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sensors Mode-S transponder

A01097

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N103HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A01097
Octal
50010227
Decimal
10,490,007
Country
US
Tail
N103HQ
Type
E75L
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
747
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S A01097.

Country allocation

The ICAO 24-bit address A01097 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
RPA4426 - 10 2026-07-18
RPA4780 Republic Airlines 8 2026-06-10
RPA4565 Republic Airlines 8 2026-06-08
RPA4496 Republic Airlines 8 2026-07-26
RPA4478 - 8 2026-06-26
RPA4768 - 7 2026-07-09
RPA4456 Republic Airlines 7 2026-05-30
RPA4425 Republic Airlines 7 2026-07-24
RPA4421 Republic Airlines 7 2026-06-16
RPA4418 Republic Airlines 7 2026-07-25
RPA4774 Republic Airlines 6 2026-07-22
RPA4773 - 6 2026-06-20
RPA4720 Republic Airlines 6 2026-07-23
RPA4704 - 6 2026-07-23
RPA4697 - 6 2026-06-17
RPA4680 Republic Airlines 6 2026-06-09
RPA4678 - 6 2026-06-30
RPA4676 - 6 2026-07-12
RPA4640 - 6 2026-07-19
RPA4613 Republic Airlines 6 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA4588 JFK → RDU Jul 26, 19:20 UTCJul 26, 20:50 UTC1h 30m
2026-07-26 RPA4496 LGA → BUF Jul 26, 16:50 UTCJul 26, 17:50 UTC1h 0m
2026-07-26 RPA4496 LGA → BUF Jul 26, 14:05 UTCJul 26, 15:15 UTC1h 10m
2026-07-26 RPA4420 LGA → GSO Jul 26, 11:05 UTCJul 26, 12:45 UTC1h 40m
2026-07-26 RPA4420 LGA → GSO Jul 26, 11:02 UTCJul 26, 12:40 UTC1h 38m
2026-07-25 RPA4526 LGA → OKC Jul 25, 21:25 UTCJul 25, 22:40 UTC1h 15m
2026-07-25 RPA4418 AVL → LGA Jul 25, 17:50 UTCJul 25, 19:15 UTC1h 25m
2026-07-25 RPA4418 AVL → LGA Jul 25, 15:10 UTCJul 25, 16:40 UTC1h 30m
2026-07-25 RPA4604 CMH → LGA Jul 25, 12:10 UTCJul 25, 13:25 UTC1h 15m
2026-07-25 RPA4445 YYZ → LGA Jul 25, 02:25 UTCJul 25, 03:10 UTC45m
2026-07-24 RPA4465 DCA → STL Jul 24, 23:05 UTCJul 25, 00:25 UTC1h 20m
2026-07-24 RPA4425 DCA → ALB Jul 24, 20:50 UTCJul 24, 21:55 UTC1h 5m
2026-07-24 RPA4425 DCA → ALB Jul 24, 20:48 UTCJul 24, 21:50 UTC1h 2m
2026-07-24 RPA4756 SDF → BOS Jul 24, 17:50 UTCJul 24, 19:35 UTC1h 45m
2026-07-24 RPA4756 SDF → BOS Jul 24, 17:45 UTCJul 24, 19:33 UTC1h 48m
2026-07-24 RPA4756 SDF → BOS Jul 24, 14:50 UTCJul 24, 16:20 UTC1h 30m
2026-07-24 RPA4688 LGA → ROA Jul 24, 11:15 UTCJul 24, 12:50 UTC1h 35m
2026-07-24 RPA4698 ILM → LGA Jul 24, 02:35 UTCJul 24, 04:05 UTC1h 30m
2026-07-24 RPA4729 CHS → DCA Jul 24, 00:05 UTCJul 24, 00:30 UTC25m
2026-07-23 RPA4729 CHS → DCA Jul 23, 22:50 UTCJul 23, 23:25 UTC35m
