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sensors Mode-S transponder

4851F5

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BVR · BOEING 777-300ER

Hex
4851F5
Octal
22050765
Decimal
4,739,573
Country
NL
Tail
PH-BVR
Type
B77W
No current signal · last broadcast Jul 26, 19:20 UTC
Flights observed
194
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 19:20 UTC

Last known position

Most recent position reported by Mode-S 4851F5.

Country allocation

The ICAO 24-bit address 4851F5 falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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
KLM758 - 19 2026-07-15
KLM836 - 12 2026-07-17
KLM835 KLM Royal Dutch Airlines 12 2026-07-16
KLM104 - 12 2026-07-13
KLM590 - 11 2026-07-08
KLM105 - 9 2026-07-13
KLM744 - 8 2026-07-07
KLM743 - 8 2026-07-07
KLM188 - 8 2026-05-15
KLM248 KLM Royal Dutch Airlines 7 2026-07-23
KLM133 - 7 2026-07-22
KLM757 - 6 2026-07-05
KLM226 KLM Royal Dutch Airlines 6 2026-07-24
KLM592 KLM Royal Dutch Airlines 5 2026-07-18
KLM591 - 5 2026-07-18
KLM219 KLM Royal Dutch Airlines 5 2026-07-23
KLM792 KLM Royal Dutch Airlines 4 2026-07-26
KLM791 KLM Royal Dutch Airlines 4 2026-07-25
KLM706 KLM Royal Dutch Airlines 4 2026-04-15
KLM571 KLM Royal Dutch Airlines 4 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM843 BKK → TPE Jul 26, 15:35 UTCJul 26, 19:20 UTC3h 45m
2026-07-26 KLM792 GRU → AMS Jul 26, 01:10 UTCJul 26, 12:15 UTC11h 6m
2026-07-25 KLM791 AMS → GRU Jul 25, 11:25 UTCJul 25, 22:15 UTC10h 50m
2026-07-25 KLM646 JFK → AMS Jul 25, 00:00 UTCJul 25, 06:10 UTC6h 10m
2026-07-24 KLM207 AMS → JFK Jul 24, 13:20 UTCJul 24, 20:25 UTC7h 5m
2026-07-24 KLM226 - Jul 24, 01:05 UTCJul 24, 09:35 UTC8h 30m
2026-07-23 KLM219 AMS → YVR Jul 23, 13:45 UTCJul 23, 22:55 UTC9h 10m
2026-07-23 KLM248 ATL → AMS Jul 23, 03:00 UTCJul 23, 10:40 UTC7h 40m
2026-07-22 KLM133 - Jul 22, 15:35 UTCJul 23, 00:15 UTC8h 40m
2026-07-22 KLM226 - Jul 22, 01:55 UTCJul 22, 05:25 UTC3h 30m
2026-07-22 KLM226 - Jul 22, 01:00 UTCJul 22, 01:15 UTC15m
2026-07-21 KLM219 AMS → YVR Jul 21, 13:55 UTCJul 21, 23:00 UTC9h 5m
2026-07-21 KLM248 ATL → AMS Jul 21, 02:55 UTCJul 21, 10:45 UTC7h 50m
2026-07-20 KLM133 - Jul 20, 16:00 UTCJul 21, 00:20 UTC8h 20m
2026-07-20 KLM792 GRU → AMS Jul 20, 01:05 UTCJul 20, 11:45 UTC10h 40m
2026-07-19 KLM791 - Jul 19, 11:35 UTCJul 19, 22:35 UTC11h 0m
2026-07-18 KLM592 JNB → AMS Jul 18, 21:30 UTCJul 19, 07:50 UTC10h 20m
2026-07-18 KLM591 - Jul 18, 09:00 UTCJul 18, 19:10 UTC10h 10m
2026-07-17 KLM836 - Jul 17, 17:20 UTCJul 18, 05:45 UTC12h 26m
