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sensors Mode-S transponder

AAA90C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N786YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AAA90C
Octal
52524414
Decimal
11,184,396
Country
US
Tail
N786YX
Type
E75L
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
639
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S AAA90C.

Country allocation

The ICAO 24-bit address AAA90C 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
RPA3707 - 11 2026-07-17
RPA3551 Republic Airlines 8 2026-06-08
RPA3619 - 7 2026-06-13
RPA3585 Republic Airlines 7 2026-05-05
RPA3484 - 7 2026-07-13
RPA3461 - 7 2026-07-03
RPA3672 Republic Airlines 6 2026-07-26
RPA3665 - 6 2026-07-23
RPA3661 - 6 2026-07-12
RPA3653 - 6 2026-07-17
RPA3640 - 6 2026-07-19
RPA3639 - 6 2026-06-23
RPA3627 - 6 2026-06-23
RPA3626 - 6 2026-07-20
RPA3608 - 6 2026-07-05
RPA3572 Republic Airlines 6 2026-05-14
RPA3526 Republic Airlines 6 2026-05-28
RPA3498 - 6 2026-07-10
RPA3686 - 5 2026-06-29
RPA3678 Republic Airlines 5 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3620 ORF → EWR Jul 26, 20:00 UTCJul 26, 21:00 UTC1h 0m
2026-07-26 RPA3620 ORF → EWR Jul 26, 19:34 UTCJul 26, 20:53 UTC1h 19m
2026-07-26 RPA3535 EWR → JAX Jul 26, 17:15 UTCJul 26, 18:20 UTC1h 5m
2026-07-26 RPA3500 EWR → MKE Jul 26, 14:25 UTCJul 26, 15:25 UTC1h 0m
2026-07-26 RPA3672 RDU → EWR Jul 26, 11:40 UTCJul 26, 13:00 UTC1h 20m
2026-07-25 RPA3537 EWR → BUF Jul 25, 23:50 UTCJul 26, 02:50 UTC3h 0m
2026-07-25 RPA3437 BUF → EWR Jul 25, 17:20 UTCJul 25, 20:20 UTC3h 0m
2026-07-23 RPA3665 EWR → EWR Jul 23, 12:05 UTCJul 23, 12:45 UTC40m
2026-07-23 RPA3655 EWR → SDF Jul 23, 00:30 UTCJul 23, 01:35 UTC1h 5m
2026-07-22 RPA3651 EWR → CVG Jul 22, 22:30 UTCJul 22, 23:35 UTC1h 5m
2026-07-22 RPA3637 ROC → EWR Jul 22, 18:50 UTCJul 22, 19:55 UTC1h 5m
2026-07-22 RPA3637 ROC → EWR Jul 22, 18:45 UTCJul 22, 19:49 UTC1h 4m
2026-07-22 RPA3400 EWR → TVC Jul 22, 16:20 UTCJul 22, 17:25 UTC1h 5m
2026-07-22 RPA3451 MKE → EWR Jul 22, 13:15 UTCJul 22, 14:40 UTC1h 25m
2026-07-22 RPA3451 MKE → EWR Jul 22, 13:24 UTCJul 22, 14:52 UTC1h 28m
2026-07-22 RPA3683 DCA → EWR Jul 22, 11:10 UTCJul 22, 12:10 UTC1h 0m
2026-07-21 RPA3642 - Jul 21, 11:10 UTCJul 21, 13:20 UTC2h 10m
2026-07-21 RPA3642 MEM → EWR Jul 21, 11:18 UTCJul 21, 13:24 UTC2h 6m
2026-07-21 RPA3563 - Jul 21, 01:55 UTCJul 21, 04:10 UTC2h 15m
2026-07-20 RPA3710 - Jul 20, 21:05 UTCJul 20, 22:20 UTC1h 15m
2026-07-20 RPA3492 EWR → CMH Jul 20, 18:20 UTCJul 20, 19:30 UTC1h 10m
