Apparatus

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sensors Mode-S transponder

AA0759

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N745YX · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AA0759
Octal
52403531
Decimal
11,143,001
Country
US
Tail
N745YX
Type
E75L
Broadcasting now · callsign RPA3631 · 4,575 ft
Flights observed
678
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Current position

AA0759 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA0759 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
RPA3663 Republic Airlines 9 2026-07-21
RPA3477 - 7 2026-06-23
RPA3404 Republic Airlines 7 2026-05-19
RPA3707 - 6 2026-07-07
RPA3702 Republic Airlines 6 2026-06-09
RPA3642 - 6 2026-07-20
RPA3612 - 6 2026-07-21
RPA3597 Republic Airlines 6 2026-07-21
RPA3594 Republic Airlines 6 2026-06-07
RPA3537 - 6 2026-07-12
RPA3495 Republic Airlines 6 2026-06-03
RPA3494 - 6 2026-07-17
RPA3442 - 6 2026-06-27
RPA3402 - 6 2026-07-12
RPA3288 Republic Airlines 6 2026-05-28
RPA3716 - 5 2026-07-16
RPA3658 Republic Airlines 5 2026-07-21
RPA3636 Republic Airlines 5 2026-05-24
RPA3623 - 5 2026-07-10
RPA3591 Republic Airlines 5 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3599 DFW → EWR Jul 26, 21:20 UTCJul 26, 22:05 UTC45m
2026-07-26 RPA3447 IAD → JAX Jul 26, 17:50 UTCJul 26, 19:25 UTC1h 35m
2026-07-26 RPA3447 IAD → JAX Jul 26, 18:03 UTCJul 26, 19:18 UTC1h 15m
2026-07-26 RPA3676 CLT → EWR Jul 26, 14:45 UTCJul 26, 16:25 UTC1h 40m
2026-07-26 RPA3718 EWR → MSP Jul 26, 10:20 UTCJul 26, 11:40 UTC1h 20m
2026-07-25 RPA3580 SDF → EWR Jul 25, 23:50 UTCJul 26, 01:15 UTC1h 25m
2026-07-25 RPA3580 SDF → EWR Jul 25, 21:30 UTCJul 25, 22:20 UTC50m
2026-07-25 RPA3629 SDF → EWR Jul 25, 17:15 UTCJul 25, 18:30 UTC1h 15m
2026-07-25 RPA3534 EWR → ROC Jul 25, 14:50 UTCJul 25, 15:30 UTC40m
2026-07-25 RPA3660 RDU → EWR Jul 25, 02:55 UTCJul 25, 03:25 UTC30m
2026-07-24 RPA3549 EWR → CLT Jul 24, 21:21 UTCJul 24, 22:42 UTC1h 21m
2026-07-24 RPA3549 EWR → CLT Jul 24, 21:10 UTCJul 24, 23:00 UTC1h 50m
2026-07-24 RPA3715 EWR → YUL Jul 24, 18:45 UTCJul 24, 19:45 UTC1h 0m
2026-07-24 RPA3715 EWR → YUL Jul 24, 14:55 UTCJul 24, 15:55 UTC1h 0m
2026-07-24 RPA3529 GSO → EWR Jul 24, 12:45 UTCJul 24, 13:35 UTC50m
2026-07-24 RPA3420 EWR → CMH Jul 24, 10:10 UTCJul 24, 11:00 UTC50m
2026-07-24 RPA3476 EYW → EWR Jul 24, 01:30 UTCJul 24, 02:20 UTC50m
2026-07-23 RPA3468 CVG → EWR Jul 23, 23:00 UTCJul 24, 00:20 UTC1h 20m
2026-07-23 RPA3533 GSP → EWR Jul 23, 19:26 UTCJul 23, 21:02 UTC1h 36m
2026-07-23 RPA3533 GSP → EWR Jul 23, 19:35 UTCJul 23, 21:05 UTC1h 30m
2026-07-23 RPA3684 PIT → EWR Jul 23, 15:30 UTCJul 23, 17:45 UTC2h 15m
