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sensors Mode-S transponder

AA5657

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N765YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AA5657
Octal
52453127
Decimal
11,163,223
Country
US
Tail
N765YX
Type
E75L
Broadcasting now · callsign RPA3700 · 13,950 ft
Flights observed
686
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Current position

AA5657 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA5657 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
RPA3467 - 9 2026-07-05
RPA3548 - 8 2026-07-17
RPA3473 Republic Airlines 8 2026-07-24
RPA3588 Republic Airlines 7 2026-07-22
RPA3572 Republic Airlines 7 2026-07-26
RPA3533 - 7 2026-06-20
RPA3494 - 7 2026-06-18
RPA3457 - 7 2026-07-08
RPA3443 Republic Airlines 7 2026-06-08
RPA3405 - 7 2026-07-17
RPA3715 - 6 2026-06-28
RPA3714 Republic Airlines 6 2026-07-20
RPA3652 Republic Airlines 6 2026-06-17
RPA3606 - 6 2026-07-20
RPA3584 Republic Airlines 6 2026-07-23
RPA3480 - 6 2026-07-13
RPA3446 Republic Airlines 6 2026-07-25
RPA3424 - 6 2026-07-20
RPA3409 Republic Airlines 6 2026-07-25
RPA3679 - 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3450 DCA → EWR Jul 26, 19:00 UTCJul 26, 20:25 UTC1h 25m
2026-07-26 RPA3450 DCA → EWR Jul 26, 15:45 UTCJul 26, 17:10 UTC1h 25m
2026-07-26 RPA3544 EWR → YYZ Jul 26, 13:15 UTCJul 26, 13:45 UTC30m
2026-07-26 RPA3544 EWR → YYZ Jul 26, 13:17 UTCJul 26, 14:02 UTC45m
2026-07-26 RPA3572 EWR → YYZ Jul 26, 02:50 UTCJul 26, 03:25 UTC35m
2026-07-26 RPA3444 EWR → GSO Jul 26, 00:05 UTCJul 26, 00:55 UTC50m
2026-07-25 RPA3570 CHS → EWR Jul 25, 22:00 UTCJul 25, 22:50 UTC50m
2026-07-25 RPA3570 CHS → EWR Jul 25, 22:07 UTCJul 25, 22:46 UTC39m
2026-07-25 RPA3427 EWR → CVG Jul 25, 19:25 UTCJul 25, 20:00 UTC35m
2026-07-25 RPA3446 CLT → EWR Jul 25, 16:10 UTCJul 25, 17:40 UTC1h 30m
2026-07-25 RPA3409 BOS → EWR Jul 25, 13:25 UTCJul 25, 14:35 UTC1h 10m
2026-07-25 RPA3409 BOS → EWR Jul 25, 13:30 UTCJul 25, 14:35 UTC1h 5m
2026-07-25 RPA3412 BGR → EWR Jul 25, 01:50 UTCJul 25, 03:10 UTC1h 20m
2026-07-24 RPA3527 EWR → SDF Jul 24, 22:20 UTCJul 24, 23:45 UTC1h 25m
2026-07-24 RPA3473 SAV → EWR Jul 24, 19:05 UTCJul 24, 20:30 UTC1h 25m
2026-07-24 RPA3473 SAV → EWR Jul 24, 19:02 UTCJul 24, 20:32 UTC1h 30m
2026-07-24 RPA3508 ROC → EWR Jul 24, 14:40 UTCJul 24, 15:40 UTC1h 0m
2026-07-24 RPA3508 ROC → EWR Jul 24, 14:28 UTCJul 24, 15:40 UTC1h 12m
2026-07-24 RPA3626 IAD → LGA Jul 24, 12:20 UTCJul 24, 13:15 UTC55m
2026-07-24 RPA3518 MSN → ORD Jul 24, 00:00 UTCJul 24, 01:20 UTC1h 20m
