Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AAC1AF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N792YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
AAC1AF
Octal
52540657
Decimal
11,190,703
Country
US
Tail
N792YX
Type
E75L
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
684
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S AAC1AF.

Country allocation

The ICAO 24-bit address AAC1AF 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
RPA3550 - 10 2026-07-10
RPA3709 Republic Airlines 9 2026-07-19
RPA3623 Republic Airlines 9 2026-07-26
RPA3537 - 9 2026-07-02
RPA3706 - 7 2026-06-15
RPA3579 - 7 2026-06-15
RPA3561 Republic Airlines 7 2026-07-26
RPA3479 - 7 2026-07-10
RPA3450 Republic Airlines 7 2026-07-24
RPA3707 - 6 2026-07-20
RPA3683 Republic Airlines 6 2026-07-25
RPA3660 Republic Airlines 6 2026-07-20
RPA3543 - 6 2026-07-13
RPA3486 - 6 2026-07-17
RPA3438 - 6 2026-07-16
RPA3427 - 6 2026-07-19
RPA3666 - 5 2026-07-16
RPA3645 - 5 2026-07-16
RPA3644 Republic Airlines 5 2026-06-15
RPA3642 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3610 CHS → EWR Jul 26, 19:10 UTCJul 26, 20:05 UTC55m
2026-07-26 RPA3623 EWR → ITH Jul 26, 15:25 UTCJul 26, 17:15 UTC1h 50m
2026-07-26 RPA3623 EWR → ITH Jul 26, 15:31 UTCJul 26, 17:10 UTC1h 39m
2026-07-26 RPA3526 EWR → BUF Jul 26, 12:52 UTCJul 26, 13:55 UTC1h 3m
2026-07-26 RPA3526 EWR → BUF Jul 26, 12:45 UTCJul 26, 14:00 UTC1h 15m
2026-07-26 RPA3561 ORD → MSY Jul 26, 10:10 UTCJul 26, 11:25 UTC1h 15m
2026-07-26 RPA3506 EWR → GSP Jul 26, 02:10 UTCJul 26, 03:10 UTC1h 0m
2026-07-26 RPA3616 EWR → IND Jul 26, 01:05 UTCJul 26, 01:10 UTC5m
2026-07-25 RPA3616 EWR → IND Jul 25, 23:05 UTCJul 26, 01:10 UTC2h 5m
2026-07-25 RPA3616 EWR → IND Jul 25, 22:24 UTCJul 26, 00:47 UTC2h 23m
2026-07-25 RPA3448 EWR → EYW Jul 25, 17:30 UTCJul 25, 19:20 UTC1h 50m
2026-07-25 RPA3451 MKE → EWR Jul 25, 13:15 UTCJul 25, 14:50 UTC1h 35m
2026-07-25 RPA3683 DCA → EWR Jul 25, 10:35 UTCJul 25, 12:10 UTC1h 35m
2026-07-24 RPA3450 DCA → EWR Jul 24, 18:50 UTCJul 24, 20:10 UTC1h 20m
2026-07-24 RPA3450 DCA → EWR Jul 24, 15:55 UTCJul 24, 17:20 UTC1h 25m
2026-07-24 RPA3600 PHL → EWR Jul 24, 10:20 UTCJul 24, 12:15 UTC1h 55m
2026-07-23 RPA3670 EWR → GSP Jul 23, 23:35 UTCJul 24, 01:31 UTC1h 56m
2026-07-23 RPA3575 GSP → EWR Jul 23, 20:35 UTCJul 23, 21:35 UTC1h 0m
2026-07-23 RPA3422 EWR → CLT Jul 23, 15:00 UTCJul 23, 15:50 UTC50m
2026-07-23 RPA3422 EWR → CLT Jul 23, 11:30 UTCJul 23, 12:35 UTC1h 5m
2026-07-23 RPA3422 EWR → CLT Jul 23, 11:34 UTCJul 23, 12:37 UTC1h 3m
