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sensors Mode-S transponder

AA52A0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N764YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AA52A0
Octal
52451240
Decimal
11,162,272
Country
US
Tail
N764YX
Type
E75L
Broadcasting now · callsign RPA3636 · 27,000 ft
Flights observed
698
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Current position

AA52A0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA52A0 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
RPA3539 - 9 2026-07-01
RPA3515 Republic Airlines 9 2026-07-24
RPA3669 - 8 2026-06-23
RPA3609 - 8 2026-07-04
RPA3596 Republic Airlines 8 2026-07-25
RPA3553 Republic Airlines 8 2026-07-26
RPA3639 - 7 2026-07-18
RPA3638 Republic Airlines 7 2026-07-25
RPA3604 Republic Airlines 7 2026-06-02
RPA3484 Republic Airlines 7 2026-06-17
RPA3478 Republic Airlines 7 2026-07-20
RPA3662 Republic Airlines 6 2026-07-26
RPA3655 Republic Airlines 6 2026-07-18
RPA3649 Republic Airlines 6 2026-06-06
RPA3636 Republic Airlines 6 2026-07-24
RPA3608 - 6 2026-07-23
RPA3581 Republic Airlines 6 2026-05-07
RPA3523 - 6 2026-06-22
RPA3439 - 6 2026-07-23
RPA3438 - 6 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3662 GSP → EWR Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-26 RPA3432 BUF → EWR Jul 26, 18:05 UTCJul 26, 19:15 UTC1h 10m
2026-07-26 RPA3617 EWR → PVD Jul 26, 14:35 UTCJul 26, 15:55 UTC1h 20m
2026-07-26 RPA3553 SAT → EWR Jul 26, 11:55 UTCJul 26, 12:52 UTC57m
2026-07-26 RPA3553 SAT → EWR Jul 26, 11:45 UTCJul 26, 12:55 UTC1h 10m
2026-07-26 RPA3571 EWR → DTW Jul 26, 01:20 UTCJul 26, 02:50 UTC1h 30m
2026-07-25 RPA3443 EWR → DCA Jul 25, 20:15 UTCJul 25, 21:50 UTC1h 35m
2026-07-25 RPA3596 EWR → PIT Jul 25, 17:50 UTCJul 25, 19:05 UTC1h 15m
2026-07-25 RPA3638 JAX → EWR Jul 25, 14:56 UTCJul 25, 16:06 UTC1h 10m
2026-07-25 RPA3638 JAX → EWR Jul 25, 14:55 UTCJul 25, 16:05 UTC1h 10m
2026-07-25 RPA3685 YYZ → EWR Jul 25, 11:40 UTCJul 25, 13:10 UTC1h 30m
2026-07-24 RPA3532 BNA → EWR Jul 24, 23:35 UTCJul 25, 00:20 UTC45m
2026-07-24 RPA3426 EYW → EWR Jul 24, 19:35 UTCJul 24, 21:30 UTC1h 55m
2026-07-24 RPA3487 YYZ → EWR Jul 24, 16:45 UTCJul 24, 17:55 UTC1h 10m
2026-07-24 RPA3636 GSP → EWR Jul 24, 14:00 UTCJul 24, 15:00 UTC1h 0m
2026-07-24 RPA3515 PVD → EWR Jul 24, 02:32 UTCJul 24, 03:27 UTC55m
2026-07-24 RPA3515 PVD → EWR Jul 24, 02:30 UTCJul 24, 03:30 UTC1h 0m
2026-07-23 RPA3628 SDF → EWR Jul 23, 23:00 UTCJul 24, 01:00 UTC2h 0m
2026-07-23 RPA3436 CLT → EWR Jul 23, 19:00 UTCJul 23, 21:35 UTC2h 35m
2026-07-23 RPA3675 - Jul 23, 16:05 UTCJul 23, 17:50 UTC1h 45m
