Apparatus

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sensors Mode-S transponder

A866C7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N640RW · EMBRAER ERJ-170-100 · operated by REPUBLIC AIRWAYS INC

Hex
A866C7
Octal
52063307
Decimal
11,036,359
Country
US
Tail
N640RW
Type
E170
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
412
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A866C7.

Country allocation

The ICAO 24-bit address A866C7 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
RPA4486 Republic Airlines 33 2026-07-25
RPA4546 Republic Airlines 22 2026-07-25
RPA4556 Republic Airlines 20 2026-07-23
RPA4438 Republic Airlines 19 2026-07-20
RPA4605 - 18 2026-07-15
RPA4623 - 12 2026-06-26
RPA4388 - 12 2026-07-14
RPA4357 - 12 2026-07-14
RPA4797 - 11 2026-07-16
RPA4713 - 11 2026-06-30
RPA4550 Republic Airlines 10 2026-07-23
RPA4479 Republic Airlines 10 2026-07-22
RPA4381 Republic Airlines 10 2026-07-24
RPA4793 - 9 2026-07-13
RPA4614 - 8 2026-07-16
RPA4420 Republic Airlines 8 2026-07-21
RPA4502 Republic Airlines 7 2026-07-26
RPA4588 - 6 2026-07-16
RPA4458 - 6 2026-07-16
RPA4347 - 6 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA4509 LGA → RDU Jul 26, 20:30 UTCJul 26, 21:45 UTC1h 15m
2026-07-26 RPA4509 LGA → RDU Jul 26, 17:05 UTCJul 26, 19:10 UTC2h 5m
2026-07-26 RPA4502 BOS → STL Jul 26, 14:35 UTCJul 26, 15:25 UTC50m
2026-07-25 RPA4503 DCA → PWM Jul 25, 21:30 UTCJul 25, 22:20 UTC50m
2026-07-25 RPA4503 DCA → PWM Jul 25, 21:26 UTCJul 25, 22:21 UTC55m
2026-07-25 RPA4546 JFK → DCA Jul 25, 19:00 UTCJul 25, 19:50 UTC50m
2026-07-25 RPA4546 JFK → DCA Jul 25, 16:45 UTCJul 25, 17:20 UTC35m
2026-07-25 RPA4486 MEM → PHL Jul 25, 14:10 UTCJul 25, 15:15 UTC1h 5m
2026-07-25 RPA4486 MEM → PHL Jul 25, 12:20 UTCJul 25, 13:10 UTC50m
2026-07-24 RPA4528 PHL → CLE Jul 24, 23:00 UTCJul 24, 23:45 UTC45m
2026-07-24 RPA4528 PHL → CLE Jul 24, 22:58 UTCJul 24, 23:45 UTC47m
2026-07-24 RPA4528 PHL → CLE Jul 24, 21:35 UTCJul 24, 22:10 UTC35m
2026-07-24 RPA4381 BUF → ORD Jul 24, 19:10 UTCJul 24, 20:00 UTC50m
2026-07-24 RPA4381 BUF → ORD Jul 24, 17:10 UTCJul 24, 18:00 UTC50m
2026-07-24 RPA4483 RDU → LGA Jul 24, 15:10 UTCJul 24, 16:15 UTC1h 5m
2026-07-24 RPA4483 RDU → LGA Jul 24, 13:00 UTCJul 24, 14:15 UTC1h 15m
2026-07-23 RPA4556 BOS → YYZ Jul 23, 20:35 UTCJul 23, 20:40 UTC5m
2026-07-23 RPA4556 BOS → YYZ Jul 23, 19:30 UTCJul 23, 20:40 UTC1h 10m
2026-07-23 RPA4556 BOS → YYZ Jul 23, 19:28 UTCJul 23, 20:20 UTC52m
2026-07-23 RPA4556 BOS → YYZ Jul 23, 17:05 UTCJul 23, 18:10 UTC1h 5m
