Apparatus

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sensors Mode-S transponder

A1C997

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N214NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A1C997
Octal
50344627
Decimal
10,602,903
Country
US
Tail
N214NN
Type
E75L
No current signal · last broadcast 1d ago
Flights observed
711
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A1C997.

Country allocation

The ICAO 24-bit address A1C997 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
ENY4114 Envoy Air 10 2026-06-04
ENY3464 - 9 2026-06-18
ENY3461 Envoy Air 9 2026-05-25
ENY3375 Envoy Air 9 2026-05-20
ENY3933 Envoy Air 8 2026-06-19
ENY4187 - 7 2026-06-18
ENY3879 - 7 2026-06-20
ENY4179 Envoy Air 6 2026-07-21
ENY4130 - 6 2026-07-20
ENY4113 Envoy Air 6 2026-07-21
ENY3652 - 6 2026-07-17
ENY3487 - 6 2026-07-01
ENY4192 Envoy Air 5 2026-06-02
ENY4110 - 5 2026-07-09
ENY4091 - 5 2026-06-18
ENY4080 Envoy Air 5 2026-06-05
ENY4035 - 5 2026-06-20
ENY3992 Envoy Air 5 2026-05-29
ENY3966 Envoy Air 5 2026-07-19
ENY3907 - 5 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3676 MIA → CVG Jul 26, 20:15 UTCJul 26, 21:15 UTC1h 0m
2026-07-26 ENY3676 MIA → CVG Jul 26, 17:55 UTCJul 26, 19:00 UTC1h 5m
2026-07-26 ENY3486 AZO → ORD Jul 26, 15:25 UTCJul 26, 15:45 UTC20m
2026-07-26 ENY3486 AZO → ORD Jul 26, 15:25 UTCJul 26, 16:29 UTC1h 4m
2026-07-26 ENY3486 AZO → ORD Jul 26, 13:30 UTCJul 26, 14:20 UTC50m
2026-07-26 ENY3885 CRP → DFW Jul 26, 11:10 UTCJul 26, 12:10 UTC1h 0m
2026-07-26 ENY4065 DFW → CRP Jul 26, 03:50 UTCJul 26, 04:40 UTC50m
2026-07-26 ENY4065 DFW → CRP Jul 26, 03:47 UTCJul 26, 04:40 UTC53m
2026-07-25 ENY3925 MIA → HPN Jul 25, 23:55 UTCJul 26, 01:20 UTC1h 25m
2026-07-25 ENY3925 MIA → HPN Jul 25, 23:54 UTCJul 26, 01:18 UTC1h 24m
2026-07-25 ENY3823 DFW → LRD Jul 25, 21:05 UTCJul 25, 22:35 UTC1h 30m
2026-07-25 ENY3823 DFW → LRD Jul 25, 21:03 UTCJul 25, 22:34 UTC1h 31m
2026-07-25 ENY3823 DFW → LRD Jul 25, 18:45 UTCJul 25, 20:20 UTC1h 35m
2026-07-25 ENY3825 STL → BOS Jul 25, 16:05 UTCJul 25, 17:50 UTC1h 45m
2026-07-25 ENY3825 STL → BOS Jul 25, 13:50 UTCJul 25, 15:15 UTC1h 25m
2026-07-25 ENY3912 MCI → ORD Jul 25, 11:15 UTCJul 25, 12:55 UTC1h 40m
2026-07-24 ENY3708 BOS → STL Jul 24, 15:35 UTCJul 24, 16:25 UTC50m
2026-07-24 ENY3708 BOS → STL Jul 24, 15:29 UTCJul 24, 16:20 UTC51m
2026-07-24 ENY3708 BOS → STL Jul 24, 13:50 UTCJul 24, 14:30 UTC40m
2026-07-23 ENY3780 BOS → ORD Jul 23, 12:15 UTCJul 23, 12:55 UTC40m
2026-07-23 ENY3780 BOS → ORD Jul 23, 12:05 UTCJul 23, 12:51 UTC46m
