Apparatus

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sensors Mode-S transponder

ABD41A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N861RW · EMBRAER ERJ-170-100 · operated by REPUBLIC AIRWAYS INC

Hex
ABD41A
Octal
52752032
Decimal
11,260,954
Country
US
Tail
N861RW
Type
E170
No current signal · last broadcast 1h ago
Flights observed
623
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ABD41A.

Country allocation

The ICAO 24-bit address ABD41A 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
RPA4347 - 32 2026-07-12
RPA4479 - 29 2026-07-12
RPA4591 - 27 2026-07-13
RPA4502 - 23 2026-07-10
RPA4623 - 20 2026-07-01
RPA4550 - 16 2026-07-04
RPA4546 Republic Airlines 16 2026-06-30
RPA4377 - 15 2026-07-02
RPA4797 - 14 2026-06-18
RPA4593 - 12 2026-07-12
RPA4578 Republic Airlines 12 2026-06-29
RPA4507 Republic Airlines 12 2026-05-21
RPA4404 - 12 2026-06-17
RPA4438 - 11 2026-07-02
RPA4497 - 10 2026-07-11
RPA4410 - 10 2026-07-07
RPA4427 Republic Airlines 9 2026-05-17
RPA4423 - 9 2026-06-28
RPA4385 Republic Airlines 9 2026-05-16
RPA4682 Republic Airlines 8 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RPA4667 - Jul 14, 00:55 UTCJul 14, 02:25 UTC1h 30m
2026-07-13 RPA4471 ORF → LGA Jul 13, 22:15 UTCJul 13, 23:15 UTC1h 0m
2026-07-13 RPA4471 LGA → ORF Jul 13, 20:15 UTCJul 13, 21:15 UTC1h 0m
2026-07-13 RPA4570 MVY → LGA Jul 13, 17:55 UTCJul 13, 18:40 UTC45m
2026-07-13 RPA4570 LGA → MVY Jul 13, 16:20 UTCJul 13, 17:00 UTC40m
2026-07-13 RPA4591 - Jul 13, 13:20 UTCJul 13, 15:10 UTC1h 50m
2026-07-13 RPA4591 MSN → LGA Jul 13, 13:16 UTCJul 13, 15:10 UTC1h 54m
2026-07-12 RPA4593 - Jul 12, 22:15 UTCJul 13, 00:05 UTC1h 50m
2026-07-12 RPA4479 - Jul 12, 19:50 UTCJul 12, 20:45 UTC55m
2026-07-12 RPA4479 PIT → LGA Jul 12, 19:46 UTCJul 12, 20:45 UTC59m
2026-07-12 RPA4479 - Jul 12, 17:30 UTCJul 12, 18:30 UTC1h 0m
2026-07-12 RPA4347 YYZ → LGA Jul 12, 15:10 UTCJul 12, 16:16 UTC1h 6m
2026-07-12 RPA4347 YYZ → LGA Jul 12, 15:10 UTCJul 12, 16:20 UTC1h 10m
2026-07-12 RPA4347 LGA → YYZ Jul 12, 12:40 UTCJul 12, 13:45 UTC1h 5m
2026-07-11 RPA4497 - Jul 11, 19:45 UTCJul 11, 21:00 UTC1h 15m
2026-07-11 RPA4497 LGA → RDU Jul 11, 16:45 UTCJul 11, 17:55 UTC1h 10m
2026-07-11 RPA4591 - Jul 11, 14:05 UTCJul 11, 15:55 UTC1h 50m
2026-07-11 RPA4593 LGA → MSN Jul 11, 00:35 UTCJul 11, 02:35 UTC2h 0m
2026-07-10 RPA4479 - Jul 10, 20:45 UTCJul 10, 22:10 UTC1h 25m
2026-07-10 RPA4479 PIT → LGA Jul 10, 20:40 UTCJul 10, 22:06 UTC1h 26m
