Apparatus

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sensors Mode-S transponder

A06ABA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N126HQ · EMBRAER ERJ-170-200 (long wing) · operated by REPUBLIC AIRWAYS INC

Hex
A06ABA
Octal
50065272
Decimal
10,513,082
Country
US
Tail
N126HQ
Type
E75L
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
759
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A06ABA.

Country allocation

The ICAO 24-bit address A06ABA 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
RPA4712 Republic Airlines 14 2026-05-28
RPA4389 - 9 2026-07-20
RPA4359 - 9 2026-06-24
RPA4698 Republic Airlines 8 2026-07-23
RPA4606 - 8 2026-07-13
RPA4375 - 8 2026-06-20
RPA4745 Republic Airlines 7 2026-07-24
RPA4715 - 7 2026-07-15
RPA4678 - 7 2026-07-14
RPA4652 Republic Airlines 7 2026-07-20
RPA4530 Republic Airlines 7 2026-07-25
RPA4495 - 7 2026-06-29
RPA4727 - 6 2026-07-15
RPA4713 - 6 2026-04-13
RPA4710 - 6 2026-07-07
RPA4572 Republic Airlines 6 2026-07-01
RPA4561 - 6 2026-07-12
RPA4555 - 6 2026-07-02
RPA4488 Republic Airlines 6 2026-07-24
RPA4455 - 6 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA4517 IAH → PHL Jul 26, 21:30 UTCJul 26, 22:30 UTC1h 0m
2026-07-26 RPA4753 JFK → RDU Jul 26, 18:40 UTCJul 26, 19:55 UTC1h 15m
2026-07-26 RPA4753 JFK → RDU Jul 26, 16:35 UTCJul 26, 17:50 UTC1h 15m
2026-07-26 RPA4434 AGS → BOS Jul 26, 13:45 UTCJul 26, 14:55 UTC1h 10m
2026-07-26 RPA4439 YYZ → LGA Jul 26, 11:55 UTCJul 26, 12:25 UTC30m
2026-07-26 RPA4439 YYZ → LGA Jul 26, 11:54 UTCJul 26, 12:25 UTC31m
2026-07-26 RPA4487 PHL → DCA Jul 26, 09:45 UTCJul 26, 10:45 UTC1h 0m
2026-07-26 RPA4445 YYZ → LGA Jul 26, 02:35 UTCJul 26, 03:25 UTC50m
2026-07-25 RPA4530 ORF → LGA Jul 25, 23:45 UTCJul 26, 00:10 UTC25m
2026-07-25 RPA4530 ORF → LGA Jul 25, 22:59 UTCJul 25, 23:27 UTC28m
2026-07-25 RPA4530 ORF → LGA Jul 25, 23:00 UTCJul 26, 00:10 UTC1h 10m
2026-07-25 RPA4530 ORF → LGA Jul 25, 20:35 UTCJul 25, 21:45 UTC1h 10m
2026-07-25 RPA4665 JFK → RDU Jul 25, 16:45 UTCJul 25, 19:05 UTC2h 20m
2026-07-25 RPA4665 JFK → RDU Jul 25, 14:00 UTCJul 25, 15:55 UTC1h 55m
2026-07-25 RPA4723 IAH → LGA Jul 25, 10:15 UTCJul 25, 11:40 UTC1h 25m
2026-07-25 RPA4673 RIC → LGA Jul 25, 01:50 UTCJul 25, 03:20 UTC1h 30m
2026-07-25 RPA4673 RIC → LGA Jul 25, 01:46 UTCJul 25, 03:03 UTC1h 17m
2026-07-24 RPA4745 PHL → BUF Jul 24, 22:40 UTCJul 24, 23:55 UTC1h 15m
2026-07-24 RPA4745 PHL → BUF Jul 24, 20:15 UTCJul 24, 21:15 UTC1h 0m
2026-07-24 RPA4488 LGA → ORF Jul 24, 16:15 UTCJul 24, 18:30 UTC2h 15m
2026-07-24 RPA4488 LGA → ORF Jul 24, 13:20 UTCJul 24, 15:05 UTC1h 45m
