Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4843F2

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BQO · BOEING 777-200

Hex
4843F2
Octal
22041762
Decimal
4,735,986
Country
NL
Tail
PH-BQO
Type
B772
No current signal · last broadcast 1h ago
Flights observed
166
Distinct callsigns
20
Country
NL
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4843F2.

Country allocation

The ICAO 24-bit address 4843F2 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
KLM702 - 18 2026-06-13
KLM701 - 14 2026-07-14
KLM874 - 10 2026-07-07
KLM268 - 9 2026-07-03
KLM862 - 8 2026-06-12
KLM878 - 6 2026-07-06
KLM686 - 6 2026-07-12
KLM685 - 6 2026-07-11
KLM896 KLM Royal Dutch Airlines 5 2026-05-20
KLM877 - 5 2026-07-06
KLM861 KLM Royal Dutch Airlines 5 2026-06-11
KLM610 - 4 2026-07-13
KLM609 - 4 2026-07-12
KLM895 KLM Royal Dutch Airlines 3 2026-05-19
KLM844 - 3 2026-07-14
KLM843 - 3 2026-07-13
KLM646 - 3 2026-06-30
KLM636 KLM Royal Dutch Airlines 3 2026-05-29
KLM635 KLM Royal Dutch Airlines 3 2026-05-28
KLM207 - 3 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KLM701 - Jul 14, 19:30 UTCJul 14, 20:30 UTC1h 0m
2026-07-14 KLM844 - Jul 14, 05:25 UTCJul 14, 16:55 UTC11h 30m
2026-07-13 KLM843 - Jul 13, 15:30 UTCJul 14, 02:05 UTC10h 35m
2026-07-13 KLM610 SLC → AMS Jul 13, 04:15 UTCJul 13, 12:50 UTC8h 35m
2026-07-12 KLM609 - Jul 12, 15:50 UTCJul 13, 01:20 UTC9h 30m
2026-07-12 KLM686 - Jul 12, 02:40 UTCJul 12, 12:45 UTC10h 5m
2026-07-11 KLM685 - Jul 11, 12:55 UTCJul 12, 00:15 UTC11h 20m
2026-07-10 KLM104 - Jul 10, 21:15 UTCJul 11, 08:25 UTC11h 10m
2026-07-10 KLM105 AMS → CPT Jul 10, 08:35 UTCJul 10, 19:15 UTC10h 40m
2026-07-09 KLM808 - Jul 9, 16:35 UTCJul 10, 06:10 UTC13h 35m
2026-07-09 KLM808 - Jul 9, 12:45 UTCJul 9, 14:50 UTC2h 5m
2026-07-09 KLM807 - Jul 9, 08:30 UTCJul 9, 10:20 UTC1h 50m
2026-07-08 KLM807 AMS → TPE Jul 8, 18:30 UTCJul 9, 06:35 UTC12h 5m
2026-07-07 KLM874 - Jul 7, 12:35 UTCJul 8, 06:35 UTC18h 0m
2026-07-07 KLM874 - Jul 7, 10:35 UTCJul 8, 06:35 UTC20h 0m
2026-07-07 KLM874 AMS → AMS Jul 7, 10:05 UTCJul 8, 06:35 UTC20h 30m
2026-07-06 KLM878 - Jul 6, 20:45 UTCJul 7, 05:50 UTC9h 5m
2026-07-06 KLM877 AMS → BOM Jul 6, 10:00 UTCJul 6, 18:35 UTC8h 35m
2026-07-05 KLM192 - Jul 5, 21:45 UTCJul 6, 06:05 UTC8h 20m
2026-07-05 KLM661 - Jul 5, 09:45 UTCJul 5, 19:20 UTC9h 35m
2026-07-03 KLM268 - Jul 3, 08:35 UTCJul 4, 03:50 UTC19h 15m
2026-07-03 KLM195 - Jul 3, 07:20 UTCJul 4, 03:50 UTC20h 30m
