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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 1h ago
Flights observed
170
Distinct callsigns
20
Country
NL
Last broadcast
1h ago

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 - 17 2026-07-10
KLM104 - 12 2026-07-13
KLM836 KLM Royal Dutch Airlines 11 2026-07-04
KLM835 - 11 2026-07-03
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
KLM757 - 6 2026-07-05
KLM248 - 5 2026-07-02
KLM133 - 5 2026-07-01
KLM706 KLM Royal Dutch Airlines 4 2026-04-15
KLM592 - 4 2026-06-29
KLM591 KLM Royal Dutch Airlines 4 2026-06-29
KLM571 KLM Royal Dutch Airlines 4 2026-06-18
KLM896 - 3 2026-06-20
KLM705 KLM Royal Dutch Airlines 3 2026-04-14
KLM569 KLM Royal Dutch Airlines 3 2026-06-01
KLM226 - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KLM104 - Jul 13, 21:25 UTCJul 14, 01:05 UTC3h 40m
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
2026-06-27 KLM248 ATL → AMS Jun 27, 02:55 UTCJun 27, 10:40 UTC7h 45m
2026-06-26 KLM133 AMS → ATL Jun 26, 15:34 UTCJun 27, 00:20 UTC8h 45m
2026-06-25 KLM758 - Jun 25, 19:20 UTCJun 26, 09:55 UTC14h 35m
2026-06-25 KLM758 - Jun 25, 11:30 UTCJun 26, 09:55 UTC22h 25m
2026-06-24 KLM104 CPT → AMS Jun 24, 21:29 UTCJun 25, 08:45 UTC11h 15m
2026-06-24 KLM105 - Jun 24, 18:39 UTCJun 24, 19:04 UTC25m
2026-06-24 KLM105 - Jun 24, 08:24 UTCJun 24, 16:09 UTC7h 45m
2026-06-23 KLM878 - Jun 23, 20:54 UTCJun 24, 05:40 UTC8h 45m
2026-06-23 KLM877 - Jun 23, 10:10 UTCJun 23, 17:34 UTC7h 25m
2026-06-20 KLM896 - Jun 20, 23:04 UTCJun 21, 17:05 UTC18h 0m
2026-06-20 KLM896 - Jun 20, 17:19 UTCJun 21, 17:05 UTC23h 45m
2026-06-20 KLM896 - Jun 20, 15:19 UTCJun 21, 15:15 UTC23h 55m
2026-06-20 KLM895 - Jun 20, 13:29 UTCJun 21, 13:15 UTC23h 45m
2026-06-19 KLM744 - Jun 19, 18:44 UTCJun 20, 10:20 UTC15h 35m
2026-06-19 KLM744 - Jun 19, 09:19 UTCJun 20, 09:14 UTC23h 55m
2026-06-19 KLM743 - Jun 19, 08:14 UTCJun 20, 02:19 UTC18h 5m
2026-06-18 KLM571 DAR → AMS Jun 18, 08:35 UTCJun 18, 16:20 UTC7h 45m
2026-06-14 KLM590 - Jun 14, 13:25 UTCJun 15, 04:50 UTC15h 24m
2026-06-13 KLM744 LIM → AMS Jun 13, 18:55 UTCJun 14, 10:15 UTC15h 20m
2026-06-13 KLM743 AMS → LIM Jun 13, 09:20 UTCJun 14, 09:15 UTC23h 55m
2026-06-13 KLM743 AMS → LIM Jun 13, 08:45 UTCJun 13, 23:05 UTC14h 20m
2026-06-12 KLM888 - Jun 12, 22:40 UTCJun 13, 03:35 UTC4h 55m
2026-06-12 KLM888 HKG → AMS Jun 12, 14:40 UTCJun 12, 14:50 UTC10m
2026-06-11 KLM887 AMS → HKG Jun 11, 21:40 UTCJun 12, 06:15 UTC8h 36m

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 1h ago.
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, KLM104, KLM836, KLM835, KLM590.