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sensors Mode-S transponder

407D8F

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-ZAHS · DASSAULT Falcon 900 · operated by Government of United Kingdom

Hex
407D8F
Octal
20076617
Decimal
4,226,447
Country
GB
Tail
G-ZAHS
Type
F900
No current signal · last broadcast 13h ago
Flights observed
58
Distinct callsigns
20
Country
GB
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 407D8F.

Country allocation

The ICAO 24-bit address 407D8F 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
RRR7223 - 5 2026-06-20
RRR1320 - 5 2026-06-02
RRR1406 - 3 2026-06-03
RRR1326 - 3 2026-07-13
RRR1245 - 3 2026-06-16
RRR1241 - 3 2026-06-12
RRR1950 - 2 2026-07-13
RRR1945 - 2 2026-06-23
RRR1940 - 2 2026-06-04
RRR1511 - 2 2026-06-25
RRR1506 - 2 2026-06-09
RRR1323 - 2 2026-06-30
RRR1248 - 2 2026-07-05
RRR1247 - 2 2026-06-05
RRR1243 - 2 2026-06-14
RRR1145 - 2 2026-07-10
KRF47 - 2 2026-07-17
KRF40 - 2 2026-07-08
KRF19R - 2 2026-07-14
RRR1149 - 1 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 RRR1149 WTN → NHT Jul 17, 16:40 UTCJul 17, 17:20 UTC40m
2026-07-17 KRF49 TLL → WTN Jul 17, 13:25 UTCJul 17, 16:00 UTC2h 35m
2026-07-17 RRF49 - Jul 17, 09:40 UTCJul 17, 12:04 UTC2h 25m
2026-07-17 KRF47 RZE → NHT Jul 17, 05:30 UTCJul 17, 07:40 UTC2h 10m
2026-07-15 KRF47 - Jul 15, 14:55 UTCJul 15, 17:10 UTC2h 15m
2026-07-14 KRF19R - Jul 14, 14:45 UTCJul 14, 15:30 UTC45m
2026-07-14 KRF19R - Jul 14, 10:15 UTCJul 14, 11:05 UTC50m
2026-07-13 RRR1950 ABZ → NHT Jul 13, 15:15 UTCJul 13, 16:15 UTC1h 0m
2026-07-13 RRR1950 NHT → ABZ Jul 13, 13:00 UTCJul 13, 14:00 UTC1h 0m
2026-07-13 RRR1326 ORF → NHT Jul 13, 00:10 UTCJul 13, 07:20 UTC7h 10m
2026-07-11 RRR1326 - Jul 11, 23:35 UTCJul 11, 23:50 UTC15m
2026-07-11 RRR1326 - Jul 11, 15:40 UTCJul 11, 23:30 UTC7h 50m
2026-07-10 RRR1145 RZE → NHT Jul 10, 07:50 UTCJul 10, 10:10 UTC2h 20m
2026-07-09 RRR1145 NHT → RZE Jul 9, 13:30 UTCJul 9, 15:40 UTC2h 10m
2026-07-08 KRF40 - Jul 8, 17:15 UTCJul 8, 21:30 UTC4h 15m
2026-07-07 KRF40 - Jul 7, 06:10 UTCJul 7, 10:00 UTC3h 50m
2026-07-05 RRR1248 TEB → NHT Jul 5, 14:15 UTCJul 5, 21:10 UTC6h 55m
2026-07-03 RRR1248 - Jul 3, 14:40 UTCJul 3, 22:35 UTC7h 55m
2026-07-02 KRF18R EDI → NHT Jul 2, 13:15 UTCJul 2, 14:05 UTC50m
2026-07-02 RRF18 - Jul 2, 10:25 UTCJul 2, 11:30 UTC1h 5m
2026-07-01 RRR1015 - Jul 1, 15:35 UTCJul 1, 16:05 UTC30m
