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sensors Mode-S transponder

4851F6

ICAO 24-bit transponder address · allocated to Netherlands

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

Hex
4851F6
Octal
22050766
Decimal
4,739,574
Country
NL
Tail
PH-BVS
Type
B77W
No current signal · last broadcast Jul 26, 19:00 UTC
Flights observed
157
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 19:00 UTC

Last known position

Most recent position reported by Mode-S 4851F6.

Country allocation

The ICAO 24-bit address 4851F6 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
KLM836 KLM Royal Dutch Airlines 13 2026-07-22
KLM758 - 12 2026-07-18
KLM248 - 12 2026-07-11
KLM133 - 12 2026-07-10
KLM791 KLM Royal Dutch Airlines 11 2026-07-24
KLM835 KLM Royal Dutch Airlines 9 2026-07-21
KLM792 KLM Royal Dutch Airlines 9 2026-07-25
KLM757 KLM Royal Dutch Airlines 8 2026-07-18
KLM592 KLM Royal Dutch Airlines 8 2026-07-23
KLM591 KLM Royal Dutch Airlines 8 2026-07-23
KLM590 KLM Royal Dutch Airlines 5 2026-07-19
KLM105 KLM Royal Dutch Airlines 5 2026-06-23
KLM104 - 5 2026-06-24
KLM744 KLM Royal Dutch Airlines 4 2026-07-20
KLM743 KLM Royal Dutch Airlines 4 2026-07-26
KLM844 - 3 2026-07-06
KLM843 - 3 2026-07-05
KLM226 - 3 2026-07-16
KLM219 - 3 2026-07-15
KLM188 - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM743 AMS → LIM Jul 26, 08:20 UTCJul 26, 19:00 UTC10h 40m
2026-07-25 KLM792 GRU → AMS Jul 25, 01:05 UTCJul 25, 12:10 UTC11h 5m
2026-07-24 KLM791 AMS → GRU Jul 24, 11:20 UTCJul 24, 22:30 UTC11h 10m
2026-07-23 KLM592 JNB → AMS Jul 23, 21:20 UTCJul 24, 07:55 UTC10h 35m
2026-07-23 KLM591 AMS → JNB Jul 23, 08:55 UTCJul 23, 19:00 UTC10h 5m
2026-07-22 KLM836 SIN → AMS Jul 22, 17:40 UTCJul 23, 06:05 UTC12h 25m
2026-07-21 KLM835 AMS → SIN Jul 21, 19:20 UTCJul 22, 05:20 UTC10h 0m
2026-07-20 KLM744 LIM → AMS Jul 20, 23:30 UTCJul 21, 10:30 UTC10h 59m
2026-07-20 KLM743 AMS → LIM Jul 20, 08:20 UTCJul 20, 19:40 UTC11h 20m
2026-07-19 KLM590 ACC → AMS Jul 19, 13:35 UTCJul 20, 04:20 UTC14h 45m
2026-07-18 KLM758 - Jul 18, 18:55 UTCJul 19, 10:10 UTC15h 15m
2026-07-18 KLM757 AMS → PTY Jul 18, 11:35 UTCJul 19, 10:10 UTC22h 35m
2026-07-18 KLM757 AMS → PTY Jul 18, 11:20 UTCJul 19, 09:30 UTC22h 10m
2026-07-17 KLM896 - Jul 17, 05:15 UTCJul 17, 13:40 UTC8h 25m
2026-07-16 KLM896 - Jul 16, 15:35 UTCJul 17, 13:40 UTC22h 5m
2026-07-16 KLM895 - Jul 16, 13:40 UTCJul 17, 13:29 UTC23h 50m
2026-07-16 KLM226 - Jul 16, 01:05 UTCJul 16, 09:50 UTC8h 45m
2026-07-15 KLM219 - Jul 15, 13:45 UTCJul 15, 22:50 UTC9h 5m
