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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 RPA3561 · 30,000 ft
Flights observed
600
Distinct callsigns
20
Country
US
Last broadcast
8h ago

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 - 8 2026-07-04
RPA3477 - 7 2026-06-23
RPA3404 Republic Airlines 7 2026-05-19
RPA3707 - 6 2026-07-07
RPA3702 Republic Airlines 6 2026-06-09
RPA3594 Republic Airlines 6 2026-06-07
RPA3537 - 6 2026-07-12
RPA3495 Republic Airlines 6 2026-06-03
RPA3442 - 6 2026-06-27
RPA3402 - 6 2026-07-12
RPA3288 Republic Airlines 6 2026-05-28
RPA3636 Republic Airlines 5 2026-05-24
RPA3623 - 5 2026-07-10
RPA3612 - 5 2026-07-04
RPA3573 - 5 2026-06-17
RPA3560 - 5 2026-06-19
RPA3508 - 5 2026-07-12
RPA3507 - 5 2026-07-08
RPA3494 - 5 2026-06-25
RPA3470 - 5 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 RPA3506 - Jul 15, 00:55 UTCJul 15, 01:55 UTC1h 0m
2026-07-14 RPA3710 - Jul 14, 21:05 UTCJul 14, 22:25 UTC1h 20m
2026-07-14 RPA3554 - Jul 14, 18:05 UTCJul 14, 19:00 UTC55m
2026-07-14 RPA3485 - Jul 14, 15:30 UTCJul 14, 16:15 UTC45m
2026-07-14 RPA3485 CVG → ORD Jul 14, 15:37 UTCJul 14, 16:03 UTC26m
2026-07-14 RPA3300 - Jul 14, 13:05 UTCJul 14, 13:50 UTC45m
2026-07-13 RPA4094 EWR → PIT Jul 13, 04:50 UTCJul 13, 05:55 UTC1h 5m
2026-07-12 RPA3456 - Jul 12, 19:25 UTCJul 12, 20:15 UTC50m
2026-07-12 RPA3456 BOS → EWR Jul 12, 19:19 UTCJul 12, 20:18 UTC59m
2026-07-12 RPA3537 EWR → BOS Jul 12, 17:15 UTCJul 12, 17:50 UTC35m
2026-07-12 RPA3508 - Jul 12, 14:35 UTCJul 12, 15:30 UTC55m
2026-07-12 RPA3508 ORF → EWR Jul 12, 14:28 UTCJul 12, 15:36 UTC1h 8m
2026-07-12 RPA3626 EWR → ORF Jul 12, 12:20 UTCJul 12, 13:15 UTC55m
2026-07-12 RPA3402 IAD → IND Jul 12, 01:15 UTCJul 12, 03:00 UTC1h 45m
2026-07-12 RPA3402 ATL → EWR Jul 12, 01:10 UTCJul 12, 03:01 UTC1h 50m
2026-07-11 RPA3456 EWR → ATL Jul 11, 22:01 UTCJul 12, 00:01 UTC2h 0m
2026-07-11 RPA3641 ATL → EWR Jul 11, 17:00 UTCJul 11, 19:05 UTC2h 5m
2026-07-11 RPA3641 ATL → EWR Jul 11, 16:57 UTCJul 11, 19:07 UTC2h 10m
2026-07-11 RPA3669 EWR → ATL Jul 11, 13:35 UTCJul 11, 15:30 UTC1h 55m
2026-07-11 RPA3503 - Jul 11, 10:15 UTCJul 11, 12:05 UTC1h 50m
2026-07-11 RPA3428 - Jul 11, 04:05 UTCJul 11, 05:25 UTC1h 20m
2026-07-11 RPA3654 ORF → EWR Jul 11, 02:00 UTCJul 11, 03:01 UTC1h 0m
2026-07-10 RPA3603 - Jul 10, 20:45 UTCJul 10, 21:40 UTC55m
2026-07-10 RPA3623 - Jul 10, 15:55 UTCJul 10, 17:35 UTC1h 40m
2026-07-10 RPA3623 SDF → EWR Jul 10, 16:01 UTCJul 10, 17:35 UTC1h 34m
2026-07-10 RPA3526 - Jul 10, 12:55 UTCJul 10, 14:15 UTC1h 20m
2026-07-10 RPA3561 - Jul 10, 10:15 UTCJul 10, 11:30 UTC1h 15m
2026-07-10 RPA3308 DTW → CLT Jul 10, 05:50 UTCJul 10, 06:30 UTC40m
2026-07-10 RPA3434 - Jul 10, 02:25 UTCJul 10, 03:30 UTC1h 5m
2026-07-10 RPA3434 EWR → YYZ Jul 10, 02:18 UTCJul 10, 03:22 UTC1h 4m
2026-07-09 RPA3450 - Jul 9, 20:15 UTCJul 9, 22:30 UTC2h 15m
2026-07-09 RPA3450 CLT → EWR Jul 9, 20:13 UTCJul 9, 22:24 UTC2h 11m
2026-07-09 RPA3450 - Jul 9, 16:15 UTCJul 9, 17:35 UTC1h 20m
2026-07-09 RPA3696 - Jul 9, 13:10 UTCJul 9, 14:15 UTC1h 5m
2026-07-08 RPA3598 - Jul 8, 23:25 UTCJul 9, 00:15 UTC50m
2026-07-08 RPA3507 ROC → ORD Jul 8, 15:05 UTCJul 8, 16:25 UTC1h 20m
2026-07-08 RPA3425 - Jul 8, 11:50 UTCJul 8, 13:15 UTC1h 25m
2026-07-07 RPA3707 - Jul 7, 19:10 UTCJul 7, 21:10 UTC2h 0m
2026-07-07 RPA3707 YQB → ORD Jul 7, 19:19 UTCJul 7, 20:57 UTC1h 38m
2026-07-07 RPA3653 - Jul 7, 16:00 UTCJul 7, 18:00 UTC2h 0m
2026-07-07 RPA3661 - Jul 7, 11:20 UTCJul 7, 12:05 UTC45m
2026-07-06 RPA745 EWR → IND Jul 6, 01:20 UTCJul 6, 02:55 UTC1h 35m
2026-07-05 RPA3686 - Jul 5, 19:40 UTCJul 5, 20:40 UTC1h 0m
2026-07-05 RPA3457 - Jul 5, 16:30 UTCJul 5, 18:05 UTC1h 35m
2026-07-05 RPA3544 - Jul 5, 13:30 UTCJul 5, 14:20 UTC50m
2026-07-05 RPA3307 - Jul 5, 01:35 UTCJul 5, 02:30 UTC55m
2026-07-04 RPA3419 - Jul 4, 22:55 UTCJul 4, 23:40 UTC45m
2026-07-04 RPA3663 - Jul 4, 16:00 UTCJul 4, 17:35 UTC1h 35m
2026-07-04 RPA3663 YOW → ORD Jul 4, 15:50 UTCJul 4, 17:22 UTC1h 32m
2026-07-04 RPA3612 - Jul 4, 13:45 UTCJul 4, 14:50 UTC1h 5m

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.