Apparatus

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sensors Mode-S transponder

A37738

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N322RC · operated by AMERICAN AIRLINES INC

Hex
A37738
Octal
50673470
Decimal
10,712,888
Country
US
Tail
N322RC
Type
E75L
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
720
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A37738.

Country allocation

The ICAO 24-bit address A37738 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
ENY3464 Envoy Air 8 2026-05-30
ENY4114 Envoy Air 7 2026-07-20
ENY4035 - 7 2026-07-15
ENY3945 Envoy Air 7 2026-05-19
ENY3845 Envoy Air 7 2026-07-03
ENY3792 Envoy Air 7 2026-07-21
ENY3720 Envoy Air 7 2026-07-21
ENY3508 Envoy Air 7 2026-05-20
ENY3440 - 7 2026-07-16
ENY4146 Envoy Air 6 2026-06-12
ENY4024 - 6 2026-07-10
ENY3992 - 6 2026-07-16
ENY3788 Envoy Air 6 2026-07-23
ENY3434 - 6 2026-07-07
ENY4307 Envoy Air 5 2026-07-21
ENY4181 Envoy Air 5 2026-05-04
ENY4112 Envoy Air 5 2026-05-18
ENY4099 Envoy Air 5 2026-05-28
ENY4037 Envoy Air 5 2026-07-22
ENY4019 - 5 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3532 RAP → DFW Jul 26, 21:05 UTCJul 26, 22:00 UTC55m
2026-07-26 ENY3549 CLT → MYR Jul 26, 18:05 UTCJul 26, 18:35 UTC30m
2026-07-26 ENY3549 CLT → MYR Jul 26, 16:50 UTCJul 26, 17:15 UTC25m
2026-07-26 ENY3952 DFW → SGF Jul 26, 12:40 UTCJul 26, 15:00 UTC2h 20m
2026-07-26 ENY3952 DFW → SGF Jul 26, 12:33 UTCJul 26, 15:03 UTC2h 30m
2026-07-26 ENY3918 FWA → DFW Jul 26, 02:30 UTCJul 26, 04:30 UTC2h 0m
2026-07-26 ENY3504 XNA → DFW Jul 26, 00:00 UTCJul 26, 01:15 UTC1h 15m
2026-07-25 ENY3504 XNA → DFW Jul 25, 21:30 UTCJul 25, 22:30 UTC1h 0m
2026-07-25 ENY3977 DFW → STS Jul 25, 17:55 UTCJul 25, 19:55 UTC2h 0m
2026-07-25 ENY3977 DFW → STS Jul 25, 17:54 UTCJul 25, 19:46 UTC1h 52m
2026-07-25 ENY3977 DFW → STS Jul 25, 14:45 UTCJul 25, 17:00 UTC2h 15m
2026-07-25 ENY3673 GSO → ORD Jul 25, 11:10 UTCJul 25, 13:10 UTC2h 0m
2026-07-25 ENY3673 GSO → ORD Jul 25, 11:07 UTCJul 25, 13:07 UTC2h 0m
2026-07-25 ENY4188 DFW → ATW Jul 25, 01:15 UTCJul 25, 03:20 UTC2h 5m
2026-07-25 ENY4188 DFW → ATW Jul 25, 01:14 UTCJul 25, 03:26 UTC2h 12m
2026-07-24 ENY3621 MIA → MSY Jul 24, 21:55 UTCJul 24, 23:50 UTC1h 55m
2026-07-24 ENY3621 MIA → MSY Jul 24, 21:54 UTCJul 24, 23:42 UTC1h 48m
2026-07-24 ENY3621 MIA → MSY Jul 24, 19:05 UTCJul 24, 20:50 UTC1h 45m
2026-07-24 ENY3442 ORD → EWR Jul 24, 16:45 UTCJul 24, 17:55 UTC1h 10m
2026-07-24 ENY3442 ORD → EWR Jul 24, 14:35 UTCJul 24, 15:40 UTC1h 5m
2026-07-24 ENY3424 ELP → AUS Jul 24, 12:10 UTCJul 24, 13:10 UTC1h 0m
