Apparatus

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sensors Mode-S transponder

A19E97

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N203QS · operated by NETJETS SALES INC

Hex
A19E97
Octal
50317227
Decimal
10,591,895
Country
US
Tail
N203QS
No current signal · last broadcast 13h ago
Flights observed
160
Distinct callsigns
3
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A19E97.

Country allocation

The ICAO 24-bit address A19E97 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 3 distinct

Callsign Airline Flights Last seen
EJA203 - 138 2026-07-13
N203QS - 20 2026-07-13
EJA4043 NetJets 2 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EJA203 - Jul 13, 22:00 UTCJul 13, 22:50 UTC50m
2026-07-13 EJA203 - Jul 13, 19:25 UTCJul 13, 21:05 UTC1h 40m
2026-07-13 EJA203 - Jul 13, 15:55 UTCJul 13, 17:55 UTC2h 0m
2026-07-13 N203QS - Jul 13, 00:01 UTCJul 13, 02:30 UTC2h 30m
2026-07-12 N203QS - Jul 12, 18:10 UTCJul 12, 23:00 UTC4h 50m
2026-07-11 EJA203 - Jul 11, 20:35 UTCJul 11, 20:55 UTC20m
2026-07-11 EJA203 - Jul 11, 16:30 UTCJul 11, 18:45 UTC2h 15m
2026-07-11 EJA203 - Jul 11, 13:30 UTCJul 11, 14:05 UTC35m
2026-07-10 EJA203 - Jul 10, 17:25 UTCJul 10, 23:15 UTC5h 50m
2026-07-10 EJA203 - Jul 10, 15:30 UTCJul 10, 16:10 UTC40m
2026-07-06 N203QS - Jul 6, 20:00 UTCJul 6, 22:35 UTC2h 35m
2026-07-06 N203QS - Jul 6, 17:10 UTCJul 6, 18:55 UTC1h 45m
2026-07-05 EJA203 - Jul 5, 22:45 UTCJul 6, 00:10 UTC1h 25m
2026-07-05 EJA203 - Jul 5, 20:40 UTCJul 5, 22:05 UTC1h 25m
2026-07-03 EJA203 - Jul 3, 16:40 UTCJul 3, 19:20 UTC2h 40m
2026-07-03 EJA203 - Jul 3, 14:00 UTCJul 3, 15:10 UTC1h 10m
2026-07-02 EJA203 - Jul 2, 21:40 UTCJul 2, 23:15 UTC1h 35m
2026-07-02 EJA203 SJC → CMH Jul 2, 17:05 UTCJul 2, 21:05 UTC4h 0m
2026-07-01 EJA203 - Jul 1, 19:50 UTCJul 2, 15:35 UTC19h 45m
2026-07-01 EJA203 - Jul 1, 19:25 UTCJul 2, 15:35 UTC20h 10m
2026-07-01 EJA203 - Jul 1, 12:10 UTCJul 1, 17:15 UTC5h 5m
2026-06-30 EJA203 - Jun 30, 19:10 UTCJun 30, 19:40 UTC30m
2026-06-27 EJA203 TEB → BWI Jun 27, 21:04 UTCJun 27, 21:59 UTC55m
2026-06-27 EJA203 MSP → TEB Jun 27, 01:39 UTCJun 27, 03:34 UTC1h 55m
2026-06-26 N203QS - Jun 26, 21:35 UTCJun 27, 00:39 UTC3h 5m
2026-06-25 N203QS - Jun 25, 14:55 UTCJun 25, 16:14 UTC1h 20m
2026-06-24 EJA203 - Jun 24, 15:14 UTCJun 24, 20:44 UTC5h 30m
2026-06-24 EJA203 BED → TEB Jun 24, 11:34 UTCJun 24, 12:20 UTC45m
2026-06-23 EJA203 - Jun 23, 20:10 UTCJun 23, 20:34 UTC25m
2026-06-23 EJA203 - Jun 23, 15:19 UTCJun 23, 18:55 UTC3h 35m
2026-06-22 EJA203 - Jun 22, 22:59 UTCJun 23, 01:10 UTC2h 10m
2026-06-21 EJA203 - Jun 21, 17:50 UTCJun 21, 18:44 UTC55m
2026-06-21 EJA203 - Jun 21, 14:10 UTCJun 21, 16:10 UTC2h 0m
2026-06-20 EJA203 - Jun 20, 21:10 UTCJun 20, 21:25 UTC15m
2026-06-20 EJA203 BOS → MIA Jun 20, 16:49 UTCJun 20, 19:55 UTC3h 5m
2026-06-19 EJA203 VNY → TEB Jun 19, 15:54 UTCJun 19, 20:19 UTC4h 25m
2026-06-18 EJA203 ROW → VNY Jun 18, 21:45 UTCJun 18, 23:45 UTC2h 0m
2026-06-18 EJA203 - Jun 18, 19:00 UTCJun 18, 20:05 UTC1h 5m
2026-06-18 EJA203 - Jun 18, 15:40 UTCJun 18, 17:30 UTC1h 50m
2026-06-15 EJA203 - Jun 15, 18:35 UTCJun 15, 22:05 UTC3h 30m
2026-06-15 EJA203 - Jun 15, 14:00 UTCJun 15, 15:35 UTC1h 35m
2026-06-15 EJA203 - Jun 15, 10:50 UTCJun 15, 13:05 UTC2h 15m
2026-06-15 EJA203 - Jun 15, 00:45 UTCJun 15, 01:15 UTC30m
2026-06-14 EJA203 - Jun 14, 22:05 UTCJun 14, 22:45 UTC40m
2026-06-14 EJA203 - Jun 14, 18:15 UTCJun 14, 18:45 UTC30m
2026-06-14 EJA203 - Jun 14, 15:35 UTCJun 14, 16:55 UTC1h 20m
2026-06-13 EJA203 - Jun 13, 23:50 UTCJun 14, 00:35 UTC45m
2026-06-13 EJA203 - Jun 13, 21:15 UTCJun 13, 22:55 UTC1h 40m
2026-06-13 EJA203 - Jun 13, 17:55 UTCJun 13, 19:35 UTC1h 40m
2026-06-13 EJA203 - Jun 13, 15:15 UTCJun 13, 16:50 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 N203QS page for operator, model, and routing details .

Mode-S A19E97 frequently asked

What is Mode-S code A19E97?
A19E97 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N203QS.
Where is Mode-S A19E97 registered?
Mode-S code A19E97 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 A19E97 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A19E97, octal 50317227, decimal 10,591,895.
What flights does A19E97 operate?
Mode-S A19E97 has broadcast 3 distinct callsigns, including EJA203, N203QS, EJA4043.