Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A030A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N111HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A030A8
Octal
50030250
Decimal
10,498,216
Country
US
Tail
N111HQ
Type
E75L
Broadcasting now · callsign RPA4489 · 475 ft
Flights observed
698
Distinct callsigns
20
Country
US
Last broadcast
Jul 21, 20:30 UTC

Current position

A030A8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A030A8 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
RPA4413 Republic Airlines 11 2026-05-26
RPA4738 - 10 2026-07-11
RPA4415 - 10 2026-07-13
RPA4443 Republic Airlines 9 2026-05-22
RPA4426 - 9 2026-07-03
RPA4746 - 8 2026-07-02
RPA4508 Republic Airlines 8 2026-06-11
RPA4470 - 8 2026-06-11
RPA4581 Republic Airlines 7 2026-06-16
RPA4579 Republic Airlines 7 2026-06-06
RPA4569 Republic Airlines 7 2026-06-14
RPA4554 Republic Airlines 7 2026-05-28
RPA4663 - 6 2026-07-09
RPA4656 - 6 2026-07-14
RPA4609 - 6 2026-07-05
RPA4587 - 6 2026-07-05
RPA4493 Republic Airlines 6 2026-06-29
RPA4756 - 5 2026-06-30
RPA4700 - 5 2026-07-17
RPA4689 Republic Airlines 5 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 RPA9947 LGA → CMH Jul 21, 19:45 UTCJul 21, 20:30 UTC45m
2026-07-21 RPA4605 ORD → SDF Jul 21, 16:45 UTCJul 21, 18:40 UTC1h 55m
2026-07-21 RPA4564 - Jul 21, 11:15 UTCJul 21, 13:20 UTC2h 5m
2026-07-21 RPA4696 - Jul 21, 01:10 UTCJul 21, 03:25 UTC2h 15m
2026-07-20 RPA4378 - Jul 20, 23:00 UTCJul 20, 23:55 UTC55m
2026-07-20 RPA4378 LGA → BUF Jul 20, 21:10 UTCJul 20, 22:00 UTC50m
2026-07-20 RPA4730 BOS → IND Jul 20, 18:25 UTCJul 20, 19:10 UTC45m
2026-07-20 RPA4515 - Jul 20, 15:20 UTCJul 20, 16:40 UTC1h 20m
2026-07-20 RPA4515 - Jul 20, 13:00 UTCJul 20, 14:15 UTC1h 15m
2026-07-20 RPA4538 JFK → DCA Jul 20, 11:00 UTCJul 20, 11:45 UTC45m
2026-07-20 RPA4336 DCA → JFK Jul 20, 00:05 UTCJul 20, 00:45 UTC40m
2026-07-19 RPA4739 IND → ORD Jul 19, 21:15 UTCJul 19, 22:20 UTC1h 5m
2026-07-19 RPA4739 IND → ORD Jul 19, 18:55 UTCJul 19, 20:00 UTC1h 5m
2026-07-19 RPA4405 CMH → DCA Jul 19, 16:45 UTCJul 19, 17:40 UTC55m
2026-07-19 RPA4405 DCA → CMH Jul 19, 14:45 UTCJul 19, 15:45 UTC1h 0m
2026-07-19 RPA4352 SDF → DCA Jul 19, 12:25 UTCJul 19, 13:35 UTC1h 10m
2026-07-18 RPA9693 OMA → CVG Jul 18, 19:35 UTCJul 18, 21:00 UTC1h 25m
2026-07-18 RPA4404 CLE → PHL Jul 18, 16:25 UTCJul 18, 18:15 UTC1h 50m
2026-07-18 RPA4750 - Jul 18, 12:30 UTCJul 18, 13:55 UTC1h 25m
2026-07-18 RPA4672 DCA → SDF Jul 18, 01:10 UTCJul 18, 02:25 UTC1h 15m
2026-07-18 RPA4672 DCA → SDF Jul 18, 01:08 UTCJul 18, 02:12 UTC1h 4m
