Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1C57E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N213JQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A1C57E
Octal
50342576
Decimal
10,601,854
Country
US
Tail
N213JQ
Type
E75L
No current signal · last broadcast Jul 23, 10:55 UTC
Flights observed
737
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 10:55 UTC

Last known position

Most recent position reported by Mode-S A1C57E.

Country allocation

The ICAO 24-bit address A1C57E 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
RPA5810 - 11 2026-07-17
RPA5764 - 11 2026-06-15
RPA5644 - 11 2026-07-03
RPA5601 Republic Airlines 11 2026-07-21
RPA5800 - 10 2026-07-17
RPA5846 - 9 2026-07-18
RPA5831 - 9 2026-06-29
RPA5731 - 9 2026-04-15
RPA5728 - 9 2026-06-30
RPA5732 - 8 2026-07-08
RPA5687 - 8 2026-07-12
RPA5647 Republic Airlines 8 2026-05-21
RPA5598 Republic Airlines 8 2026-04-16
RPA5857 - 7 2026-06-19
RPA5842 - 7 2026-07-04
RPA5837 - 7 2026-07-19
RPA5828 - 7 2026-07-13
RPA5793 - 7 2026-06-29
RPA5789 - 7 2026-07-20
RPA5706 - 7 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 RPA5873 JFK → IND Jul 23, 10:10 UTCJul 23, 10:55 UTC45m
2026-07-23 RPA5696 BOS → CLT Jul 23, 01:45 UTCJul 23, 03:35 UTC1h 50m
2026-07-22 RPA5638 DCA → BOS Jul 22, 21:55 UTCJul 22, 23:35 UTC1h 40m
2026-07-22 RPA5638 DCA → BOS Jul 22, 21:51 UTCJul 22, 23:32 UTC1h 41m
2026-07-22 RPA5821 LGA → DCA Jul 22, 18:25 UTCJul 22, 20:15 UTC1h 50m
2026-07-22 RPA5821 LGA → DCA Jul 22, 18:25 UTCJul 22, 20:19 UTC1h 54m
2026-07-22 RPA5761 LGA → BNH Jul 22, 16:15 UTCJul 22, 17:00 UTC45m
2026-07-22 RPA5744 BOS → LGA Jul 22, 14:20 UTCJul 22, 15:05 UTC45m
2026-07-22 RPA5759 LGA → BNH Jul 22, 12:25 UTCJul 22, 13:15 UTC50m
2026-07-21 RPA5726 RIC → BOS Jul 21, 23:40 UTCJul 22, 00:25 UTC45m
2026-07-21 RPA5726 RIC → BOS Jul 21, 23:38 UTCJul 22, 00:26 UTC48m
2026-07-21 RPA5601 BWI → BOS Jul 21, 16:30 UTCJul 21, 18:05 UTC1h 35m
2026-07-21 RPA5601 BWI → BOS Jul 21, 13:20 UTCJul 21, 15:35 UTC2h 15m
2026-07-21 RPA5813 BOS → DCA Jul 21, 10:30 UTCJul 21, 11:30 UTC1h 0m
2026-07-21 RPA5851 - Jul 21, 01:30 UTCJul 21, 02:35 UTC1h 5m
2026-07-20 RPA5789 - Jul 20, 22:35 UTCJul 21, 00:15 UTC1h 39m
2026-07-20 RPA5789 BOS → CVG Jul 20, 18:40 UTCJul 20, 20:30 UTC1h 50m
2026-07-20 RPA5628 - Jul 20, 15:40 UTCJul 20, 17:35 UTC1h 55m
2026-07-20 RPA5628 BOS → IND Jul 20, 12:40 UTCJul 20, 14:35 UTC1h 55m
2026-07-20 RPA5852 LGA → BNH Jul 20, 10:20 UTCJul 20, 11:05 UTC45m
2026-07-20 RPA5609 BOS → LGA Jul 20, 01:30 UTCJul 20, 02:20 UTC50m