2026-07-23 RPA3512 EWR → AVL Jul 23, 01:20 UTCJul 23, 03:00 UTC1h 40m
2026-07-22 RPA3563 MSY → EWR Jul 22, 21:00 UTCJul 22, 22:15 UTC1h 15m
2026-07-22 RPA3574 - Jul 22, 18:25 UTCJul 22, 19:35 UTC1h 10m
2026-07-22 RPA3591 SDF → EWR Jul 22, 15:15 UTCJul 22, 16:15 UTC1h 0m
2026-07-22 RPA3505 EWR → BGR Jul 22, 12:56 UTCJul 22, 13:58 UTC1h 2m
2026-07-22 RPA3505 EWR → BGR Jul 22, 12:55 UTCJul 22, 13:55 UTC1h 0m
2026-07-22 RPA3561 ORD → MSY Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-21 RPA3509 EWR → BNA Jul 21, 19:30 UTCJul 21, 21:05 UTC1h 35m
2026-07-21 RPA3406 - Jul 21, 13:50 UTCJul 21, 16:20 UTC2h 30m
2026-07-21 RPA3640 - Jul 21, 01:30 UTCJul 21, 04:00 UTC2h 30m
2026-07-20 RPA3707 - Jul 20, 19:45 UTCJul 20, 21:50 UTC2h 5m
2026-07-20 RPA3707 RDU → EWR Jul 20, 19:49 UTCJul 20, 21:37 UTC1h 48m
2026-07-20 RPA3653 - Jul 20, 16:10 UTCJul 20, 18:10 UTC2h 0m
2026-07-20 RPA3661 - Jul 20, 11:25 UTCJul 20, 11:45 UTC20m
2026-07-20 RPA3661 IND → ORD Jul 20, 11:23 UTCJul 20, 12:01 UTC38m
2026-07-20 RPA3660 RDU → EWR Jul 20, 03:50 UTCJul 20, 04:25 UTC35m
2026-07-20 RPA3444 - Jul 20, 00:30 UTCJul 20, 01:30 UTC1h 0m
2026-07-19 RPA3570 - Jul 19, 22:05 UTCJul 19, 22:50 UTC45m
2026-07-19 RPA3427 - Jul 19, 19:50 UTCJul 19, 20:35 UTC45m
2026-07-19 RPA3402 IAD → IND Jul 19, 17:20 UTCJul 19, 18:40 UTC1h 20m
2026-07-19 RPA3709 IND → EWR Jul 19, 14:30 UTCJul 19, 15:40 UTC1h 10m
2026-07-18 RPA3705 EWR → IND Jul 18, 00:45 UTCJul 18, 02:29 UTC1h 45m
2026-07-17 RPA3563 - Jul 17, 21:20 UTCJul 17, 22:40 UTC1h 20m
2026-07-17 RPA3574 - Jul 17, 18:40 UTCJul 17, 19:55 UTC1h 15m
2026-07-17 RPA3557 - Jul 17, 16:19 UTCJul 17, 17:55 UTC1h 35m
2026-07-17 RPA3486 EWR → GRR Jul 17, 13:30 UTCJul 17, 14:57 UTC1h 27m
2026-07-17 RPA3486 EWR → GRR Jul 17, 13:20 UTCJul 17, 14:55 UTC1h 35m
2026-07-17 RPA3423 - Jul 17, 10:15 UTCJul 17, 11:45 UTC1h 30m
2026-07-17 RPA3423 CVG → EWR Jul 17, 10:22 UTCJul 17, 11:44 UTC1h 22m

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 N792YX page for operator, model, and routing details .

Mode-S AAC1AF frequently asked

What is Mode-S code AAC1AF?
AAC1AF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N792YX.
Where is Mode-S AAC1AF registered?
Mode-S code AAC1AF 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 AAC1AF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAC1AF, octal 52540657, decimal 11,190,703.
What flights does AAC1AF operate?
Mode-S AAC1AF has broadcast 20 distinct callsigns, including RPA3550, RPA3709, RPA3623, RPA3537, RPA3706.