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sensors Mode-S transponder

AABDF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N791YX · operated by REPUBLIC AIRWAYS INC

Hex
AABDF8
Octal
52536770
Decimal
11,189,752
Country
US
Tail
N791YX
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
695
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S AABDF8.

Country allocation

The ICAO 24-bit address AABDF8 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
RPA3625 - 8 2026-06-20
RPA3601 Republic Airlines 8 2026-07-25
RPA3562 Republic Airlines 8 2026-07-20
RPA3538 - 8 2026-07-15
RPA3481 Republic Airlines 8 2026-07-22
RPA3648 Republic Airlines 7 2026-06-20
RPA3443 Republic Airlines 7 2026-06-10
RPA3440 Republic Airlines 7 2026-07-21
RPA3417 - 7 2026-07-13
RPA3708 - 6 2026-06-24
RPA3703 Republic Airlines 6 2026-05-27
RPA3698 - 6 2026-07-17
RPA3628 - 6 2026-06-28
RPA3604 - 6 2026-07-09
RPA3553 Republic Airlines 6 2026-07-21
RPA3515 Republic Airlines 6 2026-07-18
RPA3510 - 6 2026-07-21
RPA3478 - 6 2026-07-09
RPA3457 Republic Airlines 6 2026-06-04
RPA3453 - 6 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3580 SDF → EWR Jul 26, 20:20 UTCJul 26, 21:05 UTC45m
2026-07-26 RPA3629 SDF → EWR Jul 26, 17:10 UTCJul 26, 18:25 UTC1h 15m
2026-07-26 RPA3534 EWR → ROC Jul 26, 14:50 UTCJul 26, 15:35 UTC45m
2026-07-26 RPA3660 RDU → EWR Jul 26, 02:55 UTCJul 26, 03:30 UTC35m
2026-07-26 RPA3657 SAV → EWR Jul 26, 00:25 UTCJul 26, 01:05 UTC40m
2026-07-25 RPA3585 IND → EWR Jul 25, 21:45 UTCJul 25, 23:00 UTC1h 15m
2026-07-25 RPA3637 ROC → EWR Jul 25, 18:55 UTCJul 25, 19:55 UTC1h 0m
2026-07-25 RPA3601 IND → IAD Jul 25, 16:20 UTCJul 25, 17:30 UTC1h 10m
2026-07-25 RPA3461 CVG → EWR Jul 25, 12:40 UTCJul 25, 13:50 UTC1h 10m
2026-07-24 RPA3403 ATL → EWR Jul 24, 23:45 UTCJul 25, 00:45 UTC1h 0m
2026-07-24 RPA3545 EWR → CMH Jul 24, 19:40 UTCJul 24, 20:40 UTC1h 0m
2026-07-24 RPA3547 EWR → BOS Jul 24, 17:05 UTCJul 24, 18:30 UTC1h 25m
2026-07-24 RPA3709 IND → EWR Jul 24, 14:20 UTCJul 24, 15:30 UTC1h 10m
2026-07-24 RPA3550 EWR → CLT Jul 24, 12:20 UTCJul 24, 12:55 UTC35m
2026-07-24 RPA3479 EWR → ORF Jul 24, 10:35 UTCJul 24, 11:15 UTC40m
2026-07-24 RPA3705 ORD → LGA Jul 24, 00:45 UTCJul 24, 02:25 UTC1h 40m
2026-07-23 RPA3710 ORF → EWR Jul 23, 22:20 UTCJul 23, 23:40 UTC1h 20m
2026-07-23 RPA3710 ORF → EWR Jul 23, 21:38 UTCJul 23, 23:38 UTC2h 0m
2026-07-23 RPA3492 EWR → CLT Jul 23, 19:05 UTCJul 23, 20:25 UTC1h 20m
2026-07-23 RPA3701 GSP → EWR Jul 23, 16:20 UTCJul 23, 18:15 UTC1h 55m
2026-07-23 RPA3423 CMH → EWR Jul 23, 13:55 UTCJul 23, 14:50 UTC55m