2026-07-01 KRF15R - Jul 1, 13:50 UTCJul 1, 14:35 UTC45m
2026-07-01 RRF15 - Jul 1, 11:00 UTCJul 1, 12:05 UTC1h 5m
2026-06-30 RRR1323 VNO → NHT Jun 30, 11:30 UTCJun 30, 14:25 UTC2h 55m
2026-06-29 RRR1323 - Jun 29, 11:55 UTCJun 29, 14:19 UTC2h 25m
2026-06-25 RRR1511 - Jun 25, 14:24 UTCJun 25, 15:40 UTC1h 15m
2026-06-25 RRR1511 - Jun 25, 12:25 UTCJun 25, 13:24 UTC1h 0m
2026-06-24 RRR1017 ABZ → NHT Jun 24, 19:20 UTCJun 24, 20:30 UTC1h 10m
2026-06-24 KRF17R NHT → ABZ Jun 24, 17:05 UTCJun 24, 18:09 UTC1h 5m
2026-06-23 RRR1945 BOD → NHT Jun 23, 11:24 UTCJun 23, 12:35 UTC1h 10m
2026-06-23 RRR1945 - Jun 23, 08:45 UTCJun 23, 09:59 UTC1h 15m
2026-06-20 RRR7223 - Jun 20, 13:04 UTCJun 20, 18:19 UTC5h 15m
2026-06-19 RRR7223 - Jun 19, 19:49 UTCJun 19, 20:04 UTC15m
2026-06-18 RRR7223 - Jun 18, 08:30 UTCJun 18, 11:40 UTC3h 10m
2026-06-17 RRR7223 - Jun 17, 14:20 UTCJun 17, 14:45 UTC25m
2026-06-17 RRR7223 - Jun 17, 11:50 UTCJun 17, 13:30 UTC1h 40m
2026-06-16 RRR1245 - Jun 16, 16:39 UTCJun 16, 19:30 UTC2h 50m
2026-06-15 RRR1245 - Jun 15, 14:34 UTCJun 15, 15:10 UTC35m
2026-06-15 RRR1245 - Jun 15, 09:10 UTCJun 15, 11:49 UTC2h 40m
2026-06-14 RRR1243 RZE → NHT Jun 14, 15:20 UTCJun 14, 17:35 UTC2h 15m
2026-06-14 RRR1243 - Jun 14, 12:40 UTCJun 14, 14:45 UTC2h 5m
2026-06-12 RRR1241 BRU → NHT Jun 12, 13:30 UTCJun 12, 14:20 UTC50m
2026-06-11 RRR1241 IAD → BRU Jun 11, 16:40 UTCJun 12, 00:30 UTC7h 50m
2026-06-09 RRR1241 - Jun 9, 17:45 UTCJun 10, 01:15 UTC7h 30m
2026-06-09 RRR1506 - Jun 9, 12:35 UTCJun 9, 15:00 UTC2h 25m
2026-06-09 RRR1506 - Jun 9, 07:05 UTCJun 9, 09:45 UTC2h 40m
2026-06-05 RRR1247 - Jun 5, 17:10 UTCJun 5, 17:55 UTC45m
2026-06-05 RRR1247 - Jun 5, 15:30 UTCJun 5, 16:15 UTC45m
2026-06-04 RRR1940 - Jun 4, 12:40 UTCJun 4, 13:45 UTC1h 5m
2026-06-04 RRR1940 - Jun 4, 09:50 UTCJun 4, 10:50 UTC1h 0m

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

Mode-S 407D8F frequently asked

What is Mode-S code 407D8F?
407D8F is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-ZAHS.
Where is Mode-S 407D8F registered?
Mode-S code 407D8F 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 407D8F broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407D8F, octal 20076617, decimal 4,226,447.
What flights does 407D8F operate?
Mode-S 407D8F has broadcast 20 distinct callsigns, including RRR7223, RRR1320, RRR1406, RRR1326, RRR1245.