Apparatus

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sensors Mode-S transponder

4012DA

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CEWM · DE HAVILLAND DHC-6 Twin Otter

Hex
4012DA
Octal
20011332
Decimal
4,199,130
Country
GB
Tail
G-CEWM
Type
DHC6
No current signal · last broadcast 2h ago
Flights observed
179
Distinct callsigns
20
Country
GB
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4012DA.

Country allocation

The ICAO 24-bit address 4012DA 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 20 distinct

Callsign Airline Flights Last seen
AUR506 Aurigny Air Services 19 2026-06-04
AUR501 Aurigny Air Services 18 2026-06-05
AUR505 Aurigny Air Services 17 2026-06-02
AUR502 Aurigny Air Services 17 2026-06-04
AUR202 Aurigny Air Services 11 2026-06-05
AUR215 Aurigny Air Services 9 2026-06-04
AUR209 Aurigny Air Services 8 2026-06-05
IOS240 - 7 2026-05-06
IOS224 - 6 2026-05-06
AUR205 Aurigny Air Services 6 2026-05-30
GCEWM - 5 2026-05-12
AUR999 Aurigny Air Services 5 2026-06-02
AUR214 Aurigny Air Services 5 2026-05-27
AUR206 Aurigny Air Services 5 2026-05-25
AUR201 Aurigny Air Services 5 2026-06-04
AUR998 Aurigny Air Services 4 2026-05-31
AUR101P Aurigny Air Services 4 2026-05-29
IOS275 - 2 2026-05-05
IOS266 - 2 2026-05-05
IOS265 - 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 AUR102P - Jun 5, 12:10 UTCJun 5, 13:05 UTC55m
2026-06-05 AUR209 ACI → GCI Jun 5, 11:15 UTCJun 5, 11:35 UTC20m
2026-06-05 AUR501 ACI → SOU Jun 5, 08:45 UTCJun 5, 10:40 UTC1h 55m
2026-06-05 AUR202 GCI → ACI Jun 5, 07:55 UTCJun 5, 08:10 UTC15m
2026-06-05 AUR200 GCI → ACI Jun 5, 06:30 UTCJun 5, 07:25 UTC55m
2026-06-04 AUR215 ACI → GCI Jun 4, 16:30 UTCJun 4, 17:20 UTC50m
2026-06-04 AUR209 ACI → GCI Jun 4, 15:25 UTCJun 4, 15:45 UTC20m
2026-06-04 AUR506 SOU → ACI Jun 4, 13:55 UTCJun 4, 14:40 UTC45m
2026-06-04 AUR502 SOU → ACI Jun 4, 10:05 UTCJun 4, 13:25 UTC3h 20m
2026-06-04 AUR501 ACI → SOU Jun 4, 08:40 UTCJun 4, 09:40 UTC1h 0m
2026-06-04 AUR201 ACI → GCI Jun 4, 06:25 UTCJun 4, 08:05 UTC1h 40m
2026-06-03 AUR502 SOU → ACI Jun 3, 12:35 UTCJun 3, 18:35 UTC6h 0m
2026-06-03 AUR501 ACI → SOU Jun 3, 09:00 UTCJun 3, 09:40 UTC40m
2026-06-03 AUR202 GCI → ACI Jun 3, 06:25 UTCJun 3, 08:25 UTC2h 0m
2026-06-02 AUR215 ACI → GCI Jun 2, 18:20 UTCJun 2, 19:15 UTC55m
2026-06-02 AUR506 SOU → ACI Jun 2, 16:35 UTCJun 2, 17:50 UTC1h 15m
2026-06-02 AUR505 ACI → SOU Jun 2, 15:20 UTCJun 2, 16:00 UTC40m
2026-06-02 AUR999 ACI → GCI Jun 2, 11:25 UTCJun 2, 14:50 UTC3h 25m
2026-06-02 AUR502 SOU → ACI Jun 2, 10:10 UTCJun 2, 10:50 UTC40m
2026-06-02 AUR501 ACI → SOU Jun 2, 08:50 UTCJun 2, 09:30 UTC40m