2026-07-23 RPA3458 - Jul 23, 10:50 UTCJul 23, 12:05 UTC1h 15m
2026-07-23 RPA3458 CMH → EWR Jul 23, 10:58 UTCJul 23, 12:04 UTC1h 6m
2026-07-22 RPA3481 EWR → YYZ Jul 22, 23:25 UTCJul 23, 00:40 UTC1h 15m
2026-07-22 RPA3580 SDF → EWR Jul 22, 20:15 UTCJul 22, 21:05 UTC50m
2026-07-22 RPA3629 SDF → EWR Jul 22, 17:15 UTCJul 22, 18:30 UTC1h 15m
2026-07-22 RPA3534 EWR → ROC Jul 22, 15:00 UTCJul 22, 15:50 UTC50m
2026-07-22 RPA3534 EWR → ROC Jul 22, 15:00 UTCJul 22, 15:42 UTC42m
2026-07-21 RPA3455 CMH → EWR Jul 21, 23:40 UTCJul 22, 00:10 UTC30m
2026-07-21 RPA3440 BUF → EWR Jul 21, 21:30 UTCJul 21, 22:10 UTC40m
2026-07-21 RPA3440 BUF → EWR Jul 21, 20:15 UTCJul 21, 22:10 UTC1h 55m
2026-07-21 RPA3440 BUF → EWR Jul 21, 20:17 UTCJul 21, 21:14 UTC57m
2026-07-21 RPA3634 - Jul 21, 17:50 UTCJul 21, 18:50 UTC1h 0m
2026-07-21 RPA3634 ORD → BNA Jul 21, 18:00 UTCJul 21, 18:49 UTC49m
2026-07-21 RPA3617 EWR → PVD Jul 21, 15:00 UTCJul 21, 16:10 UTC1h 10m
2026-07-21 RPA3553 SAT → EWR Jul 21, 12:05 UTCJul 21, 13:40 UTC1h 35m
2026-07-21 RPA3510 - Jul 21, 00:20 UTCJul 21, 02:10 UTC1h 50m
2026-07-20 RPA3562 SYR → EWR Jul 20, 21:20 UTCJul 20, 23:10 UTC1h 50m
2026-07-20 RPA3609 - Jul 20, 16:10 UTCJul 20, 18:00 UTC1h 50m
2026-07-20 RPA3697 EWR → MKE Jul 20, 13:05 UTCJul 20, 14:55 UTC1h 50m
2026-07-20 RPA3420 BUF → EWR Jul 20, 10:30 UTCJul 20, 11:25 UTC55m
2026-07-20 RPA3516 - Jul 20, 03:15 UTCJul 20, 04:00 UTC45m
2026-07-20 RPA3516 IAD → BUF Jul 20, 03:13 UTCJul 20, 04:00 UTC47m
2026-07-20 RPA3449 - Jul 20, 01:30 UTCJul 20, 02:10 UTC40m
2026-07-19 RPA3447 IAD → JAX Jul 19, 23:50 UTCJul 20, 00:45 UTC55m
2026-07-19 RPA3596 EWR → PIT Jul 19, 20:35 UTCJul 19, 21:55 UTC1h 20m
2026-07-19 RPA3638 JAX → EWR Jul 19, 15:40 UTCJul 19, 17:00 UTC1h 20m
2026-07-18 RPA3435 EWR → PHL Jul 18, 11:45 UTCJul 18, 12:45 UTC1h 0m
2026-07-18 RPA3515 PVD → EWR Jul 18, 02:32 UTCJul 18, 03:35 UTC1h 3m
2026-07-18 RPA3515 PVD → EWR Jul 18, 02:40 UTCJul 18, 03:40 UTC1h 1m

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 N791YX page for operator, model, and routing details .

Mode-S AABDF8 frequently asked

What is Mode-S code AABDF8?
AABDF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N791YX.
Where is Mode-S AABDF8 registered?
Mode-S code AABDF8 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 AABDF8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AABDF8, octal 52536770, decimal 11,189,752.
What flights does AABDF8 operate?
Mode-S AABDF8 has broadcast 20 distinct callsigns, including RPA3625, RPA3601, RPA3562, RPA3538, RPA3481.