2026-07-23 ENY3510 CMH → DFW Jul 23, 01:35 UTCJul 23, 02:10 UTC35m
2026-07-22 ENY3603 ORD → CVG Jul 22, 23:20 UTCJul 23, 00:10 UTC50m
2026-07-22 ENY3603 ORD → CVG Jul 22, 20:45 UTCJul 22, 21:30 UTC45m
2026-07-22 ENY3776 BOS → ORD Jul 22, 17:45 UTCJul 22, 19:05 UTC1h 20m
2026-07-22 ENY3776 BOS → ORD Jul 22, 14:55 UTCJul 22, 16:10 UTC1h 15m
2026-07-22 ENY3985 DCA → GRR Jul 22, 12:25 UTCJul 22, 13:20 UTC55m
2026-07-22 ENY4101 DFW → XNA Jul 22, 01:20 UTCJul 22, 02:10 UTC50m
2026-07-21 ENY3575 MSN → ORD Jul 21, 22:10 UTCJul 21, 23:20 UTC1h 10m
2026-07-21 ENY3575 MSN → ORD Jul 21, 20:05 UTCJul 21, 21:05 UTC1h 0m
2026-07-21 ENY3399 - Jul 21, 16:40 UTCJul 21, 18:35 UTC1h 55m
2026-07-21 ENY3399 - Jul 21, 13:40 UTCJul 21, 15:30 UTC1h 50m
2026-07-21 ENY4179 DTW → DFW Jul 21, 11:20 UTCJul 21, 12:00 UTC40m
2026-07-21 ENY3537 DFW → FSM Jul 21, 03:55 UTCJul 21, 04:35 UTC40m
2026-07-21 ENY3537 DFW → FSM Jul 21, 03:53 UTCJul 21, 04:31 UTC38m
2026-07-21 ENY4113 ILM → MIA Jul 21, 00:10 UTCJul 21, 01:10 UTC1h 0m
2026-07-21 ENY4113 ILM → MIA Jul 21, 00:00 UTCJul 21, 01:04 UTC1h 4m
2026-07-20 ENY4113 ILM → MIA Jul 20, 22:15 UTCJul 20, 23:10 UTC55m
2026-07-20 ENY4130 - Jul 20, 19:45 UTCJul 20, 20:30 UTC45m
2026-07-20 ENY4130 SHV → DFW Jul 20, 19:42 UTCJul 20, 20:24 UTC42m
2026-07-20 ENY4130 - Jul 20, 18:15 UTCJul 20, 18:50 UTC35m
2026-07-20 ENY3968 - Jul 20, 15:55 UTCJul 20, 16:40 UTC45m
2026-07-20 ENY3968 - Jul 20, 14:20 UTCJul 20, 15:05 UTC45m
2026-07-20 ENY3885 - Jul 20, 11:05 UTCJul 20, 12:10 UTC1h 5m
2026-07-20 ENY4065 - Jul 20, 03:50 UTCJul 20, 04:40 UTC50m
2026-07-20 ENY4065 DFW → CRP Jul 20, 03:47 UTCJul 20, 04:43 UTC56m
2026-07-20 ENY3484 - Jul 20, 01:30 UTCJul 20, 02:30 UTC1h 0m
2026-07-19 ENY3484 - Jul 19, 23:45 UTCJul 20, 00:40 UTC55m
2026-07-19 ENY3966 DFW → MSY Jul 19, 15:50 UTCJul 19, 22:30 UTC6h 40m
2026-07-19 ENY3746 - Jul 19, 12:05 UTCJul 19, 14:25 UTC2h 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 N214NN page for operator, model, and routing details .

Mode-S A1C997 frequently asked

What is Mode-S code A1C997?
A1C997 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N214NN.
Where is Mode-S A1C997 registered?
Mode-S code A1C997 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 A1C997 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C997, octal 50344627, decimal 10,602,903.
What flights does A1C997 operate?
Mode-S A1C997 has broadcast 20 distinct callsigns, including ENY4114, ENY3464, ENY3461, ENY3375, ENY3933.