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sensors Mode-S transponder

A8A6C0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N657AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A8A6C0
Octal
52123300
Decimal
11,052,736
Country
US
Tail
N657AE
Type
E145
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
484
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A8A6C0.

Country allocation

The ICAO 24-bit address A8A6C0 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
PDT6077 Piedmont Airlines 8 2026-07-21
PDT5811 Piedmont Airlines 8 2026-07-23
PDT6121 - 7 2026-07-11
PDT6041 - 7 2026-07-13
PDT5942 - 7 2026-07-05
PDT5832 Piedmont Airlines 7 2026-07-22
PDT5816 - 7 2026-07-13
PDT6130 - 6 2026-07-01
PDT6126 - 6 2026-07-13
PDT5925 - 6 2026-07-12
PDT5793 Piedmont Airlines 6 2026-07-24
PDT6093 - 5 2026-06-28
PDT6073 - 5 2026-07-16
PDT6038 - 5 2026-07-10
PDT6026 - 5 2026-06-20
PDT6015 Piedmont Airlines 5 2026-06-23
PDT5982 - 5 2026-06-27
PDT5974 - 5 2026-07-11
PDT5963 - 5 2026-07-12
PDT5955 Piedmont Airlines 5 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT6051 CVG → PHL Jul 26, 21:40 UTCJul 26, 22:00 UTC20m
2026-07-26 PDT6051 CVG → PHL Jul 26, 20:10 UTCJul 26, 20:50 UTC40m
2026-07-26 PDT6129 PHL → ROC Jul 26, 17:00 UTCJul 26, 18:15 UTC1h 15m
2026-07-26 PDT6129 PHL → ROC Jul 26, 14:40 UTCJul 26, 15:45 UTC1h 5m
2026-07-26 PDT6010 CLE → PHL Jul 26, 10:15 UTCJul 26, 11:20 UTC1h 5m
2026-07-26 PDT6010 CLE → PHL Jul 26, 10:15 UTCJul 26, 11:23 UTC1h 8m
2026-07-25 PDT5788 PHL → SYR Jul 25, 23:05 UTCJul 26, 00:05 UTC1h 0m
2026-07-25 PDT5988 PHL → PVD Jul 25, 20:45 UTCJul 25, 21:45 UTC1h 0m
2026-07-25 PDT5988 PHL → PVD Jul 25, 18:45 UTCJul 25, 19:40 UTC55m
2026-07-25 PDT5820 GSP → PHL Jul 25, 16:05 UTCJul 25, 17:00 UTC55m
2026-07-25 PDT5820 GSP → PHL Jul 25, 15:59 UTCJul 25, 16:55 UTC56m
2026-07-25 PDT5820 GSP → PHL Jul 25, 14:30 UTCJul 25, 14:55 UTC25m
2026-07-25 PDT5870 YUL → PHL Jul 25, 11:40 UTCJul 25, 12:05 UTC25m
2026-07-25 PDT5815 ORD → DAY Jul 25, 01:35 UTCJul 25, 02:00 UTC25m
2026-07-25 PDT5815 ORD → DAY Jul 25, 01:34 UTCJul 25, 01:59 UTC25m
2026-07-24 PDT5835 ALB → ORD Jul 24, 18:30 UTCJul 24, 19:45 UTC1h 15m
2026-07-24 PDT5835 ALB → ORD Jul 24, 16:20 UTCJul 24, 17:25 UTC1h 5m
2026-07-24 PDT5793 CLT → LYH Jul 24, 13:35 UTCJul 24, 14:10 UTC35m
2026-07-24 PDT5793 CLT → LYH Jul 24, 13:32 UTCJul 24, 14:03 UTC31m
2026-07-24 PDT5793 CLT → LYH Jul 24, 11:50 UTCJul 24, 12:10 UTC20m
2026-07-24 PDT5892 ORD → TVC Jul 24, 09:20 UTCJul 24, 09:45 UTC25m
