Apparatus

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sensors Mode-S transponder

ABC2E5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N857RW · EMBRAER ERJ-170-100 · operated by REPUBLIC AIRWAYS INC

Hex
ABC2E5
Octal
52741345
Decimal
11,256,549
Country
US
Tail
N857RW
Type
E170
Broadcasting now · callsign RPA4497 · 29,000 ft
Flights observed
311
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

ABC2E5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABC2E5 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 Republic Airlines 18 2026-06-04
RPA4423 Republic Airlines 14 2026-06-03
RPA4385 Republic Airlines 11 2026-05-10
RPA4462 Republic Airlines 10 2026-05-15
RPA4623 Republic Airlines 9 2026-06-02
RPA4578 Republic Airlines 9 2026-06-04
RPA4438 Republic Airlines 9 2026-05-30
RPA4381 Republic Airlines 9 2026-06-01
RPA4577 Republic Airlines 8 2026-06-04
RPA4390 Republic Airlines 8 2026-05-09
RPA4722 Republic Airlines 7 2026-05-16
RPA4614 Republic Airlines 7 2026-06-03
RPA4556 Republic Airlines 7 2026-05-21
RPA4677 Republic Airlines 6 2026-05-07
RPA4610 Republic Airlines 6 2026-05-18
RPA4503 Republic Airlines 6 2026-06-01
RPA4448 Republic Airlines 6 2026-05-06
RPA4424 Republic Airlines 6 2026-05-28
RPA4753 Republic Airlines 5 2026-05-12
RPA4591 Republic Airlines 5 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-04 RPA4497 PIT → PHL Jun 4, 17:45 UTCJun 4, 19:00 UTC1h 15m
2026-06-04 RPA4347 ORD → CLE Jun 4, 15:05 UTCJun 4, 16:10 UTC1h 5m
2026-06-04 RPA4347 ORD → CLE Jun 4, 15:05 UTCJun 4, 16:10 UTC1h 5m
2026-06-04 RPA4347 ORD → CLE Jun 4, 12:40 UTCJun 4, 13:35 UTC55m
2026-06-04 RPA4578 ALB → MIA Jun 4, 10:15 UTCJun 4, 11:35 UTC1h 20m
2026-06-04 RPA4577 JFK → DCA Jun 4, 01:10 UTCJun 4, 02:15 UTC1h 5m
2026-06-03 RPA4423 LGA → ILM Jun 3, 22:20 UTCJun 4, 00:05 UTC1h 45m
2026-06-03 RPA4423 LGA → ILM Jun 3, 22:19 UTCJun 3, 23:56 UTC1h 37m
2026-06-03 RPA4423 LGA → ILM Jun 3, 20:05 UTCJun 3, 21:30 UTC1h 25m
2026-06-03 RPA4614 IND → LGA Jun 3, 16:20 UTCJun 3, 18:05 UTC1h 45m
2026-06-03 RPA4614 IND → LGA Jun 3, 16:19 UTCJun 3, 18:04 UTC1h 45m
2026-06-03 RPA4614 IND → LGA Jun 3, 13:25 UTCJun 3, 14:50 UTC1h 25m
2026-06-03 RPA4751 JFK → DCA Jun 3, 10:10 UTCJun 3, 11:45 UTC1h 35m
2026-06-02 RPA4423 LGA → ILM Jun 2, 19:45 UTCJun 2, 21:15 UTC1h 30m
2026-06-02 RPA4423 LGA → ILM Jun 2, 19:05 UTCJun 2, 19:10 UTC5m
2026-06-02 RPA4623 DCA → ATL Jun 2, 17:00 UTCJun 2, 18:15 UTC1h 15m
2026-06-02 RPA4623 DCA → ATL Jun 2, 14:45 UTCJun 2, 15:40 UTC55m
2026-06-02 RPA4377 GSO → LGA Jun 2, 12:23 UTCJun 2, 13:17 UTC54m
2026-06-02 RPA4377 GSO → LGA Jun 2, 12:25 UTCJun 2, 13:25 UTC1h 0m
2026-06-02 RPA4377 GSO → LGA Jun 2, 10:15 UTCJun 2, 10:55 UTC40m