2026-07-24 ENY4092 DFW → SGF Jul 24, 01:35 UTCJul 24, 02:35 UTC1h 0m
2026-07-23 ENY3538 ORD → CMH Jul 23, 21:30 UTCJul 23, 23:30 UTC2h 0m
2026-07-23 ENY3538 ORD → CMH Jul 23, 18:40 UTCJul 23, 20:40 UTC2h 0m
2026-07-23 ENY3788 CWA → ORD Jul 23, 15:30 UTCJul 23, 17:10 UTC1h 40m
2026-07-23 ENY3788 CWA → ORD Jul 23, 15:26 UTCJul 23, 17:08 UTC1h 42m
2026-07-23 ENY3788 CWA → ORD Jul 23, 13:00 UTCJul 23, 14:40 UTC1h 40m
2026-07-23 ENY3411 GCK → DFW Jul 23, 10:20 UTCJul 23, 11:10 UTC50m
2026-07-23 ENY3411 GCK → DFW Jul 23, 10:07 UTCJul 23, 11:10 UTC1h 3m
2026-07-23 ENY3357 ELP → AUS Jul 23, 03:25 UTCJul 23, 04:10 UTC45m
2026-07-23 ENY3358 RIC → ORD Jul 23, 00:50 UTCJul 23, 01:40 UTC50m
2026-07-22 ENY3358 DFW → XNA Jul 22, 22:25 UTCJul 22, 23:10 UTC45m
2026-07-22 ENY3358 RIC → ORD Jul 22, 22:23 UTCJul 22, 23:09 UTC46m
2026-07-22 ENY4155 CRP → DFW Jul 22, 20:05 UTCJul 22, 20:35 UTC30m
2026-07-22 ENY4155 CRP → DFW Jul 22, 18:30 UTCJul 22, 18:55 UTC25m
2026-07-22 ENY3788 CWA → ORD Jul 22, 15:20 UTCJul 22, 17:05 UTC1h 45m
2026-07-22 ENY3788 CWA → ORD Jul 22, 15:17 UTCJul 22, 17:07 UTC1h 50m
2026-07-22 ENY3788 CWA → ORD Jul 22, 12:40 UTCJul 22, 14:20 UTC1h 40m
2026-07-22 ENY3988 MSN → DCA Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-22 ENY3988 MSN → DCA Jul 22, 10:06 UTCJul 22, 10:54 UTC48m
2026-07-22 ENY4037 LRD → DFW Jul 22, 02:45 UTCJul 22, 04:45 UTC2h 0m
2026-07-22 ENY3565 DCA → XNA Jul 22, 00:15 UTCJul 22, 01:25 UTC1h 10m
2026-07-22 ENY3565 DCA → XNA Jul 22, 00:10 UTCJul 22, 01:24 UTC1h 14m
2026-07-21 ENY3565 DCA → XNA Jul 21, 22:25 UTCJul 21, 23:25 UTC1h 0m
2026-07-21 ENY3720 MSN → CMH Jul 21, 19:50 UTCJul 21, 21:20 UTC1h 30m
2026-07-21 ENY3720 MSN → CMH Jul 21, 17:25 UTCJul 21, 18:45 UTC1h 20m
2026-07-21 ENY3792 XNA → ORD Jul 21, 13:35 UTCJul 21, 16:05 UTC2h 30m
2026-07-21 ENY3792 XNA → ORD Jul 21, 13:31 UTCJul 21, 16:00 UTC2h 29m
2026-07-21 ENY4307 ORD → PIT Jul 21, 01:15 UTCJul 21, 03:45 UTC2h 30m
2026-07-20 ENY4114 - Jul 20, 20:50 UTCJul 20, 23:20 UTC2h 30m

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 N322RC page for operator, model, and routing details .

Mode-S A37738 frequently asked

What is Mode-S code A37738?
A37738 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N322RC.
Where is Mode-S A37738 registered?
Mode-S code A37738 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 A37738 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37738, octal 50673470, decimal 10,712,888.
What flights does A37738 operate?
Mode-S A37738 has broadcast 20 distinct callsigns, including ENY3464, ENY4114, ENY4035, ENY3945, ENY3845.