2026-07-10 RPA4479 - Jul 10, 17:55 UTCJul 10, 18:55 UTC1h 0m
2026-07-10 RPA4502 - Jul 10, 15:35 UTCJul 10, 16:35 UTC1h 0m
2026-07-10 RPA4502 PWM → LGA Jul 10, 15:31 UTCJul 10, 16:25 UTC54m
2026-07-10 RPA4502 - Jul 10, 13:25 UTCJul 10, 14:10 UTC45m
2026-07-10 RPA4595 BOS → MEM Jul 10, 10:20 UTCJul 10, 12:10 UTC1h 50m
2026-07-10 RPA4599 LGA → ATL Jul 10, 06:05 UTCJul 10, 07:45 UTC1h 40m
2026-07-09 RPA4509 STL → LGA Jul 9, 21:40 UTCJul 9, 23:40 UTC2h 0m
2026-07-09 RPA4509 LGA → STL Jul 9, 18:40 UTCJul 9, 20:50 UTC2h 10m
2026-07-09 RPA4373 BOS → LGA Jul 9, 16:25 UTCJul 9, 17:15 UTC50m
2026-07-09 RPA4373 LGA → BOS Jul 9, 13:30 UTCJul 9, 14:10 UTC40m
2026-07-09 RPA4670 - Jul 9, 10:20 UTCJul 9, 11:45 UTC1h 25m
2026-07-09 RPA4670 CAE → LGA Jul 9, 10:16 UTCJul 9, 11:39 UTC1h 23m
2026-07-09 RPA4667 - Jul 9, 00:55 UTCJul 9, 02:25 UTC1h 30m
2026-07-08 RPA4471 ORF → LGA Jul 8, 22:55 UTCJul 8, 23:55 UTC1h 0m
2026-07-08 RPA4471 LGA → ORF Jul 8, 20:05 UTCJul 8, 21:00 UTC55m
2026-07-08 RPA4570 - Jul 8, 18:15 UTCJul 8, 19:00 UTC45m
2026-07-08 RPA4570 - Jul 8, 16:15 UTCJul 8, 16:50 UTC35m
2026-07-08 RPA4591 - Jul 8, 13:10 UTCJul 8, 15:00 UTC1h 50m
2026-07-07 RPA4593 LGA → MSN Jul 7, 22:35 UTCJul 8, 00:35 UTC2h 0m
2026-07-07 RPA4479 - Jul 7, 19:45 UTCJul 7, 20:35 UTC50m
2026-07-07 RPA4479 PIT → LGA Jul 7, 19:40 UTCJul 7, 20:34 UTC54m
2026-07-07 RPA4479 - Jul 7, 17:40 UTCJul 7, 18:40 UTC1h 0m
2026-07-07 RPA4347 - Jul 7, 15:20 UTCJul 7, 16:30 UTC1h 10m
2026-07-07 RPA4347 LGA → YYZ Jul 7, 12:50 UTCJul 7, 13:55 UTC1h 5m
2026-07-07 RPA4610 - Jul 7, 10:25 UTCJul 7, 11:20 UTC55m
2026-07-07 RPA4410 LGA → PIT Jul 7, 00:22 UTCJul 7, 01:17 UTC55m
2026-07-07 RPA4410 LGA → PIT Jul 7, 00:25 UTCJul 7, 01:20 UTC55m
2026-07-06 RPA4605 ATL → LGA Jul 6, 21:00 UTCJul 6, 22:45 UTC1h 45m
2026-07-06 RPA4605 LGA → ATL Jul 6, 16:25 UTCJul 6, 18:20 UTC1h 55m
2026-07-06 RPA4420 - Jul 6, 14:00 UTCJul 6, 14:50 UTC50m

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 N861RW page for operator, model, and routing details .

Mode-S ABD41A frequently asked

What is Mode-S code ABD41A?
ABD41A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N861RW.
Where is Mode-S ABD41A registered?
Mode-S code ABD41A 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 ABD41A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABD41A, octal 52752032, decimal 11,260,954.
What flights does ABD41A operate?
Mode-S ABD41A has broadcast 20 distinct callsigns, including RPA4347, RPA4479, RPA4591, RPA4502, RPA4623.