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sensors Mode-S transponder

A906F3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N681AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A906F3
Octal
52203363
Decimal
11,077,363
Country
US
Tail
N681AE
Type
E145
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
941
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S A906F3.

Country allocation

The ICAO 24-bit address A906F3 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
PDT6126 - 17 2026-07-18
PDT6116 Piedmont Airlines 12 2026-07-25
PDT6036 Piedmont Airlines 11 2026-06-03
PDT5817 - 11 2026-07-12
PDT6046 - 10 2026-07-06
PDT6038 - 10 2026-07-22
PDT5852 - 10 2026-07-13
PDT6121 Piedmont Airlines 9 2026-07-19
PDT5988 Piedmont Airlines 9 2026-06-10
PDT5902 - 9 2026-06-23
PDT5848 Piedmont Airlines 9 2026-06-30
PDT5807 Piedmont Airlines 9 2026-07-26
PDT6127 - 8 2026-06-29
PDT6083 - 8 2026-07-01
PDT6081 - 8 2026-07-01
PDT6056 Piedmont Airlines 8 2026-06-13
PDT5939 Piedmont Airlines 8 2026-05-16
PDT5861 - 8 2026-07-08
PDT5832 - 8 2026-06-15
PDT6129 - 7 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5807 CLT → MGM Jul 26, 20:40 UTCJul 26, 21:35 UTC55m
2026-07-26 PDT5819 BGR → PHL Jul 26, 18:25 UTCJul 26, 18:55 UTC30m
2026-07-26 PDT5819 BGR → PHL Jul 26, 15:40 UTCJul 26, 16:00 UTC20m
2026-07-26 PDT6048 CLT → EVV Jul 26, 12:55 UTCJul 26, 13:15 UTC20m
2026-07-26 PDT6048 CLT → EVV Jul 26, 11:35 UTCJul 26, 11:55 UTC20m
2026-07-26 PDT5954 MDT → PHL Jul 26, 09:10 UTCJul 26, 09:45 UTC35m
2026-07-26 PDT5954 MDT → PHL Jul 26, 09:05 UTCJul 26, 09:43 UTC38m
2026-07-26 PDT5909 ERI → CLT Jul 26, 01:20 UTCJul 26, 01:55 UTC35m
2026-07-26 PDT5909 ERI → CLT Jul 26, 01:18 UTCJul 26, 01:53 UTC35m
2026-07-25 PDT6116 PHL → YYZ Jul 25, 22:40 UTCJul 25, 23:15 UTC35m
2026-07-25 PDT6116 PHL → YYZ Jul 25, 21:00 UTCJul 25, 21:25 UTC25m
2026-07-25 PDT5789 GSO → PHL Jul 25, 18:55 UTCJul 25, 19:25 UTC30m
2026-07-25 PDT5789 GSO → PHL Jul 25, 17:25 UTCJul 25, 17:40 UTC15m
2026-07-25 PDT5786 GSP → PHL Jul 25, 15:15 UTCJul 25, 16:20 UTC1h 5m
2026-07-25 PDT5829 CLT → PGV Jul 25, 13:30 UTCJul 25, 14:00 UTC30m
2026-07-24 PDT5857 ORD → ALB Jul 24, 23:40 UTCJul 25, 00:30 UTC50m
2026-07-24 PDT5857 ORD → ALB Jul 24, 22:10 UTCJul 24, 22:50 UTC40m
2026-07-24 PDT5894 SAV → PHL Jul 24, 19:25 UTCJul 24, 20:30 UTC1h 5m
2026-07-24 PDT5894 SAV → PHL Jul 24, 17:15 UTCJul 24, 18:15 UTC1h 0m
2026-07-24 PDT5894 SAV → PHL Jul 24, 15:25 UTCJul 24, 16:00 UTC35m
2026-07-24 PDT5894 SAV → PHL Jul 24, 13:50 UTCJul 24, 14:25 UTC35m