2026-07-19 RPA5837 - Jul 19, 22:20 UTCJul 20, 00:00 UTC1h 40m
2026-07-19 RPA5837 CLT → BOS Jul 19, 22:18 UTCJul 20, 00:00 UTC1h 42m
2026-07-19 RPA5837 - Jul 19, 18:40 UTCJul 19, 20:55 UTC2h 15m
2026-07-19 RPA5693 CHS → BOS Jul 19, 16:20 UTCJul 19, 17:25 UTC1h 5m
2026-07-19 RPA5693 CHS → BOS Jul 19, 13:55 UTCJul 19, 15:05 UTC1h 10m
2026-07-19 RPA5698 DCA → BNH Jul 19, 11:20 UTCJul 19, 12:25 UTC1h 5m
2026-07-19 RPA5788 CLT → BOS Jul 19, 02:45 UTCJul 19, 03:30 UTC45m
2026-07-19 RPA5788 CLT → BOS Jul 19, 02:45 UTCJul 19, 03:43 UTC58m
2026-07-18 RPA5614 LGA → OKC Jul 18, 20:10 UTCJul 18, 21:00 UTC50m
2026-07-18 RPA5846 - Jul 18, 18:35 UTCJul 18, 19:10 UTC35m
2026-07-18 RPA5683 - Jul 18, 16:15 UTCJul 18, 16:40 UTC25m
2026-07-18 RPA5683 GRR → DTW Jul 18, 16:13 UTCJul 18, 16:41 UTC28m
2026-07-18 RPA5683 - Jul 18, 14:40 UTCJul 18, 15:05 UTC25m
2026-07-18 RPA5701 LGA → JAX Jul 18, 10:45 UTCJul 18, 11:25 UTC40m
2026-07-18 RPA5634 - Jul 18, 03:00 UTCJul 18, 03:35 UTC35m
2026-07-17 RPA5800 - Jul 17, 23:39 UTCJul 18, 00:04 UTC25m
2026-07-17 RPA5800 - Jul 17, 22:10 UTCJul 17, 22:40 UTC30m
2026-07-17 RPA5846 - Jul 17, 20:04 UTCJul 17, 20:50 UTC45m
2026-07-17 RPA5846 - Jul 17, 18:15 UTCJul 17, 19:05 UTC50m
2026-07-17 RPA5810 - Jul 17, 16:19 UTCJul 17, 16:55 UTC35m
2026-07-17 RPA5810 - Jul 17, 14:39 UTCJul 17, 15:15 UTC35m
2026-07-17 RPA5812 - Jul 17, 12:19 UTCJul 17, 13:05 UTC45m
2026-07-17 RPA5838 - Jul 17, 00:10 UTCJul 17, 00:45 UTC35m
2026-07-17 RPA5838 DTW → CMH Jul 17, 00:09 UTCJul 17, 00:38 UTC29m
2026-07-16 RPA5766 LGA → BOS Jul 16, 22:15 UTCJul 16, 22:59 UTC45m
2026-07-16 RPA5685 - Jul 16, 19:25 UTCJul 16, 20:19 UTC55m
2026-07-16 RPA5835 IAD → JFK Jul 16, 17:00 UTCJul 16, 17:49 UTC50m
2026-07-16 RPA5835 JFK → IAD Jul 16, 14:50 UTCJul 16, 15:35 UTC45m
2026-07-16 RPA5741 - Jul 16, 11:30 UTCJul 16, 13:20 UTC1h 50m

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 N213JQ page for operator, model, and routing details .

Mode-S A1C57E frequently asked

What is Mode-S code A1C57E?
A1C57E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N213JQ.
Where is Mode-S A1C57E registered?
Mode-S code A1C57E 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 A1C57E broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 10:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C57E, octal 50342576, decimal 10,601,854.
What flights does A1C57E operate?
Mode-S A1C57E has broadcast 20 distinct callsigns, including RPA5810, RPA5764, RPA5644, RPA5601, RPA5800.