Apparatus

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sensors Mode-S transponder

A0345F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N112HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A0345F
Octal
50032137
Decimal
10,499,167
Country
US
Tail
N112HQ
Type
E75L
Broadcasting now · callsign RPA4495 · 33,000 ft
Flights observed
632
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A0345F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0345F 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
RPA4720 - 13 2026-07-07
RPA4500 - 11 2026-07-13
RPA4607 Republic Airlines 10 2026-06-12
RPA4412 - 10 2026-06-30
RPA4755 Republic Airlines 9 2026-05-20
RPA4429 - 8 2026-06-21
RPA4612 - 7 2026-06-22
RPA4350 Republic Airlines 7 2026-05-19
RPA4808 - 6 2026-06-27
RPA4767 Republic Airlines 6 2026-06-02
RPA4713 Republic Airlines 6 2026-05-03
RPA4530 Republic Airlines 6 2026-06-04
RPA4487 Republic Airlines 6 2026-06-10
RPA4470 Republic Airlines 6 2026-06-07
RPA4368 Republic Airlines 6 2026-06-27
RPA4708 - 5 2026-06-24
RPA4704 Republic Airlines 5 2026-06-05
RPA4590 Republic Airlines 5 2026-05-13
RPA4575 - 5 2026-07-11
RPA4537 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RPA4710 JFK → BNA Jul 14, 19:30 UTCJul 14, 21:05 UTC1h 35m
2026-07-14 RPA4765 - Jul 14, 16:45 UTCJul 14, 18:20 UTC1h 35m
2026-07-14 RPA4354 - Jul 14, 13:40 UTCJul 14, 15:15 UTC1h 35m
2026-07-14 RPA4354 ORD → RDU Jul 14, 13:36 UTCJul 14, 15:15 UTC1h 39m
2026-07-14 RPA4651 - Jul 14, 10:05 UTCJul 14, 11:30 UTC1h 25m
2026-07-14 RPA4640 - Jul 14, 02:30 UTCJul 14, 04:00 UTC1h 30m
2026-07-14 RPA4640 ORD → MDT Jul 14, 02:28 UTCJul 14, 03:59 UTC1h 31m
2026-07-13 RPA4400 - Jul 13, 22:35 UTCJul 14, 00:25 UTC1h 50m
2026-07-13 RPA4400 - Jul 13, 19:40 UTCJul 13, 21:40 UTC2h 0m
2026-07-13 RPA4500 - Jul 13, 16:10 UTCJul 13, 17:40 UTC1h 30m
2026-07-13 RPA4500 - Jul 13, 13:30 UTCJul 13, 15:05 UTC1h 35m
2026-07-13 RPA4427 - Jul 13, 11:25 UTCJul 13, 11:40 UTC15m
2026-07-13 RPA4427 - Jul 13, 10:35 UTCJul 13, 11:20 UTC45m
2026-07-13 RPA4427 PIT → ORD Jul 13, 10:35 UTCJul 13, 11:39 UTC1h 4m
2026-07-12 RPA4569 - Jul 12, 23:55 UTCJul 13, 00:50 UTC55m
2026-07-12 RPA4569 ORD → PIT Jul 12, 23:52 UTCJul 13, 00:50 UTC58m
2026-07-12 RPA4386 - Jul 12, 18:15 UTCJul 12, 20:25 UTC2h 10m
2026-07-12 RPA4386 BOS → ORD Jul 12, 18:14 UTCJul 12, 20:13 UTC1h 59m
2026-07-12 RPA4635 - Jul 12, 16:30 UTCJul 12, 17:10 UTC40m
2026-07-12 RPA4635 - Jul 12, 14:55 UTCJul 12, 15:40 UTC45m
2026-07-12 RPA9928 LGA → BOS Jul 12, 13:30 UTCJul 12, 14:05 UTC35m
