Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA328F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N756YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AA328F
Octal
52431217
Decimal
11,154,063
Country
US
Tail
N756YX
Type
E75L
Broadcasting now · callsign RPA4094 · 7,875 ft
Flights observed
681
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:55 UTC

Current position

AA328F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA328F 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
RPA3594 Republic Airlines 11 2026-07-22
RPA3691 - 10 2026-07-20
RPA3509 Republic Airlines 10 2026-07-20
RPA3617 Republic Airlines 9 2026-07-20
RPA3578 - 8 2026-06-25
RPA3673 - 7 2026-07-05
RPA3584 - 7 2026-07-04
RPA3567 - 7 2026-07-15
RPA3563 - 7 2026-06-20
RPA3473 Republic Airlines 7 2026-07-26
RPA3447 - 7 2026-07-16
RPA3660 - 6 2026-07-15
RPA3646 - 6 2026-07-03
RPA3635 - 6 2026-06-16
RPA3620 - 6 2026-07-15
RPA3612 - 6 2026-07-06
RPA3607 - 6 2026-06-19
RPA3568 - 6 2026-07-05
RPA3549 Republic Airlines 6 2026-07-22
RPA3535 Republic Airlines 6 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3473 SAV → EWR Jul 26, 17:43 UTCJul 26, 18:57 UTC1h 14m
2026-07-26 RPA3473 SAV → EWR Jul 26, 17:30 UTCJul 26, 17:45 UTC15m
2026-07-26 RPA3648 GSP → EWR Jul 26, 15:05 UTCJul 26, 16:15 UTC1h 10m
2026-07-26 RPA3431 BUF → EWR Jul 26, 12:50 UTCJul 26, 13:50 UTC1h 0m
2026-07-26 RPA3489 EWR → CLT Jul 26, 10:20 UTCJul 26, 11:20 UTC1h 0m
2026-07-26 RPA3521 CLT → ORD Jul 26, 02:45 UTCJul 26, 03:50 UTC1h 5m
2026-07-26 RPA3511 EWR → CVG Jul 26, 00:10 UTCJul 26, 00:50 UTC40m
2026-07-25 RPA3469 DTW → EWR Jul 25, 21:35 UTCJul 25, 23:05 UTC1h 30m
2026-07-25 RPA3702 DFW → ORD Jul 25, 18:00 UTCJul 25, 18:30 UTC30m
2026-07-25 RPA3595 SDF → EWR Jul 25, 14:40 UTCJul 25, 16:15 UTC1h 35m
2026-07-25 RPA3639 EWR → CMH Jul 25, 12:25 UTCJul 25, 13:20 UTC55m
2026-07-25 RPA3697 EWR → CMH Jul 25, 10:15 UTCJul 25, 11:15 UTC1h 0m
2026-07-25 RPA3569 EWR → GSO Jul 25, 02:30 UTCJul 25, 03:40 UTC1h 10m
2026-07-25 RPA3569 EWR → GSO Jul 25, 02:28 UTCJul 25, 03:35 UTC1h 7m
2026-07-24 RPA3678 GSO → EWR Jul 24, 22:15 UTCJul 25, 00:10 UTC1h 55m
2026-07-24 RPA3576 EWR → DTW Jul 24, 17:30 UTCJul 24, 19:45 UTC2h 15m
2026-07-24 RPA3493 PIT → EWR Jul 24, 14:25 UTCJul 24, 15:35 UTC1h 10m
2026-07-24 RPA3493 PIT → EWR Jul 24, 14:32 UTCJul 24, 15:24 UTC52m
2026-07-24 RPA3498 CMH → EWR Jul 24, 12:35 UTCJul 24, 13:20 UTC45m
2026-07-24 RPA3524 EWR → MKE Jul 24, 09:45 UTCJul 24, 10:55 UTC1h 10m
2026-07-24 RPA3692 ITH → EWR Jul 24, 01:15 UTCJul 24, 02:35 UTC1h 20m
