENY3757 - Jul 12, 02:45 UTCJul 12, 04:25 UTC1h 40m
2026-07-12 ENY3757 ORD → BHM Jul 12, 02:43 UTCJul 12, 03:59 UTC1h 16m
2026-07-11 ENY3490 - Jul 11, 23:40 UTCJul 12, 00:35 UTC55m
2026-07-11 ENY3490 - Jul 11, 22:10 UTCJul 11, 22:45 UTC35m
2026-07-11 ENY3612 - Jul 11, 20:05 UTCJul 11, 20:50 UTC45m
2026-07-11 ENY3612 - Jul 11, 18:40 UTCJul 11, 19:05 UTC25m
2026-07-11 ENY4190 - Jul 11, 16:40 UTCJul 11, 17:25 UTC45m
2026-07-11 ENY4190 TVC → ORD Jul 11, 16:33 UTCJul 11, 17:21 UTC48m
2026-07-11 ENY4190 - Jul 11, 14:55 UTCJul 11, 15:25 UTC30m
2026-07-11 ENY3681 - Jul 11, 12:05 UTCJul 11, 13:30 UTC1h 25m
2026-07-11 ENY3681 TRI → ORD Jul 11, 12:03 UTCJul 11, 13:28 UTC1h 25m
2026-07-11 ENY3873 - Jul 11, 02:50 UTCJul 11, 03:45 UTC55m
2026-07-10 ENY3696 - Jul 10, 23:40 UTCJul 11, 01:25 UTC1h 45m
2026-07-10 ENY3696 - Jul 10, 20:35 UTCJul 10, 22:30 UTC1h 55m
2026-07-10 ENY3600 YUL → ORD Jul 10, 16:35 UTCJul 10, 18:35 UTC2h 0m
2026-07-10 ENY3600 - Jul 10, 13:40 UTCJul 10, 15:10 UTC1h 30m
2026-07-10 ENY3704 - Jul 10, 11:05 UTCJul 10, 11:45 UTC40m
2026-07-10 ENY3713 - Jul 10, 05:20 UTCJul 10, 05:55 UTC35m
2026-07-10 ENY3713 ORD → LSE Jul 10, 05:17 UTCJul 10, 05:55 UTC38m
2026-07-10 ENY3738 - Jul 10, 01:20 UTCJul 10, 03:25 UTC2h 5m
2026-07-09 ENY3738 - Jul 9, 22:50 UTCJul 9, 23:50 UTC1h 0m
2026-07-09 ENY3716 - Jul 9, 20:05 UTCJul 9, 20:35 UTC30m
2026-07-09 ENY3716 - Jul 9, 18:45 UTCJul 9, 19:15 UTC30m
2026-07-09 ENY3391 - Jul 9, 16:40 UTCJul 9, 17:15 UTC35m
2026-07-09 ENY3391 ATW → ORD Jul 9, 16:35 UTCJul 9, 17:13 UTC38m
2026-07-09 ENY3391 - Jul 9, 14:50 UTCJul 9, 15:20 UTC30m
2026-07-09 ENY4036 - Jul 9, 12:50 UTCJul 9, 13:40 UTC50m
2026-07-09 ENY4025 - Jul 9, 00:35 UTCJul 9, 01:15 UTC40m
2026-07-08 ENY3767 - Jul 8, 21:35 UTCJul 8, 23:15 UTC1h 40m
2026-07-08 ENY3767 RAP → ORD Jul 8, 21:27 UTCJul 8, 23:15 UTC1h 48m

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 N750BD page for operator, model, and routing details .

Mode-S AA1A26 frequently asked

What is Mode-S code AA1A26?
AA1A26 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N750BD.
Where is Mode-S AA1A26 registered?
Mode-S code AA1A26 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 AA1A26 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA1A26, octal 52415046, decimal 11,147,814.
What flights does AA1A26 operate?
Mode-S AA1A26 has broadcast 20 distinct callsigns, including ENY4151, ENY3446, ENY3490, ENY3410, ENY3391.