Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA6B43

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N770YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AA6B43
Octal
52465503
Decimal
11,168,579
Country
US
Tail
N770YX
Type
E75L
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
671
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AA6B43.

Country allocation

The ICAO 24-bit address AA6B43 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
RPA3443 - 10 2026-06-30
RPA3715 - 7 2026-07-09
RPA3605 Republic Airlines 7 2026-07-23
RPA3526 - 7 2026-07-02
RPA3502 - 7 2026-07-20
RPA3470 Republic Airlines 7 2026-06-12
RPA3457 - 7 2026-06-27
RPA3678 - 6 2026-06-23
RPA3549 Republic Airlines 6 2026-07-21
RPA3543 Republic Airlines 6 2026-04-24
RPA3490 - 6 2026-06-17
RPA3434 - 6 2026-07-21
RPA3431 - 6 2026-07-07
RPA3705 - 5 2026-06-17
RPA3702 Republic Airlines 5 2026-05-03
RPA3697 - 5 2026-07-12
RPA3657 - 5 2026-07-02
RPA3621 - 5 2026-07-01
RPA3596 - 5 2026-07-03
RPA3578 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3579 CVG → EWR Jul 26, 22:00 UTCJul 26, 22:30 UTC30m
2026-07-26 RPA3413 EWR → CMH Jul 26, 16:57 UTCJul 26, 18:20 UTC1h 23m
2026-07-26 RPA3413 EWR → CMH Jul 26, 17:05 UTCJul 26, 18:20 UTC1h 15m
2026-07-26 RPA3552 EWR → CLE Jul 26, 14:35 UTCJul 26, 15:40 UTC1h 5m
2026-07-25 RPA3491 BUF → EWR Jul 25, 15:55 UTCJul 25, 18:00 UTC2h 5m
2026-07-25 RPA3491 BUF → EWR Jul 25, 15:56 UTCJul 25, 17:56 UTC2h 0m
2026-07-25 RPA3459 CVG → EWR Jul 25, 12:35 UTCJul 25, 14:10 UTC1h 35m
2026-07-25 RPA3656 PHL → EWR Jul 25, 10:10 UTCJul 25, 10:55 UTC45m
2026-07-25 RPA3682 IND → EWR Jul 25, 02:15 UTCJul 25, 03:05 UTC50m
2026-07-25 RPA3449 EWR → RDU Jul 25, 00:05 UTCJul 25, 00:50 UTC45m
2026-07-24 RPA3447 IAD → JAX Jul 24, 22:00 UTCJul 24, 22:55 UTC55m
2026-07-24 RPA3618 MKE → EWR Jul 24, 18:05 UTCJul 24, 19:35 UTC1h 30m
2026-07-24 RPA3588 EWR → PVD Jul 24, 14:50 UTCJul 24, 16:20 UTC1h 30m
2026-07-24 RPA3474 EWR → MYR Jul 24, 11:10 UTCJul 24, 12:25 UTC1h 15m
2026-07-24 RPA3408 DCA → EWR Jul 24, 03:05 UTCJul 24, 04:05 UTC1h 0m
2026-07-23 RPA3460 YYZ → EWR Jul 23, 23:30 UTCJul 24, 00:45 UTC1h 15m
2026-07-23 RPA3531 EWR → CLT Jul 23, 20:35 UTCJul 23, 21:40 UTC1h 5m
2026-07-23 RPA3605 YYZ → EWR Jul 23, 17:19 UTCJul 23, 18:10 UTC51m
2026-07-23 RPA3605 YYZ → EWR Jul 23, 17:15 UTCJul 23, 18:25 UTC1h 10m
2026-07-23 RPA3555 SAV → EWR Jul 23, 14:20 UTCJul 23, 15:35 UTC1h 15m
2026-07-23 RPA3423 CMH → EWR Jul 23, 10:15 UTCJul 23, 11:40 UTC1h 25m
