Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4082F4

ICAO 24-bit transponder address · allocated to United Kingdom

Hex
4082F4
Octal
20101364
Decimal
4,227,828
Country
GB
No current signal · last broadcast 13d ago
Flights observed
127
Distinct callsigns
16
Country
GB
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 4082F4.

Country allocation

The ICAO 24-bit address 4082F4 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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 16 distinct

Callsign Airline Flights Last seen
NPT4S - 48 2026-07-24
NPT4N - 39 2026-07-24
NPT7224 - 9 2026-07-18
NPT722F - 8 2026-07-18
NPT1B - 5 2026-06-09
NPT1A - 5 2026-06-09
NPT5U - 3 2026-07-25
NPT6N - 1 2026-07-11
NPT5D - 1 2026-05-18
NPT315F - 1 2026-06-07
NPT315 - 1 2026-06-07
NPT0722F - 1 2026-07-11
NPT04S - 1 2026-06-16
GNPTG - 1 2026-04-26
EGPH - 1 2026-07-21
BOE1234 - 1 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 NPT5U EMA → EDI Jul 25, 01:20 UTCJul 25, 02:05 UTC45m
2026-07-24 NPT4S EDI → EMA Jul 24, 22:00 UTCJul 24, 22:40 UTC40m
2026-07-24 NPT4N EMA → EDI Jul 24, 00:30 UTCJul 24, 01:10 UTC40m
2026-07-23 NPT4S EDI → EMA Jul 23, 22:00 UTCJul 23, 22:45 UTC45m
2026-07-23 NPT4N EMA → EDI Jul 23, 00:40 UTCJul 23, 01:25 UTC45m
2026-07-22 NPT4S EDI → EMA Jul 22, 22:05 UTCJul 22, 22:45 UTC40m
2026-07-22 NPT4N EMA → EDI Jul 22, 00:35 UTCJul 22, 01:20 UTC45m
2026-07-21 NPT4S EDI → EMA Jul 21, 22:05 UTCJul 21, 22:45 UTC40m
2026-07-21 EGPH EMA → EDI Jul 21, 00:30 UTCJul 21, 01:15 UTC45m
2026-07-20 NPT4S EDI → EMA Jul 20, 22:20 UTCJul 20, 22:55 UTC35m
2026-07-18 NPT7224 EMA → EDI Jul 18, 04:25 UTCJul 18, 05:05 UTC40m
2026-07-18 NPT722F EDI → EMA Jul 18, 02:40 UTCJul 18, 03:20 UTC41m
2026-07-18 NPT4N EMA → EDI Jul 18, 00:39 UTCJul 18, 01:25 UTC45m
2026-07-17 NPT4S EDI → EMA Jul 17, 22:15 UTCJul 17, 23:00 UTC45m
2026-07-17 NPT4N EMA → EDI Jul 17, 00:50 UTCJul 17, 01:29 UTC40m
2026-07-16 NPT4S EDI → EMA Jul 16, 22:15 UTCJul 16, 22:59 UTC45m
2026-07-16 NPT4N EMA → EDI Jul 16, 00:35 UTCJul 16, 01:20 UTC45m
2026-07-15 NPT4S EDI → EMA Jul 15, 22:10 UTCJul 15, 22:50 UTC40m
2026-07-15 NPT4N EMA → EDI Jul 15, 00:30 UTCJul 15, 01:10 UTC40m
2026-07-14 NPT4S EDI → EMA Jul 14, 22:05 UTCJul 14, 22:50 UTC44m
2026-07-14 NPT4N EMA → EDI Jul 14, 00:30 UTCJul 14, 01:10 UTC40m
2026-07-13 NPT4S EDI → EMA Jul 13, 22:10 UTCJul 13, 22:55 UTC45m
2026-07-11 NPT7224 EMA → EDI Jul 11, 04:35 UTCJul 11, 05:15 UTC40m
2026-07-11 NPT0722F EDI → EMA Jul 11, 02:35 UTCJul 11, 03:15 UTC40m
2026-07-11 NPT6N EMA → EDI Jul 11, 00:35 UTCJul 11, 01:15 UTC40m
2026-07-10 NPT4S EDI → EMA Jul 10, 22:10 UTCJul 10, 22:50 UTC40m
2026-07-10 NPT4N EMA → EDI Jul 10, 00:35 UTCJul 10, 01:20 UTC45m
2026-07-09 NPT4S EDI → EMA Jul 9, 22:00 UTCJul 9, 22:40 UTC40m
2026-07-09 NPT4N EMA → EDI Jul 9, 00:35 UTCJul 9, 01:15 UTC40m
2026-07-08 NPT4S EDI → EMA Jul 8, 22:00 UTCJul 8, 22:45 UTC45m
2026-07-08 NPT4N EMA → EDI Jul 8, 00:40 UTCJul 8, 01:25 UTC45m
2026-07-07 NPT4S EDI → EMA Jul 7, 22:05 UTCJul 7, 22:45 UTC40m
2026-07-07 NPT4S EMA → EDI Jul 7, 00:30 UTCJul 7, 01:20 UTC50m
2026-07-06 NPT4S EDI → EMA Jul 6, 22:10 UTCJul 6, 22:50 UTC40m
2026-07-04 NPT7224 EMA → EDI Jul 4, 04:35 UTCJul 4, 05:20 UTC45m
2026-07-04 NPT722F EDI → EMA Jul 4, 02:25 UTCJul 4, 03:05 UTC40m
2026-07-04 NPT4N EMA → EDI Jul 4, 00:25 UTCJul 4, 01:10 UTC45m
2026-07-03 NPT4S EDI → EMA Jul 3, 22:10 UTCJul 3, 22:50 UTC40m
2026-07-03 NPT4N EMA → EDI Jul 3, 00:35 UTCJul 3, 01:20 UTC45m
2026-07-02 NPT4S EDI → EMA Jul 2, 22:10 UTCJul 2, 22:50 UTC40m
2026-07-02 NPT4N EMA → EDI Jul 2, 00:40 UTCJul 2, 01:30 UTC50m
2026-07-01 NPT4S EDI → EMA Jul 1, 22:10 UTCJul 1, 22:55 UTC45m
2026-07-01 NPT4N EMA → EDI Jul 1, 00:35 UTCJul 1, 01:20 UTC45m
2026-06-30 NPT4S EDI → EMA Jun 30, 22:05 UTCJun 30, 22:55 UTC50m
2026-06-30 NPT4N EMA → EDI Jun 30, 00:45 UTCJun 30, 01:25 UTC40m
2026-06-29 NPT4S EDI → EMA Jun 29, 22:15 UTCJun 29, 22:55 UTC40m
2026-06-27 NPT7224 EMA → EDI Jun 27, 04:29 UTCJun 27, 05:10 UTC40m
2026-06-27 NPT722F EDI → EMA Jun 27, 02:45 UTCJun 27, 03:25 UTC40m
2026-06-27 NPT4N EMA → EDI Jun 27, 00:44 UTCJun 27, 01:19 UTC35m
2026-06-26 NPT4S - Jun 26, 22:19 UTCJun 26, 23:00 UTC40m

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.

Mode-S 4082F4 frequently asked

What is Mode-S code 4082F4?
4082F4 is an ICAO 24-bit transponder address. Allocated to United Kingdom.
Where is Mode-S 4082F4 registered?
Mode-S code 4082F4 is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4082F4 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4082F4, octal 20101364, decimal 4,227,828.
What flights does 4082F4 operate?
Mode-S 4082F4 has broadcast 16 distinct callsigns, including NPT4S, NPT4N, NPT7224, NPT722F, NPT1B.