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sensors Mode-S transponder

AAA19E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N784YX · operated by REPUBLIC AIRWAYS INC

Hex
AAA19E
Octal
52520636
Decimal
11,182,494
Country
US
Tail
N784YX
Type
E75L
Broadcasting now · callsign RPA3483 · 14,800 ft
Flights observed
651
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:55 UTC

Current position

AAA19E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAA19E 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 Republic Airlines 8 2026-05-30
RPA3450 - 8 2026-07-14
RPA3714 Republic Airlines 6 2026-04-28
RPA3701 Republic Airlines 6 2026-07-26
RPA3663 Republic Airlines 6 2026-06-06
RPA3621 Republic Airlines 6 2026-07-23
RPA3591 - 6 2026-07-01
RPA3561 - 6 2026-07-11
RPA3540 - 6 2026-07-12
RPA3532 - 6 2026-07-17
RPA3490 Republic Airlines 6 2026-07-24
RPA3707 - 5 2026-07-08
RPA3703 Republic Airlines 5 2026-05-10
RPA3700 - 5 2026-07-06
RPA3666 - 5 2026-06-24
RPA3664 Republic Airlines 5 2026-04-28
RPA3648 - 5 2026-07-09
RPA3645 - 5 2026-07-11
RPA3639 - 5 2026-07-15
RPA3620 - 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3616 EWR → IND Jul 26, 18:55 UTCJul 26, 19:55 UTC1h 0m
2026-07-26 RPA3701 GSP → EWR Jul 26, 16:40 UTCJul 26, 18:00 UTC1h 20m
2026-07-26 RPA3423 CMH → EWR Jul 26, 13:40 UTCJul 26, 14:40 UTC1h 0m
2026-07-26 RPA3594 IAD → EWR Jul 26, 10:35 UTCJul 26, 12:20 UTC1h 45m
2026-07-26 RPA3659 GSO → EWR Jul 26, 03:20 UTCJul 26, 04:05 UTC45m
2026-07-25 RPA3549 EWR → CLT Jul 25, 21:20 UTCJul 25, 23:10 UTC1h 50m
2026-07-25 RPA3549 EWR → CLT Jul 25, 21:21 UTCJul 25, 22:51 UTC1h 30m
2026-07-25 RPA3715 EWR → YUL Jul 25, 18:50 UTCJul 25, 19:45 UTC55m
2026-07-25 RPA3684 PIT → EWR Jul 25, 15:30 UTCJul 25, 16:55 UTC1h 25m
2026-07-25 RPA3604 EWR → PHL Jul 25, 12:50 UTCJul 25, 14:20 UTC1h 30m
2026-07-25 RPA3652 CVG → EWR Jul 25, 10:10 UTCJul 25, 11:25 UTC1h 15m
2026-07-24 RPA3586 EWR → GSO Jul 24, 22:35 UTCJul 24, 23:55 UTC1h 20m
2026-07-24 RPA3705 ORD → LGA Jul 24, 19:20 UTCJul 24, 20:20 UTC1h 0m
2026-07-24 RPA3490 ORF → EWR Jul 24, 16:50 UTCJul 24, 17:30 UTC40m
2026-07-24 RPA3490 ORF → EWR Jul 24, 17:00 UTCJul 24, 18:03 UTC1h 3m
2026-07-24 RPA3590 EWR → GSP Jul 24, 13:35 UTCJul 24, 14:55 UTC1h 20m
2026-07-23 RPA3602 PHL → EWR Jul 23, 22:20 UTCJul 23, 23:50 UTC1h 30m
2026-07-23 RPA3414 EWR → BNA Jul 23, 19:15 UTCJul 23, 20:40 UTC1h 25m
2026-07-23 RPA3621 IAD → EWR Jul 23, 16:10 UTCJul 23, 17:10 UTC1h 0m
2026-07-23 RPA3451 MKE → EWR Jul 23, 13:25 UTCJul 23, 15:00 UTC1h 35m
2026-07-23 RPA3451 MKE → EWR Jul 23, 13:34 UTCJul 23, 14:46 UTC1h 12m
