Apparatus

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sensors Mode-S transponder

AAC7B1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N794JH · operated by AMERICAN AIRLINES INC

Hex
AAC7B1
Octal
52543661
Decimal
11,192,241
Country
US
Tail
N794JH
Type
E170
No current signal · last broadcast 1h ago
Flights observed
709
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AAC7B1.

Country allocation

The ICAO 24-bit address AAC7B1 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
ENY3716 - 13 2026-07-11
ENY4326 - 12 2026-06-21
ENY3600 - 11 2026-06-18
ENY4044 - 10 2026-07-12
ENY4174 - 9 2026-07-13
ENY3775 - 9 2026-06-23
ENY3698 - 9 2026-07-10
ENY3626 Envoy Air 9 2026-06-10
ENY3612 Envoy Air 8 2026-06-27
ENY3410 - 8 2026-07-14
ENY4200 - 7 2026-07-12
ENY4144 Envoy Air 7 2026-06-15
ENY4062 - 7 2026-07-12
ENY3738 - 7 2026-06-22
ENY3681 - 7 2026-06-16
ENY4311 Envoy Air 6 2026-05-03
ENY4190 - 6 2026-06-28
ENY4143 - 6 2026-06-28
ENY3950 Envoy Air 6 2026-04-26
ENY3910 - 6 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENY4281 - Jul 14, 04:20 UTCJul 14, 05:35 UTC1h 15m
2026-07-14 ENY3410 - Jul 14, 00:40 UTCJul 14, 01:25 UTC45m
2026-07-14 ENY3410 ATW → ORD Jul 14, 00:37 UTCJul 14, 01:13 UTC36m
2026-07-13 ENY3410 - Jul 13, 23:15 UTCJul 13, 23:50 UTC35m
2026-07-13 ENY4174 RST → ORD Jul 13, 16:10 UTCJul 13, 17:10 UTC1h 0m
2026-07-13 ENY4174 ORD → RST Jul 13, 14:25 UTCJul 13, 15:05 UTC40m
2026-07-13 ENY3655 - Jul 13, 11:25 UTCJul 13, 12:25 UTC1h 0m
2026-07-13 ENY3745 - Jul 13, 00:45 UTCJul 13, 01:30 UTC45m
2026-07-12 ENY3808 - Jul 12, 21:10 UTCJul 12, 22:15 UTC1h 5m
2026-07-12 ENY3808 HPN → ORD Jul 12, 21:09 UTCJul 12, 22:57 UTC1h 48m
2026-07-12 ENY4200 - Jul 12, 17:55 UTCJul 12, 19:35 UTC1h 40m
2026-07-12 ENY4044 - Jul 12, 14:45 UTCJul 12, 16:15 UTC1h 30m
2026-07-12 ENY4044 SYR → ORD Jul 12, 14:41 UTCJul 12, 16:13 UTC1h 32m
2026-07-12 ENY4044 - Jul 12, 12:25 UTCJul 12, 13:45 UTC1h 20m
2026-07-12 ENY3702 - Jul 12, 10:10 UTCJul 12, 10:40 UTC30m
2026-07-12 ENY3728 - Jul 12, 04:20 UTCJul 12, 04:50 UTC30m
2026-07-12 ENY3728 ORD → MSN Jul 12, 04:17 UTCJul 12, 04:46 UTC29m
2026-07-12 ENY4062 - Jul 12, 01:35 UTCJul 12, 02:55 UTC1h 20m
2026-07-11 ENY4062 - Jul 11, 22:40 UTCJul 12, 00:25 UTC1h 45m
2026-07-11 ENY3716 - Jul 11, 19:50 UTCJul 11, 20:20 UTC30m
2026-07-11 ENY3716 MSN → ORD Jul 11, 19:49 UTCJul 11, 20:15 UTC26m
2026-07-11 ENY3716 - Jul 11, 18:20 UTCJul 11, 18:45 UTC25m
2026-07-11 ENY4103 - Jul 11, 15:30 UTCJul 11, 16:20 UTC50m
2026-07-11 ENY4103 - Jul 11, 13:45 UTCJul 11, 14:35 UTC50m
2026-07-10 ENY3645 - Jul 10, 22:55 UTCJul 10, 23:40 UTC45m
2026-07-10 ENY3645 LSE → ORD Jul 10, 22:50 UTCJul 10, 23:35 UTC45m
2026-07-10 ENY3645 - Jul 10, 21:25 UTCJul 10, 22:05 UTC40m
2026-07-10 ENY3698 - Jul 10, 17:30 UTCJul 10, 18:15 UTC45m
2026-07-10 ENY3698 - Jul 10, 15:25 UTCJul 10, 15:55 UTC30m
2026-07-10 ENY4036 - Jul 10, 13:10 UTCJul 10, 14:10 UTC1h 0m
2026-07-10 ENY4025 - Jul 10, 00:55 UTCJul 10, 01:35 UTC40m
2026-07-09 ENY3772 - Jul 9, 21:50 UTCJul 9, 22:25 UTC35m
2026-07-09 ENY3772 TVC → ORD Jul 9, 21:40 UTCJul 9, 22:25 UTC45m
2026-07-09 ENY3772 - Jul 9, 19:25 UTCJul 9, 20:00 UTC35m
2026-07-09 ENY4044 SYR → ORD Jul 9, 14:45 UTCJul 9, 16:15 UTC1h 30m
2026-07-09 ENY4044 - Jul 9, 12:25 UTCJul 9, 13:40 UTC1h 15m
2026-07-09 ENY3909 - Jul 9, 10:00 UTCJul 9, 10:45 UTC45m
2026-07-09 ENY3910 - Jul 9, 04:15 UTCJul 9, 04:55 UTC40m
2026-07-09 ENY3410 - Jul 9, 00:55 UTCJul 9, 01:35 UTC40m
2026-07-08 ENY3410 - Jul 8, 23:35 UTCJul 9, 00:05 UTC30m
2026-07-08 ENY3398 - Jul 8, 19:45 UTCJul 8, 21:05 UTC1h 20m
2026-07-08 ENY3398 LIT → ORD Jul 8, 19:35 UTCJul 8, 21:08 UTC1h 33m
2026-07-08 ENY3398 - Jul 8, 17:30 UTCJul 8, 18:35 UTC1h 5m
2026-07-08 ENY3741 - Jul 8, 14:55 UTCJul 8, 15:30 UTC35m
2026-07-08 ENY3741 - Jul 8, 13:40 UTCJul 8, 14:05 UTC25m
2026-07-08 ENY3445 - Jul 8, 11:10 UTCJul 8, 11:50 UTC40m
2026-07-08 ENY3699 - Jul 8, 04:45 UTCJul 8, 05:05 UTC20m
2026-07-08 ENY3699 ORD → MLI Jul 8, 04:42 UTCJul 8, 05:10 UTC28m
2026-07-08 ENY3827 - Jul 8, 01:40 UTCJul 8, 03:00 UTC1h 20m
2026-07-07 ENY3827 - Jul 7, 23:35 UTCJul 8, 00:55 UTC1h 20m

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 N794JH page for operator, model, and routing details .

Mode-S AAC7B1 frequently asked

What is Mode-S code AAC7B1?
AAC7B1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N794JH.
Where is Mode-S AAC7B1 registered?
Mode-S code AAC7B1 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 AAC7B1 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAC7B1, octal 52543661, decimal 11,192,241.
What flights does AAC7B1 operate?
Mode-S AAC7B1 has broadcast 20 distinct callsigns, including ENY3716, ENY4326, ENY3600, ENY4044, ENY4174.