2026-07-24 RPA4519 DCA → CMH Jul 24, 10:10 UTCJul 24, 11:05 UTC55m
2026-07-24 RPA4442 BOS → DCA Jul 24, 03:50 UTCJul 24, 04:40 UTC50m
2026-07-24 RPA4442 BOS → DCA Jul 24, 03:47 UTCJul 24, 04:39 UTC52m
2026-07-23 RPA4774 PVD → DCA Jul 23, 23:50 UTCJul 24, 02:00 UTC2h 10m
2026-07-23 RPA4774 PVD → DCA Jul 23, 21:15 UTCJul 23, 23:05 UTC1h 50m
2026-07-23 RPA4756 SDF → BOS Jul 23, 18:00 UTCJul 23, 19:50 UTC1h 50m
2026-07-23 RPA4756 SDF → BOS Jul 23, 17:57 UTCJul 23, 19:45 UTC1h 48m
2026-07-23 RPA4756 SDF → BOS Jul 23, 14:55 UTCJul 23, 16:25 UTC1h 30m
2026-07-23 RPA4688 LGA → ROA Jul 23, 11:10 UTCJul 23, 12:55 UTC1h 45m
2026-07-23 RPA4698 ILM → LGA Jul 23, 05:15 UTCJul 23, 06:40 UTC1h 25m
2026-07-23 RPA4729 CHS → DCA Jul 23, 00:00 UTCJul 23, 00:30 UTC30m
2026-07-22 RPA4729 CHS → DCA Jul 22, 22:45 UTCJul 22, 23:10 UTC25m
2026-07-22 RPA4706 BTV → DCA Jul 22, 20:05 UTCJul 22, 20:30 UTC25m
2026-07-22 RPA4706 BTV → DCA Jul 22, 18:05 UTCJul 22, 20:30 UTC2h 25m
2026-07-22 RPA4706 BTV → DCA Jul 22, 18:05 UTCJul 22, 19:49 UTC1h 44m
2026-07-22 RPA4705 STL → PHL Jul 22, 14:55 UTCJul 22, 16:45 UTC1h 50m
2026-07-22 RPA4391 ALB → DCA Jul 22, 11:10 UTCJul 22, 12:55 UTC1h 45m
2026-07-21 RPA4432 DCA → BDL Jul 21, 23:10 UTCJul 22, 00:55 UTC1h 45m
2026-07-21 RPA4523 LGA → MSP Jul 21, 16:50 UTCJul 21, 18:45 UTC1h 55m
2026-07-21 RPA4737 DCA → BOS Jul 21, 13:55 UTCJul 21, 14:50 UTC55m
2026-07-21 RPA4737 DCA → BOS Jul 21, 13:54 UTCJul 21, 14:40 UTC46m
2026-07-21 RPA4737 DCA → BOS Jul 21, 11:05 UTCJul 21, 12:00 UTC55m
2026-07-21 RPA4336 JFK → DCA Jul 21, 02:30 UTCJul 21, 03:15 UTC45m
2026-07-20 RPA4389 - Jul 20, 21:20 UTCJul 20, 22:30 UTC1h 10m
2026-07-20 RPA4389 CLE → JFK Jul 20, 21:16 UTCJul 20, 22:28 UTC1h 12m
2026-07-20 RPA4389 - Jul 20, 18:55 UTCJul 20, 20:10 UTC1h 15m
2026-07-20 RPA4366 BOS → JFK Jul 20, 16:39 UTCJul 20, 17:26 UTC47m
2026-07-20 RPA4635 ORD → LGA Jul 20, 14:40 UTCJul 20, 15:25 UTC45m
2026-07-20 RPA4635 ORD → LGA Jul 20, 12:45 UTCJul 20, 13:30 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 N126HQ page for operator, model, and routing details .

Mode-S A06ABA frequently asked

What is Mode-S code A06ABA?
A06ABA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N126HQ.
Where is Mode-S A06ABA registered?
Mode-S code A06ABA 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 A06ABA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A06ABA, octal 50065272, decimal 10,513,082.
What flights does A06ABA operate?
Mode-S A06ABA has broadcast 20 distinct callsigns, including RPA4712, RPA4389, RPA4359, RPA4698, RPA4606.