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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 2h ago
Flights observed
680
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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 - 12 2026-07-06
RPA5687 - 12 2026-07-13
RPA5685 - 11 2026-07-06
RPA5845 - 10 2026-07-08
RPA5774 - 10 2026-07-02
RPA5843 - 9 2026-07-12
RPA5838 - 9 2026-07-05
RPA5829 - 9 2026-06-15
RPA5720 - 9 2026-07-06
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
RPA5800 - 7 2026-07-06
RPA5755 - 7 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RPA5610 BOS → PHL Jul 14, 00:50 UTCJul 14, 01:45 UTC55m
2026-07-13 RPA5738 LGA → BOS Jul 13, 22:10 UTCJul 13, 23:00 UTC50m
2026-07-13 RPA5738 LGA → BOS Jul 13, 22:09 UTCJul 13, 22:52 UTC43m
2026-07-13 RPA5715 - Jul 13, 19:45 UTCJul 13, 20:40 UTC55m
2026-07-13 RPA5715 - Jul 13, 17:15 UTCJul 13, 18:15 UTC1h 0m
2026-07-13 RPA5755 - Jul 13, 16:20 UTCJul 13, 16:25 UTC5m
2026-07-13 RPA5755 BOS → LGA Jul 13, 15:23 UTCJul 13, 16:04 UTC41m
2026-07-13 RPA5755 BOS → LGA Jul 13, 15:25 UTCJul 13, 16:25 UTC1h 0m
2026-07-13 RPA5687 - Jul 13, 12:50 UTCJul 13, 14:00 UTC1h 10m
2026-07-13 RPA5687 DCA → BOS Jul 13, 12:48 UTCJul 13, 13:58 UTC1h 10m
2026-07-13 RPA5687 BOS → DCA Jul 13, 10:10 UTCJul 13, 11:30 UTC1h 20m
2026-07-13 RPA5751 LGA → BOS Jul 13, 01:25 UTCJul 13, 02:01 UTC35m
2026-07-12 RPA5843 - Jul 12, 23:15 UTCJul 13, 00:15 UTC1h 0m
2026-07-12 RPA5843 LGA → PIT Jul 12, 20:40 UTCJul 12, 21:40 UTC1h 0m
2026-07-12 RPA5673 - Jul 12, 16:35 UTCJul 12, 18:55 UTC2h 20m
2026-07-12 RPA5673 MEM → LGA Jul 12, 16:29 UTCJul 12, 18:44 UTC2h 15m
2026-07-12 RPA5673 - Jul 12, 13:01 UTCJul 12, 15:10 UTC2h 10m
2026-07-12 RPA5811 - Jul 12, 10:55 UTCJul 12, 11:45 UTC50m
2026-07-11 RPA5665 - Jul 11, 22:45 UTCJul 11, 23:35 UTC50m
2026-07-11 RPA5665 - Jul 11, 22:15 UTCJul 11, 22:40 UTC25m
2026-07-11 RPA5600 DCA → BOS Jul 11, 19:20 UTCJul 11, 21:00 UTC1h 40m
2026-07-11 RPA5749 LGA → DCA Jul 11, 16:05 UTCJul 11, 16:55 UTC50m
2026-07-11 RPA5772 DCA → LGA Jul 11, 14:10 UTCJul 11, 14:55 UTC45m
2026-07-11 RPA5772 DCA → LGA Jul 11, 14:10 UTCJul 11, 14:57 UTC47m
2026-07-11 RPA5770 LGA → DCA Jul 11, 12:20 UTCJul 11, 13:15 UTC55m
2026-07-11 RPA5768 DCA → LGA Jul 11, 05:01 UTCJul 11, 05:40 UTC40m
2026-07-11 RPA5667 BOS → DCA Jul 11, 02:45 UTCJul 11, 03:55 UTC1h 10m
2026-07-10 RPA5600 - Jul 10, 20:35 UTCJul 10, 21:40 UTC1h 5m
2026-07-10 RPA5600 DCA → BOS Jul 10, 20:34 UTCJul 10, 21:30 UTC56m
2026-07-10 RPA5769 - Jul 10, 17:50 UTCJul 10, 19:10 UTC1h 20m
2026-07-10 RPA5783 - Jul 10, 16:10 UTCJul 10, 16:25 UTC15m
2026-07-10 RPA5783 DCA → BNA Jul 10, 14:47 UTCJul 10, 15:55 UTC1h 8m
2026-07-10 RPA5783 DCA → BNA Jul 10, 14:50 UTCJul 10, 16:25 UTC1h 35m
2026-07-10 RPA5708 BNA → DCA Jul 10, 11:40 UTCJul 10, 13:00 UTC1h 20m
2026-07-10 RPA5707 DCA → BNA Jul 10, 02:30 UTCJul 10, 03:50 UTC1h 20m
2026-07-09 RPA5786 BNA → DCA Jul 9, 23:00 UTCJul 10, 00:20 UTC1h 20m
2026-07-09 RPA5786 BNA → DCA Jul 9, 22:56 UTCJul 10, 00:16 UTC1h 20m
2026-07-09 RPA5777 DCA → BNA Jul 9, 19:50 UTCJul 9, 21:25 UTC1h 35m
2026-07-09 RPA5857 BOS → DCA Jul 9, 17:25 UTCJul 9, 18:50 UTC1h 25m
2026-07-09 RPA5728 LGA → BOS Jul 9, 14:20 UTCJul 9, 15:10 UTC50m
2026-07-09 RPA5625 - Jul 9, 11:05 UTCJul 9, 12:45 UTC1h 40m
2026-07-09 RPA5625 MKE → LGA Jul 9, 11:00 UTCJul 9, 12:41 UTC1h 41m
2026-07-09 RPA5780 - Jul 9, 01:20 UTCJul 9, 03:10 UTC1h 50m
2026-07-08 RPA5831 BOS → LGA Jul 8, 22:20 UTCJul 8, 23:00 UTC40m
2026-07-08 RPA5598 - Jul 8, 19:15 UTCJul 8, 21:05 UTC1h 50m
2026-07-08 RPA5598 CVG → BOS Jul 8, 19:13 UTCJul 8, 21:02 UTC1h 49m
2026-07-08 RPA5598 - Jul 8, 15:55 UTCJul 8, 17:55 UTC2h 0m
2026-07-08 RPA5845 - Jul 8, 13:50 UTCJul 8, 14:40 UTC50m
2026-07-08 RPA5845 BOS → PHL Jul 8, 10:55 UTCJul 8, 12:00 UTC1h 5m
2026-07-08 RPA5620 - Jul 8, 03:05 UTCJul 8, 04:50 UTC1h 45m

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 2h ago.
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, RPA5687, RPA5685, RPA5845, RPA5774.