2026-07-23 RPA4720 MCI → LGA Jul 23, 19:30 UTCJul 23, 20:20 UTC50m
2026-07-23 RPA4720 MCI → LGA Jul 23, 17:10 UTCJul 23, 17:55 UTC45m
2026-07-23 RPA4704 - Jul 23, 14:50 UTCJul 23, 15:45 UTC55m
2026-07-23 RPA4704 ORD → SDF Jul 23, 12:40 UTCJul 23, 13:30 UTC50m
2026-07-23 RPA4519 DCA → CMH Jul 23, 10:10 UTCJul 23, 11:10 UTC1h 0m
2026-07-23 RPA4442 BOS → DCA Jul 23, 03:50 UTCJul 23, 04:40 UTC50m
2026-07-22 RPA4774 PVD → DCA Jul 22, 23:50 UTCJul 23, 02:20 UTC2h 30m
2026-07-22 RPA4774 PVD → DCA Jul 22, 20:50 UTCJul 22, 22:35 UTC1h 45m
2026-07-22 RPA4409 - Jul 22, 18:35 UTCJul 22, 19:45 UTC1h 10m
2026-07-22 RPA4409 CVG → ORD Jul 22, 18:34 UTCJul 22, 19:35 UTC1h 1m
2026-07-22 RPA4609 - Jul 22, 16:10 UTCJul 22, 17:45 UTC1h 35m
2026-07-22 RPA4587 - Jul 22, 13:10 UTCJul 22, 14:10 UTC1h 0m
2026-07-22 RPA4587 PIT → JFK Jul 22, 13:07 UTCJul 22, 14:13 UTC1h 6m
2026-07-22 RPA4447 PHL → IND Jul 22, 03:20 UTCJul 22, 04:20 UTC1h 0m
2026-07-22 RPA4447 PHL → IND Jul 22, 03:17 UTCJul 22, 04:16 UTC59m
2026-07-21 RPA4422 - Jul 21, 16:55 UTCJul 21, 18:30 UTC1h 35m
2026-07-21 RPA4422 - Jul 21, 13:35 UTCJul 21, 15:05 UTC1h 30m
2026-07-21 RPA4522 PHL → SDF Jul 21, 10:10 UTCJul 21, 11:05 UTC55m
2026-07-20 RPA4521 LGA → IND Jul 20, 23:45 UTCJul 21, 00:40 UTC55m
2026-07-20 RPA4685 DCA → LGA Jul 20, 21:50 UTCJul 20, 22:30 UTC40m
2026-07-20 RPA4340 DCA → BDL Jul 20, 18:45 UTCJul 20, 20:20 UTC1h 35m
2026-07-20 RPA4340 DCA → BDL Jul 20, 18:42 UTCJul 20, 20:20 UTC1h 38m
2026-07-20 RPA4340 DCA → BDL Jul 20, 16:25 UTCJul 20, 17:50 UTC1h 25m
2026-07-20 RPA4618 SAV → DCA Jul 20, 13:25 UTCJul 20, 14:45 UTC1h 20m
2026-07-20 RPA4618 DCA → SAV Jul 20, 11:05 UTCJul 20, 12:20 UTC1h 15m
2026-07-20 RPA4719 LGA → DCA Jul 20, 01:55 UTCJul 20, 02:50 UTC55m
2026-07-20 RPA4617 LGA → LGA Jul 20, 00:20 UTCJul 20, 00:25 UTC5m
2026-07-19 RPA4617 - Jul 19, 22:40 UTCJul 20, 00:25 UTC1h 45m
2026-07-19 RPA4617 CMH → LGA Jul 19, 22:37 UTCJul 20, 00:02 UTC1h 25m
2026-07-19 RPA4767 JFK → CMH Jul 19, 20:00 UTCJul 19, 21:25 UTC1h 25m

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 N103HQ page for operator, model, and routing details .

Mode-S A01097 frequently asked

What is Mode-S code A01097?
A01097 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N103HQ.
Where is Mode-S A01097 registered?
Mode-S code A01097 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 A01097 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A01097, octal 50010227, decimal 10,490,007.
What flights does A01097 operate?
Mode-S A01097 has broadcast 20 distinct callsigns, including RPA4426, RPA4780, RPA4565, RPA4496, RPA4478.