Apparatus

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sensors Mode-S transponder

A2278F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N238PT · DE HAVILLAND DHC-4 Caribou · operated by NORDLUFT LLC

Hex
A2278F
Octal
50423617
Decimal
10,626,959
Country
US
Tail
N238PT
Type
DHC4
No current signal · last broadcast 1h ago
Flights observed
202
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A2278F.

Country allocation

The ICAO 24-bit address A2278F 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
N238PT - 202 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N238PT - Jul 14, 17:05 UTCJul 14, 18:40 UTC1h 35m
2026-07-14 N238PT NZY → NZY Jul 14, 14:55 UTCJul 14, 16:25 UTC1h 30m
2026-07-13 N238PT - Jul 13, 21:40 UTCJul 13, 22:10 UTC30m
2026-07-13 N238PT - Jul 13, 20:25 UTCJul 13, 21:00 UTC35m
2026-07-13 N238PT - Jul 13, 19:10 UTCJul 13, 19:40 UTC30m
2026-07-13 N238PT - Jul 13, 18:15 UTCJul 13, 18:50 UTC35m
2026-07-13 N238PT - Jul 13, 17:05 UTCJul 13, 17:45 UTC40m
2026-07-13 N238PT - Jul 13, 16:10 UTCJul 13, 16:45 UTC35m
2026-07-13 N238PT - Jul 13, 14:55 UTCJul 13, 15:35 UTC40m
2026-07-13 N238PT - Jul 13, 14:00 UTCJul 13, 14:50 UTC50m
2026-07-10 N238PT - Jul 10, 22:15 UTCJul 10, 22:50 UTC35m
2026-07-10 N238PT - Jul 10, 21:10 UTCJul 10, 21:40 UTC30m
2026-07-10 N238PT - Jul 10, 17:00 UTCJul 10, 18:35 UTC1h 35m
2026-07-10 N238PT - Jul 10, 15:40 UTCJul 10, 16:20 UTC40m
2026-07-10 N238PT - Jul 10, 14:50 UTCJul 10, 15:25 UTC35m
2026-07-09 N238PT - Jul 9, 22:50 UTCJul 9, 23:30 UTC40m
2026-07-09 N238PT - Jul 9, 21:45 UTCJul 9, 22:15 UTC30m
2026-07-09 N238PT NZY → NZY Jul 9, 19:45 UTCJul 9, 21:20 UTC1h 35m
2026-07-09 N238PT - Jul 9, 14:50 UTCJul 9, 16:25 UTC1h 35m
2026-07-07 N238PT - Jul 7, 21:25 UTCJul 7, 21:55 UTC30m
2026-07-07 N238PT - Jul 7, 20:15 UTCJul 7, 20:45 UTC30m
2026-07-07 N238PT - Jul 7, 18:05 UTCJul 7, 19:35 UTC1h 30m
2026-07-07 N238PT - Jul 7, 16:55 UTCJul 7, 17:30 UTC35m
2026-07-07 N238PT - Jul 7, 15:55 UTCJul 7, 16:35 UTC40m
2026-07-07 N238PT NZY → NZY Jul 7, 14:00 UTCJul 7, 15:30 UTC1h 30m
2026-07-02 N238PT - Jul 2, 23:00 UTCJul 2, 23:30 UTC30m
2026-07-02 N238PT - Jul 2, 21:50 UTCJul 2, 22:20 UTC30m
2026-07-02 N238PT NZY → NZY Jul 2, 19:30 UTCJul 2, 21:00 UTC1h 30m
2026-07-02 N238PT NZY → NZY Jul 2, 15:00 UTCJul 2, 16:40 UTC1h 40m
2026-06-30 N238PT - Jun 30, 23:25 UTCJul 1, 00:00 UTC35m
2026-06-30 N238PT - Jun 30, 22:10 UTCJun 30, 22:40 UTC30m
2026-06-30 N238PT NZY → NZY Jun 30, 17:25 UTCJun 30, 19:00 UTC1h 35m
2026-06-30 N238PT NZY → NZY Jun 30, 15:10 UTCJun 30, 16:45 UTC1h 35m
2026-06-29 N238PT - Jun 29, 22:19 UTCJun 29, 22:49 UTC30m
2026-06-29 N238PT - Jun 29, 20:59 UTCJun 29, 21:34 UTC35m
2026-06-29 N238PT - Jun 29, 19:00 UTCJun 29, 20:54 UTC1h 55m
2026-06-29 N238PT NZY → NZY Jun 29, 16:50 UTCJun 29, 18:25 UTC1h 35m
2026-06-29 N238PT - Jun 29, 15:45 UTCJun 29, 16:19 UTC35m
2026-06-29 N238PT - Jun 29, 14:19 UTCJun 29, 14:54 UTC35m
2026-06-26 N238PT - Jun 26, 19:14 UTCJun 26, 19:45 UTC30m
2026-06-26 N238PT - Jun 26, 17:40 UTCJun 26, 18:44 UTC1h 5m
2026-06-26 N238PT - Jun 26, 15:39 UTCJun 26, 15:54 UTC15m
2026-06-26 N238PT - Jun 26, 14:39 UTCJun 26, 15:05 UTC25m
2026-06-26 N238PT - Jun 26, 12:00 UTCJun 26, 12:19 UTC20m
2026-06-25 N238PT - Jun 25, 13:45 UTCJun 25, 14:09 UTC25m
2026-06-25 N238PT - Jun 25, 12:19 UTCJun 25, 12:44 UTC25m
2026-06-25 N238PT - Jun 25, 11:04 UTCJun 25, 11:25 UTC20m
2026-06-24 N238PT - Jun 24, 15:35 UTCJun 24, 16:34 UTC1h 0m
2026-06-24 N238PT - Jun 24, 14:15 UTCJun 24, 14:39 UTC25m
2026-06-24 N238PT - Jun 24, 12:30 UTCJun 24, 12:54 UTC25m

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 N238PT page for operator, model, and routing details .

Mode-S A2278F frequently asked

What is Mode-S code A2278F?
A2278F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N238PT.
Where is Mode-S A2278F registered?
Mode-S code A2278F 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 A2278F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2278F, octal 50423617, decimal 10,626,959.
What flights does A2278F operate?
Mode-S A2278F has broadcast 1 distinct callsign, including N238PT.