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sensors Mode-S transponder

A915CF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N685AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A915CF
Octal
52212717
Decimal
11,081,167
Country
US
Tail
N685AE
Type
E145
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
916
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S A915CF.

Country allocation

The ICAO 24-bit address A915CF 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
PDT6000 - 13 2026-07-16
PDT6131 - 12 2026-07-05
PDT6052 Piedmont Airlines 12 2026-07-23
PDT6119 Piedmont Airlines 11 2026-07-22
PDT6079 - 11 2026-07-16
PDT5807 Piedmont Airlines 11 2026-07-21
PDT6110 - 10 2026-07-23
PDT6049 - 10 2026-07-14
PDT6032 - 10 2026-06-24
PDT5852 Piedmont Airlines 10 2026-07-20
PDT6126 - 9 2026-07-01
PDT6070 - 9 2026-07-12
PDT5806 Piedmont Airlines 9 2026-06-10
PDT5792 - 9 2026-07-17
PDT6129 - 8 2026-07-22
PDT6030 - 8 2026-07-03
PDT5981 Piedmont Airlines 8 2026-07-23
PDT5962 - 8 2026-07-21
PDT5927 - 8 2026-07-04
PDT5910 - 8 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT5823 GSO → PHL Jul 26, 21:05 UTCJul 26, 21:40 UTC35m
2026-07-26 PDT5823 GSO → PHL Jul 26, 19:35 UTCJul 26, 20:05 UTC30m
2026-07-26 PDT5810 MHT → PHL Jul 26, 17:15 UTCJul 26, 18:25 UTC1h 10m
2026-07-26 PDT5810 MHT → PHL Jul 26, 15:20 UTCJul 26, 16:15 UTC55m
2026-07-26 PDT5897 SBY → CLT Jul 26, 11:50 UTCJul 26, 12:50 UTC1h 0m
2026-07-26 PDT5897 SBY → CLT Jul 26, 11:49 UTCJul 26, 13:03 UTC1h 14m
2026-07-26 PDT5860 CLT → SBY Jul 26, 00:40 UTCJul 26, 01:35 UTC55m
2026-07-25 PDT5851 SYR → BOS Jul 25, 22:20 UTCJul 25, 23:00 UTC40m
2026-07-25 PDT5851 SYR → BOS Jul 25, 20:45 UTCJul 25, 21:15 UTC30m
2026-07-25 PDT5805 GSO → PHL Jul 25, 18:50 UTCJul 25, 19:10 UTC20m
2026-07-25 PDT5805 GSO → PHL Jul 25, 18:44 UTCJul 25, 19:08 UTC24m
2026-07-25 PDT5805 GSO → PHL Jul 25, 17:25 UTCJul 25, 17:50 UTC25m
2026-07-25 PDT6068 DTW → PHL Jul 25, 15:20 UTCJul 25, 16:05 UTC45m
2026-07-25 PDT6068 DTW → PHL Jul 25, 15:14 UTCJul 25, 16:02 UTC48m
2026-07-25 PDT6068 DTW → PHL Jul 25, 13:50 UTCJul 25, 14:20 UTC30m
2026-07-25 PDT5808 EVV → CLT Jul 25, 10:45 UTCJul 25, 11:55 UTC1h 10m
2026-07-25 PDT5818 CLT → EVV Jul 25, 01:10 UTCJul 25, 02:05 UTC55m
2026-07-24 PDT6065 BOS → ROC Jul 24, 21:20 UTCJul 24, 22:40 UTC1h 20m
2026-07-24 PDT6065 BOS → ROC Jul 24, 19:20 UTCJul 24, 20:30 UTC1h 10m
2026-07-24 PDT5853 HSV → ORD Jul 24, 17:35 UTCJul 24, 18:10 UTC35m
2026-07-24 PDT5853 HSV → ORD Jul 24, 17:29 UTCJul 24, 18:11 UTC42m
