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sensors Mode-S transponder

A19691

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N201JQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A19691
Octal
50313221
Decimal
10,589,841
Country
US
Tail
N201JQ
Type
E75L
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
762
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A19691.

Country allocation

The ICAO 24-bit address A19691 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
RPA5859 Republic Airlines 15 2026-07-25
RPA5774 Republic Airlines 14 2026-07-26
RPA5685 Republic Airlines 13 2026-07-25
RPA5845 - 12 2026-07-23
RPA5687 - 12 2026-07-13
RPA5838 Republic Airlines 11 2026-07-26
RPA5619 Republic Airlines 11 2026-07-25
RPA5720 - 10 2026-07-25
RPA5843 - 9 2026-07-12
RPA5829 - 9 2026-06-15
RPA5689 - 9 2026-07-02
RPA5644 Republic Airlines 9 2026-05-09
RPA5601 Republic Airlines 9 2026-05-10
RPA5855 Republic Airlines 8 2026-05-31
RPA5832 - 8 2026-07-07
RPA5811 - 8 2026-07-12
RPA5805 Republic Airlines 8 2026-06-11
RPA5715 - 8 2026-07-13
RPA5680 Republic Airlines 8 2026-05-28
RPA5647 Republic Airlines 8 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA5647 OMA → LGA Jul 26, 22:00 UTCJul 26, 22:15 UTC15m
2026-07-26 RPA5826 IAD → LGA Jul 26, 20:15 UTCJul 26, 20:55 UTC40m
2026-07-26 RPA5774 BOS → JFK Jul 26, 18:10 UTCJul 26, 18:50 UTC40m
2026-07-26 RPA5774 BOS → JFK Jul 26, 16:40 UTCJul 26, 17:15 UTC35m
2026-07-26 RPA5607 BOS → PHL Jul 26, 14:40 UTCJul 26, 15:25 UTC45m
2026-07-26 RPA5606 PIT → BOS Jul 26, 12:45 UTCJul 26, 13:20 UTC35m
2026-07-26 RPA5701 LGA → JAX Jul 26, 10:50 UTCJul 26, 11:25 UTC35m
2026-07-26 RPA5838 BOS → CLE Jul 26, 00:10 UTCJul 26, 00:40 UTC30m
2026-07-26 RPA5838 BOS → CLE Jul 26, 00:08 UTCJul 26, 00:36 UTC28m
2026-07-25 RPA5766 LGA → BOS Jul 25, 22:20 UTCJul 25, 23:00 UTC40m
2026-07-25 RPA5766 LGA → BOS Jul 25, 22:17 UTCJul 25, 23:00 UTC43m
2026-07-25 RPA5685 BOS → PIT Jul 25, 19:30 UTCJul 25, 20:40 UTC1h 10m
2026-07-25 RPA5685 BOS → PIT Jul 25, 19:29 UTCJul 25, 20:24 UTC55m
2026-07-25 RPA5859 JFK → IAD Jul 25, 17:25 UTCJul 25, 18:00 UTC35m
2026-07-25 RPA5859 JFK → IAD Jul 25, 17:24 UTCJul 25, 18:07 UTC43m
2026-07-25 RPA5859 JFK → IAD Jul 25, 15:50 UTCJul 25, 16:25 UTC35m
2026-07-25 RPA5720 - Jul 25, 13:40 UTCJul 25, 14:30 UTC50m
2026-07-25 RPA5619 JFK → IAD Jul 25, 00:10 UTCJul 25, 01:55 UTC1h 45m
2026-07-24 RPA5619 JFK → IAD Jul 24, 20:45 UTCJul 24, 22:55 UTC2h 10m
2026-07-24 RPA5739 JFK → CMH Jul 24, 18:40 UTCJul 24, 19:15 UTC35m
2026-07-24 RPA5854 BOS → LGA Jul 24, 16:10 UTCJul 24, 17:00 UTC50m