2026-07-11 RPA4575 - Jul 11, 18:25 UTCJul 11, 20:15 UTC1h 50m
2026-07-11 RPA4575 YHZ → LGA Jul 11, 18:21 UTCJul 11, 20:10 UTC1h 49m
2026-07-11 RPA4575 - Jul 11, 15:55 UTCJul 11, 17:15 UTC1h 20m
2026-07-11 RPA4675 BOS → JFK Jul 11, 12:20 UTCJul 11, 14:20 UTC2h 0m
2026-07-11 RPA4674 - Jul 11, 01:10 UTCJul 11, 03:05 UTC1h 55m
2026-07-10 RPA4343 BGR → LGA Jul 10, 16:40 UTCJul 10, 18:00 UTC1h 20m
2026-07-10 RPA4343 BGR → LGA Jul 10, 16:37 UTCJul 10, 17:54 UTC1h 17m
2026-07-10 RPA4343 LGA → BGR Jul 10, 14:45 UTCJul 10, 15:45 UTC1h 0m
2026-07-10 RPA4604 - Jul 10, 11:55 UTCJul 10, 13:00 UTC1h 5m
2026-07-10 RPA4604 CMH → LGA Jul 10, 11:50 UTCJul 10, 12:59 UTC1h 9m
2026-07-10 RPA4445 - Jul 10, 03:05 UTCJul 10, 03:55 UTC50m
2026-07-10 RPA4445 ORD → CMH Jul 10, 03:02 UTCJul 10, 03:53 UTC51m
2026-07-09 RPA4534 - Jul 9, 20:35 UTCJul 9, 22:30 UTC1h 55m
2026-07-09 RPA4534 - Jul 9, 17:25 UTCJul 9, 19:20 UTC1h 55m
2026-07-09 RPA4413 - Jul 9, 14:15 UTCJul 9, 15:25 UTC1h 10m
2026-07-09 RPA4413 BUF → ORD Jul 9, 14:10 UTCJul 9, 15:26 UTC1h 16m
2026-07-09 RPA4413 - Jul 9, 12:00 UTCJul 9, 13:10 UTC1h 10m
2026-07-08 RPA4492 - Jul 8, 23:40 UTCJul 9, 01:25 UTC1h 45m
2026-07-08 RPA4436 LGA → RDU Jul 8, 20:55 UTCJul 8, 22:00 UTC1h 5m
2026-07-08 RPA4730 DCA → LGA Jul 8, 18:20 UTCJul 8, 19:05 UTC45m
2026-07-08 RPA4730 DCA → LGA Jul 8, 18:19 UTCJul 8, 19:01 UTC42m
2026-07-08 RPA4349 BOS → DCA Jul 8, 15:40 UTCJul 8, 16:55 UTC1h 15m
2026-07-08 RPA4349 BOS → DCA Jul 8, 15:40 UTCJul 8, 16:53 UTC1h 13m
2026-07-08 RPA4687 - Jul 8, 12:25 UTCJul 8, 14:30 UTC2h 5m
2026-07-07 RPA9937 DCA → BOS Jul 7, 23:00 UTCJul 7, 23:30 UTC30m
2026-07-07 RPA4720 CVG → ORD Jul 7, 19:10 UTCJul 7, 20:15 UTC1h 5m
2026-07-07 RPA4720 CVG → ORD Jul 7, 19:10 UTCJul 7, 20:03 UTC53m
2026-07-07 RPA4720 - Jul 7, 17:30 UTCJul 7, 18:15 UTC45m
2026-07-07 RPA4443 - Jul 7, 14:45 UTCJul 7, 15:35 UTC50m

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 N112HQ page for operator, model, and routing details .

Mode-S A0345F frequently asked

What is Mode-S code A0345F?
A0345F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N112HQ.
Where is Mode-S A0345F registered?
Mode-S code A0345F 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 A0345F broadcasting right now?
Yes. Mode-S A0345F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0345F, octal 50032137, decimal 10,499,167.
What flights does A0345F operate?
Mode-S A0345F has broadcast 20 distinct callsigns, including RPA4720, RPA4500, RPA4607, RPA4412, RPA4755.