2026-07-14 KLM296 IAD → AMS Jul 14, 22:15 UTCJul 15, 05:20 UTC7h 4m
2026-07-14 KLM225 - Jul 14, 12:50 UTCJul 14, 20:10 UTC7h 20m
2026-07-13 KLM758 - Jul 13, 19:35 UTCJul 14, 09:55 UTC14h 20m
2026-07-13 KLM758 - Jul 13, 11:35 UTCJul 14, 09:55 UTC22h 20m
2026-07-13 KLM757 - Jul 13, 11:25 UTCJul 14, 09:30 UTC22h 5m
2026-07-12 KLM188 - Jul 12, 19:20 UTCJul 13, 08:01 UTC12h 40m
2026-07-12 KLM163 - Jul 12, 11:55 UTCJul 13, 08:01 UTC20h 5m
2026-07-11 KLM590 - Jul 11, 14:05 UTCJul 12, 04:30 UTC14h 25m
2026-07-11 KLM248 ATL → AMS Jul 11, 03:15 UTCJul 11, 11:00 UTC7h 45m
2026-07-10 KLM133 AMS → ATL Jul 10, 15:30 UTCJul 11, 00:20 UTC8h 50m
2026-07-10 KLM226 YVR → AMS Jul 10, 01:05 UTCJul 10, 09:35 UTC8h 30m
2026-07-09 KLM219 - Jul 9, 13:55 UTCJul 9, 22:50 UTC8h 55m
2026-07-08 KLM758 - Jul 8, 19:45 UTCJul 9, 10:00 UTC14h 15m
2026-07-08 KLM757 - Jul 8, 11:35 UTCJul 9, 10:00 UTC22h 25m
2026-07-08 KLM757 - Jul 8, 11:20 UTCJul 9, 09:30 UTC22h 10m
2026-07-06 KLM844 - Jul 6, 05:25 UTCJul 6, 17:00 UTC11h 35m
2026-07-05 KLM843 - Jul 5, 15:45 UTCJul 6, 02:20 UTC10h 35m
2026-07-05 KLM792 - Jul 5, 01:15 UTCJul 5, 12:10 UTC10h 55m
2026-07-04 KLM791 AMS → GRU Jul 4, 11:35 UTCJul 4, 22:50 UTC11h 15m
2026-07-03 KLM592 - Jul 3, 22:00 UTCJul 4, 08:15 UTC10h 15m
2026-07-03 KLM591 AMS → JNB Jul 3, 09:25 UTCJul 3, 19:30 UTC10h 5m
2026-07-02 KLM844 - Jul 2, 05:10 UTCJul 2, 16:40 UTC11h 30m
2026-07-01 KLM843 - Jul 1, 15:50 UTCJul 2, 02:00 UTC10h 10m
2026-07-01 KLM248 ATL → AMS Jul 1, 03:00 UTCJul 1, 10:45 UTC7h 45m
2026-06-30 KLM133 AMS → ATL Jun 30, 16:00 UTCJul 1, 00:30 UTC8h 30m
2026-06-30 KLM248 - Jun 30, 02:55 UTCJun 30, 10:35 UTC7h 40m
2026-06-29 KLM133 - Jun 29, 15:45 UTCJun 30, 00:14 UTC8h 30m
2026-06-28 KLM592 - Jun 28, 21:30 UTCJun 29, 07:50 UTC10h 20m
2026-06-28 KLM591 AMS → JNB Jun 28, 09:25 UTCJun 28, 19:20 UTC9h 55m
2026-06-27 KLM836 SIN → AMS Jun 27, 17:34 UTCJun 28, 06:05 UTC12h 30m
2026-06-26 KLM835 - Jun 26, 20:04 UTCJun 27, 07:55 UTC11h 50m
2026-06-26 KLM248 ATL → AMS Jun 26, 03:54 UTCJun 26, 11:20 UTC7h 25m

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

Mode-S 4851F6 frequently asked

What is Mode-S code 4851F6?
4851F6 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BVS.
Where is Mode-S 4851F6 registered?
Mode-S code 4851F6 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4851F6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4851F6, octal 22050766, decimal 4,739,574.
What flights does 4851F6 operate?
Mode-S 4851F6 has broadcast 20 distinct callsigns, including KLM836, KLM758, KLM248, KLM133, KLM791.