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sensors Mode-S transponder

A8A0D9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N655RW · EMBRAER ERJ-170-100 · operated by REPUBLIC AIRWAYS INC

Hex
A8A0D9
Octal
52120331
Decimal
11,051,225
Country
US
Tail
N655RW
Type
E170
Broadcasting now · callsign RPA4347 · 25,350 ft
Flights observed
610
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A8A0D9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8A0D9 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
RPA4556 - 25 2026-07-06
RPA4445 Republic Airlines 22 2026-05-15
RPA4605 - 18 2026-07-10
RPA4388 - 18 2026-07-13
RPA4753 Republic Airlines 17 2026-05-14
RPA4387 Republic Airlines 17 2026-05-24
RPA4749 - 15 2026-07-07
RPA4623 - 14 2026-07-09
RPA4773 - 13 2026-07-08
RPA4546 - 13 2026-07-11
RPA4438 - 13 2026-07-13
RPA4381 - 13 2026-07-03
RPA4591 - 12 2026-07-02
RPA4420 - 12 2026-07-11
RPA4610 - 11 2026-07-03
RPA4433 Republic Airlines 11 2026-05-18
RPA4713 - 10 2026-06-18
RPA4570 - 10 2026-07-02
RPA4509 - 10 2026-07-04
RPA4503 - 10 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RPA4347 - Jul 14, 14:05 UTCJul 14, 14:15 UTC10m
2026-07-14 RPA4377 BOS → LGA Jul 14, 12:20 UTCJul 14, 13:00 UTC40m
2026-07-14 RPA4377 LGA → BOS Jul 14, 10:05 UTCJul 14, 10:50 UTC45m
2026-07-13 RPA4438 YYZ → LGA Jul 13, 23:55 UTCJul 14, 01:00 UTC1h 5m
2026-07-13 RPA4438 LGA → YYZ Jul 13, 21:05 UTCJul 13, 22:10 UTC1h 5m
2026-07-13 RPA4388 - Jul 13, 18:20 UTCJul 13, 19:30 UTC1h 10m
2026-07-13 RPA4388 CLE → LGA Jul 13, 18:18 UTCJul 13, 19:28 UTC1h 10m
2026-07-13 RPA4388 LGA → CLE Jul 13, 15:50 UTCJul 13, 17:05 UTC1h 15m
2026-07-13 RPA4357 - Jul 13, 13:10 UTCJul 13, 14:45 UTC1h 35m
2026-07-12 RPA4458 LGA → IND Jul 12, 23:15 UTCJul 13, 00:50 UTC1h 35m
2026-07-12 RPA4497 - Jul 12, 20:20 UTCJul 12, 21:30 UTC1h 10m
2026-07-12 RPA4497 LGA → RDU Jul 12, 17:50 UTCJul 12, 19:05 UTC1h 15m
2026-07-12 RPA4502 - Jul 12, 14:45 UTCJul 12, 15:30 UTC45m
2026-07-11 RPA4503 - Jul 11, 20:55 UTCJul 11, 22:01 UTC1h 5m
2026-07-11 RPA4546 - Jul 11, 18:45 UTCJul 11, 19:35 UTC50m
2026-07-11 RPA4546 - Jul 11, 16:50 UTCJul 11, 17:20 UTC30m
2026-07-11 RPA4420 - Jul 11, 13:55 UTCJul 11, 15:45 UTC1h 50m
2026-07-11 RPA4526 LGA → YHZ Jul 11, 01:07 UTCJul 11, 02:25 UTC1h 18m
2026-07-11 RPA4526 - Jul 11, 01:10 UTCJul 11, 02:25 UTC1h 15m
2026-07-10 RPA4605 ATL → LGA Jul 10, 19:16 UTCJul 10, 21:07 UTC1h 51m
2026-07-10 RPA4605 ATL → LGA Jul 10, 19:15 UTCJul 10, 21:05 UTC1h 51m