2026-07-16 KLM835 AMS → SIN Jul 16, 19:25 UTCJul 17, 07:30 UTC12h 5m
2026-07-16 KLM844 - Jul 16, 05:20 UTCJul 16, 16:40 UTC11h 20m
2026-07-15 KLM843 - Jul 15, 15:35 UTCJul 16, 02:15 UTC10h 40m
2026-07-15 KLM758 - Jul 15, 08:15 UTCJul 15, 10:10 UTC1h 55m
2026-07-14 KLM758 - Jul 14, 11:20 UTCJul 15, 10:10 UTC22h 49m
2026-07-13 KLM104 - Jul 13, 21:25 UTCJul 14, 08:25 UTC11h 0m
2026-07-13 KLM105 AMS → CPT Jul 13, 08:45 UTCJul 13, 19:25 UTC10h 40m
2026-07-12 KLM226 YVR → AMS Jul 12, 01:00 UTCJul 12, 09:35 UTC8h 35m
2026-07-11 KLM219 - Jul 11, 13:40 UTCJul 11, 23:00 UTC9h 20m
2026-07-10 KLM758 - Jul 10, 19:30 UTCJul 11, 10:05 UTC14h 35m
2026-07-10 KLM758 - Jul 10, 11:40 UTCJul 11, 10:05 UTC22h 25m
2026-07-09 KLM104 CPT → AMS Jul 9, 21:20 UTCJul 10, 08:40 UTC11h 20m
2026-07-09 KLM105 - Jul 9, 08:40 UTCJul 9, 19:20 UTC10h 40m
2026-07-08 KLM590 - Jul 8, 13:50 UTCJul 9, 04:35 UTC14h 45m
2026-07-07 KLM744 - Jul 7, 22:50 UTCJul 8, 10:30 UTC11h 40m
2026-07-07 KLM743 - Jul 7, 08:25 UTCJul 7, 20:00 UTC11h 35m
2026-07-06 KLM590 - Jul 6, 13:35 UTCJul 7, 04:25 UTC14h 50m
2026-07-05 KLM758 - Jul 5, 19:15 UTCJul 6, 10:05 UTC14h 50m
2026-07-05 KLM757 - Jul 5, 11:45 UTCJul 6, 10:05 UTC22h 20m
2026-07-04 KLM836 SIN → AMS Jul 4, 17:20 UTCJul 4, 22:20 UTC5h 0m
2026-07-03 KLM835 - Jul 3, 19:25 UTCJul 4, 07:15 UTC11h 50m
2026-07-02 KLM590 - Jul 2, 14:20 UTCJul 3, 04:45 UTC14h 25m
2026-07-02 KLM248 - Jul 2, 02:55 UTCJul 2, 10:25 UTC7h 30m
2026-07-01 KLM133 - Jul 1, 15:45 UTCJul 2, 00:15 UTC8h 30m
2026-07-01 KLM792 - Jul 1, 01:05 UTCJul 1, 12:10 UTC11h 5m
2026-06-30 KLM791 AMS → GRU Jun 30, 11:35 UTCJun 30, 22:50 UTC11h 15m
2026-06-29 KLM592 - Jun 29, 22:00 UTCJun 30, 08:05 UTC10h 6m
2026-06-29 KLM591 AMS → JNB Jun 29, 09:34 UTCJun 29, 19:35 UTC10h 0m
2026-06-28 KLM836 SIN → AMS Jun 28, 17:25 UTCJun 29, 05:54 UTC12h 30m
2026-06-28 KLM836 SIN → AMS Jun 28, 14:59 UTCJun 28, 15:09 UTC10m
2026-06-27 KLM835 - Jun 27, 19:24 UTCJun 28, 07:25 UTC12h 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 PH-BVR page for operator, model, and routing details .

Mode-S 4851F5 frequently asked

What is Mode-S code 4851F5?
4851F5 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BVR.
Where is Mode-S 4851F5 registered?
Mode-S code 4851F5 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4851F5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4851F5, octal 22050765, decimal 4,739,573.
What flights does 4851F5 operate?
Mode-S 4851F5 has broadcast 20 distinct callsigns, including KLM758, KLM836, KLM835, KLM104, KLM590.