Apparatus

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sensors Mode-S transponder

A2AB6C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N271NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A2AB6C
Octal
50525554
Decimal
10,660,716
Country
US
Tail
N271NN
Type
E75L
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
742
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A2AB6C.

Country allocation

The ICAO 24-bit address A2AB6C 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
ENY3862 Envoy Air 9 2026-07-22
ENY3438 - 9 2026-07-16
ENY3466 - 8 2026-07-20
ENY4171 Envoy Air 7 2026-06-10
ENY3981 Envoy Air 7 2026-07-21
ENY3663 Envoy Air 7 2026-06-08
ENY3572 Envoy Air 7 2026-07-26
ENY3523 Envoy Air 7 2026-07-26
ENY3502 Envoy Air 7 2026-04-25
ENY3479 - 7 2026-07-14
ENY3428 Envoy Air 7 2026-07-19
ENY3409 Envoy Air 7 2026-07-21
ENY3406 - 7 2026-06-15
ENY4192 - 6 2026-06-30
ENY4150 Envoy Air 6 2026-07-22
ENY4124 Envoy Air 6 2026-06-01
ENY3991 Envoy Air 6 2026-05-28
ENY3976 - 6 2026-07-09
ENY3948 Envoy Air 6 2026-07-19
ENY3797 Envoy Air 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3523 ORF → ORD Jul 26, 21:45 UTCJul 26, 23:00 UTC1h 15m
2026-07-26 ENY3523 ORF → ORD Jul 26, 19:15 UTCJul 26, 20:40 UTC1h 25m
2026-07-26 ENY3498 PHX → STS Jul 26, 16:50 UTCJul 26, 17:35 UTC45m
2026-07-26 ENY3498 PHX → STS Jul 26, 14:45 UTCJul 26, 15:40 UTC55m
2026-07-26 ENY3572 CMH → ORD Jul 26, 12:35 UTCJul 26, 13:30 UTC55m
2026-07-26 ENY3572 CMH → ORD Jul 26, 12:35 UTCJul 26, 13:25 UTC50m
2026-07-25 ENY3995 DFW → CMH Jul 25, 22:45 UTCJul 26, 00:55 UTC2h 10m
2026-07-25 ENY3995 DFW → CMH Jul 25, 22:44 UTCJul 26, 00:52 UTC2h 8m
2026-07-25 ENY3726 AZO → ORD Jul 25, 20:50 UTCJul 25, 21:35 UTC45m
2026-07-25 ENY3726 AZO → ORD Jul 25, 20:47 UTCJul 25, 21:32 UTC45m
2026-07-25 ENY3726 AZO → ORD Jul 25, 19:10 UTCJul 25, 19:45 UTC35m
2026-07-25 ENY3340 DFW → SDF Jul 25, 16:16 UTCJul 25, 17:41 UTC1h 25m
2026-07-25 ENY3340 DFW → SDF Jul 25, 16:20 UTCJul 25, 17:40 UTC1h 20m
2026-07-25 ENY3703 ORD → BOS Jul 25, 13:50 UTCJul 25, 15:05 UTC1h 15m
2026-07-25 ENY3353 BUF → ORD Jul 25, 10:45 UTCJul 25, 12:00 UTC1h 15m
2026-07-25 ENY3412 DFW → BRO Jul 25, 04:05 UTCJul 25, 05:10 UTC1h 5m
2026-07-25 ENY3797 TPA → BNA Jul 25, 00:50 UTCJul 25, 01:50 UTC1h 0m
2026-07-24 ENY3797 TPA → BNA Jul 24, 23:00 UTCJul 24, 23:55 UTC55m
2026-07-24 ENY4090 BWI → ORD Jul 24, 20:10 UTCJul 24, 21:00 UTC50m
2026-07-24 ENY4090 BWI → ORD Jul 24, 19:50 UTCJul 24, 21:35 UTC1h 45m
2026-07-24 ENY4090 BWI → ORD Jul 24, 17:25 UTCJul 24, 18:40 UTC1h 15m
