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sensors Mode-S transponder

A8FD2C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N679AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A8FD2C
Octal
52176454
Decimal
11,074,860
Country
US
Tail
N679AE
Type
E145
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
897
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A8FD2C.

Country allocation

The ICAO 24-bit address A8FD2C 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
PDT5910 - 18 2026-07-12
PDT5992 - 13 2026-06-29
PDT5957 - 10 2026-07-10
PDT5927 Piedmont Airlines 10 2026-06-02
PDT5798 - 10 2026-06-30
PDT5981 - 9 2026-07-04
PDT5822 - 9 2026-07-09
PDT6064 - 8 2026-07-15
PDT6058 Piedmont Airlines 8 2026-05-06
PDT5868 Piedmont Airlines 8 2026-06-01
PDT5853 - 8 2026-07-13
PDT5831 Piedmont Airlines 8 2026-05-31
PDT6074 Piedmont Airlines 7 2026-07-24
PDT6065 - 7 2026-07-10
PDT6016 - 7 2026-07-07
PDT6001 Piedmont Airlines 7 2026-05-13
PDT6000 Piedmont Airlines 7 2026-06-03
PDT5988 - 7 2026-07-07
PDT5980 Piedmont Airlines 7 2026-05-16
PDT5932 - 7 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5795 BOS → MDT Jul 26, 22:25 UTCJul 26, 23:00 UTC35m
2026-07-26 PDT5795 BOS → MDT Jul 26, 19:25 UTCJul 26, 21:05 UTC1h 40m
2026-07-26 PDT5838 PHL → RDU Jul 26, 16:55 UTCJul 26, 18:15 UTC1h 20m
2026-07-26 PDT5838 PHL → RDU Jul 26, 16:50 UTCJul 26, 18:16 UTC1h 26m
2026-07-26 PDT5838 PHL → RDU Jul 26, 14:25 UTCJul 26, 15:45 UTC1h 20m
2026-07-26 PDT5833 BDL → PHL Jul 26, 10:50 UTCJul 26, 12:05 UTC1h 15m
2026-07-25 PDT5990 PHL → SYR Jul 25, 22:55 UTCJul 26, 00:00 UTC1h 5m
2026-07-25 PDT6104 SYR → BOS Jul 25, 09:15 UTCJul 25, 09:55 UTC40m
2026-07-25 PDT6015 PHL → PWM Jul 25, 01:30 UTCJul 25, 02:00 UTC30m
2026-07-24 PDT5939 CVG → CLT Jul 24, 22:55 UTCJul 24, 23:35 UTC40m
2026-07-24 PDT5939 CVG → CLT Jul 24, 21:40 UTCJul 24, 22:00 UTC20m
2026-07-24 PDT6077 MSN → PHL Jul 24, 19:40 UTCJul 24, 20:00 UTC20m
2026-07-24 PDT6077 MSN → PHL Jul 24, 18:05 UTCJul 24, 18:20 UTC15m
2026-07-24 PDT5863 ORD → MDT Jul 24, 16:05 UTCJul 24, 16:50 UTC45m
2026-07-24 PDT5863 ORD → MDT Jul 24, 14:35 UTCJul 24, 15:05 UTC30m
2026-07-24 PDT5955 HTS → CLT Jul 24, 10:40 UTCJul 24, 11:20 UTC40m
2026-07-24 PDT5971 PHL → CAE Jul 24, 04:25 UTCJul 24, 04:55 UTC30m
2026-07-24 PDT6074 TYS → PHL Jul 24, 02:45 UTCJul 24, 03:15 UTC30m
2026-07-24 PDT6074 TYS → PHL Jul 24, 02:41 UTCJul 24, 03:15 UTC34m
2026-07-24 PDT6074 TYS → PHL Jul 24, 01:10 UTCJul 24, 01:35 UTC25m
