Apparatus

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sensors Mode-S transponder

A238A6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N242NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A238A6
Octal
50434246
Decimal
10,631,334
Country
US
Tail
N242NN
Type
E75L
No current signal · last broadcast Jul 26, 20:10 UTC
Flights observed
796
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S A238A6.

Country allocation

The ICAO 24-bit address A238A6 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
ENY4179 - 7 2026-07-07
ENY3936 - 7 2026-07-06
ENY3615 - 7 2026-07-01
ENY3577 - 7 2026-06-25
ENY3575 - 7 2026-07-17
ENY3433 - 7 2026-06-30
ENY4202 - 6 2026-06-27
ENY4161 Envoy Air 6 2026-05-19
ENY4153 Envoy Air 6 2026-04-22
ENY4113 - 6 2026-07-10
ENY3968 Envoy Air 6 2026-05-28
ENY3948 Envoy Air 6 2026-06-21
ENY3938 - 6 2026-07-08
ENY3717 Envoy Air 6 2026-06-18
ENY4263 - 5 2026-07-16
ENY4216 Envoy Air 5 2026-04-28
ENY4208 Envoy Air 5 2026-07-26
ENY4100 - 5 2026-07-12
ENY4075 Envoy Air 5 2026-07-24
ENY4005 - 5 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3986 HRL → DFW Jul 26, 18:00 UTCJul 26, 20:00 UTC2h 0m
2026-07-26 ENY3986 HRL → DFW Jul 26, 15:05 UTCJul 26, 17:05 UTC2h 0m
2026-07-26 ENY3521 ORD → SDF Jul 26, 11:20 UTCJul 26, 13:25 UTC2h 5m
2026-07-26 ENY3521 ORD → SDF Jul 26, 11:09 UTCJul 26, 13:29 UTC2h 20m
2026-07-26 ENY4208 DFW → GJT Jul 26, 01:30 UTCJul 26, 03:25 UTC1h 55m
2026-07-26 ENY4208 DFW → GJT Jul 26, 01:26 UTCJul 26, 03:38 UTC2h 12m
2026-07-25 ENY3853 DFW → JAN Jul 25, 20:00 UTCJul 25, 22:25 UTC2h 25m
2026-07-25 ENY3853 DFW → JAN Jul 25, 19:50 UTCJul 25, 22:19 UTC2h 29m
2026-07-25 ENY3852 GRB → ORD Jul 25, 16:00 UTCJul 25, 18:05 UTC2h 5m
2026-07-25 ENY3343 DFW → ELP Jul 25, 13:50 UTCJul 25, 14:45 UTC55m
2026-07-25 ENY3343 DFW → ELP Jul 25, 13:46 UTCJul 25, 14:40 UTC54m
2026-07-25 ENY3541 HSV → ORD Jul 25, 02:30 UTCJul 25, 03:05 UTC35m
2026-07-24 ENY4125 MIA → CVG Jul 24, 21:40 UTCJul 25, 00:50 UTC3h 10m
2026-07-24 ENY4125 MIA → CVG Jul 24, 17:50 UTCJul 24, 20:45 UTC2h 55m
2026-07-24 ENY3495 IND → ORD Jul 24, 14:55 UTCJul 24, 16:30 UTC1h 35m
2026-07-24 ENY3495 IND → ORD Jul 24, 12:20 UTCJul 24, 14:05 UTC1h 45m
2026-07-24 ENY4075 CRP → DFW Jul 24, 10:20 UTCJul 24, 11:10 UTC50m
2026-07-24 ENY4116 CVG → BOS Jul 24, 03:15 UTCJul 24, 03:55 UTC40m
2026-07-24 ENY3347 DFW → CVG Jul 24, 00:35 UTCJul 24, 02:00 UTC1h 25m
2026-07-23 ENY3347 DFW → CVG Jul 23, 21:55 UTCJul 23, 23:10 UTC1h 15m
2026-07-23 ENY4155 CRP → DFW Jul 23, 20:00 UTCJul 23, 20:30 UTC30m
