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sensors Mode-S transponder

A9AD36

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N722YX · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A9AD36
Octal
52326466
Decimal
11,119,926
Country
US
Tail
N722YX
Type
E75L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
648
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A9AD36.

Country allocation

The ICAO 24-bit address A9AD36 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
RPA3626 - 8 2026-06-21
RPA3581 Republic Airlines 8 2026-07-20
RPA3571 - 8 2026-07-06
RPA3542 Republic Airlines 8 2026-07-20
RPA3671 Republic Airlines 7 2026-07-23
RPA3563 Republic Airlines 7 2026-07-25
RPA3496 - 7 2026-07-19
RPA3670 Republic Airlines 6 2026-05-05
RPA3658 - 6 2026-06-26
RPA3642 - 6 2026-07-08
RPA3632 - 6 2026-07-20
RPA3610 Republic Airlines 6 2026-06-14
RPA3408 - 6 2026-07-07
RPA3690 - 5 2026-06-25
RPA3684 - 5 2026-07-22
RPA3646 - 5 2026-07-13
RPA3625 - 5 2026-07-02
RPA3624 Republic Airlines 5 2026-05-20
RPA3616 Republic Airlines 5 2026-07-22
RPA3600 Republic Airlines 5 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA3426 EYW → EWR Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-26 RPA3487 YYZ → EWR Jul 26, 17:10 UTCJul 26, 18:30 UTC1h 20m
2026-07-26 RPA3636 GSP → EWR Jul 26, 14:05 UTCJul 26, 15:05 UTC1h 0m
2026-07-26 RPA3434 BUF → EWR Jul 26, 00:45 UTCJul 26, 01:30 UTC45m
2026-07-26 RPA3434 BUF → EWR Jul 26, 00:57 UTCJul 26, 01:35 UTC38m
2026-07-25 RPA3563 MSY → EWR Jul 25, 21:40 UTCJul 25, 22:55 UTC1h 15m
2026-07-25 RPA3593 TVC → EWR Jul 25, 17:35 UTCJul 25, 19:10 UTC1h 35m
2026-07-23 RPA3543 HAV → EWR Jul 23, 22:35 UTCJul 23, 23:55 UTC1h 20m
2026-07-23 RPA3615 ORF → EWR Jul 23, 20:20 UTCJul 23, 21:30 UTC1h 10m
2026-07-23 RPA3671 MHT → EWR Jul 23, 17:00 UTCJul 23, 18:00 UTC1h 0m
2026-07-23 RPA3601 - Jul 23, 14:55 UTCJul 23, 16:00 UTC1h 5m
2026-07-23 RPA3600 PHL → EWR Jul 23, 10:30 UTCJul 23, 12:25 UTC1h 55m
2026-07-23 RPA3613 EWR → BTV Jul 23, 01:25 UTCJul 23, 02:25 UTC1h 0m
2026-07-23 RPA3613 EWR → BTV Jul 23, 01:28 UTCJul 23, 02:12 UTC44m
2026-07-22 RPA3633 - Jul 22, 22:15 UTCJul 22, 23:25 UTC1h 10m
2026-07-22 RPA3616 EWR → IND Jul 22, 19:50 UTCJul 22, 20:35 UTC45m
2026-07-22 RPA3616 EWR → IND Jul 22, 19:20 UTCJul 22, 19:45 UTC25m
2026-07-22 RPA3616 EWR → IND Jul 22, 19:13 UTCJul 22, 20:34 UTC1h 21m
2026-07-22 RPA3684 - Jul 22, 16:35 UTCJul 22, 18:05 UTC1h 30m
2026-07-22 RPA3684 GSP → EWR Jul 22, 16:34 UTCJul 22, 18:00 UTC1h 26m
2026-07-22 RPA3604 - Jul 22, 13:55 UTCJul 22, 15:30 UTC1h 35m