2026-07-17 RPA4572 MVY → DCA Jul 17, 22:40 UTCJul 17, 23:50 UTC1h 10m
2026-07-17 RPA4572 DCA → MVY Jul 17, 20:35 UTCJul 17, 21:34 UTC1h 0m
2026-07-17 RPA4700 - Jul 17, 18:40 UTCJul 17, 19:40 UTC1h 0m
2026-07-17 RPA4700 RDU → DCA Jul 17, 18:35 UTCJul 17, 19:38 UTC1h 3m
2026-07-17 RPA111 - Jul 17, 15:10 UTCJul 17, 16:44 UTC1h 35m
2026-07-17 RPA4683 ORF → ORD Jul 17, 10:50 UTCJul 17, 12:35 UTC1h 45m
2026-07-17 RPA4589 LGA → ORF Jul 17, 00:55 UTCJul 17, 02:10 UTC1h 15m
2026-07-16 RPA4437 - Jul 16, 21:45 UTCJul 16, 23:15 UTC1h 30m
2026-07-16 RPA4437 IND → LGA Jul 16, 21:40 UTCJul 16, 23:14 UTC1h 34m
2026-07-16 RPA4600 LGA → IND Jul 16, 18:44 UTCJul 16, 20:19 UTC1h 35m
2026-07-16 RPA4367 BOS → LGA Jul 16, 16:30 UTCJul 16, 17:14 UTC45m
2026-07-16 RPA4367 BOS → LGA Jul 16, 14:48 UTCJul 16, 15:24 UTC36m
2026-07-16 RPA4716 - Jul 16, 13:10 UTCJul 16, 15:00 UTC1h 50m
2026-07-16 RPA4716 IND → BOS Jul 16, 13:05 UTCJul 16, 14:54 UTC1h 49m
2026-07-16 RPA4664 DCA → IND Jul 16, 10:45 UTCJul 16, 12:00 UTC1h 15m
2026-07-16 RPA4664 DCA → IND Jul 16, 10:44 UTCJul 16, 11:55 UTC1h 11m
2026-07-16 RPA4336 JFK → DCA Jul 16, 04:10 UTCJul 16, 05:00 UTC50m
2026-07-16 RPA4336 JFK → DCA Jul 16, 04:10 UTCJul 16, 04:55 UTC45m
2026-07-16 RPA4390 BOS → JFK Jul 16, 02:20 UTCJul 16, 03:10 UTC50m
2026-07-15 RPA4368 - Jul 15, 18:55 UTCJul 15, 20:50 UTC1h 55m
2026-07-15 RPA4368 IND → BOS Jul 15, 18:52 UTCJul 15, 20:48 UTC1h 56m
2026-07-15 RPA111 DCA → IND Jul 15, 16:30 UTCJul 15, 17:45 UTC1h 15m
2026-07-15 RPA4393 LGA → DCA Jul 15, 13:40 UTCJul 15, 14:25 UTC45m
2026-07-15 RPA4477 - Jul 15, 10:15 UTCJul 15, 11:30 UTC1h 15m
2026-07-15 RPA4598 - Jul 15, 01:15 UTCJul 15, 02:35 UTC1h 20m
2026-07-15 RPA4598 LGA → DTW Jul 15, 01:14 UTCJul 15, 02:31 UTC1h 17m
2026-07-14 RPA4421 - Jul 14, 23:10 UTCJul 15, 00:25 UTC1h 15m
2026-07-14 RPA4421 - Jul 14, 21:00 UTCJul 14, 22:05 UTC1h 5m
2026-07-14 RPA4565 - Jul 14, 19:15 UTCJul 14, 20:00 UTC45m

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 N111HQ page for operator, model, and routing details .

Mode-S A030A8 frequently asked

What is Mode-S code A030A8?
A030A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N111HQ.
Where is Mode-S A030A8 registered?
Mode-S code A030A8 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 A030A8 broadcasting right now?
Yes. Mode-S A030A8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A030A8, octal 50030250, decimal 10,498,216.
What flights does A030A8 operate?
Mode-S A030A8 has broadcast 20 distinct callsigns, including RPA4413, RPA4738, RPA4415, RPA4443, RPA4426.