2026-07-02 KLM296 IAD → AMS Jul 2, 22:30 UTCJul 3, 05:00 UTC6h 30m
2026-07-02 KLM225 AMS → IAD Jul 2, 11:35 UTCJul 2, 19:40 UTC8h 5m
2026-07-02 KLM644 - Jul 2, 01:55 UTCJul 2, 08:10 UTC6h 15m
2026-07-01 KLM643 - Jul 1, 15:55 UTCJul 1, 23:20 UTC7h 25m
2026-07-01 KLM686 - Jul 1, 03:15 UTCJul 1, 13:20 UTC10h 5m
2026-06-30 KLM685 - Jun 30, 12:45 UTCJun 30, 23:50 UTC11h 5m
2026-06-30 KLM646 JFK → AMS Jun 30, 00:04 UTCJun 30, 06:25 UTC6h 20m
2026-06-29 KLM207 - Jun 29, 13:24 UTCJun 29, 20:44 UTC7h 20m
2026-06-29 KLM174 - Jun 29, 01:50 UTCJun 29, 05:30 UTC3h 40m
2026-06-28 KLM565 - Jun 28, 11:04 UTCJun 28, 14:50 UTC3h 45m
2026-06-26 KLM280 - Jun 26, 10:35 UTCJun 27, 05:15 UTC18h 40m
2026-06-26 KLM280 - Jun 26, 08:40 UTCJun 27, 05:15 UTC20h 35m
2026-06-25 KLM250 MSP → AMS Jun 25, 20:25 UTCJun 26, 04:00 UTC7h 35m
2026-06-25 KLM655 - Jun 25, 09:14 UTCJun 25, 17:20 UTC8h 5m
2026-06-25 KLM646 JFK → AMS Jun 25, 00:35 UTCJun 25, 06:44 UTC6h 10m
2026-06-24 KLM207 AMS → JFK Jun 24, 13:50 UTCJun 24, 21:14 UTC7h 25m
2026-06-23 KLM642 JFK → AMS Jun 23, 21:05 UTCJun 24, 03:35 UTC6h 30m
2026-06-23 KLM641 AMS → JFK Jun 23, 10:59 UTCJun 23, 18:25 UTC7h 25m
2026-06-23 KLM644 JFK → AMS Jun 23, 01:54 UTCJun 23, 08:09 UTC6h 15m
2026-06-22 KLM643 - Jun 22, 15:54 UTCJun 22, 23:20 UTC7h 25m
2026-06-22 KLM686 - Jun 22, 02:59 UTCJun 22, 12:44 UTC9h 45m
2026-06-21 KLM685 - Jun 21, 12:49 UTCJun 21, 23:50 UTC11h 0m
2026-06-20 KLM166 AUS → AMS Jun 20, 23:34 UTCJun 21, 08:30 UTC8h 55m
2026-06-20 KLM115 AMS → AUS Jun 20, 11:05 UTCJun 20, 20:55 UTC9h 50m
2026-06-19 KLM874 - Jun 19, 10:35 UTCJun 20, 06:19 UTC19h 45m
2026-06-19 KLM874 AMS → AMS Jun 19, 10:19 UTCJun 20, 06:19 UTC20h 0m
2026-06-17 KLM250 - Jun 17, 20:55 UTCJun 18, 04:20 UTC7h 25m
2026-06-17 KLM655 AMS → MSP Jun 17, 09:15 UTCJun 17, 17:15 UTC8h 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-BQO page for operator, model, and routing details .

Mode-S 4843F2 frequently asked

What is Mode-S code 4843F2?
4843F2 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BQO.
Where is Mode-S 4843F2 registered?
Mode-S code 4843F2 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4843F2 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 4843F2, octal 22041762, decimal 4,735,986.
What flights does 4843F2 operate?
Mode-S 4843F2 has broadcast 20 distinct callsigns, including KLM702, KLM701, KLM874, KLM268, KLM862.