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sensors Mode-S transponder

A86540

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N640AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A86540
Octal
52062500
Decimal
11,035,968
Country
US
Tail
N640AE
Type
E145
No current signal · last broadcast Jul 24, 21:20 UTC
Flights observed
847
Distinct callsigns
20
Country
US
Last broadcast
Jul 24, 21:20 UTC

Last known position

Most recent position reported by Mode-S A86540.

Country allocation

The ICAO 24-bit address A86540 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
PDT6053 - 13 2026-06-29
PDT6128 - 12 2026-07-18
PDT6054 - 11 2026-07-05
PDT6125 - 10 2026-07-16
PDT6043 Piedmont Airlines 10 2026-06-07
PDT5910 - 10 2026-07-03
PDT5840 Piedmont Airlines 10 2026-07-23
PDT5816 - 10 2026-07-08
PDT5806 - 10 2026-07-03
PDT6077 - 9 2026-07-19
PDT6062 Piedmont Airlines 9 2026-05-31
PDT6017 Piedmont Airlines 9 2026-07-22
PDT5950 Piedmont Airlines 7 2026-05-01
PDT5831 Piedmont Airlines 7 2026-07-20
PDT5823 Piedmont Airlines 7 2026-07-22
PDT5805 - 7 2026-06-28
PDT6041 - 6 2026-07-08
PDT5999 Piedmont Airlines 6 2026-05-20
PDT5988 Piedmont Airlines 6 2026-06-06
PDT5974 Piedmont Airlines 6 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 PDT5974 PHL → SYR Jul 24, 20:35 UTCJul 24, 21:20 UTC45m
2026-07-24 PDT5974 PHL → SYR Jul 24, 20:31 UTCJul 24, 21:18 UTC47m
2026-07-24 PDT5974 PHL → SYR Jul 24, 18:40 UTCJul 24, 19:25 UTC45m
2026-07-24 PDT6121 HSV → CLT Jul 24, 16:35 UTCJul 24, 17:20 UTC45m
2026-07-24 PDT6121 HSV → CLT Jul 24, 16:31 UTCJul 24, 17:18 UTC47m
2026-07-24 PDT6121 HSV → CLT Jul 24, 15:10 UTCJul 24, 15:55 UTC45m
2026-07-24 PDT5877 SDF → PHL Jul 24, 12:10 UTCJul 24, 13:00 UTC50m
2026-07-24 PDT5877 SDF → PHL Jul 24, 02:25 UTCJul 24, 03:05 UTC40m
2026-07-24 PDT5877 SDF → PHL Jul 24, 02:23 UTCJul 24, 03:07 UTC44m
2026-07-24 PDT6092 ORD → MSN Jul 24, 00:50 UTCJul 24, 01:35 UTC45m
2026-07-23 PDT6092 ORD → MSN Jul 23, 23:05 UTCJul 23, 23:55 UTC50m
2026-07-23 PDT5840 RIC → PHL Jul 23, 19:55 UTCJul 23, 21:05 UTC1h 10m
2026-07-23 PDT5840 RIC → PHL Jul 23, 19:51 UTCJul 23, 21:01 UTC1h 10m
2026-07-23 PDT5840 RIC → PHL Jul 23, 17:45 UTCJul 23, 18:35 UTC50m
2026-07-23 PDT5928 ROA → PHL Jul 23, 14:10 UTCJul 23, 15:05 UTC55m
2026-07-23 PDT5943 - Jul 23, 11:15 UTCJul 23, 12:00 UTC45m
2026-07-23 PDT5867 CMH → ORD Jul 23, 03:10 UTCJul 23, 04:05 UTC55m
2026-07-23 PDT5867 CMH → ORD Jul 23, 01:40 UTCJul 23, 02:35 UTC55m
2026-07-22 PDT5823 GSO → PHL Jul 22, 23:10 UTCJul 22, 23:45 UTC35m
