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sensors Mode-S transponder

A8F5BE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N677AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A8F5BE
Octal
52172676
Decimal
11,072,958
Country
US
Tail
N677AE
Type
E145
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
807
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A8F5BE.

Country allocation

The ICAO 24-bit address A8F5BE 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
PDT6131 Piedmont Airlines 11 2026-07-20
PDT5796 Piedmont Airlines 11 2026-07-24
PDT6121 - 10 2026-06-20
PDT6124 - 9 2026-06-17
PDT6011 - 9 2026-07-08
PDT5958 Piedmont Airlines 9 2026-04-28
PDT5878 - 9 2026-06-23
PDT5853 - 9 2026-07-22
PDT6102 - 8 2026-07-13
PDT6082 Piedmont Airlines 8 2026-06-11
PDT6028 - 8 2026-07-17
PDT5997 - 8 2026-06-21
PDT5965 Piedmont Airlines 8 2026-06-16
PDT5832 - 8 2026-07-15
PDT6128 Piedmont Airlines 7 2026-05-12
PDT6119 Piedmont Airlines 7 2026-07-23
PDT6118 Piedmont Airlines 7 2026-07-22
PDT6073 - 7 2026-07-13
PDT5963 Piedmont Airlines 7 2026-06-03
PDT5950 - 7 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT6076 PHL → RIC Jul 26, 20:40 UTCJul 26, 21:30 UTC50m
2026-07-26 PDT5835 ALB → ORD Jul 26, 18:05 UTCJul 26, 19:20 UTC1h 15m
2026-07-26 PDT5835 ALB → ORD Jul 26, 16:05 UTCJul 26, 17:10 UTC1h 5m
2026-07-26 PDT5870 YUL → PHL Jul 26, 12:45 UTCJul 26, 13:05 UTC20m
2026-07-26 PDT5791 BDL → PHL Jul 26, 03:40 UTCJul 26, 04:00 UTC20m
2026-07-26 PDT5811 PIT → PHL Jul 26, 01:25 UTCJul 26, 02:15 UTC50m
2026-07-25 PDT5811 PIT → PHL Jul 25, 23:40 UTCJul 26, 00:30 UTC50m
2026-07-25 PDT5935 GRR → PHL Jul 25, 19:00 UTCJul 25, 20:40 UTC1h 40m
2026-07-25 PDT5935 GRR → PHL Jul 25, 18:58 UTCJul 25, 20:36 UTC1h 38m
2026-07-25 PDT5935 GRR → PHL Jul 25, 16:10 UTCJul 25, 17:50 UTC1h 40m
2026-07-25 PDT5947 SDF → PHL Jul 25, 14:15 UTCJul 25, 14:50 UTC35m
2026-07-25 PDT5947 SDF → PHL Jul 25, 12:55 UTCJul 25, 13:30 UTC35m
2026-07-25 PDT6006 ALB → PHL Jul 25, 09:25 UTCJul 25, 10:10 UTC45m
2026-07-25 PDT5986 ILM → PHL Jul 25, 03:00 UTCJul 25, 03:30 UTC30m
2026-07-25 PDT6049 BGR → PHL Jul 25, 00:50 UTCJul 25, 01:40 UTC50m
2026-07-24 PDT6049 BGR → PHL Jul 24, 22:45 UTCJul 24, 23:30 UTC45m
2026-07-24 PDT5797 PWM → PHL Jul 24, 21:10 UTCJul 24, 21:35 UTC25m
2026-07-24 PDT5797 PWM → PHL Jul 24, 19:45 UTCJul 24, 20:05 UTC20m
2026-07-24 PDT5796 MSN → ORD Jul 24, 17:55 UTCJul 24, 18:25 UTC30m
2026-07-24 PDT5796 MSN → ORD Jul 24, 16:15 UTCJul 24, 16:40 UTC25m
2026-07-24 PDT5972 - Jul 24, 12:45 UTCJul 24, 14:05 UTC1h 20m
