Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A87B8A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N646AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A87B8A
Octal
52075612
Decimal
11,041,674
Country
US
Tail
N646AE
Type
E145
No current signal · last broadcast 1h ago
Flights observed
814
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A87B8A.

Country allocation

The ICAO 24-bit address A87B8A 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
PDT6043 - 11 2026-06-25
PDT6091 - 9 2026-07-07
PDT6062 - 9 2026-07-02
PDT5859 Piedmont Airlines 9 2026-07-04
PDT5813 Piedmont Airlines 9 2026-05-22
PDT6127 Piedmont Airlines 8 2026-06-06
PDT6029 - 8 2026-06-26
PDT5958 - 8 2026-07-05
PDT5928 - 8 2026-07-03
PDT5822 - 8 2026-07-13
PDT5801 - 8 2026-07-03
PDT6134 - 7 2026-06-23
PDT6125 - 7 2026-06-15
PDT6095 - 7 2026-07-07
PDT6051 - 7 2026-07-08
PDT6048 - 7 2026-06-19
PDT6024 - 7 2026-06-26
PDT5988 - 7 2026-06-24
PDT5985 - 7 2026-07-13
PDT5902 Piedmont Airlines 7 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 PDT6109 - Jul 15, 00:00 UTCJul 15, 00:20 UTC20m
2026-07-14 PDT6025 YUL → PHL Jul 14, 20:25 UTCJul 14, 21:30 UTC1h 5m
2026-07-14 PDT6025 YUL → PHL Jul 14, 20:25 UTCJul 14, 21:31 UTC1h 6m
2026-07-14 PDT6023 - Jul 14, 17:35 UTCJul 14, 18:55 UTC1h 20m
2026-07-14 PDT6023 PHL → YUL Jul 14, 17:35 UTCJul 14, 18:56 UTC1h 21m
2026-07-14 PDT5908 - Jul 14, 15:05 UTCJul 14, 16:30 UTC1h 25m
2026-07-14 PDT5799 - Jul 14, 13:45 UTCJul 14, 14:10 UTC25m
2026-07-14 PDT5954 - Jul 14, 09:10 UTCJul 14, 09:45 UTC35m
2026-07-14 PDT5909 - Jul 14, 01:40 UTCJul 14, 02:10 UTC30m
2026-07-14 PDT5909 CLT → TYS Jul 14, 01:35 UTCJul 14, 02:13 UTC38m
2026-07-13 PDT5845 - Jul 13, 21:50 UTCJul 13, 23:00 UTC1h 10m
2026-07-13 PDT5845 MOB → CLT Jul 13, 21:45 UTCJul 13, 23:03 UTC1h 18m
2026-07-13 PDT5845 - Jul 13, 19:35 UTCJul 13, 21:00 UTC1h 25m
2026-07-13 PDT5822 ILM → CLT Jul 13, 17:15 UTCJul 13, 17:58 UTC43m
2026-07-13 PDT5822 - Jul 13, 15:40 UTCJul 13, 16:10 UTC30m
2026-07-13 PDT6016 - Jul 13, 13:05 UTCJul 13, 13:35 UTC30m
2026-07-13 PDT6016 AGS → CLT Jul 13, 13:02 UTCJul 13, 13:32 UTC30m
2026-07-13 PDT6016 - Jul 13, 11:40 UTCJul 13, 12:15 UTC35m
2026-07-13 PDT5985 - Jul 13, 09:05 UTCJul 13, 10:00 UTC55m
2026-07-13 PDT5938 - Jul 13, 03:20 UTCJul 13, 04:20 UTC1h 0m
2026-07-13 PDT6055 - Jul 13, 00:30 UTCJul 13, 01:15 UTC45m
2026-07-12 PDT6055 - Jul 12, 23:05 UTCJul 12, 23:40 UTC35m
2026-07-12 PDT5806 - Jul 12, 20:40 UTCJul 12, 21:35 UTC55m
2026-07-12 PDT5806 - Jul 12, 18:35 UTCJul 12, 19:40 UTC1h 5m
2026-07-12 PDT5946 - Jul 12, 15:15 UTCJul 12, 15:55 UTC40m
2026-07-12 PDT5946 - Jul 12, 14:01 UTCJul 12, 14:25 UTC25m
2026-07-12 PDT5917 - Jul 12, 10:30 UTCJul 12, 11:30 UTC1h 0m
2026-07-12 PDT5879 - Jul 12, 02:01 UTCJul 12, 03:01 UTC1h 0m
2026-07-11 PDT6052 - Jul 11, 22:45 UTCJul 11, 23:25 UTC40m
2026-07-11 PDT6052 - Jul 11, 21:15 UTCJul 11, 22:01 UTC45m
2026-07-11 PDT5822 - Jul 11, 19:10 UTCJul 11, 19:50 UTC40m
2026-07-11 PDT5822 - Jul 11, 17:35 UTCJul 11, 18:00 UTC25m
2026-07-11 PDT6068 - Jul 11, 15:20 UTCJul 11, 16:05 UTC45m
2026-07-11 PDT6068 EWN → CLT Jul 11, 15:15 UTCJul 11, 16:03 UTC48m
2026-07-11 PDT6068 - Jul 11, 13:40 UTCJul 11, 14:10 UTC30m
2026-07-11 PDT5870 - Jul 11, 11:30 UTCJul 11, 11:50 UTC20m
2026-07-11 PDT5870 CAE → CLT Jul 11, 11:25 UTCJul 11, 11:50 UTC25m
2026-07-11 PDT5791 - Jul 11, 04:15 UTCJul 11, 04:40 UTC25m
2026-07-11 PDT5804 - Jul 11, 02:05 UTCJul 11, 02:45 UTC40m
2026-07-11 PDT5804 - Jul 11, 00:50 UTCJul 11, 01:25 UTC35m
2026-07-10 PDT5797 - Jul 10, 23:00 UTCJul 10, 23:25 UTC25m
2026-07-10 PDT5797 GSO → CLT Jul 10, 22:56 UTCJul 10, 23:22 UTC26m
2026-07-10 PDT5797 - Jul 10, 21:35 UTCJul 10, 22:00 UTC25m
2026-07-10 PDT5810 - Jul 10, 16:25 UTCJul 10, 17:20 UTC55m
2026-07-10 PDT5872 - Jul 10, 14:20 UTCJul 10, 15:20 UTC1h 0m
2026-07-10 PDT5872 - Jul 10, 09:30 UTCJul 10, 10:40 UTC1h 10m
2026-07-10 PDT5977 - Jul 10, 01:40 UTCJul 10, 02:55 UTC1h 15m
2026-07-10 PDT5939 - Jul 10, 00:00 UTCJul 10, 00:20 UTC20m
2026-07-09 PDT5939 - Jul 9, 22:25 UTCJul 9, 22:50 UTC25m
2026-07-09 PDT6069 - Jul 9, 19:15 UTCJul 9, 20:05 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 N646AE page for operator, model, and routing details .

Mode-S A87B8A frequently asked

What is Mode-S code A87B8A?
A87B8A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N646AE.
Where is Mode-S A87B8A registered?
Mode-S code A87B8A 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 A87B8A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A87B8A, octal 52075612, decimal 11,041,674.
What flights does A87B8A operate?
Mode-S A87B8A has broadcast 20 distinct callsigns, including PDT6043, PDT6091, PDT6062, PDT5859, PDT5813.