Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A01BBC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N106HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A01BBC
Octal
50015674
Decimal
10,492,860
Country
US
Tail
N106HQ
Type
E75L
No current signal · last broadcast 3h ago
Flights observed
662
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A01BBC.

Country allocation

The ICAO 24-bit address A01BBC 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
RPA4422 - 11 2026-07-01
RPA4698 Republic Airlines 9 2026-06-01
RPA4338 Republic Airlines 8 2026-06-18
RPA4740 - 7 2026-07-06
RPA4720 - 7 2026-06-18
RPA4470 - 7 2026-07-11
RPA4412 Republic Airlines 7 2026-05-28
RPA4379 - 7 2026-06-20
RPA4359 - 7 2026-07-07
RPA4350 - 7 2026-07-10
RPA4712 - 6 2026-07-05
RPA4685 - 6 2026-07-11
RPA4680 Republic Airlines 6 2026-04-30
RPA4668 - 6 2026-07-06
RPA4642 Republic Airlines 6 2026-05-08
RPA4555 - 6 2026-06-14
RPA4508 - 6 2026-06-22
RPA4423 - 6 2026-06-20
RPA4414 Republic Airlines 6 2026-05-13
RPA4380 - 6 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RPA4804 JFK → RDU Jul 14, 23:03 UTCJul 15, 00:10 UTC1h 7m
2026-07-14 RPA4804 JFK → RDU Jul 14, 23:05 UTCJul 15, 00:15 UTC1h 10m
2026-07-14 RPA4371 - Jul 14, 19:55 UTCJul 14, 20:05 UTC10m
2026-07-14 RPA4371 - Jul 14, 18:10 UTCJul 14, 20:05 UTC1h 55m
2026-07-14 RPA4371 ORD → JFK Jul 14, 18:09 UTCJul 14, 19:38 UTC1h 29m
2026-07-14 RPA4365 JFK → ORD Jul 14, 14:25 UTCJul 14, 16:15 UTC1h 50m
2026-07-14 RPA4365 JFK → ORD Jul 14, 14:23 UTCJul 14, 16:13 UTC1h 50m
2026-07-14 RPA4631 - Jul 14, 11:30 UTCJul 14, 13:20 UTC1h 50m
2026-07-13 RPA4637 PHL → IND Jul 13, 22:35 UTCJul 14, 00:00 UTC1h 25m
2026-07-13 RPA4545 - Jul 13, 20:05 UTCJul 13, 21:05 UTC1h 0m
2026-07-13 RPA4545 ACK → PHL Jul 13, 20:03 UTCJul 13, 21:04 UTC1h 1m
2026-07-13 RPA4545 PHL → ACK Jul 13, 17:40 UTCJul 13, 18:35 UTC55m
2026-07-13 RPA4602 - Jul 13, 15:25 UTCJul 13, 16:20 UTC55m
2026-07-13 RPA4649 DCA → MVY Jul 13, 13:00 UTCJul 13, 14:05 UTC1h 5m
2026-07-13 RPA4649 DCA → MVY Jul 13, 13:00 UTCJul 13, 14:05 UTC1h 5m
2026-07-13 RPA4549 - Jul 13, 10:10 UTCJul 13, 11:25 UTC1h 15m
2026-07-13 RPA4466 - Jul 13, 01:01 UTCJul 13, 02:20 UTC1h 20m
2026-07-13 RPA4466 PHL → PHL Jul 13, 00:45 UTCJul 13, 00:50 UTC5m
2026-07-12 RPA4749 ORF → PHL Jul 12, 21:40 UTCJul 12, 22:25 UTC45m
2026-07-12 RPA4749 ORF → PHL Jul 12, 21:38 UTCJul 12, 22:23 UTC45m
2026-07-12 RPA4749 PHL → ORF Jul 12, 19:50 UTCJul 12, 20:30 UTC40m
