Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A03816

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N113HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A03816
Octal
50034026
Decimal
10,500,118
Country
US
Tail
N113HQ
Type
E75L
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
749
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A03816.

Country allocation

The ICAO 24-bit address A03816 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
RPA4676 - 8 2026-07-16
RPA4367 Republic Airlines 8 2026-07-22
RPA4352 - 8 2026-07-13
RPA4745 - 7 2026-06-28
RPA4569 - 7 2026-07-11
RPA4538 Republic Airlines 7 2026-07-25
RPA4534 - 7 2026-07-01
RPA4428 Republic Airlines 7 2026-07-21
RPA4709 - 6 2026-07-05
RPA4708 - 6 2026-07-06
RPA4697 - 6 2026-07-08
RPA4595 Republic Airlines 6 2026-05-05
RPA4590 - 6 2026-07-09
RPA4564 - 6 2026-07-23
RPA4460 Republic Airlines 6 2026-06-12
RPA4415 Republic Airlines 6 2026-05-05
RPA4372 Republic Airlines 6 2026-07-24
RPA4358 - 6 2026-07-11
RPA4804 - 5 2026-07-15
RPA4787 Republic Airlines 5 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA4545 RDU → LGA Jul 26, 19:55 UTCJul 26, 20:55 UTC1h 0m
2026-07-26 RPA4545 RDU → LGA Jul 26, 17:45 UTCJul 26, 18:35 UTC50m
2026-07-26 RPA4602 CLE → JFK Jul 26, 14:55 UTCJul 26, 16:00 UTC1h 5m
2026-07-26 RPA4602 CLE → JFK Jul 26, 14:53 UTCJul 26, 15:53 UTC1h 0m
2026-07-26 RPA4649 PHL → ATL Jul 26, 13:00 UTCJul 26, 13:55 UTC55m
2026-07-26 RPA4649 PHL → ATL Jul 26, 12:57 UTCJul 26, 13:56 UTC59m
2026-07-26 RPA4549 SDF → DCA Jul 26, 10:15 UTCJul 26, 11:30 UTC1h 15m
2026-07-25 RPA4672 JFK → CLE Jul 25, 22:15 UTCJul 25, 23:35 UTC1h 20m
2026-07-25 RPA4672 JFK → CLE Jul 25, 22:14 UTCJul 25, 23:30 UTC1h 16m
2026-07-25 RPA4685 LGA → CHO Jul 25, 20:13 UTCJul 25, 20:54 UTC41m
2026-07-25 RPA4685 LGA → CHO Jul 25, 20:15 UTCJul 25, 20:55 UTC40m
2026-07-25 RPA4570 JFK → BWI Jul 25, 17:15 UTCJul 25, 18:10 UTC55m
2026-07-25 RPA4570 JFK → BWI Jul 25, 15:40 UTCJul 25, 16:15 UTC35m
2026-07-25 RPA4491 CMH → PHL Jul 25, 13:50 UTCJul 25, 14:30 UTC40m
2026-07-25 RPA4538 JFK → DCA Jul 25, 10:53 UTCJul 25, 11:34 UTC41m
2026-07-25 RPA4538 JFK → DCA Jul 25, 10:55 UTCJul 25, 11:35 UTC40m
2026-07-25 RPA4417 CHO → LGA Jul 25, 01:50 UTCJul 25, 03:00 UTC1h 10m
2026-07-24 RPA4596 BOS → CMH Jul 24, 23:30 UTCJul 25, 00:45 UTC1h 15m
2026-07-24 RPA4596 BOS → CMH Jul 24, 23:26 UTCJul 25, 00:40 UTC1h 14m
2026-07-24 RPA4372 MEM → PHL Jul 24, 20:33 UTCJul 24, 22:12 UTC1h 39m
2026-07-24 RPA4372 MEM → PHL Jul 24, 20:35 UTCJul 24, 22:30 UTC1h 55m
