Apparatus

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sensors Mode-S transponder

AB282B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N818MD · EMBRAER ERJ-170-100 · operated by UMB BANK NA TRUSTEE

Hex
AB282B
Octal
52624053
Decimal
11,216,939
Country
US
Tail
N818MD
Type
E170
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
642
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S AB282B.

Country allocation

The ICAO 24-bit address AB282B 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
RPA5642 Republic Airlines 26 2026-07-24
RPA5590 Republic Airlines 22 2026-07-26
RPA5686 Republic Airlines 21 2026-07-22
RPA5830 Republic Airlines 19 2026-07-26
RPA5817 Republic Airlines 19 2026-07-26
RPA5664 Republic Airlines 19 2026-07-24
RPA5618 Republic Airlines 17 2026-07-26
RPA5822 Republic Airlines 16 2026-07-22
RPA5717 - 16 2026-06-29
RPA5715 Republic Airlines 15 2026-06-05
RPA5694 - 14 2026-07-16
RPA5637 - 14 2026-06-29
RPA5635 Republic Airlines 14 2026-07-24
RPA5818 - 13 2026-07-13
RPA5643 Republic Airlines 12 2026-07-19
RPA5599 - 11 2026-07-14
RPA5797 Republic Airlines 10 2026-07-18
RPA5742 Republic Airlines 10 2026-07-20
RPA5705 - 10 2026-07-17
RPA5662 - 10 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA5590 LGA → BOS Jul 26, 22:20 UTCJul 26, 22:45 UTC25m
2026-07-26 RPA5590 LGA → BOS Jul 26, 20:40 UTCJul 26, 21:25 UTC45m
2026-07-26 RPA5830 CMH → BOS Jul 26, 18:22 UTCJul 26, 19:07 UTC45m
2026-07-26 RPA5830 CMH → BOS Jul 26, 18:25 UTCJul 26, 19:10 UTC45m
2026-07-26 RPA5817 LGA → DCA Jul 26, 16:25 UTCJul 26, 17:10 UTC45m
2026-07-26 RPA5618 CMH → BOS Jul 26, 13:20 UTCJul 26, 14:55 UTC1h 35m
2026-07-26 RPA5771 IND → BOS Jul 26, 10:25 UTCJul 26, 12:05 UTC1h 40m
2026-07-24 RPA5635 CLT → JFK Jul 24, 22:05 UTCJul 24, 23:40 UTC1h 35m
2026-07-24 RPA5642 BOS → IND Jul 24, 18:55 UTCJul 24, 20:25 UTC1h 30m
2026-07-24 RPA5642 BOS → IND Jul 24, 18:50 UTCJul 24, 20:21 UTC1h 31m
2026-07-24 RPA5642 BOS → IND Jul 24, 15:55 UTCJul 24, 17:30 UTC1h 35m
2026-07-24 RPA5664 MKE → BOS Jul 24, 13:50 UTCJul 24, 14:40 UTC50m
2026-07-24 RPA5664 MKE → BOS Jul 24, 13:48 UTCJul 24, 14:35 UTC47m
2026-07-24 RPA5664 MKE → BOS Jul 24, 11:30 UTCJul 24, 12:15 UTC45m
2026-07-24 RPA5760 CMH → LGA Jul 24, 00:05 UTCJul 24, 00:55 UTC50m
2026-07-23 RPA5760 CMH → LGA Jul 23, 21:50 UTCJul 23, 22:45 UTC55m
2026-07-23 RPA5723 CLT → LGA Jul 23, 18:25 UTCJul 23, 20:05 UTC1h 40m
2026-07-23 RPA5723 CLT → LGA Jul 23, 15:30 UTCJul 23, 17:20 UTC1h 50m
2026-07-23 RPA5847 DCA → BOS Jul 23, 12:05 UTCJul 23, 13:50 UTC1h 45m
2026-07-22 RPA5853 RDU → LGA Jul 22, 22:52 UTCJul 23, 00:57 UTC2h 5m
