Apparatus

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sensors Mode-S transponder

A31F88

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N300CD · SR-300 · operated by BRAYMER THOMAS L

Hex
A31F88
Octal
50617610
Decimal
10,690,440
Country
US
Tail
N300CD
No current signal · last broadcast 1d ago
Flights observed
84
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A31F88.

Country allocation

The ICAO 24-bit address A31F88 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 1 distinct

Callsign Airline Flights Last seen
N300CD - 84 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 N300CD - Jul 16, 17:20 UTCJul 16, 17:35 UTC15m
2026-07-16 N300CD - Jul 16, 15:35 UTCJul 16, 15:49 UTC15m
2026-07-16 N300CD - Jul 16, 00:15 UTCJul 16, 01:00 UTC45m
2026-07-15 N300CD - Jul 15, 22:55 UTCJul 15, 23:10 UTC15m
2026-07-15 N300CD - Jul 15, 19:15 UTCJul 15, 19:50 UTC35m
2026-07-15 N300CD - Jul 15, 01:05 UTCJul 15, 01:50 UTC45m
2026-07-11 N300CD - Jul 11, 00:55 UTCJul 11, 01:15 UTC20m
2026-07-10 N300CD - Jul 10, 23:40 UTCJul 10, 23:50 UTC10m
2026-07-10 N300CD - Jul 10, 00:05 UTCJul 10, 00:30 UTC25m
2026-07-09 N300CD - Jul 9, 21:55 UTCJul 9, 22:40 UTC45m
2026-07-09 N300CD - Jul 9, 17:00 UTCJul 9, 17:10 UTC10m
2026-07-09 N300CD - Jul 9, 14:20 UTCJul 9, 14:45 UTC25m
2026-07-03 N300CD - Jul 3, 01:15 UTCJul 3, 01:55 UTC40m
2026-07-02 N300CD - Jul 2, 01:30 UTCJul 2, 01:55 UTC25m
2026-06-26 N300CD - Jun 26, 21:39 UTCJun 26, 21:59 UTC20m
2026-06-26 N300CD - Jun 26, 20:40 UTCJun 26, 20:59 UTC20m
2026-06-26 N300CD - Jun 26, 18:15 UTCJun 26, 19:04 UTC50m
2026-06-26 N300CD - Jun 26, 16:54 UTCJun 26, 17:19 UTC25m
2026-06-26 N300CD - Jun 26, 01:24 UTCJun 26, 01:54 UTC30m
2026-06-25 N300CD - Jun 25, 01:35 UTCJun 25, 01:50 UTC15m
2026-06-24 N300CD - Jun 24, 22:19 UTCJun 24, 23:54 UTC1h 35m
2026-06-18 N300CD - Jun 18, 01:05 UTCJun 18, 01:50 UTC45m
2026-06-12 N300CD - Jun 12, 00:20 UTCJun 12, 00:35 UTC15m
2026-06-11 N300CD - Jun 11, 23:20 UTCJun 11, 23:40 UTC20m
2026-06-11 N300CD - Jun 11, 22:30 UTCJun 11, 22:45 UTC15m
2026-06-11 N300CD - Jun 11, 19:40 UTCJun 11, 20:05 UTC25m
2026-06-11 N300CD - Jun 11, 17:10 UTCJun 11, 17:55 UTC45m
2026-06-10 N300CD - Jun 10, 22:00 UTCJun 10, 22:10 UTC10m
2026-06-10 N300CD - Jun 10, 20:55 UTCJun 10, 21:05 UTC10m
2026-06-02 N300CD - Jun 2, 20:00 UTCJun 2, 21:15 UTC1h 15m
2026-06-02 N300CD - Jun 2, 16:00 UTCJun 2, 16:10 UTC10m
2026-06-02 N300CD - Jun 2, 14:15 UTCJun 2, 14:35 UTC20m
2026-06-02 N300CD - Jun 2, 01:35 UTCJun 2, 01:45 UTC10m
2026-06-02 N300CD - Jun 2, 00:35 UTCJun 2, 00:55 UTC20m
2026-06-01 N300CD - Jun 1, 23:10 UTCJun 1, 23:30 UTC20m
2026-06-01 N300CD - Jun 1, 16:50 UTCJun 1, 17:20 UTC30m
2026-06-01 N300CD - Jun 1, 15:40 UTCJun 1, 16:15 UTC35m
2026-05-31 N300CD - May 31, 18:50 UTCMay 31, 21:25 UTC2h 35m
2026-05-25 N300CD - May 25, 18:25 UTCMay 25, 18:40 UTC15m
2026-05-25 N300CD - May 25, 16:05 UTCMay 25, 16:15 UTC10m
2026-05-25 N300CD - May 25, 15:15 UTCMay 25, 15:35 UTC20m
2026-05-25 N300CD - May 25, 13:30 UTCMay 25, 13:40 UTC10m
2026-05-24 N300CD - May 24, 00:15 UTCMay 24, 01:10 UTC55m
2026-05-23 N300CD - May 23, 22:05 UTCMay 23, 22:45 UTC40m
2026-05-23 N300CD - May 23, 01:10 UTCMay 23, 01:30 UTC20m
2026-05-22 N300CD - May 22, 23:55 UTCMay 23, 00:20 UTC25m
2026-05-16 N300CD - May 16, 22:30 UTCMay 16, 23:25 UTC55m
2026-05-16 N300CD - May 16, 21:45 UTCMay 16, 21:55 UTC10m
2026-05-16 N300CD - May 16, 19:05 UTCMay 16, 19:25 UTC20m
2026-05-16 N300CD - May 16, 12:40 UTCMay 16, 13:11 UTC30m

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 N300CD page for operator, model, and routing details .

Mode-S A31F88 frequently asked

What is Mode-S code A31F88?
A31F88 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N300CD.
Where is Mode-S A31F88 registered?
Mode-S code A31F88 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 A31F88 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A31F88, octal 50617610, decimal 10,690,440.
What flights does A31F88 operate?
Mode-S A31F88 has broadcast 1 distinct callsign, including N300CD.