Apparatus

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sensors Mode-S transponder

AB1D06

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N815MD · EMBRAER ERJ-170-100 · operated by UMB BANK NA TRUSTEE

Hex
AB1D06
Octal
52616406
Decimal
11,214,086
Country
US
Tail
N815MD
Type
E170
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
615
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AB1D06.

Country allocation

The ICAO 24-bit address AB1D06 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
RPA5742 - 22 2026-07-12
RPA5637 - 19 2026-07-05
RPA5642 Republic Airlines 18 2026-07-23
RPA5822 Republic Airlines 15 2026-07-26
RPA5664 Republic Airlines 15 2026-07-23
RPA5662 Republic Airlines 15 2026-07-26
RPA5705 - 14 2026-07-14
RPA5841 - 13 2026-07-16
RPA5828 Republic Airlines 13 2026-05-27
RPA5646 Republic Airlines 13 2026-07-24
RPA5794 - 12 2026-07-13
RPA5772 - 12 2026-07-16
RPA5770 - 12 2026-07-16
RPA5643 Republic Airlines 12 2026-07-20
RPA5694 - 11 2026-07-13
RPA5651 Republic Airlines 11 2026-04-26
RPA5817 - 10 2026-07-14
RPA5661 - 10 2026-07-22
RPA5638 Republic Airlines 10 2026-05-06
RPA5806 Republic Airlines 9 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA5822 CMH → LGA Jul 26, 20:35 UTCJul 26, 21:25 UTC50m
2026-07-26 RPA5822 CMH → LGA Jul 26, 19:05 UTCJul 26, 19:40 UTC35m
2026-07-26 RPA5662 DCA → LGA Jul 26, 17:00 UTCJul 26, 17:55 UTC55m
2026-07-26 RPA5662 DCA → LGA Jul 26, 13:55 UTCJul 26, 14:30 UTC35m
2026-07-26 RPA5599 BOS → CVG Jul 26, 11:25 UTCJul 26, 12:45 UTC1h 20m
2026-07-25 RPA5818 BOS → ORD Jul 25, 22:20 UTCJul 25, 23:50 UTC1h 30m
2026-07-25 RPA5673 BOS → CLE Jul 25, 18:15 UTCJul 25, 20:30 UTC2h 15m
2026-07-25 RPA5673 BOS → CLE Jul 25, 18:10 UTCJul 25, 20:28 UTC2h 18m
2026-07-25 RPA5673 BOS → CLE Jul 25, 14:40 UTCJul 25, 16:50 UTC2h 10m
2026-07-25 RPA5806 BOS → LGA Jul 25, 11:15 UTCJul 25, 12:45 UTC1h 30m
2026-07-25 RPA5659 PHL → BOS Jul 25, 01:25 UTCJul 25, 02:55 UTC1h 30m
2026-07-24 RPA5646 BOS → CMH Jul 24, 22:00 UTCJul 24, 23:45 UTC1h 45m
2026-07-24 RPA5646 BOS → CMH Jul 24, 19:05 UTCJul 24, 20:40 UTC1h 35m
2026-07-24 RPA5623 LGA → PNS Jul 24, 16:00 UTCJul 24, 17:45 UTC1h 45m
2026-07-24 RPA5623 LGA → PNS Jul 24, 15:58 UTCJul 24, 17:38 UTC1h 40m
2026-07-24 RPA5623 LGA → PNS Jul 24, 13:10 UTCJul 24, 14:55 UTC1h 45m
2026-07-24 RPA5771 IND → BOS Jul 24, 10:25 UTCJul 24, 11:55 UTC1h 30m
2026-07-23 RPA5635 LGA → IND Jul 23, 22:05 UTCJul 23, 23:55 UTC1h 50m
2026-07-23 RPA5642 BOS → IND Jul 23, 19:00 UTCJul 23, 20:30 UTC1h 30m
2026-07-23 RPA5642 BOS → IND Jul 23, 16:10 UTCJul 23, 18:00 UTC1h 50m