2026-07-23 RPA3584 DTW → EWR Jul 23, 21:35 UTCJul 23, 23:15 UTC1h 40m
2026-07-23 RPA3705 ORD → LGA Jul 23, 19:25 UTCJul 23, 20:25 UTC1h 0m
2026-07-23 RPA3490 ORF → EWR Jul 23, 17:05 UTCJul 23, 18:15 UTC1h 10m
2026-07-23 RPA3717 - Jul 23, 14:35 UTCJul 23, 15:45 UTC1h 10m
2026-07-22 RPA3415 AVL → EWR Jul 22, 22:28 UTCJul 23, 00:06 UTC1h 38m
2026-07-22 RPA3415 AVL → EWR Jul 22, 22:30 UTCJul 23, 00:10 UTC1h 40m
2026-07-22 RPA3618 MKE → EWR Jul 22, 18:10 UTCJul 22, 19:30 UTC1h 20m
2026-07-22 RPA3588 EWR → PVD Jul 22, 15:05 UTCJul 22, 15:45 UTC40m
2026-07-22 RPA3588 EWR → PVD Jul 22, 14:58 UTCJul 22, 16:41 UTC1h 43m
2026-07-22 RPA3287 EWR → ORD Jul 22, 11:45 UTCJul 22, 12:15 UTC30m
2026-07-21 RPA3420 - Jul 21, 13:10 UTCJul 21, 15:20 UTC2h 10m
2026-07-21 RPA3476 - Jul 21, 01:40 UTCJul 21, 02:35 UTC55m
2026-07-20 RPA3563 - Jul 20, 21:05 UTCJul 20, 22:10 UTC1h 5m
2026-07-20 RPA3574 - Jul 20, 18:25 UTCJul 20, 19:35 UTC1h 10m
2026-07-20 RPA3424 - Jul 20, 16:00 UTCJul 20, 17:10 UTC1h 10m
2026-07-20 RPA3424 CLE → EWR Jul 20, 16:06 UTCJul 20, 17:06 UTC1h 0m
2026-07-20 RPA3503 - Jul 20, 14:00 UTCJul 20, 15:05 UTC1h 5m
2026-07-20 RPA3503 EWR → CLE Jul 20, 12:17 UTCJul 20, 13:39 UTC1h 22m
2026-07-20 RPA3300 - Jul 20, 10:25 UTCJul 20, 11:50 UTC1h 25m
2026-07-20 RPA3606 - Jul 20, 04:15 UTCJul 20, 05:45 UTC1h 30m
2026-07-20 RPA3714 EWR → ROC Jul 20, 00:35 UTCJul 20, 01:55 UTC1h 20m
2026-07-20 RPA3714 EWR → ROC Jul 20, 00:41 UTCJul 20, 01:57 UTC1h 16m
2026-07-19 RPA3589 ROC → EWR Jul 19, 21:50 UTCJul 19, 23:35 UTC1h 45m
2026-07-19 RPA3568 - Jul 19, 18:05 UTCJul 19, 19:50 UTC1h 45m
2026-07-19 RPA3673 - Jul 19, 15:25 UTCJul 19, 16:35 UTC1h 10m
2026-07-19 RPA3409 - Jul 19, 10:30 UTCJul 19, 11:20 UTC50m
2026-07-18 RPA3409 - Jul 18, 13:30 UTCJul 18, 14:55 UTC1h 25m
2026-07-18 RPA3412 - Jul 18, 02:29 UTCJul 18, 03:50 UTC1h 21m
2026-07-17 RPA3527 - Jul 17, 23:20 UTCJul 18, 01:00 UTC1h 40m
2026-07-17 RPA3473 EWR → CVG Jul 17, 17:30 UTCJul 17, 19:05 UTC1h 35m

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 N765YX page for operator, model, and routing details .

Mode-S AA5657 frequently asked

What is Mode-S code AA5657?
AA5657 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N765YX.
Where is Mode-S AA5657 registered?
Mode-S code AA5657 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 AA5657 broadcasting right now?
Yes. Mode-S AA5657 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA5657, octal 52453127, decimal 11,163,223.
What flights does AA5657 operate?
Mode-S AA5657 has broadcast 20 distinct callsigns, including RPA3467, RPA3548, RPA3473, RPA3588, RPA3572.