2026-07-12 RPA4735 - Jul 12, 17:15 UTCJul 12, 18:15 UTC1h 0m
2026-07-12 RPA4735 - Jul 12, 15:10 UTCJul 12, 15:55 UTC45m
2026-07-12 RPA4735 PHL → PHL Jul 12, 14:55 UTCJul 12, 15:05 UTC10m
2026-07-12 RPA4711 - Jul 12, 12:40 UTCJul 12, 13:50 UTC1h 10m
2026-07-11 RPA4462 LGA → CMH Jul 11, 19:55 UTCJul 11, 21:25 UTC1h 30m
2026-07-11 RPA4470 OKC → LGA Jul 11, 15:45 UTCJul 11, 18:50 UTC3h 5m
2026-07-11 RPA106 LGA → OKC Jul 11, 11:10 UTCJul 11, 14:25 UTC3h 15m
2026-07-11 RPA4685 DCA → LGA Jul 11, 05:31 UTCJul 11, 06:10 UTC40m
2026-07-11 RPA4402 CMH → DCA Jul 11, 02:00 UTCJul 11, 03:05 UTC1h 5m
2026-07-10 RPA4402 DCA → CMH Jul 10, 22:20 UTCJul 10, 23:20 UTC1h 0m
2026-07-10 RPA106 - Jul 10, 18:45 UTCJul 10, 20:00 UTC1h 15m
2026-07-10 RPA4449 JFK → IND Jul 10, 14:39 UTCJul 10, 16:04 UTC1h 25m
2026-07-10 RPA4449 JFK → IND Jul 10, 14:40 UTCJul 10, 16:20 UTC1h 40m
2026-07-10 RPA4350 - Jul 10, 11:25 UTCJul 10, 13:00 UTC1h 35m
2026-07-09 RPA4350 - Jul 9, 19:45 UTCJul 9, 21:35 UTC1h 50m
2026-07-09 RPA4350 ORD → IND Jul 9, 19:40 UTCJul 9, 21:32 UTC1h 52m
2026-07-09 RPA4356 JFK → ORD Jul 9, 12:55 UTCJul 9, 14:50 UTC1h 55m
2026-07-09 RPA4401 BOS → JFK Jul 9, 10:30 UTCJul 9, 11:10 UTC40m
2026-07-09 RPA4634 JFK → BOS Jul 9, 02:14 UTCJul 9, 02:56 UTC42m
2026-07-09 RPA4634 - Jul 9, 02:15 UTCJul 9, 03:00 UTC45m
2026-07-08 RPA4456 - Jul 8, 21:20 UTCJul 8, 23:00 UTC1h 40m
2026-07-08 RPA4456 IND → JFK Jul 8, 21:19 UTCJul 8, 22:42 UTC1h 23m
2026-07-08 RPA4446 JFK → IND Jul 8, 01:20 UTCJul 8, 03:00 UTC1h 40m
2026-07-08 RPA4446 JFK → IND Jul 8, 01:19 UTCJul 8, 02:59 UTC1h 40m
2026-07-07 RPA4359 ORF → JFK Jul 7, 22:10 UTCJul 7, 23:10 UTC1h 0m
2026-07-07 RPA4359 JFK → ORF Jul 7, 20:05 UTCJul 7, 21:00 UTC55m
2026-07-07 RPA4592 - Jul 7, 16:50 UTCJul 7, 18:35 UTC1h 45m
2026-07-07 RPA4592 IND → JFK Jul 7, 16:48 UTCJul 7, 18:30 UTC1h 42m
2026-07-07 RPA4701 DCA → IND Jul 7, 14:05 UTCJul 7, 15:25 UTC1h 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 N106HQ page for operator, model, and routing details .

Mode-S A01BBC frequently asked

What is Mode-S code A01BBC?
A01BBC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N106HQ.
Where is Mode-S A01BBC registered?
Mode-S code A01BBC 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 A01BBC broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A01BBC, octal 50015674, decimal 10,492,860.
What flights does A01BBC operate?
Mode-S A01BBC has broadcast 20 distinct callsigns, including RPA4422, RPA4698, RPA4338, RPA4740, RPA4720.