2026-07-23 ENY4155 CRP → DFW Jul 23, 18:20 UTCJul 23, 18:45 UTC25m
2026-07-23 ENY3805 CRP → DFW Jul 23, 16:15 UTCJul 23, 16:50 UTC35m
2026-07-23 ENY3805 CRP → DFW Jul 23, 14:40 UTCJul 23, 15:25 UTC45m
2026-07-23 ENY4168 CRP → DFW Jul 23, 12:15 UTCJul 23, 13:20 UTC1h 5m
2026-07-23 ENY4168 CRP → DFW Jul 23, 12:14 UTCJul 23, 13:13 UTC59m
2026-07-23 ENY4173 DFW → CRP Jul 23, 02:10 UTCJul 23, 03:00 UTC50m
2026-07-22 ENY4145 IND → MIA Jul 22, 23:25 UTCJul 23, 00:15 UTC50m
2026-07-22 ENY4145 IND → MIA Jul 22, 23:14 UTCJul 23, 00:04 UTC50m
2026-07-22 ENY4145 IND → MIA Jul 22, 21:35 UTCJul 22, 22:15 UTC40m
2026-07-22 ENY4095 BIL → DFW Jul 22, 19:05 UTCJul 22, 19:45 UTC40m
2026-07-22 ENY4095 BIL → DFW Jul 22, 17:35 UTCJul 22, 18:15 UTC40m
2026-07-22 ENY3366 MSN → ORD Jul 22, 15:35 UTCJul 22, 16:00 UTC25m
2026-07-22 ENY3366 MSN → ORD Jul 22, 14:15 UTCJul 22, 14:35 UTC20m
2026-07-22 ENY3886 CLT → CVG Jul 22, 11:30 UTCJul 22, 12:40 UTC1h 10m
2026-07-22 ENY3619 MIA → CVG Jul 22, 01:10 UTCJul 22, 03:10 UTC2h 0m
2026-07-21 ENY4078 - Jul 21, 22:45 UTCJul 21, 23:55 UTC1h 10m
2026-07-21 ENY3637 DFW → LBB Jul 21, 20:30 UTCJul 21, 21:25 UTC55m
2026-07-21 ENY3776 BOS → ORD Jul 21, 17:40 UTCJul 21, 19:00 UTC1h 20m
2026-07-21 ENY3776 BOS → ORD Jul 21, 14:55 UTCJul 21, 16:10 UTC1h 15m
2026-07-21 ENY3985 DCA → GRR Jul 21, 12:30 UTCJul 21, 13:20 UTC50m
2026-07-21 ENY4101 DFW → XNA Jul 21, 01:05 UTCJul 21, 01:55 UTC50m
2026-07-21 ENY4101 DFW → XNA Jul 21, 01:04 UTCJul 21, 01:54 UTC50m
2026-07-20 ENY3382 MSY → DCA Jul 20, 23:20 UTCJul 20, 23:55 UTC34m
2026-07-20 ENY3382 MSY → DCA Jul 20, 22:00 UTCJul 20, 22:20 UTC20m
2026-07-20 ENY3516 ORD → DSM Jul 20, 18:45 UTCJul 20, 20:00 UTC1h 15m
2026-07-20 ENY3516 ORD → DSM Jul 20, 16:35 UTCJul 20, 17:40 UTC1h 5m
2026-07-20 ENY3628 ATL → DCA Jul 20, 14:25 UTCJul 20, 15:10 UTC45m
2026-07-20 ENY3628 ATL → DCA Jul 20, 14:20 UTCJul 20, 15:12 UTC52m
2026-07-20 ENY3628 ATL → DCA Jul 20, 12:30 UTCJul 20, 13:10 UTC40m

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 N242NN page for operator, model, and routing details .

Mode-S A238A6 frequently asked

What is Mode-S code A238A6?
A238A6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N242NN.
Where is Mode-S A238A6 registered?
Mode-S code A238A6 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 A238A6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A238A6, octal 50434246, decimal 10,631,334.
What flights does A238A6 operate?
Mode-S A238A6 has broadcast 20 distinct callsigns, including ENY4179, ENY3936, ENY3615, ENY3577, ENY3575.