2026-07-10 RPA4605 LGA → ATL Jul 10, 15:55 UTCJul 10, 17:55 UTC2h 0m
2026-07-10 RPA4420 - Jul 10, 14:00 UTCJul 10, 14:55 UTC55m
2026-07-10 RPA4420 PIT → LGA Jul 10, 13:55 UTCJul 10, 14:54 UTC59m
2026-07-10 RPA4420 - Jul 10, 11:50 UTCJul 10, 12:45 UTC55m
2026-07-09 RPA4623 YYZ → LGA Jul 9, 19:30 UTCJul 9, 20:35 UTC1h 5m
2026-07-09 RPA4623 LGA → YYZ Jul 9, 14:30 UTCJul 9, 15:30 UTC1h 0m
2026-07-09 RPA4377 BOS → LGA Jul 9, 12:20 UTCJul 9, 13:00 UTC40m
2026-07-09 RPA4377 LGA → BOS Jul 9, 10:10 UTCJul 9, 10:50 UTC40m
2026-07-08 RPA4503 - Jul 8, 23:55 UTCJul 9, 00:45 UTC50m
2026-07-08 RPA4503 RIC → LGA Jul 8, 23:50 UTCJul 9, 00:40 UTC50m
2026-07-08 RPA4503 - Jul 8, 22:05 UTCJul 8, 23:10 UTC1h 5m
2026-07-08 RPA4773 DCA → LGA Jul 8, 19:35 UTCJul 8, 20:20 UTC45m
2026-07-08 RPA4809 JFK → CVG Jul 8, 15:55 UTCJul 8, 17:30 UTC1h 35m
2026-07-08 RPA4622 - Jul 8, 10:55 UTCJul 8, 11:50 UTC55m
2026-07-08 RPA4466 - Jul 8, 02:45 UTCJul 8, 03:10 UTC25m
2026-07-08 RPA4466 - Jul 8, 01:45 UTCJul 8, 02:15 UTC30m
2026-07-08 RPA4466 PHL → SDF Jul 8, 01:02 UTCJul 8, 02:30 UTC1h 28m
2026-07-07 RPA4749 PHL → PHL Jul 7, 22:55 UTCJul 7, 23:00 UTC5m
2026-07-07 RPA4749 ORF → PHL Jul 7, 22:10 UTCJul 7, 22:50 UTC40m
2026-07-07 RPA4749 ORF → PHL Jul 7, 22:09 UTCJul 7, 22:35 UTC26m
2026-07-07 RPA4749 PHL → ORF Jul 7, 20:30 UTCJul 7, 21:15 UTC45m
2026-07-07 RPA4430 - Jul 7, 17:05 UTCJul 7, 18:05 UTC1h 0m
2026-07-07 RPA4561 PHL → HYA Jul 7, 15:13 UTCJul 7, 15:48 UTC35m
2026-07-07 RPA4561 - Jul 7, 15:15 UTCJul 7, 16:05 UTC50m
2026-07-07 RPA4613 - Jul 7, 12:00 UTCJul 7, 13:15 UTC1h 15m
2026-07-07 RPA4793 LGA → IND Jul 7, 01:20 UTCJul 7, 03:05 UTC1h 45m
2026-07-06 RPA4556 YYZ → LGA Jul 6, 21:10 UTCJul 6, 22:20 UTC1h 10m
2026-07-06 RPA4556 YYZ → LGA Jul 6, 21:09 UTCJul 6, 22:17 UTC1h 8m
2026-07-06 RPA4556 LGA → YYZ Jul 6, 17:40 UTCJul 6, 18:45 UTC1h 5m

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 N655RW page for operator, model, and routing details .

Mode-S A8A0D9 frequently asked

What is Mode-S code A8A0D9?
A8A0D9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N655RW.
Where is Mode-S A8A0D9 registered?
Mode-S code A8A0D9 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 A8A0D9 broadcasting right now?
Yes. Mode-S A8A0D9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8A0D9, octal 52120331, decimal 11,051,225.
What flights does A8A0D9 operate?
Mode-S A8A0D9 has broadcast 20 distinct callsigns, including RPA4556, RPA4445, RPA4605, RPA4388, RPA4753.