2026-07-23 RPA4550 YUL → LGA Jul 23, 14:45 UTCJul 23, 15:50 UTC1h 5m
2026-07-23 RPA4550 YUL → LGA Jul 23, 12:35 UTCJul 23, 13:30 UTC55m
2026-07-23 RPA4610 PHL → TVC Jul 23, 10:20 UTCJul 23, 11:10 UTC50m
2026-07-22 RPA4479 JFK → RDU Jul 22, 22:00 UTCJul 22, 23:00 UTC1h 0m
2026-07-22 RPA4379 ORD → ALB Jul 22, 20:10 UTCJul 22, 21:00 UTC50m
2026-07-22 RPA4379 ORD → ALB Jul 22, 20:06 UTCJul 22, 20:57 UTC51m
2026-07-22 RPA9931 IND → PIT Jul 22, 18:25 UTCJul 22, 19:20 UTC55m
2026-07-22 RPA4502 BOS → STL Jul 22, 15:25 UTCJul 22, 16:20 UTC55m
2026-07-22 RPA4502 BOS → STL Jul 22, 13:50 UTCJul 22, 14:35 UTC45m
2026-07-21 RPA4420 LGA → GSO Jul 21, 14:40 UTCJul 21, 15:40 UTC1h 0m
2026-07-21 RPA4420 LGA → GSO Jul 21, 12:05 UTCJul 21, 13:05 UTC1h 0m
2026-07-20 RPA4438 LGA → YYZ Jul 20, 23:45 UTCJul 21, 00:45 UTC1h 0m
2026-07-20 RPA4438 LGA → YYZ Jul 20, 21:30 UTCJul 20, 22:35 UTC1h 5m
2026-07-20 RPA4546 JFK → DCA Jul 20, 18:45 UTCJul 20, 19:30 UTC45m
2026-07-20 RPA4546 JFK → DCA Jul 20, 18:40 UTCJul 20, 19:27 UTC47m
2026-07-20 RPA4546 JFK → DCA Jul 20, 16:55 UTCJul 20, 17:35 UTC40m
2026-07-20 RPA4420 - Jul 20, 15:10 UTCJul 20, 16:00 UTC50m
2026-07-19 RPA9947 LGA → CMH Jul 19, 04:15 UTCJul 19, 05:15 UTC1h 0m
2026-07-17 RPA4471 - Jul 17, 22:15 UTCJul 17, 23:10 UTC55m
2026-07-17 RPA4471 ORF → LGA Jul 17, 22:14 UTCJul 17, 23:08 UTC54m
2026-07-17 RPA4471 LGA → ORF Jul 17, 20:25 UTCJul 17, 21:20 UTC55m
2026-07-17 RPA4570 - Jul 17, 17:55 UTCJul 17, 18:55 UTC1h 0m
2026-07-17 RPA4570 LGA → MVY Jul 17, 16:29 UTCJul 17, 16:59 UTC30m
2026-07-17 RPA4586 - Jul 17, 11:30 UTCJul 17, 13:00 UTC1h 30m
2026-07-17 RPA4583 LGA → CHS Jul 17, 01:42 UTCJul 17, 03:16 UTC1h 34m
2026-07-17 RPA4583 - Jul 17, 01:45 UTCJul 17, 03:20 UTC1h 35m
2026-07-16 RPA4588 - Jul 16, 22:19 UTCJul 16, 23:44 UTC1h 25m
2026-07-16 RPA4588 CHS → LGA Jul 16, 22:15 UTCJul 16, 23:49 UTC1h 34m
2026-07-16 RPA4588 - Jul 16, 19:30 UTCJul 16, 21:05 UTC1h 35m
2026-07-16 RPA4614 - Jul 16, 16:15 UTCJul 16, 17:54 UTC1h 40m

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 N640RW page for operator, model, and routing details .

Mode-S A866C7 frequently asked

What is Mode-S code A866C7?
A866C7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N640RW.
Where is Mode-S A866C7 registered?
Mode-S code A866C7 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 A866C7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A866C7, octal 52063307, decimal 11,036,359.
What flights does A866C7 operate?
Mode-S A866C7 has broadcast 20 distinct callsigns, including RPA4486, RPA4546, RPA4556, RPA4438, RPA4605.