2026-07-24 PDT5892 ORD → TVC Jul 24, 09:16 UTCJul 24, 09:44 UTC28m
2026-07-24 PDT5896 PHL → CLE Jul 24, 02:20 UTCJul 24, 02:50 UTC30m
2026-07-24 PDT5896 PHL → CLE Jul 24, 02:18 UTCJul 24, 02:49 UTC31m
2026-07-23 PDT5902 CMH → ORD Jul 23, 23:25 UTCJul 24, 00:25 UTC1h 0m
2026-07-23 PDT5902 CMH → ORD Jul 23, 23:22 UTCJul 24, 00:23 UTC1h 1m
2026-07-23 PDT5902 CMH → ORD Jul 23, 21:40 UTCJul 23, 22:40 UTC1h 0m
2026-07-23 PDT6127 PHF → CLT Jul 23, 18:35 UTCJul 23, 19:25 UTC50m
2026-07-23 PDT6127 PHF → CLT Jul 23, 18:29 UTCJul 23, 19:41 UTC1h 12m
2026-07-23 PDT6127 PHF → CLT Jul 23, 16:15 UTCJul 23, 17:00 UTC45m
2026-07-23 PDT5828 SYR → BOS Jul 23, 13:10 UTCJul 23, 14:25 UTC1h 15m
2026-07-23 PDT5828 SYR → BOS Jul 23, 11:40 UTCJul 23, 12:15 UTC35m
2026-07-23 PDT5855 ORD → MDT Jul 23, 09:10 UTCJul 23, 09:40 UTC30m
2026-07-23 PDT5855 ORD → MDT Jul 23, 09:08 UTCJul 23, 09:37 UTC29m
2026-07-23 PDT5791 BDL → PHL Jul 23, 03:10 UTCJul 23, 03:30 UTC20m
2026-07-23 PDT5791 BDL → PHL Jul 23, 03:08 UTCJul 23, 03:36 UTC28m
2026-07-23 PDT5811 PIT → PHL Jul 23, 00:45 UTCJul 23, 01:40 UTC55m
2026-07-22 PDT5811 PIT → PHL Jul 22, 23:05 UTCJul 22, 23:55 UTC50m
2026-07-22 PDT5832 GSO → PHL Jul 22, 20:10 UTCJul 22, 21:25 UTC1h 15m
2026-07-22 PDT5832 GSO → PHL Jul 22, 17:55 UTCJul 22, 19:00 UTC1h 5m
2026-07-22 PDT6101 YUL → PHL Jul 22, 15:50 UTCJul 22, 16:10 UTC20m
2026-07-22 PDT6101 YUL → PHL Jul 22, 15:46 UTCJul 22, 16:11 UTC25m
2026-07-22 PDT6091 ORD → CLE Jul 22, 13:40 UTCJul 22, 15:00 UTC1h 20m
2026-07-22 PDT5929 CHO → CLT Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-22 PDT5860 CLT → SBY Jul 22, 00:40 UTCJul 22, 01:40 UTC1h 0m
2026-07-21 PDT5825 PHL → GSP Jul 21, 22:25 UTCJul 21, 23:00 UTC35m
2026-07-21 PDT5825 PHL → GSP Jul 21, 20:55 UTCJul 21, 21:25 UTC30m
2026-07-21 PDT6077 MSN → PHL Jul 21, 19:00 UTCJul 21, 19:30 UTC30m
2026-07-21 PDT6077 MSN → PHL Jul 21, 18:53 UTCJul 21, 19:26 UTC33m
2026-07-21 PDT6077 MSN → PHL Jul 21, 17:20 UTCJul 21, 17:35 UTC15m

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 N657AE page for operator, model, and routing details .

Mode-S A8A6C0 frequently asked

What is Mode-S code A8A6C0?
A8A6C0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N657AE.
Where is Mode-S A8A6C0 registered?
Mode-S code A8A6C0 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 A8A6C0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8A6C0, octal 52123300, decimal 11,052,736.
What flights does A8A6C0 operate?
Mode-S A8A6C0 has broadcast 20 distinct callsigns, including PDT6077, PDT5811, PDT6121, PDT6041, PDT5942.