2026-07-20 RPA3508 - Jul 20, 16:30 UTCJul 20, 16:35 UTC5m
2026-07-20 RPA3508 - Jul 20, 15:20 UTCJul 20, 16:35 UTC1h 15m
2026-07-20 RPA3508 ORF → EWR Jul 20, 15:21 UTCJul 20, 16:14 UTC53m
2026-07-20 RPA3626 EWR → ORF Jul 20, 12:56 UTCJul 20, 13:51 UTC55m
2026-07-20 RPA3626 EWR → ORF Jul 20, 13:00 UTCJul 20, 13:55 UTC55m
2026-07-20 RPA3718 - Jul 20, 10:20 UTCJul 20, 11:45 UTC1h 25m
2026-07-19 RPA3309 - Jul 19, 20:25 UTCJul 19, 21:10 UTC45m
2026-07-19 RPA3702 - Jul 19, 18:30 UTCJul 19, 19:00 UTC30m
2026-07-19 RPA3702 ORD → IND Jul 19, 18:31 UTCJul 19, 19:01 UTC30m
2026-07-19 RPA3406 - Jul 19, 13:50 UTCJul 19, 16:20 UTC2h 30m
2026-07-19 RPA3640 ORD → ABQ Jul 19, 03:45 UTCJul 19, 06:10 UTC2h 25m
2026-07-18 RPA3499 EWR → AVL Jul 18, 22:00 UTCJul 19, 01:00 UTC3h 0m
2026-07-18 RPA3499 EWR → AVL Jul 18, 21:38 UTCJul 19, 00:43 UTC3h 5m
2026-07-18 RPA3690 - Jul 18, 17:15 UTCJul 18, 19:55 UTC2h 40m
2026-07-18 RPA3497 CHS → EWR Jul 18, 14:40 UTCJul 18, 15:30 UTC50m
2026-07-18 RPA3521 IAD → CVG Jul 18, 12:35 UTCJul 18, 13:40 UTC1h 5m
2026-07-18 RPA3445 IND → IAD Jul 18, 01:25 UTCJul 18, 02:40 UTC1h 15m
2026-07-18 RPA3445 IND → IAD Jul 18, 01:28 UTCJul 18, 02:32 UTC1h 4m
2026-07-18 RPA3418 - Jul 18, 00:10 UTCJul 18, 00:45 UTC35m
2026-07-18 RPA3418 ORD → IND Jul 18, 00:08 UTCJul 18, 00:54 UTC46m
2026-07-17 RPA3707 YQB → ORD Jul 17, 19:40 UTCJul 17, 22:00 UTC2h 20m
2026-07-17 RPA3653 - Jul 17, 16:19 UTCJul 17, 18:15 UTC1h 55m
2026-07-17 RPA3653 ORD → YQB Jul 17, 16:08 UTCJul 17, 18:14 UTC2h 6m
2026-07-17 RPA3696 EWR → CLT Jul 17, 13:15 UTCJul 17, 14:15 UTC1h 0m
2026-07-17 RPA3512 EWR → SDF Jul 17, 01:05 UTCJul 17, 02:39 UTC1h 35m
2026-07-16 RPA3691 - Jul 16, 22:05 UTCJul 16, 23:05 UTC1h 0m
2026-07-16 RPA3452 - Jul 16, 20:05 UTCJul 16, 21:10 UTC1h 5m
2026-07-16 RPA3424 - Jul 16, 16:05 UTCJul 16, 17:10 UTC1h 5m
2026-07-16 RPA3503 EWR → CLE Jul 16, 13:54 UTCJul 16, 15:05 UTC1h 10m

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 N786YX page for operator, model, and routing details .

Mode-S AAA90C frequently asked

What is Mode-S code AAA90C?
AAA90C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N786YX.
Where is Mode-S AAA90C registered?
Mode-S code AAA90C 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 AAA90C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA90C, octal 52524414, decimal 11,184,396.
What flights does AAA90C operate?
Mode-S AAA90C has broadcast 20 distinct callsigns, including RPA3707, RPA3551, RPA3619, RPA3585, RPA3484.