2026-07-24 RPA5733 BOS → JFK Jul 24, 14:00 UTCJul 24, 14:40 UTC40m
2026-07-24 RPA5677 LGA → DCA Jul 24, 11:45 UTCJul 24, 12:50 UTC1h 5m
2026-07-24 RPA5677 LGA → DCA Jul 24, 11:41 UTCJul 24, 12:48 UTC1h 7m
2026-07-24 RPA5795 LGA → DCA Jul 24, 01:10 UTCJul 24, 02:05 UTC55m
2026-07-23 RPA5814 BOS → LGA Jul 23, 22:55 UTCJul 23, 23:40 UTC45m
2026-07-23 RPA5731 JFK → DCA Jul 23, 20:25 UTCJul 23, 21:40 UTC1h 15m
2026-07-23 RPA5731 JFK → DCA Jul 23, 20:24 UTCJul 23, 21:34 UTC1h 10m
2026-07-23 RPA5731 JFK → DCA Jul 23, 16:05 UTCJul 23, 17:25 UTC1h 20m
2026-07-23 RPA5845 PHL → BNH Jul 23, 13:55 UTCJul 23, 14:50 UTC55m
2026-07-23 RPA5845 BOS → PHL Jul 23, 11:05 UTCJul 23, 12:10 UTC1h 5m
2026-07-23 RPA5657 JFK → DCA Jul 23, 02:15 UTCJul 23, 02:20 UTC5m
2026-07-23 RPA5657 JFK → DCA Jul 23, 00:00 UTCJul 23, 02:15 UTC2h 15m
2026-07-22 RPA5657 JFK → DCA Jul 22, 23:59 UTCJul 23, 01:57 UTC1h 58m
2026-07-22 RPA5657 JFK → DCA Jul 22, 20:15 UTCJul 22, 22:40 UTC2h 25m
2026-07-22 RPA5592 MCI → BOS Jul 22, 17:50 UTCJul 22, 18:55 UTC1h 5m
2026-07-22 RPA5592 MCI → BOS Jul 22, 15:20 UTCJul 22, 16:40 UTC1h 20m
2026-07-22 RPA5632 JFK → PIT Jul 22, 11:10 UTCJul 22, 13:25 UTC2h 15m
2026-07-21 RPA5905 IND → MSN Jul 21, 23:15 UTCJul 22, 00:55 UTC1h 40m
2026-07-21 RPA5905 IND → MSN Jul 21, 22:55 UTCJul 22, 00:40 UTC1h 45m
2026-07-21 RPA5826 - Jul 21, 20:15 UTCJul 21, 20:55 UTC40m
2026-07-21 RPA5774 - Jul 21, 18:15 UTCJul 21, 19:00 UTC45m
2026-07-21 RPA5774 - Jul 21, 16:45 UTCJul 21, 17:15 UTC30m
2026-07-21 RPA5607 - Jul 21, 14:55 UTCJul 21, 15:45 UTC50m
2026-07-21 RPA5606 - Jul 21, 13:10 UTCJul 21, 14:00 UTC50m
2026-07-21 RPA5701 LGA → JAX Jul 21, 11:05 UTCJul 21, 11:55 UTC50m
2026-07-21 RPA5701 LGA → JAX Jul 21, 11:02 UTCJul 21, 11:56 UTC54m
2026-07-21 RPA5658 - Jul 21, 02:55 UTCJul 21, 03:25 UTC30m
2026-07-21 RPA5658 JFK → CMH Jul 21, 02:10 UTCJul 21, 02:39 UTC29m
2026-07-21 RPA5658 - Jul 21, 02:15 UTCJul 21, 03:25 UTC1h 10m

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 N201JQ page for operator, model, and routing details .

Mode-S A19691 frequently asked

What is Mode-S code A19691?
A19691 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N201JQ.
Where is Mode-S A19691 registered?
Mode-S code A19691 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 A19691 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A19691, octal 50313221, decimal 10,589,841.
What flights does A19691 operate?
Mode-S A19691 has broadcast 20 distinct callsigns, including RPA5859, RPA5774, RPA5685, RPA5845, RPA5687.