2026-07-24 PDT5972 MOB → CLT Jul 24, 12:42 UTCJul 24, 14:03 UTC1h 21m
2026-07-24 PDT5970 ALB → PHL Jul 24, 02:00 UTCJul 24, 03:10 UTC1h 10m
2026-07-24 PDT5970 ALB → PHL Jul 24, 01:55 UTCJul 24, 03:13 UTC1h 18m
2026-07-23 PDT6119 GSP → PHL Jul 23, 23:00 UTCJul 24, 00:15 UTC1h 15m
2026-07-23 PDT6119 GSP → PHL Jul 23, 22:42 UTCJul 24, 00:15 UTC1h 33m
2026-07-23 PDT6119 GSP → PHL Jul 23, 19:45 UTCJul 23, 21:00 UTC1h 15m
2026-07-23 PDT5822 - Jul 23, 17:25 UTCJul 23, 18:05 UTC40m
2026-07-23 PDT5822 ILM → CLT Jul 23, 17:21 UTCJul 23, 18:01 UTC40m
2026-07-23 PDT5822 - Jul 23, 15:50 UTCJul 23, 16:25 UTC35m
2026-07-23 PDT5962 - Jul 23, 13:20 UTCJul 23, 14:15 UTC55m
2026-07-23 PDT5962 ROA → CLT Jul 23, 13:19 UTCJul 23, 13:59 UTC40m
2026-07-23 PDT5882 CAE → PHL Jul 23, 01:45 UTCJul 23, 02:25 UTC40m
2026-07-22 PDT5853 - Jul 22, 17:25 UTCJul 22, 18:05 UTC40m
2026-07-22 PDT5853 - Jul 22, 16:00 UTCJul 22, 16:30 UTC30m
2026-07-22 PDT6080 PHL → GSO Jul 22, 13:55 UTCJul 22, 14:55 UTC1h 0m
2026-07-22 PDT6080 PHL → GSO Jul 22, 13:49 UTCJul 22, 14:53 UTC1h 4m
2026-07-22 PDT6080 PHL → GSO Jul 22, 11:50 UTCJul 22, 12:45 UTC55m
2026-07-22 PDT6118 PHL → YQB Jul 22, 03:45 UTCJul 22, 05:10 UTC1h 25m
2026-07-22 PDT6118 PHL → YQB Jul 22, 03:42 UTCJul 22, 05:10 UTC1h 28m
2026-07-22 PDT6118 PHL → YQB Jul 22, 01:45 UTCJul 22, 03:00 UTC1h 15m
2026-07-21 PDT6112 YYZ → PHL Jul 21, 20:45 UTCJul 21, 21:05 UTC20m
2026-07-21 PDT6112 YYZ → PHL Jul 21, 20:38 UTCJul 21, 21:02 UTC24m
2026-07-21 PDT6112 YYZ → PHL Jul 21, 19:20 UTCJul 21, 19:45 UTC25m
2026-07-21 PDT5853 - Jul 21, 17:25 UTCJul 21, 18:05 UTC40m
2026-07-21 PDT5853 - Jul 21, 15:55 UTCJul 21, 16:25 UTC30m
2026-07-21 PDT5793 CLT → LYH Jul 21, 13:05 UTCJul 21, 13:25 UTC20m
2026-07-21 PDT5793 CLT → LYH Jul 21, 11:50 UTCJul 21, 12:15 UTC25m
2026-07-21 PDT5804 MHT → PHL Jul 21, 04:00 UTCJul 21, 04:40 UTC40m
2026-07-21 PDT5804 MHT → PHL Jul 21, 02:25 UTCJul 21, 03:10 UTC45m

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 N677AE page for operator, model, and routing details .

Mode-S A8F5BE frequently asked

What is Mode-S code A8F5BE?
A8F5BE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N677AE.
Where is Mode-S A8F5BE registered?
Mode-S code A8F5BE 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 A8F5BE 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 A8F5BE, octal 52172676, decimal 11,072,958.
What flights does A8F5BE operate?
Mode-S A8F5BE has broadcast 20 distinct callsigns, including PDT6131, PDT5796, PDT6121, PDT6124, PDT6011.