2026-07-23 PDT6069 PHL → SYR Jul 23, 22:45 UTCJul 23, 23:35 UTC50m
2026-07-23 PDT6069 PHL → SYR Jul 23, 18:00 UTCJul 23, 18:40 UTC40m
2026-07-23 PDT5820 - Jul 23, 16:15 UTCJul 23, 16:50 UTC35m
2026-07-23 PDT5820 - Jul 23, 14:55 UTCJul 23, 15:25 UTC30m
2026-07-23 PDT5820 CLT → ILM Jul 23, 14:51 UTCJul 23, 15:27 UTC36m
2026-07-23 PDT6098 PHL → MDT Jul 23, 12:45 UTCJul 23, 13:30 UTC45m
2026-07-23 PDT6098 PHL → MDT Jul 23, 12:38 UTCJul 23, 13:24 UTC46m
2026-07-23 PDT6071 MDT → BOS Jul 23, 03:05 UTCJul 23, 03:35 UTC30m
2026-07-23 PDT6071 MDT → BOS Jul 23, 03:02 UTCJul 23, 03:43 UTC41m
2026-07-23 PDT6049 BGR → PHL Jul 23, 00:20 UTCJul 23, 01:05 UTC45m
2026-07-22 PDT6049 BGR → PHL Jul 22, 22:50 UTCJul 22, 23:30 UTC40m
2026-07-22 PDT5797 - Jul 22, 20:20 UTCJul 22, 20:40 UTC20m
2026-07-22 PDT5797 - Jul 22, 19:00 UTCJul 22, 19:25 UTC25m
2026-07-22 PDT5796 MSN → ORD Jul 22, 17:10 UTCJul 22, 17:30 UTC20m
2026-07-22 PDT5796 MSN → ORD Jul 22, 16:00 UTCJul 22, 16:20 UTC20m
2026-07-22 PDT6009 - Jul 22, 14:20 UTCJul 22, 15:00 UTC40m
2026-07-22 PDT8822 CLT → GPT Jul 22, 12:55 UTCJul 22, 13:25 UTC30m
2026-07-22 PDT9653 PHL → CLE Jul 22, 00:55 UTCJul 22, 01:50 UTC55m
2026-07-21 PDT6123 BUF → PHL Jul 21, 15:25 UTCJul 21, 16:50 UTC1h 25m
2026-07-21 PDT6123 BUF → PHL Jul 21, 13:15 UTCJul 21, 14:25 UTC1h 10m
2026-07-21 PDT5904 CLT → FAY Jul 21, 11:15 UTCJul 21, 12:10 UTC55m
2026-07-21 PDT6090 - Jul 21, 02:50 UTCJul 21, 03:35 UTC45m
2026-07-21 PDT6090 PHL → ROC Jul 21, 02:46 UTCJul 21, 03:33 UTC47m
2026-07-20 PDT6125 PHL → CVG Jul 20, 23:20 UTCJul 21, 00:20 UTC59m
2026-07-20 PDT6125 PHL → CVG Jul 20, 21:35 UTCJul 20, 22:35 UTC1h 0m
2026-07-20 PDT888Q PHL → YQB Jul 20, 17:55 UTCJul 20, 19:20 UTC1h 25m
2026-07-20 PDT5888 PHL → CLE Jul 20, 15:15 UTCJul 20, 16:35 UTC1h 20m
2026-07-20 PDT5942 - Jul 20, 00:45 UTCJul 20, 01:45 UTC1h 0m
2026-07-19 PDT5942 - Jul 19, 23:05 UTCJul 19, 23:55 UTC50m
2026-07-19 PDT6025 BOS → ROC Jul 19, 20:35 UTCJul 19, 21:40 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 N679AE page for operator, model, and routing details .

Mode-S A8FD2C frequently asked

What is Mode-S code A8FD2C?
A8FD2C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N679AE.
Where is Mode-S A8FD2C registered?
Mode-S code A8FD2C 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 A8FD2C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8FD2C, octal 52176454, decimal 11,074,860.
What flights does A8FD2C operate?
Mode-S A8FD2C has broadcast 20 distinct callsigns, including PDT5910, PDT5992, PDT5957, PDT5927, PDT5798.