2026-07-24 PDT5853 HSV → ORD Jul 24, 15:55 UTCJul 24, 16:20 UTC25m
2026-07-24 PDT5817 AVL → PHL Jul 24, 13:45 UTCJul 24, 14:20 UTC35m
2026-07-24 PDT5817 AVL → PHL Jul 24, 13:43 UTCJul 24, 14:37 UTC54m
2026-07-24 PDT5817 AVL → PHL Jul 24, 12:10 UTCJul 24, 12:50 UTC40m
2026-07-24 PDT5812 ROC → BOS Jul 24, 05:30 UTCJul 24, 06:45 UTC1h 15m
2026-07-24 PDT5812 ROC → BOS Jul 24, 01:40 UTCJul 24, 03:15 UTC1h 35m
2026-07-23 PDT6052 GSO → PHL Jul 23, 23:05 UTCJul 23, 23:45 UTC40m
2026-07-23 PDT6052 GSO → PHL Jul 23, 23:03 UTCJul 23, 23:53 UTC50m
2026-07-23 PDT6052 GSO → PHL Jul 23, 21:30 UTCJul 23, 22:20 UTC50m
2026-07-23 PDT6110 - Jul 23, 18:55 UTCJul 23, 19:20 UTC25m
2026-07-23 PDT5981 CAE → PHL Jul 23, 17:25 UTCJul 23, 17:55 UTC30m
2026-07-23 PDT5981 CAE → PHL Jul 23, 15:40 UTCJul 23, 16:00 UTC20m
2026-07-23 PDT5981 CAE → PHL Jul 23, 14:25 UTCJul 23, 14:45 UTC20m
2026-07-23 PDT5981 CAE → PHL Jul 23, 10:40 UTCJul 23, 11:05 UTC25m
2026-07-23 PDT5896 PHL → CLE Jul 23, 01:25 UTCJul 23, 01:45 UTC20m
2026-07-23 PDT5896 PHL → CLE Jul 23, 01:23 UTCJul 23, 01:49 UTC26m
2026-07-22 PDT6119 GSP → PHL Jul 22, 23:00 UTCJul 23, 00:10 UTC1h 10m
2026-07-22 PDT6119 GSP → PHL Jul 22, 20:40 UTCJul 22, 21:45 UTC1h 5m
2026-07-22 PDT6129 - Jul 22, 16:25 UTCJul 22, 17:35 UTC1h 10m
2026-07-22 PDT6129 - Jul 22, 14:05 UTCJul 22, 15:10 UTC1h 5m
2026-07-21 PDT5807 CLT → MGM Jul 21, 21:45 UTCJul 21, 22:35 UTC50m
2026-07-21 PDT5807 CLT → MGM Jul 21, 21:40 UTCJul 21, 22:35 UTC55m
2026-07-21 PDT5807 CLT → MGM Jul 21, 19:55 UTCJul 21, 20:50 UTC55m
2026-07-21 PDT6053 CAE → CLT Jul 21, 17:40 UTCJul 21, 18:20 UTC40m
2026-07-21 PDT6053 CAE → CLT Jul 21, 16:00 UTCJul 21, 16:35 UTC35m
2026-07-21 PDT5962 - Jul 21, 13:05 UTCJul 21, 14:00 UTC55m
2026-07-21 PDT5834 - Jul 21, 00:20 UTCJul 21, 00:50 UTC30m
2026-07-20 PDT5807 CLT → MGM Jul 20, 21:45 UTCJul 20, 22:45 UTC1h 0m
2026-07-20 PDT5807 CLT → MGM Jul 20, 20:05 UTCJul 20, 20:55 UTC50m

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 N685AE page for operator, model, and routing details .

Mode-S A915CF frequently asked

What is Mode-S code A915CF?
A915CF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N685AE.
Where is Mode-S A915CF registered?
Mode-S code A915CF 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 A915CF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A915CF, octal 52212717, decimal 11,081,167.
What flights does A915CF operate?
Mode-S A915CF has broadcast 20 distinct callsigns, including PDT6000, PDT6131, PDT6052, PDT6119, PDT6079.