2026-07-22 RPA3712 - Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-21 RPA3320 AVL → PWM Jul 21, 21:20 UTCJul 21, 22:50 UTC1h 30m
2026-07-21 RPA3554 - Jul 21, 18:15 UTCJul 21, 19:10 UTC55m
2026-07-21 RPA3554 ORD → CMH Jul 21, 18:19 UTCJul 21, 19:05 UTC46m
2026-07-21 RPA3507 ROC → ORD Jul 21, 14:50 UTCJul 21, 16:25 UTC1h 35m
2026-07-21 RPA3425 - Jul 21, 12:00 UTCJul 21, 13:10 UTC1h 10m
2026-07-21 RPA3425 ORD → ROC Jul 21, 12:11 UTCJul 21, 13:08 UTC57m
2026-07-20 RPA3542 YYZ → EWR Jul 20, 19:15 UTCJul 20, 21:20 UTC2h 5m
2026-07-20 RPA3542 YYZ → EWR Jul 20, 19:23 UTCJul 20, 20:52 UTC1h 29m
2026-07-20 RPA3581 RDU → EWR Jul 20, 16:10 UTCJul 20, 17:55 UTC1h 45m
2026-07-20 RPA3581 RDU → EWR Jul 20, 16:18 UTCJul 20, 17:44 UTC1h 26m
2026-07-20 RPA3632 SAV → ORD Jul 20, 12:05 UTCJul 20, 14:05 UTC2h 0m
2026-07-19 RPA3496 - Jul 19, 00:15 UTCJul 19, 02:10 UTC1h 55m
2026-07-18 RPA3542 YYZ → EWR Jul 18, 21:00 UTCJul 18, 23:15 UTC2h 15m
2026-07-18 RPA3542 YYZ → EWR Jul 18, 20:59 UTCJul 18, 23:01 UTC2h 2m
2026-07-18 RPA3581 RDU → EWR Jul 18, 16:15 UTCJul 18, 18:00 UTC1h 45m
2026-07-18 RPA3429 - Jul 18, 11:35 UTCJul 18, 12:30 UTC55m
2026-07-18 RPA3607 EWR → MSN Jul 18, 04:10 UTCJul 18, 05:00 UTC50m
2026-07-17 RPA3543 BOS → IAD Jul 17, 22:55 UTCJul 18, 00:04 UTC1h 10m
2026-07-17 RPA3615 IAD → BOS Jul 17, 19:49 UTCJul 17, 20:55 UTC1h 5m
2026-07-17 RPA3413 BOS → IAD Jul 17, 16:59 UTCJul 17, 18:10 UTC1h 10m
2026-07-17 RPA3552 IAD → BOS Jul 17, 14:20 UTCJul 17, 15:35 UTC1h 15m
2026-07-17 RPA3668 EWR → ATL Jul 17, 10:20 UTCJul 17, 11:15 UTC55m
2026-07-17 RPA3516 IAD → BUF Jul 17, 02:50 UTCJul 17, 03:45 UTC55m
2026-07-17 RPA3516 IAD → BUF Jul 17, 02:44 UTCJul 17, 03:38 UTC54m
2026-07-17 RPA3466 YYZ → IAD Jul 17, 00:04 UTCJul 17, 01:09 UTC1h 5m
2026-07-16 RPA3453 IAD → YYZ Jul 16, 21:40 UTCJul 16, 22:45 UTC1h 5m
2026-07-16 RPA3530 - Jul 16, 19:05 UTCJul 16, 20:19 UTC1h 15m
2026-07-16 RPA3446 EWR → IND Jul 16, 16:15 UTCJul 16, 17:49 UTC1h 35m

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 N722YX page for operator, model, and routing details .

Mode-S A9AD36 frequently asked

What is Mode-S code A9AD36?
A9AD36 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N722YX.
Where is Mode-S A9AD36 registered?
Mode-S code A9AD36 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 A9AD36 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9AD36, octal 52326466, decimal 11,119,926.
What flights does A9AD36 operate?
Mode-S A9AD36 has broadcast 20 distinct callsigns, including RPA3626, RPA3581, RPA3571, RPA3542, RPA3671.