2026-07-22 RPA5853 RDU → LGA Jul 22, 22:55 UTCJul 23, 01:10 UTC2h 15m
2026-07-22 RPA5822 CMH → LGA Jul 22, 19:50 UTCJul 22, 20:35 UTC45m
2026-07-22 RPA5822 CMH → LGA Jul 22, 18:05 UTCJul 22, 18:35 UTC30m
2026-07-22 RPA5686 JFK → JAX Jul 22, 15:15 UTCJul 22, 16:30 UTC1h 15m
2026-07-21 RPA5899 BOS → ORF Jul 21, 19:55 UTCJul 21, 21:20 UTC1h 25m
2026-07-21 RPA5697 - Jul 21, 15:10 UTCJul 21, 16:30 UTC1h 20m
2026-07-21 RPA5697 RIC → BOS Jul 21, 15:08 UTCJul 21, 16:26 UTC1h 18m
2026-07-21 RPA5897 BOS → CMH Jul 21, 13:30 UTCJul 21, 14:15 UTC45m
2026-07-20 RPA5792 - Jul 20, 23:15 UTCJul 21, 00:10 UTC54m
2026-07-20 RPA5833 JFK → PIT Jul 20, 20:05 UTCJul 20, 21:40 UTC1h 35m
2026-07-20 RPA5833 JFK → PIT Jul 20, 17:15 UTCJul 20, 18:40 UTC1h 25m
2026-07-20 RPA5742 DCA → BOS Jul 20, 15:35 UTCJul 20, 16:10 UTC35m
2026-07-20 RPA5742 DCA → BOS Jul 20, 13:50 UTCJul 20, 14:40 UTC50m
2026-07-20 RPA5806 BOS → LGA Jul 20, 10:10 UTCJul 20, 11:35 UTC1h 25m
2026-07-20 RPA5659 LGA → GRR Jul 20, 02:30 UTCJul 20, 04:00 UTC1h 30m
2026-07-19 RPA5646 - Jul 19, 23:00 UTCJul 20, 00:45 UTC1h 45m
2026-07-19 RPA5646 IND → LGA Jul 19, 22:56 UTCJul 20, 00:54 UTC1h 58m
2026-07-19 RPA5646 LGA → IND Jul 19, 20:10 UTCJul 19, 21:50 UTC1h 40m
2026-07-19 RPA5643 BOS → PIT Jul 19, 17:15 UTCJul 19, 19:05 UTC1h 50m
2026-07-19 RPA5643 BOS → PIT Jul 19, 13:00 UTCJul 19, 14:50 UTC1h 50m
2026-07-18 RPA5797 JAX → BOS Jul 18, 11:45 UTCJul 18, 13:40 UTC1h 55m
2026-07-18 RPA5791 - Jul 18, 00:45 UTCJul 18, 02:35 UTC1h 50m
2026-07-17 RPA5675 - Jul 17, 21:50 UTCJul 17, 23:00 UTC1h 10m
2026-07-17 RPA5675 LGA → CMH Jul 17, 19:15 UTCJul 17, 20:25 UTC1h 10m
2026-07-17 RPA5643 - Jul 17, 15:49 UTCJul 17, 17:30 UTC1h 40m
2026-07-17 RPA5643 LGA → SDF Jul 17, 13:15 UTCJul 17, 14:55 UTC1h 40m
2026-07-17 RPA5799 LGA → BOS Jul 17, 10:40 UTCJul 17, 11:39 UTC1h 0m
2026-07-17 RPA5705 - Jul 17, 02:15 UTCJul 17, 02:59 UTC45m
2026-07-16 RPA5825 - Jul 16, 22:59 UTCJul 17, 00:30 UTC1h 30m
2026-07-16 RPA5825 LGA → MKE Jul 16, 19:55 UTCJul 16, 21:50 UTC1h 55m

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 N818MD page for operator, model, and routing details .

Mode-S AB282B frequently asked

What is Mode-S code AB282B?
AB282B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N818MD.
Where is Mode-S AB282B registered?
Mode-S code AB282B 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 AB282B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB282B, octal 52624053, decimal 11,216,939.
What flights does AB282B operate?
Mode-S AB282B has broadcast 20 distinct callsigns, including RPA5642, RPA5590, RPA5686, RPA5830, RPA5817.