Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

401885

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TEMP · PIPER PA-28-140/150/160/180

Hex
401885
Octal
20014205
Decimal
4,200,581
Country
GB
Tail
G-TEMP
Type
P28A
No current signal · last broadcast 12h ago
Flights observed
105
Distinct callsigns
1
Country
GB
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 401885.

Country allocation

The ICAO 24-bit address 401885 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 1 distinct

Callsign Airline Flights Last seen
GTEMP - 105 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 GTEMP - Jul 24, 10:10 UTCJul 24, 11:10 UTC1h 0m
2026-07-24 GTEMP - Jul 24, 08:50 UTCJul 24, 09:35 UTC45m
2026-07-22 GTEMP - Jul 22, 13:55 UTCJul 22, 14:35 UTC40m
2026-07-20 GTEMP - Jul 20, 09:35 UTCJul 20, 10:35 UTC1h 0m
2026-07-19 GTEMP - Jul 19, 14:15 UTCJul 19, 15:35 UTC1h 20m
2026-07-19 GTEMP - Jul 19, 10:35 UTCJul 19, 12:15 UTC1h 40m
2026-07-18 GTEMP - Jul 18, 15:35 UTCJul 18, 15:50 UTC15m
2026-07-17 GTEMP - Jul 17, 14:50 UTCJul 17, 16:04 UTC1h 15m
2026-07-17 GTEMP - Jul 17, 11:00 UTCJul 17, 13:35 UTC2h 35m
2026-07-16 GTEMP - Jul 16, 13:49 UTCJul 16, 14:40 UTC50m
2026-07-14 GTEMP - Jul 14, 16:00 UTCJul 14, 17:05 UTC1h 5m
2026-07-14 GTEMP - Jul 14, 12:45 UTCJul 14, 13:05 UTC20m
2026-07-13 GTEMP - Jul 13, 16:35 UTCJul 13, 17:20 UTC45m
2026-07-12 GTEMP - Jul 12, 15:50 UTCJul 12, 16:25 UTC35m
2026-07-12 GTEMP - Jul 12, 13:40 UTCJul 12, 14:35 UTC55m
2026-07-12 GTEMP - Jul 12, 08:50 UTCJul 12, 10:30 UTC1h 40m
2026-07-10 GTEMP - Jul 10, 09:40 UTCJul 10, 11:20 UTC1h 40m
2026-07-09 GTEMP - Jul 9, 09:25 UTCJul 9, 09:50 UTC25m
2026-07-06 GTEMP - Jul 6, 09:10 UTCJul 6, 09:30 UTC20m
2026-07-05 GTEMP - Jul 5, 14:05 UTCJul 5, 15:05 UTC1h 0m
2026-07-05 GTEMP - Jul 5, 08:00 UTCJul 5, 08:45 UTC45m
2026-07-04 GTEMP - Jul 4, 13:25 UTCJul 4, 14:10 UTC45m
2026-07-04 GTEMP - Jul 4, 10:40 UTCJul 4, 11:15 UTC35m
2026-07-03 GTEMP - Jul 3, 15:30 UTCJul 3, 16:50 UTC1h 20m
2026-07-02 GTEMP - Jul 2, 15:25 UTCJul 2, 16:10 UTC45m
2026-07-02 GTEMP - Jul 2, 13:30 UTCJul 2, 14:20 UTC50m
2026-06-30 GTEMP - Jun 30, 15:40 UTCJun 30, 16:30 UTC50m
2026-06-30 GTEMP - Jun 30, 13:25 UTCJun 30, 14:35 UTC1h 10m
2026-06-30 GTEMP - Jun 30, 10:40 UTCJun 30, 11:45 UTC1h 5m
2026-06-28 GTEMP - Jun 28, 13:40 UTCJun 28, 14:19 UTC40m
2026-06-28 GTEMP - Jun 28, 10:30 UTCJun 28, 11:09 UTC40m
2026-06-28 GTEMP - Jun 28, 08:50 UTCJun 28, 09:15 UTC25m
2026-06-25 GTEMP - Jun 25, 09:59 UTCJun 25, 11:15 UTC1h 15m
2026-06-25 GTEMP - Jun 25, 07:30 UTCJun 25, 09:29 UTC2h 0m
2026-06-24 GTEMP - Jun 24, 14:00 UTCJun 24, 16:59 UTC3h 0m
2026-06-24 GTEMP - Jun 24, 11:09 UTCJun 24, 13:05 UTC1h 55m
2026-06-24 GTEMP - Jun 24, 08:30 UTCJun 24, 09:45 UTC1h 15m
2026-06-21 GTEMP - Jun 21, 11:40 UTCJun 21, 12:49 UTC1h 10m
2026-06-21 GTEMP - Jun 21, 09:15 UTCJun 21, 11:00 UTC1h 45m
2026-06-20 GTEMP - Jun 20, 11:30 UTCJun 20, 12:34 UTC1h 5m
2026-06-19 GTEMP - Jun 19, 08:59 UTCJun 19, 11:04 UTC2h 5m
2026-06-18 GTEMP - Jun 18, 14:35 UTCJun 18, 15:25 UTC50m
2026-06-18 GTEMP - Jun 18, 10:40 UTCJun 18, 11:00 UTC20m
2026-06-17 GTEMP - Jun 17, 15:05 UTCJun 17, 16:00 UTC55m
2026-06-17 GTEMP - Jun 17, 13:30 UTCJun 17, 14:30 UTC1h 0m
2026-06-15 GTEMP - Jun 15, 13:20 UTCJun 15, 14:15 UTC55m
2026-06-15 GTEMP - Jun 15, 10:30 UTCJun 15, 11:39 UTC1h 10m
2026-06-14 GTEMP - Jun 14, 12:20 UTCJun 14, 14:20 UTC2h 0m
2026-06-14 GTEMP - Jun 14, 10:15 UTCJun 14, 11:20 UTC1h 5m
2026-06-13 GTEMP - Jun 13, 15:20 UTCJun 13, 16:05 UTC45m

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 G-TEMP page for operator, model, and routing details .

Mode-S 401885 frequently asked

What is Mode-S code 401885?
401885 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TEMP.
Where is Mode-S 401885 registered?
Mode-S code 401885 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 401885 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 401885, octal 20014205, decimal 4,200,581.
What flights does 401885 operate?
Mode-S 401885 has broadcast 1 distinct callsign, including GTEMP.