2026-06-02 AUR202 GCI → ACI Jun 2, 06:35 UTCJun 2, 08:10 UTC1h 35m
2026-06-01 AUR501 ACI → SOU Jun 1, 11:05 UTCJun 1, 14:35 UTC3h 30m
2026-05-31 AUR999 ACI → GCI May 31, 20:15 UTCMay 31, 20:45 UTC30m
2026-05-31 AUR998 GCI → ACI May 31, 18:45 UTCMay 31, 19:00 UTC15m
2026-05-31 AUR215 ACI → GCI May 31, 17:00 UTCMay 31, 18:15 UTC1h 15m
2026-05-31 AUR209 ACI → GCI May 31, 16:05 UTCMay 31, 16:25 UTC20m
2026-05-31 AUR506 SOU → ACI May 31, 14:50 UTCMay 31, 15:30 UTC40m
2026-05-31 AUR505 ACI → SOU May 31, 13:00 UTCMay 31, 14:10 UTC1h 10m
2026-05-31 AUR501 ACI → SOU May 31, 08:50 UTCMay 31, 12:10 UTC3h 20m
2026-05-30 AUR506 SOU → ACI May 30, 16:55 UTCMay 30, 19:10 UTC2h 15m
2026-05-30 AUR506 SOU → ACI May 30, 16:40 UTCMay 30, 16:50 UTC10m
2026-05-30 AUR505 ACI → SOU May 30, 14:55 UTCMay 30, 16:30 UTC1h 35m
2026-05-30 AUR205 ACI → GCI May 30, 11:25 UTCMay 30, 11:40 UTC15m
2026-05-30 AUR502 SOU → ACI May 30, 10:05 UTCMay 30, 10:50 UTC45m
2026-05-30 AUR501 ACI → SOU May 30, 08:45 UTCMay 30, 09:25 UTC40m
2026-05-30 AUR201 ACI → GCI May 30, 07:10 UTCMay 30, 08:05 UTC55m
2026-05-29 AUR506 SOU → ACI May 29, 17:05 UTCMay 29, 19:05 UTC2h 0m
2026-05-29 AUR101P GCI → LEJ May 29, 13:55 UTCMay 29, 16:30 UTC2h 35m
2026-05-28 AUR101P GCI → LEJ May 28, 16:15 UTCMay 28, 17:40 UTC1h 25m
2026-05-28 AUR505 ACI → SOU May 28, 12:05 UTCMay 28, 13:25 UTC1h 20m
2026-05-27 AUR215 ACI → GCI May 27, 17:05 UTCMay 27, 17:20 UTC15m
2026-05-27 AUR214 GCI → ACI May 27, 16:25 UTCMay 27, 16:35 UTC10m
2026-05-27 AUR209 ACI → GCI May 27, 15:30 UTCMay 27, 15:50 UTC20m
2026-05-27 AUR506 SOU → ACI May 27, 14:00 UTCMay 27, 14:40 UTC40m
2026-05-27 AUR505 ACI → SOU May 27, 12:05 UTCMay 27, 13:25 UTC1h 20m
2026-05-26 AUR502 SOU → ACI May 26, 11:20 UTCMay 26, 12:50 UTC1h 30m
2026-05-26 AUR202 GCI → ACI May 26, 07:40 UTCMay 26, 10:39 UTC3h 0m
2026-05-25 AUR215 ACI → GCI May 25, 18:15 UTCMay 25, 19:05 UTC50m
2026-05-25 AUR999 ACI → GCI May 25, 16:50 UTCMay 25, 17:20 UTC30m
2026-05-25 AUR998 GCI → ACI May 25, 15:25 UTCMay 25, 15:35 UTC10m

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-CEWM page for operator, model, and routing details .

Mode-S 4012DA frequently asked

What is Mode-S code 4012DA?
4012DA is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CEWM.
Where is Mode-S 4012DA registered?
Mode-S code 4012DA 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 4012DA broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4012DA, octal 20011332, decimal 4,199,130.
What flights does 4012DA operate?
Mode-S 4012DA has broadcast 20 distinct callsigns, including AUR506, AUR501, AUR505, AUR502, AUR202.