2026-07-22 RPA3532 BNA → EWR Jul 22, 23:55 UTCJul 23, 00:40 UTC45m
2026-07-22 RPA3575 GSP → EWR Jul 22, 20:25 UTCJul 22, 21:40 UTC1h 15m
2026-07-22 RPA3422 EWR → CLT Jul 22, 14:40 UTCJul 22, 15:30 UTC50m
2026-07-22 RPA3422 EWR → CLT Jul 22, 11:30 UTCJul 22, 12:30 UTC1h 0m
2026-07-22 RPA3659 GSO → EWR Jul 22, 03:00 UTCJul 22, 03:45 UTC45m
2026-07-21 RPA3549 EWR → CLT Jul 21, 21:30 UTCJul 22, 00:05 UTC2h 35m
2026-07-21 RPA3549 EWR → CLT Jul 21, 21:21 UTCJul 21, 23:21 UTC2h 0m
2026-07-21 RPA3547 EWR → BOS Jul 21, 17:10 UTCJul 21, 18:30 UTC1h 20m
2026-07-21 RPA3636 YYZ → IAD Jul 21, 14:15 UTCJul 21, 15:10 UTC55m
2026-07-21 RPA3434 EWR → YYZ Jul 21, 01:15 UTCJul 21, 02:20 UTC1h 5m
2026-07-20 RPA3699 EWR → ATL Jul 20, 21:40 UTCJul 20, 23:55 UTC2h 14m
2026-07-20 RPA3650 - Jul 20, 17:50 UTCJul 20, 19:50 UTC2h 0m
2026-07-20 RPA3650 EWR → MEM Jul 20, 17:51 UTCJul 20, 20:00 UTC2h 9m
2026-07-20 RPA3591 - Jul 20, 15:50 UTCJul 20, 16:55 UTC1h 5m
2026-07-20 RPA3591 BTV → EWR Jul 20, 15:19 UTCJul 20, 16:52 UTC1h 33m
2026-07-20 RPA3505 - Jul 20, 12:50 UTCJul 20, 14:00 UTC1h 10m
2026-07-20 RPA3693 IAD → BTV Jul 20, 10:15 UTCJul 20, 10:55 UTC40m
2026-07-20 RPA3502 IAD → PHL Jul 20, 03:45 UTCJul 20, 04:15 UTC30m
2026-07-20 RPA3502 IAD → PHL Jul 20, 03:38 UTCJul 20, 04:21 UTC43m
2026-07-19 RPA3311 CVG → CMH Jul 19, 22:05 UTCJul 19, 23:45 UTC1h 40m
2026-07-19 RPA3311 CVG → CMH Jul 19, 20:03 UTCJul 19, 23:33 UTC3h 30m
2026-07-19 RPA3535 - Jul 19, 17:30 UTCJul 19, 18:35 UTC1h 5m
2026-07-19 RPA3500 EWR → MKE Jul 19, 14:55 UTCJul 19, 16:00 UTC1h 5m
2026-07-19 RPA3672 - Jul 19, 12:10 UTCJul 19, 13:35 UTC1h 25m
2026-07-18 RPA3712 ORF → EWR Jul 18, 14:05 UTCJul 18, 15:10 UTC1h 5m
2026-07-18 RPA3439 - Jul 18, 00:39 UTCJul 18, 01:30 UTC50m
2026-07-17 RPA3580 ROC → EWR Jul 17, 21:00 UTCJul 17, 21:55 UTC55m
2026-07-17 RPA3629 ORD → ROC Jul 17, 17:25 UTCJul 17, 18:40 UTC1h 15m
2026-07-17 RPA3629 ORD → ROC Jul 17, 17:23 UTCJul 17, 18:36 UTC1h 13m

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 N770YX page for operator, model, and routing details .

Mode-S AA6B43 frequently asked

What is Mode-S code AA6B43?
AA6B43 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N770YX.
Where is Mode-S AA6B43 registered?
Mode-S code AA6B43 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 AA6B43 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA6B43, octal 52465503, decimal 11,168,579.
What flights does AA6B43 operate?
Mode-S AA6B43 has broadcast 20 distinct callsigns, including RPA3443, RPA3715, RPA3605, RPA3526, RPA3502.