2026-07-23 RPA3604 EWR → PHL Jul 23, 13:00 UTCJul 23, 14:30 UTC1h 30m
2026-07-23 RPA3652 CVG → EWR Jul 23, 10:40 UTCJul 23, 11:45 UTC1h 5m
2026-07-23 RPA3412 BGR → EWR Jul 23, 01:40 UTCJul 23, 03:05 UTC1h 25m
2026-07-23 RPA3412 BGR → EWR Jul 23, 01:48 UTCJul 23, 02:54 UTC1h 6m
2026-07-22 RPA3578 BNA → EWR Jul 22, 22:35 UTCJul 22, 23:35 UTC1h 0m
2026-07-22 RPA3591 SDF → EWR Jul 22, 20:20 UTCJul 22, 21:20 UTC1h 0m
2026-07-22 RPA3443 EWR → DCA Jul 22, 17:40 UTCJul 22, 18:50 UTC1h 10m
2026-07-22 RPA3631 IAD → CMH Jul 22, 14:20 UTCJul 22, 15:35 UTC1h 15m
2026-07-22 RPA3673 IAD → BTV Jul 22, 11:40 UTCJul 22, 12:25 UTC45m
2026-07-22 RPA3464 BUF → EWR Jul 22, 02:50 UTCJul 22, 03:45 UTC55m
2026-07-21 RPA3597 SRQ → EWR Jul 21, 22:45 UTCJul 22, 01:25 UTC2h 40m
2026-07-21 RPA3658 GRR → EWR Jul 21, 19:45 UTCJul 21, 21:35 UTC1h 50m
2026-07-21 RPA3663 EWR → ROC Jul 21, 14:50 UTCJul 21, 16:30 UTC1h 40m
2026-07-21 RPA3612 IAD → YOW Jul 21, 12:39 UTCJul 21, 13:31 UTC52m
2026-07-21 RPA3679 BNA → EWR Jul 21, 10:20 UTCJul 21, 11:00 UTC40m
2026-07-21 RPA3540 IAD → PIT Jul 21, 03:10 UTCJul 21, 03:45 UTC35m
2026-07-20 RPA3582 - Jul 20, 23:25 UTCJul 21, 00:45 UTC1h 19m
2026-07-20 RPA3599 DFW → EWR Jul 20, 21:30 UTCJul 20, 22:25 UTC55m
2026-07-20 RPA3596 EWR → PIT Jul 20, 17:40 UTCJul 20, 19:00 UTC1h 20m
2026-07-20 RPA3638 JAX → EWR Jul 20, 15:00 UTCJul 20, 16:10 UTC1h 10m
2026-07-20 RPA3642 - Jul 20, 11:10 UTCJul 20, 13:15 UTC2h 5m
2026-07-19 RPA3650 - Jul 19, 17:45 UTCJul 19, 20:00 UTC2h 15m
2026-07-19 RPA3591 - Jul 19, 15:20 UTCJul 19, 16:15 UTC55m
2026-07-19 RPA3505 IAD → BTV Jul 19, 13:10 UTCJul 19, 14:20 UTC1h 10m
2026-07-19 RPA3505 IAD → BTV Jul 19, 13:11 UTCJul 19, 14:22 UTC1h 11m
2026-07-19 RPA3668 EWR → ATL Jul 19, 10:25 UTCJul 19, 11:10 UTC45m
2026-07-19 RPA3668 EWR → ATL Jul 19, 10:34 UTCJul 19, 11:15 UTC41m
2026-07-18 RPA3326 SYR → HHH Jul 18, 23:00 UTCJul 19, 00:10 UTC1h 10m
2026-07-18 RPA3308 DTW → CLT Jul 18, 19:05 UTCJul 18, 20:20 UTC1h 15m

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 N745YX page for operator, model, and routing details .

Mode-S AA0759 frequently asked

What is Mode-S code AA0759?
AA0759 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N745YX.
Where is Mode-S AA0759 registered?
Mode-S code AA0759 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 AA0759 broadcasting right now?
Yes. Mode-S AA0759 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA0759, octal 52403531, decimal 11,143,001.
What flights does AA0759 operate?
Mode-S AA0759 has broadcast 20 distinct callsigns, including RPA3663, RPA3477, RPA3404, RPA3707, RPA3702.