Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A24B39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N247NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A24B39
Octal
50445471
Decimal
10,636,089
Country
US
Tail
N247NN
Type
E75L
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
760
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A24B39.

Country allocation

The ICAO 24-bit address A24B39 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
ENY3691 Envoy Air 11 2026-07-22
ENY3727 - 10 2026-07-11
ENY3400 - 10 2026-07-13
ENY3642 - 8 2026-07-09
ENY3547 - 7 2026-07-21
ENY4291 - 6 2026-06-23
ENY4173 - 6 2026-06-21
ENY4149 Envoy Air 6 2026-04-14
ENY4070 Envoy Air 6 2026-07-26
ENY3968 - 6 2026-07-15
ENY3730 - 6 2026-06-25
ENY3583 Envoy Air 6 2026-06-09
ENY3578 - 6 2026-07-14
ENY3506 - 6 2026-07-11
ENY3486 - 6 2026-07-16
ENY3441 - 6 2026-07-03
ENY3433 - 6 2026-07-17
ENY4235 Envoy Air 5 2026-04-17
ENY4202 - 5 2026-07-13
ENY4168 - 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY4165 PHX → XNA Jul 26, 21:10 UTCJul 26, 22:15 UTC1h 5m
2026-07-26 ENY4070 ORD → BMI Jul 26, 18:05 UTCJul 26, 19:55 UTC1h 50m
2026-07-26 ENY4070 ORD → BMI Jul 26, 17:51 UTCJul 26, 19:51 UTC2h 0m
2026-07-26 ENY3766 - Jul 26, 14:55 UTCJul 26, 16:30 UTC1h 35m
2026-07-26 ENY3766 ORD → RAP Jul 26, 14:52 UTCJul 26, 16:39 UTC1h 47m
2026-07-26 ENY3590 RDU → DCA Jul 26, 11:40 UTCJul 26, 13:10 UTC1h 30m
2026-07-26 ENY3590 RDU → DCA Jul 26, 11:36 UTCJul 26, 13:03 UTC1h 27m
2026-07-26 ENY4037 LRD → DFW Jul 26, 03:25 UTCJul 26, 05:25 UTC2h 0m
2026-07-26 ENY3513 YYZ → DFW Jul 26, 00:50 UTCJul 26, 02:05 UTC1h 15m
2026-07-25 ENY3513 YYZ → DFW Jul 25, 21:55 UTCJul 25, 23:05 UTC1h 10m
2026-07-25 ENY4070 ORD → BMI Jul 25, 18:55 UTCJul 25, 20:45 UTC1h 50m
2026-07-25 ENY4070 ORD → BMI Jul 25, 18:37 UTCJul 25, 20:43 UTC2h 6m
2026-07-25 ENY3766 - Jul 25, 15:20 UTCJul 25, 17:00 UTC1h 40m
2026-07-25 ENY3413 BOS → ORD Jul 25, 12:00 UTCJul 25, 13:25 UTC1h 25m
2026-07-25 ENY4054 CLT → GSO Jul 25, 01:55 UTCJul 25, 02:15 UTC20m
2026-07-24 ENY3422 ORD → GSP Jul 24, 23:45 UTCJul 25, 00:05 UTC20m
2026-07-24 ENY3422 ORD → GSP Jul 24, 22:30 UTCJul 24, 22:55 UTC25m
2026-07-24 ENY4146 ORD → JAX Jul 24, 18:40 UTCJul 24, 20:10 UTC1h 30m
2026-07-24 ENY4146 ORD → JAX Jul 24, 18:36 UTCJul 24, 20:07 UTC1h 31m
2026-07-24 ENY4146 ORD → JAX Jul 24, 15:55 UTCJul 24, 17:20 UTC1h 25m
2026-07-24 ENY4006 DAY → DFW Jul 24, 12:30 UTCJul 24, 14:10 UTC1h 40m
2026-07-24 ENY9872 CVG → ORD Jul 24, 03:50 UTCJul 24, 04:25 UTC35m