2026-07-23 RPA5664 MKE → BOS Jul 23, 13:45 UTCJul 23, 14:30 UTC45m
2026-07-23 RPA5664 MKE → BOS Jul 23, 11:35 UTCJul 23, 12:35 UTC1h 0m
2026-07-23 RPA5760 CMH → LGA Jul 23, 00:30 UTCJul 23, 01:30 UTC1h 0m
2026-07-23 RPA5760 CMH → LGA Jul 23, 00:29 UTCJul 23, 01:38 UTC1h 9m
2026-07-22 RPA5760 CMH → LGA Jul 22, 21:55 UTCJul 22, 23:00 UTC1h 5m
2026-07-22 RPA5661 - Jul 22, 19:35 UTCJul 22, 20:55 UTC1h 20m
2026-07-22 RPA5661 GRR → LGA Jul 22, 19:30 UTCJul 22, 20:54 UTC1h 24m
2026-07-22 RPA5661 LGA → GRR Jul 22, 17:00 UTCJul 22, 18:40 UTC1h 40m
2026-07-22 RPA5625 - Jul 22, 11:35 UTCJul 22, 13:15 UTC1h 40m
2026-07-21 RPA5723 LGA → MKE Jul 21, 15:25 UTCJul 21, 17:20 UTC1h 55m
2026-07-21 RPA5806 BOS → LGA Jul 21, 12:05 UTCJul 21, 12:20 UTC15m
2026-07-21 RPA5806 BOS → LGA Jul 21, 10:20 UTCJul 21, 12:20 UTC2h 0m
2026-07-21 RPA5806 BOS → LGA Jul 21, 10:17 UTCJul 21, 11:50 UTC1h 33m
2026-07-21 RPA5659 LGA → GRR Jul 21, 01:25 UTCJul 21, 03:00 UTC1h 35m
2026-07-20 RPA5646 - Jul 20, 22:40 UTCJul 21, 00:25 UTC1h 45m
2026-07-20 RPA5646 IND → LGA Jul 20, 22:40 UTCJul 21, 00:18 UTC1h 38m
2026-07-20 RPA5646 LGA → IND Jul 20, 19:00 UTCJul 20, 20:35 UTC1h 35m
2026-07-20 RPA5643 BOS → PIT Jul 20, 16:05 UTCJul 20, 17:40 UTC1h 35m
2026-07-20 RPA5643 BOS → PIT Jul 20, 16:02 UTCJul 20, 17:41 UTC1h 39m
2026-07-20 RPA5643 BOS → PIT Jul 20, 13:10 UTCJul 20, 14:50 UTC1h 40m
2026-07-20 RPA5700 - Jul 20, 10:15 UTCJul 20, 11:30 UTC1h 15m
2026-07-20 RPA5658 JFK → CMH Jul 20, 02:44 UTCJul 20, 03:55 UTC1h 11m
2026-07-20 RPA5658 JFK → CMH Jul 20, 02:45 UTCJul 20, 04:00 UTC1h 15m
2026-07-19 RPA5650 - Jul 19, 23:15 UTCJul 20, 00:40 UTC1h 25m
2026-07-19 RPA5650 CMH → JFK Jul 19, 23:15 UTCJul 20, 00:33 UTC1h 18m
2026-07-19 RPA815 - Jul 19, 16:55 UTCJul 19, 17:30 UTC35m
2026-07-19 RPA5812 - Jul 19, 12:35 UTCJul 19, 13:10 UTC35m
2026-07-19 RPA5821 LGA → DCA Jul 19, 02:05 UTCJul 19, 02:40 UTC35m
2026-07-19 RPA5821 LGA → DCA Jul 19, 02:05 UTCJul 19, 02:33 UTC28m
2026-07-18 RPA5855 - Jul 18, 22:55 UTCJul 18, 23:45 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 N815MD page for operator, model, and routing details .

Mode-S AB1D06 frequently asked

What is Mode-S code AB1D06?
AB1D06 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N815MD.
Where is Mode-S AB1D06 registered?
Mode-S code AB1D06 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 AB1D06 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB1D06, octal 52616406, decimal 11,214,086.
What flights does AB1D06 operate?
Mode-S AB1D06 has broadcast 20 distinct callsigns, including RPA5742, RPA5637, RPA5642, RPA5822, RPA5664.