2026-07-24 ENY3468 ATL → ORD Jul 24, 15:00 UTCJul 24, 15:45 UTC45m
2026-07-24 ENY3468 ATL → ORD Jul 24, 13:30 UTCJul 24, 14:05 UTC35m
2026-07-24 ENY3353 BUF → ORD Jul 24, 10:35 UTCJul 24, 11:50 UTC1h 15m
2026-07-24 ENY3412 DFW → BRO Jul 24, 03:55 UTCJul 24, 05:00 UTC1h 5m
2026-07-24 ENY3412 DFW → BRO Jul 24, 03:51 UTCJul 24, 05:00 UTC1h 9m
2026-07-24 ENY3797 TPA → BNA Jul 24, 01:40 UTCJul 24, 02:40 UTC1h 0m
2026-07-23 ENY3797 TPA → BNA Jul 23, 23:40 UTCJul 24, 00:35 UTC55m
2026-07-23 ENY3580 MSY → DCA Jul 23, 21:05 UTCJul 23, 22:35 UTC1h 30m
2026-07-23 ENY3580 MSY → DCA Jul 23, 18:35 UTCJul 23, 20:00 UTC1h 25m
2026-07-23 ENY3576 ORD → FAR Jul 23, 15:55 UTCJul 23, 17:05 UTC1h 10m
2026-07-23 ENY3576 ORD → FAR Jul 23, 14:05 UTCJul 23, 15:10 UTC1h 5m
2026-07-23 ENY3418 AUS → ORD Jul 23, 10:00 UTCJul 23, 12:00 UTC2h 0m
2026-07-22 ENY3540 CMH → MIA Jul 22, 22:40 UTCJul 22, 22:50 UTC10m
2026-07-22 ENY3540 CMH → MIA Jul 22, 22:05 UTCJul 22, 22:35 UTC30m
2026-07-22 ENY3540 CMH → MIA Jul 22, 22:04 UTCJul 22, 22:47 UTC43m
2026-07-22 ENY3862 ONT → PHX Jul 22, 18:10 UTCJul 22, 20:15 UTC2h 5m
2026-07-22 ENY3862 ONT → PHX Jul 22, 18:06 UTCJul 22, 20:09 UTC2h 3m
2026-07-22 ENY3862 ONT → PHX Jul 22, 15:25 UTCJul 22, 17:00 UTC1h 35m
2026-07-22 ENY4150 MHT → ORD Jul 22, 11:40 UTCJul 22, 14:00 UTC2h 20m
2026-07-22 ENY4150 MHT → ORD Jul 22, 11:36 UTCJul 22, 13:46 UTC2h 10m
2026-07-22 ENY4149 - Jul 22, 02:50 UTCJul 22, 04:35 UTC1h 45m
2026-07-22 ENY4149 ORD → MHT Jul 22, 02:46 UTCJul 22, 04:30 UTC1h 44m
2026-07-21 ENY3409 DFW → CRP Jul 21, 23:00 UTCJul 22, 01:30 UTC2h 30m
2026-07-21 ENY3409 DFW → CRP Jul 21, 19:50 UTCJul 21, 21:35 UTC1h 45m
2026-07-21 ENY3981 DCA → PNS Jul 21, 16:10 UTCJul 21, 18:15 UTC2h 5m
2026-07-21 ENY3981 DCA → PNS Jul 21, 13:40 UTCJul 21, 14:45 UTC1h 5m
2026-07-21 ENY3751 ELP → AUS Jul 21, 10:25 UTCJul 21, 12:30 UTC2h 5m
2026-07-21 ENY3751 ELP → AUS Jul 21, 10:23 UTCJul 21, 12:25 UTC2h 2m
2026-07-21 ENY3752 ORD → HPN Jul 21, 01:00 UTCJul 21, 02:35 UTC1h 35m

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 N271NN page for operator, model, and routing details .

Mode-S A2AB6C frequently asked

What is Mode-S code A2AB6C?
A2AB6C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N271NN.
Where is Mode-S A2AB6C registered?
Mode-S code A2AB6C 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 A2AB6C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2AB6C, octal 50525554, decimal 10,660,716.
What flights does A2AB6C operate?
Mode-S A2AB6C has broadcast 20 distinct callsigns, including ENY3862, ENY3438, ENY3466, ENY4171, ENY3981.