2026-07-23 RPA3608 EWR → MSN Jul 23, 12:59 UTCJul 23, 15:05 UTC2h 6m
2026-07-23 RPA3608 EWR → MSN Jul 23, 13:05 UTCJul 23, 15:10 UTC2h 5m
2026-07-23 RPA3712 - Jul 23, 10:15 UTCJul 23, 11:05 UTC50m
2026-07-23 RPA3439 - Jul 23, 00:20 UTCJul 23, 01:35 UTC1h 15m
2026-07-23 RPA3439 EWR → ORF Jul 23, 00:27 UTCJul 23, 01:21 UTC54m
2026-07-22 RPA3710 - Jul 22, 21:25 UTCJul 22, 22:40 UTC1h 15m
2026-07-22 RPA3492 EWR → CMH Jul 22, 19:00 UTCJul 22, 20:20 UTC1h 20m
2026-07-22 RPA3701 GSP → EWR Jul 22, 16:30 UTCJul 22, 17:55 UTC1h 25m
2026-07-22 RPA3423 CMH → EWR Jul 22, 13:55 UTCJul 22, 14:55 UTC1h 0m
2026-07-21 RPA3294 IAD → RDU Jul 21, 20:00 UTCJul 21, 20:45 UTC45m
2026-07-21 RPA3294 IAD → RDU Jul 21, 19:48 UTCJul 21, 20:39 UTC51m
2026-07-21 RPA3638 JAX → EWR Jul 21, 15:45 UTCJul 21, 17:25 UTC1h 40m
2026-07-21 RPA3706 - Jul 21, 11:45 UTCJul 21, 13:05 UTC1h 20m
2026-07-21 RPA3592 BNA → EWR Jul 21, 02:35 UTCJul 21, 03:40 UTC1h 5m
2026-07-20 RPA3644 EWR → PHL Jul 20, 23:15 UTCJul 21, 00:30 UTC1h 14m
2026-07-20 RPA3596 EWR → PIT Jul 20, 20:35 UTCJul 20, 21:55 UTC1h 20m
2026-07-20 RPA3478 EWR → ILM Jul 20, 17:15 UTCJul 20, 18:50 UTC1h 35m
2026-07-19 RPA3455 CMH → EWR Jul 19, 23:45 UTCJul 20, 00:20 UTC35m
2026-07-19 RPA3455 CMH → EWR Jul 19, 23:28 UTCJul 20, 00:18 UTC50m
2026-07-19 RPA3440 - Jul 19, 21:45 UTCJul 19, 21:55 UTC10m
2026-07-19 RPA3440 BNA → ORD Jul 19, 20:30 UTCJul 19, 21:55 UTC1h 25m
2026-07-19 RPA3440 BNA → ORD Jul 19, 20:17 UTCJul 19, 21:30 UTC1h 13m
2026-07-19 RPA3634 ORD → BNA Jul 19, 18:00 UTCJul 19, 18:54 UTC54m
2026-07-19 RPA3634 ORD → BNA Jul 19, 17:50 UTCJul 19, 18:55 UTC1h 5m
2026-07-19 RPA3507 ROC → ORD Jul 19, 14:55 UTCJul 19, 16:35 UTC1h 40m
2026-07-19 RPA3425 - Jul 19, 12:30 UTCJul 19, 13:40 UTC1h 10m
2026-07-19 RPA3524 - Jul 19, 10:35 UTCJul 19, 10:45 UTC10m
2026-07-19 RPA3524 CMH → ORD Jul 19, 09:40 UTCJul 19, 10:45 UTC1h 5m
2026-07-19 RPA3524 CMH → ORD Jul 19, 09:48 UTCJul 19, 10:19 UTC31m
2026-07-19 RPA3614 - Jul 19, 02:35 UTCJul 19, 03:20 UTC45m

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 N764YX page for operator, model, and routing details .

Mode-S AA52A0 frequently asked

What is Mode-S code AA52A0?
AA52A0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N764YX.
Where is Mode-S AA52A0 registered?
Mode-S code AA52A0 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 AA52A0 broadcasting right now?
Yes. Mode-S AA52A0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA52A0, octal 52451240, decimal 11,162,272.
What flights does AA52A0 operate?
Mode-S AA52A0 has broadcast 20 distinct callsigns, including RPA3539, RPA3515, RPA3669, RPA3609, RPA3596.