2026-07-24 PDT6022 ROC → BOS Jul 24, 10:10 UTCJul 24, 10:55 UTC45m
2026-07-24 PDT6022 ROC → BOS Jul 24, 10:05 UTCJul 24, 10:55 UTC50m
2026-07-24 PDT6020 CVG → PHL Jul 24, 01:30 UTCJul 24, 02:20 UTC50m
2026-07-23 PDT5801 ORD → AZO Jul 23, 23:20 UTCJul 24, 00:40 UTC1h 20m
2026-07-23 PDT5801 ORD → AZO Jul 23, 20:05 UTCJul 23, 21:35 UTC1h 30m
2026-07-23 PDT6011 YUL → PHL Jul 23, 17:30 UTCJul 23, 18:35 UTC1h 5m
2026-07-23 PDT6011 YUL → PHL Jul 23, 15:20 UTCJul 23, 16:25 UTC1h 5m
2026-07-23 PDT6029 BOS → ROC Jul 23, 12:05 UTCJul 23, 13:15 UTC1h 10m
2026-07-23 PDT6027 ROC → PHL Jul 23, 00:42 UTCJul 23, 01:47 UTC1h 5m
2026-07-23 PDT6027 ROC → PHL Jul 23, 00:45 UTCJul 23, 01:50 UTC1h 5m
2026-07-22 PDT6038 - Jul 22, 21:55 UTCJul 22, 23:25 UTC1h 30m
2026-07-22 PDT6038 BGR → PHL Jul 22, 21:52 UTCJul 22, 23:20 UTC1h 28m
2026-07-22 PDT6038 - Jul 22, 20:25 UTCJul 22, 21:10 UTC45m
2026-07-22 PDT6038 - Jul 22, 20:05 UTCJul 22, 20:20 UTC15m
2026-07-22 PDT5915 - Jul 22, 17:20 UTCJul 22, 18:45 UTC1h 25m
2026-07-22 PDT5915 PHL → SDF Jul 22, 14:40 UTCJul 22, 16:15 UTC1h 35m
2026-07-22 PDT5830 RIC → PHL Jul 22, 12:15 UTCJul 22, 12:50 UTC35m
2026-07-22 PDT5830 RIC → PHL Jul 22, 12:13 UTCJul 22, 12:54 UTC41m
2026-07-22 PDT5964 MHT → PHL Jul 22, 01:20 UTCJul 22, 02:30 UTC1h 10m
2026-07-21 PDT6029 BOS → ROC Jul 21, 15:30 UTCJul 21, 16:35 UTC1h 5m
2026-07-21 PDT6027 PHL → YUL Jul 21, 00:25 UTCJul 21, 01:35 UTC1h 10m
2026-07-20 PDT5974 PHL → SYR Jul 20, 21:35 UTCJul 20, 22:30 UTC55m
2026-07-20 PDT5974 PHL → SYR Jul 20, 19:45 UTCJul 20, 20:30 UTC45m
2026-07-20 PDT5915 - Jul 20, 16:40 UTCJul 20, 18:05 UTC1h 25m
2026-07-20 PDT5915 - Jul 20, 14:10 UTCJul 20, 15:45 UTC1h 35m
2026-07-20 PDT5830 - Jul 20, 12:25 UTCJul 20, 13:00 UTC35m
2026-07-19 PDT5969 GSO → PHL Jul 19, 23:10 UTCJul 19, 23:50 UTC40m
2026-07-19 PDT6121 HSV → CLT Jul 19, 18:15 UTCJul 19, 18:55 UTC40m
2026-07-19 PDT6121 HSV → CLT Jul 19, 16:45 UTCJul 19, 17:25 UTC40m

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 N681AE page for operator, model, and routing details .

Mode-S A906F3 frequently asked

What is Mode-S code A906F3?
A906F3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N681AE.
Where is Mode-S A906F3 registered?
Mode-S code A906F3 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 A906F3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A906F3, octal 52203363, decimal 11,077,363.
What flights does A906F3 operate?
Mode-S A906F3 has broadcast 20 distinct callsigns, including PDT6126, PDT6116, PDT6036, PDT5817, PDT6046.