2026-07-23 RPA3683 DCA → EWR Jul 23, 11:00 UTCJul 23, 12:45 UTC1h 45m
2026-07-22 RPA3527 EWR → SDF Jul 22, 22:30 UTCJul 22, 23:50 UTC1h 20m
2026-07-22 RPA3473 - Jul 22, 17:55 UTCJul 22, 19:35 UTC1h 40m
2026-07-22 RPA3715 - Jul 22, 14:45 UTCJul 22, 15:40 UTC55m
2026-07-21 RPA3308 DTW → CLT Jul 21, 21:55 UTCJul 21, 23:25 UTC1h 30m
2026-07-21 RPA3308 DTW → CLT Jul 21, 21:52 UTCJul 21, 23:26 UTC1h 34m
2026-07-21 RPA3290 PVD → IAD Jul 21, 20:00 UTCJul 21, 20:45 UTC45m
2026-07-21 RPA3704 EWR → DCA Jul 21, 17:20 UTCJul 21, 18:55 UTC1h 35m
2026-07-21 RPA3539 GSP → EWR Jul 21, 12:05 UTCJul 21, 13:00 UTC55m
2026-07-20 RPA3455 CMH → EWR Jul 20, 23:45 UTCJul 21, 00:15 UTC30m
2026-07-20 RPA3426 EYW → EWR Jul 20, 19:30 UTCJul 20, 21:25 UTC1h 55m
2026-07-20 RPA3487 - Jul 20, 17:05 UTCJul 20, 18:10 UTC1h 5m
2026-07-20 RPA3636 YYZ → IAD Jul 20, 13:50 UTCJul 20, 14:50 UTC1h 0m
2026-07-20 RPA3434 EWR → YYZ Jul 20, 03:00 UTCJul 20, 04:05 UTC1h 5m
2026-07-20 RPA3434 EWR → YYZ Jul 20, 01:58 UTCJul 20, 04:00 UTC2h 2m
2026-07-19 RPA3312 ITH → MKE Jul 19, 22:15 UTCJul 20, 00:05 UTC1h 50m
2026-07-19 RPA3312 ITH → MKE Jul 19, 22:08 UTCJul 19, 23:59 UTC1h 51m
2026-07-19 RPA3574 - Jul 19, 19:10 UTCJul 19, 20:25 UTC1h 15m
2026-07-18 RPA3608 - Jul 18, 11:25 UTCJul 18, 12:40 UTC1h 15m
2026-07-18 RPA3608 GSO → EWR Jul 18, 10:26 UTCJul 18, 12:43 UTC2h 17m
2026-07-18 RPA3719 - Jul 18, 02:55 UTCJul 18, 04:00 UTC1h 5m
2026-07-18 RPA3644 - Jul 18, 00:15 UTCJul 18, 01:25 UTC1h 10m
2026-07-17 RPA3596 EWR → DTW Jul 17, 20:35 UTCJul 17, 21:55 UTC1h 20m
2026-07-17 RPA3596 - Jul 17, 17:20 UTCJul 17, 18:34 UTC1h 15m
2026-07-17 RPA3638 EWR → CMH Jul 17, 15:00 UTCJul 17, 15:55 UTC55m
2026-07-17 RPA3638 EWR → CMH Jul 17, 14:50 UTCJul 17, 16:04 UTC1h 15m
2026-07-17 RPA3685 - Jul 17, 11:45 UTCJul 17, 13:10 UTC1h 25m
2026-07-17 RPA3532 - Jul 17, 00:14 UTCJul 17, 01:05 UTC50m
2026-07-16 RPA3532 ORD → CVG Jul 16, 23:42 UTCJul 17, 01:04 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 N784YX page for operator, model, and routing details .

Mode-S AAA19E frequently asked

What is Mode-S code AAA19E?
AAA19E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N784YX.
Where is Mode-S AAA19E registered?
Mode-S code AAA19E 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 AAA19E broadcasting right now?
Yes. Mode-S AAA19E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA19E, octal 52520636, decimal 11,182,494.
What flights does AAA19E operate?
Mode-S AAA19E has broadcast 20 distinct callsigns, including RPA3625, RPA3450, RPA3714, RPA3701, RPA3663.