2026-07-24 ENY3692 CLT → LIT Jul 24, 01:00 UTCJul 24, 02:20 UTC1h 20m
2026-07-23 ENY3552 - Jul 23, 21:40 UTCJul 23, 22:50 UTC1h 10m
2026-07-23 ENY3552 ECP → CLT Jul 23, 21:38 UTCJul 23, 22:49 UTC1h 11m
2026-07-23 ENY3552 - Jul 23, 19:40 UTCJul 23, 20:45 UTC1h 5m
2026-07-23 ENY4178 TYS → ORD Jul 23, 17:00 UTCJul 23, 17:45 UTC45m
2026-07-23 ENY4178 TYS → ORD Jul 23, 17:00 UTCJul 23, 17:44 UTC44m
2026-07-23 ENY4178 TYS → ORD Jul 23, 15:25 UTCJul 23, 16:10 UTC45m
2026-07-23 ENY4083 SGF → CLT Jul 23, 12:25 UTCJul 23, 14:05 UTC1h 40m
2026-07-23 ENY3665 DFW → SGF Jul 23, 03:30 UTCJul 23, 04:25 UTC55m
2026-07-23 ENY3797 TPA → BNA Jul 23, 00:50 UTCJul 23, 01:50 UTC1h 0m
2026-07-22 ENY3797 TPA → BNA Jul 22, 23:00 UTCJul 22, 23:55 UTC55m
2026-07-22 ENY3849 AVP → ORD Jul 22, 19:08 UTCJul 22, 20:54 UTC1h 46m
2026-07-22 ENY3849 AVP → ORD Jul 22, 16:25 UTCJul 22, 20:55 UTC4h 30m
2026-07-22 ENY3952 - Jul 22, 12:30 UTCJul 22, 14:40 UTC2h 10m
2026-07-22 ENY3918 FWA → DFW Jul 22, 02:35 UTCJul 22, 04:30 UTC1h 55m
2026-07-22 ENY3691 DFW → AGU Jul 22, 00:30 UTCJul 22, 01:20 UTC50m
2026-07-22 ENY3691 DFW → AGU Jul 22, 00:28 UTCJul 22, 01:19 UTC51m
2026-07-21 ENY3691 DFW → AGU Jul 21, 22:20 UTCJul 21, 23:10 UTC50m
2026-07-21 ENY3547 - Jul 21, 20:25 UTCJul 21, 21:00 UTC35m
2026-07-21 ENY3547 - Jul 21, 19:00 UTCJul 21, 19:20 UTC20m
2026-07-21 ENY4097 - Jul 21, 16:25 UTCJul 21, 17:20 UTC55m
2026-07-21 ENY4097 BTR → DFW Jul 21, 16:20 UTCJul 21, 17:21 UTC1h 1m
2026-07-21 ENY4097 DFW → BTR Jul 21, 14:30 UTCJul 21, 15:35 UTC1h 5m
2026-07-21 ENY3448 BTV → DCA Jul 21, 11:40 UTCJul 21, 12:15 UTC35m
2026-07-21 ENY3448 BTV → DCA Jul 21, 11:39 UTCJul 21, 13:01 UTC1h 22m
2026-07-21 ENY3659 MIA → STL Jul 21, 00:00 UTCJul 21, 01:20 UTC1h 20m
2026-07-20 ENY3485 SDF → DFW Jul 20, 21:30 UTCJul 20, 22:30 UTC1h 0m
2026-07-20 ENY3485 SDF → DFW Jul 20, 19:40 UTCJul 20, 20:35 UTC55m

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 N247NN page for operator, model, and routing details .

Mode-S A24B39 frequently asked

What is Mode-S code A24B39?
A24B39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N247NN.
Where is Mode-S A24B39 registered?
Mode-S code A24B39 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 A24B39 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A24B39, octal 50445471, decimal 10,636,089.
What flights does A24B39 operate?
Mode-S A24B39 has broadcast 20 distinct callsigns, including ENY3691, ENY3727, ENY3400, ENY3642, ENY3547.