2026-07-23 RPA3699 EWR → ATL Jul 23, 21:30 UTCJul 23, 23:35 UTC2h 5m
2026-07-23 RPA3699 EWR → ATL Jul 23, 21:24 UTCJul 23, 23:40 UTC2h 16m
2026-07-23 RPA3650 - Jul 23, 17:50 UTCJul 23, 20:05 UTC2h 15m
2026-07-23 RPA3645 - Jul 23, 15:00 UTCJul 23, 16:30 UTC1h 30m
2026-07-23 RPA3561 ORD → MSY Jul 23, 12:45 UTCJul 23, 14:01 UTC1h 16m
2026-07-23 RPA3561 ORD → MSY Jul 23, 12:40 UTCJul 23, 14:00 UTC1h 20m
2026-07-23 RPA3438 BUF → EWR Jul 23, 10:15 UTCJul 23, 11:20 UTC1h 5m
2026-07-23 RPA3659 GSO → EWR Jul 23, 03:15 UTCJul 23, 04:05 UTC50m
2026-07-22 RPA3549 EWR → CLT Jul 22, 23:25 UTCJul 22, 23:50 UTC25m
2026-07-22 RPA3549 EWR → CLT Jul 22, 21:35 UTCJul 22, 23:35 UTC2h 0m
2026-07-22 RPA3549 EWR → CLT Jul 22, 21:33 UTCJul 22, 23:09 UTC1h 36m
2026-07-22 RPA3715 EWR → YUL Jul 22, 19:00 UTCJul 22, 20:00 UTC1h 0m
2026-07-22 RPA3424 - Jul 22, 16:05 UTCJul 22, 17:05 UTC1h 0m
2026-07-22 RPA3503 EWR → CLE Jul 22, 14:00 UTCJul 22, 15:10 UTC1h 10m
2026-07-22 RPA3594 IAD → EWR Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 RPA3594 IAD → EWR Jul 22, 10:47 UTCJul 22, 12:19 UTC1h 32m
2026-07-21 RPA3421 CLT → EWR Jul 21, 23:40 UTCJul 22, 01:25 UTC1h 45m
2026-07-21 RPA3421 CLT → EWR Jul 21, 23:27 UTCJul 22, 01:27 UTC2h 0m
2026-07-21 RPA3594 IAD → EWR Jul 21, 15:15 UTCJul 21, 15:35 UTC20m
2026-07-21 RPA3594 IAD → EWR Jul 21, 14:37 UTCJul 21, 14:56 UTC19m
2026-07-21 RPA3594 IAD → EWR Jul 21, 14:25 UTCJul 21, 15:35 UTC1h 10m
2026-07-21 RPA3594 IAD → EWR Jul 21, 10:35 UTCJul 21, 13:35 UTC3h 0m
2026-07-21 RPA3512 EWR → AVL Jul 21, 01:35 UTCJul 21, 03:15 UTC1h 40m
2026-07-20 RPA3691 - Jul 20, 23:20 UTCJul 21, 00:20 UTC59m
2026-07-20 RPA3691 YOW → EWR Jul 20, 23:32 UTCJul 21, 00:21 UTC49m
2026-07-20 RPA3509 EWR → BNA Jul 20, 19:35 UTCJul 20, 21:05 UTC1h 30m
2026-07-20 RPA3617 EWR → PVD Jul 20, 14:50 UTCJul 20, 16:00 UTC1h 10m
2026-07-20 RPA3617 EWR → PVD Jul 20, 14:35 UTCJul 20, 15:45 UTC1h 10m
2026-07-20 RPA3553 SAT → EWR Jul 20, 11:55 UTCJul 20, 13:00 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 N756YX page for operator, model, and routing details .

Mode-S AA328F frequently asked

What is Mode-S code AA328F?
AA328F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N756YX.
Where is Mode-S AA328F registered?
Mode-S code AA328F 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 AA328F broadcasting right now?
Yes. Mode-S AA328F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA328F, octal 52431217, decimal 11,154,063.
What flights does AA328F operate?
Mode-S AA328F has broadcast 20 distinct callsigns, including RPA3594, RPA3691, RPA3509, RPA3617, RPA3578.