2026-07-24 RPA4343 BNA → PHL Jul 24, 16:35 UTCJul 24, 17:50 UTC1h 15m
2026-07-24 RPA4343 BNA → PHL Jul 24, 14:30 UTCJul 24, 15:30 UTC1h 0m
2026-07-24 RPA4542 YYZ → LGA Jul 24, 11:45 UTCJul 24, 12:45 UTC1h 0m
2026-07-24 RPA4369 PHL → BGR Jul 24, 01:45 UTCJul 24, 02:50 UTC1h 5m
2026-07-23 RPA4429 JFK → RDU Jul 23, 23:20 UTCJul 24, 00:30 UTC1h 10m
2026-07-23 RPA4429 JFK → RDU Jul 23, 20:50 UTCJul 23, 22:10 UTC1h 20m
2026-07-23 RPA4418 AVL → LGA Jul 23, 17:30 UTCJul 23, 18:55 UTC1h 25m
2026-07-23 RPA4418 AVL → LGA Jul 23, 14:55 UTCJul 23, 16:35 UTC1h 40m
2026-07-23 RPA4564 - Jul 23, 12:40 UTCJul 23, 13:50 UTC1h 10m
2026-07-23 RPA4564 - Jul 23, 11:35 UTCJul 23, 12:35 UTC1h 0m
2026-07-23 RPA4696 MSP → PHL Jul 23, 01:10 UTCJul 23, 03:25 UTC2h 15m
2026-07-22 RPA4378 - Jul 22, 22:10 UTCJul 22, 23:00 UTC50m
2026-07-22 RPA4378 LGA → BUF Jul 22, 20:15 UTCJul 22, 21:10 UTC55m
2026-07-22 RPA4367 DCA → PVD Jul 22, 16:50 UTCJul 22, 17:35 UTC45m
2026-07-22 RPA4367 DCA → PVD Jul 22, 15:05 UTCJul 22, 15:45 UTC40m
2026-07-21 RPA4428 LGA → LIT Jul 21, 16:50 UTCJul 21, 18:40 UTC1h 50m
2026-07-21 RPA4428 LGA → LIT Jul 21, 13:30 UTCJul 21, 15:00 UTC1h 30m
2026-07-21 RPA4682 ILM → LGA Jul 21, 10:20 UTCJul 21, 11:40 UTC1h 20m
2026-07-21 RPA4792 - Jul 21, 00:50 UTCJul 21, 01:55 UTC1h 5m
2026-07-20 RPA4506 BNA → LGA Jul 20, 22:45 UTCJul 20, 23:50 UTC1h 5m
2026-07-20 RPA4506 BNA → LGA Jul 20, 20:30 UTCJul 20, 21:45 UTC1h 15m
2026-07-20 RPA4565 DCA → PWM Jul 20, 17:45 UTCJul 20, 18:35 UTC50m
2026-07-20 RPA4565 DCA → PWM Jul 20, 17:44 UTCJul 20, 18:33 UTC49m
2026-07-20 RPA4565 DCA → PWM Jul 20, 15:55 UTCJul 20, 16:35 UTC40m
2026-07-20 RPA4656 LGA → BNA Jul 20, 12:15 UTCJul 20, 14:55 UTC2h 40m
2026-07-20 RPA4656 LGA → BNA Jul 20, 12:09 UTCJul 20, 14:54 UTC2h 45m
2026-07-19 RPA4571 ATL → LGA Jul 19, 03:10 UTCJul 19, 05:05 UTC1h 55m
2026-07-19 RPA4571 ATL → LGA Jul 19, 03:09 UTCJul 19, 05:01 UTC1h 52m
2026-07-18 RPA4548 PHL → PVD Jul 18, 23:40 UTCJul 19, 02:00 UTC2h 20m

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 N113HQ page for operator, model, and routing details .

Mode-S A03816 frequently asked

What is Mode-S code A03816?
A03816 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N113HQ.
Where is Mode-S A03816 registered?
Mode-S code A03816 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 A03816 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A03816, octal 50034026, decimal 10,500,118.
What flights does A03816 operate?
Mode-S A03816 has broadcast 20 distinct callsigns, including RPA4676, RPA4367, RPA4352, RPA4745, RPA4569.