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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 Jul 26, 22:20 UTC
Flights observed
896
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:20 UTC

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
PDT6048 - 9 2026-07-16
PDT5859 Piedmont Airlines 9 2026-07-04
PDT5813 Piedmont Airlines 9 2026-05-22
PDT6127 Piedmont Airlines 8 2026-06-06
PDT6116 - 8 2026-07-17
PDT6029 - 8 2026-06-26
PDT5958 - 8 2026-07-05
PDT5946 Piedmont Airlines 8 2026-07-23
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
PDT6077 - 7 2026-07-15
PDT6051 - 7 2026-07-08
PDT6024 - 7 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5895 CHO → PHL Jul 26, 21:45 UTCJul 26, 22:20 UTC35m
2026-07-26 PDT5895 CHO → PHL Jul 26, 19:55 UTCJul 26, 20:35 UTC40m
2026-07-26 PDT6011 YUL → PHL Jul 26, 17:15 UTCJul 26, 18:30 UTC1h 15m
2026-07-26 PDT6011 YUL → PHL Jul 26, 14:55 UTCJul 26, 16:00 UTC1h 5m
2026-07-26 PDT5841 CLT → GSP Jul 26, 12:30 UTCJul 26, 12:50 UTC20m
2026-07-25 PDT5989 DTW → PHL Jul 25, 21:35 UTCJul 25, 22:40 UTC1h 5m
2026-07-25 PDT5989 DTW → PHL Jul 25, 21:33 UTCJul 25, 22:39 UTC1h 6m
2026-07-25 PDT6053 CAE → CLT Jul 25, 18:55 UTCJul 25, 19:40 UTC45m
2026-07-25 PDT6053 CAE → CLT Jul 25, 18:49 UTCJul 25, 19:28 UTC39m
2026-07-25 PDT6053 CAE → CLT Jul 25, 17:30 UTCJul 25, 18:00 UTC30m
2026-07-25 PDT6086 FWA → CLT Jul 25, 14:35 UTCJul 25, 16:10 UTC1h 35m
2026-07-25 PDT9975 CLT → ALO Jul 25, 12:10 UTCJul 25, 13:50 UTC1h 40m
2026-07-24 PDT5831 CLT → TRI Jul 24, 20:55 UTCJul 24, 21:30 UTC35m
2026-07-24 PDT5831 CLT → TRI Jul 24, 20:50 UTCJul 24, 21:31 UTC41m
2026-07-24 PDT5831 CLT → TRI Jul 24, 19:10 UTCJul 24, 19:45 UTC35m
2026-07-24 PDT5838 PHL → RDU Jul 24, 15:55 UTCJul 24, 17:25 UTC1h 30m
2026-07-24 PDT5838 PHL → RDU Jul 24, 15:48 UTCJul 24, 17:15 UTC1h 27m
2026-07-24 PDT5838 PHL → RDU Jul 24, 13:40 UTCJul 24, 15:05 UTC1h 25m
2026-07-24 PDT5981 CAE → PHL Jul 24, 10:45 UTCJul 24, 11:10 UTC25m
2026-07-24 PDT5991 CMH → PHL Jul 24, 03:30 UTCJul 24, 04:00 UTC30m
2026-07-24 PDT5927 PHL → SYR Jul 24, 00:00 UTCJul 24, 01:10 UTC1h 10m
2026-07-23 PDT5927 PHL → SYR Jul 23, 23:58 UTCJul 24, 01:06 UTC1h 8m
2026-07-23 PDT5927 PHL → SYR Jul 23, 22:10 UTCJul 23, 23:10 UTC1h 0m
2026-07-23 PDT5868 BUF → PHL Jul 23, 20:00 UTCJul 23, 21:00 UTC1h 0m
2026-07-23 PDT5868 BUF → PHL Jul 23, 19:55 UTCJul 23, 20:57 UTC1h 2m
2026-07-23 PDT5868 BUF → PHL Jul 23, 18:05 UTCJul 23, 18:55 UTC50m
2026-07-23 PDT5946 ILM → PHL Jul 23, 16:20 UTCJul 23, 16:50 UTC30m
2026-07-23 PDT5946 ILM → PHL Jul 23, 15:00 UTCJul 23, 15:25 UTC25m
2026-07-23 PDT5975 LYH → CLT Jul 23, 12:50 UTCJul 23, 13:35 UTC45m
2026-07-23 PDT5975 LYH → CLT Jul 23, 10:40 UTCJul 23, 11:35 UTC55m
2026-07-23 PDT5913 PHL → SYR Jul 23, 04:15 UTCJul 23, 04:45 UTC30m
2026-07-23 PDT5883 SBY → CLT Jul 23, 01:45 UTCJul 23, 02:15 UTC30m
2026-07-23 PDT5883 SBY → CLT Jul 23, 00:05 UTCJul 23, 00:15 UTC10m
2026-07-22 PDT5851 SYR → BOS Jul 22, 22:15 UTCJul 22, 22:55 UTC40m
2026-07-22 PDT5851 SYR → BOS Jul 22, 20:50 UTCJul 22, 21:20 UTC30m
2026-07-22 PDT5789 GSO → PHL Jul 22, 19:05 UTCJul 22, 19:25 UTC20m
2026-07-22 PDT5789 GSO → PHL Jul 22, 18:58 UTCJul 22, 19:16 UTC18m
2026-07-22 PDT5789 GSO → PHL Jul 22, 17:35 UTCJul 22, 18:00 UTC25m
2026-07-22 PDT5786 GSP → PHL Jul 22, 14:55 UTCJul 22, 16:10 UTC1h 15m
2026-07-22 PDT5786 GSP → PHL Jul 22, 14:52 UTCJul 22, 16:08 UTC1h 16m
2026-07-22 PDT5829 CLT → PGV Jul 22, 13:50 UTCJul 22, 14:10 UTC20m
2026-07-20 PDT5887 YYZ → PHL Jul 20, 12:20 UTCJul 20, 13:30 UTC1h 10m
2026-07-20 PDT5919 PHL → YYZ Jul 20, 03:05 UTCJul 20, 04:10 UTC1h 5m
2026-07-19 PDT5862 MHT → PHL Jul 19, 23:55 UTCJul 20, 00:55 UTC1h 0m
2026-07-19 PDT5862 MHT → PHL Jul 19, 22:00 UTCJul 19, 23:05 UTC1h 5m
2026-07-19 PDT5843 TYS → PHL Jul 19, 19:20 UTCJul 19, 19:55 UTC35m
2026-07-19 PDT5843 TYS → PHL Jul 19, 19:15 UTCJul 19, 19:53 UTC38m
2026-07-19 PDT5843 TYS → PHL Jul 19, 17:30 UTCJul 19, 18:15 UTC45m
2026-07-19 PDT5847 BOS → ROC Jul 19, 15:35 UTCJul 19, 16:30 UTC55m
2026-07-19 PDT5847 BOS → ROC Jul 19, 13:40 UTCJul 19, 14:45 UTC1h 5m

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 Jul 26, 22:20 UTC.
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, PDT6048, PDT5859.