2026-06-01 RPA4503 DCA → PWM Jun 1, 23:40 UTCJun 2, 00:35 UTC55m
2026-06-01 RPA4503 DCA → PWM Jun 1, 23:40 UTCJun 2, 00:30 UTC50m
2026-06-01 RPA4503 DCA → PWM Jun 1, 21:50 UTCJun 1, 22:40 UTC50m
2026-06-01 RPA4381 BUF → ORD Jun 1, 19:55 UTCJun 1, 20:55 UTC1h 0m
2026-06-01 RPA4381 BUF → ORD Jun 1, 19:51 UTCJun 1, 20:53 UTC1h 2m
2026-06-01 RPA4381 BUF → ORD Jun 1, 17:55 UTCJun 1, 18:45 UTC50m
2026-06-01 RPA4347 ORD → CLE Jun 1, 15:10 UTCJun 1, 16:20 UTC1h 10m
2026-06-01 RPA4347 ORD → CLE Jun 1, 15:09 UTCJun 1, 15:59 UTC50m
2026-06-01 RPA4347 ORD → CLE Jun 1, 12:45 UTCJun 1, 13:55 UTC1h 10m
2026-06-01 RPA4578 ALB → MIA Jun 1, 10:20 UTCJun 1, 11:35 UTC1h 15m
2026-06-01 RPA4577 JFK → DCA Jun 1, 01:40 UTCJun 1, 02:45 UTC1h 5m
2026-05-31 RPA4423 LGA → ILM May 31, 22:10 UTCMay 31, 23:35 UTC1h 25m
2026-05-31 RPA4423 LGA → ILM May 31, 22:08 UTCMay 31, 23:34 UTC1h 26m
2026-05-31 RPA4423 LGA → ILM May 31, 19:20 UTCMay 31, 20:50 UTC1h 30m
2026-05-31 RPA4343 BNA → PHL May 31, 16:15 UTCMay 31, 17:20 UTC1h 5m
2026-05-31 RPA4343 BNA → PHL May 31, 14:30 UTCMay 31, 15:35 UTC1h 5m
2026-05-31 RPA4542 YYZ → LGA May 31, 11:35 UTCMay 31, 12:30 UTC55m
2026-05-30 RPA4438 LGA → YYZ May 30, 21:20 UTCMay 30, 22:25 UTC1h 5m
2026-05-30 RPA4506 BNA → LGA May 30, 19:00 UTCMay 30, 20:05 UTC1h 5m
2026-05-30 RPA4506 BNA → LGA May 30, 16:00 UTCMay 30, 17:05 UTC1h 5m
2026-05-30 RPA4357 BOS → DCA May 30, 13:15 UTCMay 30, 14:45 UTC1h 30m
2026-05-29 RPA4793 LGA → IND May 29, 22:10 UTCMay 29, 23:55 UTC1h 45m
2026-05-29 RPA4381 BUF → ORD May 29, 20:10 UTCMay 29, 21:05 UTC55m
2026-05-29 RPA4381 BUF → ORD May 29, 20:06 UTCMay 29, 20:59 UTC53m
2026-05-29 RPA4381 BUF → ORD May 29, 18:25 UTCMay 29, 19:10 UTC45m
2026-05-29 RPA4483 RDU → LGA May 29, 15:20 UTCMay 29, 16:10 UTC50m
2026-05-29 RPA4483 RDU → LGA May 29, 12:55 UTCMay 29, 13:55 UTC1h 0m
2026-05-29 RPA4670 LGA → ATL May 29, 10:05 UTCMay 29, 11:35 UTC1h 30m
2026-05-29 RPA4667 IND → PHL May 29, 01:38 UTCMay 29, 03:04 UTC1h 26m
2026-05-29 RPA4667 IND → PHL May 29, 01:40 UTCMay 29, 03:05 UTC1h 25m

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 N857RW page for operator, model, and routing details .

Mode-S ABC2E5 frequently asked

What is Mode-S code ABC2E5?
ABC2E5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N857RW.
Where is Mode-S ABC2E5 registered?
Mode-S code ABC2E5 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 ABC2E5 broadcasting right now?
Yes. Mode-S ABC2E5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC2E5, octal 52741345, decimal 11,256,549.
What flights does ABC2E5 operate?
Mode-S ABC2E5 has broadcast 20 distinct callsigns, including RPA4347, RPA4423, RPA4385, RPA4462, RPA4623.