2026-07-22 PDT5823 GSO → PHL Jul 22, 21:40 UTCJul 22, 22:05 UTC25m
2026-07-22 PDT6017 BUF → PHL Jul 22, 19:40 UTCJul 22, 20:15 UTC35m
2026-07-22 PDT6017 BUF → PHL Jul 22, 19:39 UTCJul 22, 20:14 UTC35m
2026-07-22 PDT6017 BUF → PHL Jul 22, 15:25 UTCJul 22, 15:50 UTC25m
2026-07-21 PDT6098 PHL → MDT Jul 21, 11:00 UTCJul 21, 11:50 UTC50m
2026-07-21 PDT6098 PHL → MDT Jul 21, 10:56 UTCJul 21, 11:43 UTC47m
2026-07-21 PDT6071 MDT → BOS Jul 21, 05:10 UTCJul 21, 05:40 UTC30m
2026-07-20 PDT5831 CLT → TRI Jul 20, 20:20 UTCJul 20, 20:55 UTC35m
2026-07-20 PDT5831 CLT → TRI Jul 20, 18:40 UTCJul 20, 19:15 UTC35m
2026-07-20 PDT5954 MDT → PHL Jul 20, 09:15 UTCJul 20, 09:45 UTC30m
2026-07-20 PDT5909 - Jul 20, 02:45 UTCJul 20, 03:15 UTC30m
2026-07-20 PDT5825 PHL → GSP Jul 20, 00:25 UTCJul 20, 01:05 UTC40m
2026-07-20 PDT5825 PHL → GSP Jul 20, 00:24 UTCJul 20, 01:01 UTC37m
2026-07-19 PDT5825 PHL → GSP Jul 19, 23:00 UTCJul 19, 23:35 UTC35m
2026-07-19 PDT6077 - Jul 19, 19:05 UTCJul 19, 19:40 UTC35m
2026-07-19 PDT6077 FLO → CLT Jul 19, 18:56 UTCJul 19, 19:40 UTC44m
2026-07-19 PDT6077 - Jul 19, 17:25 UTCJul 19, 17:40 UTC15m
2026-07-19 PDT6068 - Jul 19, 15:10 UTCJul 19, 15:55 UTC45m
2026-07-19 PDT6068 - Jul 19, 13:25 UTCJul 19, 13:55 UTC30m
2026-07-19 PDT5975 - Jul 19, 10:25 UTCJul 19, 11:00 UTC35m
2026-07-19 PDT5913 - Jul 19, 04:40 UTCJul 19, 05:20 UTC40m
2026-07-18 PDT6128 - Jul 18, 21:00 UTCJul 18, 21:35 UTC35m
2026-07-18 PDT6128 CHO → CLT Jul 18, 20:53 UTCJul 18, 21:35 UTC42m
2026-07-18 PDT6128 - Jul 18, 19:25 UTCJul 18, 20:05 UTC40m
2026-07-18 PDT5786 - Jul 18, 16:50 UTCJul 18, 18:00 UTC1h 10m
2026-07-18 PDT5829 - Jul 18, 15:15 UTCJul 18, 15:35 UTC20m
2026-07-18 PDT5887 YYZ → PHL Jul 18, 12:25 UTCJul 18, 13:25 UTC1h 0m
2026-07-18 PDT5887 YYZ → PHL Jul 18, 12:25 UTCJul 18, 13:28 UTC1h 3m
2026-07-18 PDT5864 - Jul 18, 01:34 UTCJul 18, 02:35 UTC1h 0m
2026-07-17 PDT5840 - Jul 17, 20:25 UTCJul 17, 21:39 UTC1h 15m
2026-07-17 PDT5840 PHL → MHT Jul 17, 18:00 UTCJul 17, 19:05 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 N640AE page for operator, model, and routing details .

Mode-S A86540 frequently asked

What is Mode-S code A86540?
A86540 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N640AE.
Where is Mode-S A86540 registered?
Mode-S code A86540 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 A86540 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A86540, octal 52062500, decimal 11,035,968.
What flights does A86540 operate?
Mode-S A86540 has broadcast 20 distinct callsigns, including PDT6053, PDT6128, PDT6054, PDT6125, PDT6043.