Apparatus

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sensors Mode-S transponder

485A34

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BCK · BOEING 737-800

Hex
485A34
Octal
22055064
Decimal
4,741,684
Country
NL
Tail
PH-BCK
Type
B738
No current signal · last broadcast 1h ago
Flights observed
573
Distinct callsigns
20
Country
NL
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 485A34.

Country allocation

The ICAO 24-bit address 485A34 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
KLM67E - 9 2026-06-17
KLM92Y - 8 2026-06-17
KLM99D - 7 2026-07-12
KLM1961 KLM Royal Dutch Airlines 7 2026-06-07
KLM1958 KLM Royal Dutch Airlines 7 2026-06-08
KLM14D - 7 2026-07-12
KLM95U - 6 2026-07-08
KLM959 KLM Royal Dutch Airlines 6 2026-05-18
KLM941 KLM Royal Dutch Airlines 6 2026-06-26
KLM88U KLM Royal Dutch Airlines 6 2026-05-18
KLM68B - 6 2026-06-26
KLM67Q KLM Royal Dutch Airlines 6 2026-06-04
KLM62R KLM Royal Dutch Airlines 6 2026-06-18
KLM60H KLM Royal Dutch Airlines 6 2026-06-16
KLM45Q - 6 2026-07-03
KLM28W KLM Royal Dutch Airlines 6 2026-06-04
KLM25J - 6 2026-06-16
KLM24M - 6 2026-07-09
KLM1375 - 6 2026-06-18
KLM1266 - 6 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 KLM42W BLL → AMS Jul 15, 04:10 UTCJul 15, 05:00 UTC50m
2026-07-14 KLM1301 - Jul 14, 20:55 UTCJul 14, 21:40 UTC45m
2026-07-14 KLM1412 - Jul 14, 19:00 UTCJul 14, 19:45 UTC45m
2026-07-14 KLM1411 - Jul 14, 16:15 UTCJul 14, 17:05 UTC50m
2026-07-14 KLM80B - Jul 14, 11:55 UTCJul 14, 14:15 UTC2h 20m
2026-07-14 KLM77U - Jul 14, 07:55 UTCJul 14, 10:35 UTC2h 40m
2026-07-14 KLM934 GLA → AMS Jul 14, 05:10 UTCJul 14, 06:20 UTC1h 10m
2026-07-13 KLM945 - Jul 13, 21:05 UTCJul 13, 22:05 UTC1h 0m
2026-07-13 KLM60M WAW → AMS Jul 13, 17:55 UTCJul 13, 19:35 UTC1h 40m
2026-07-13 KLM95T - Jul 13, 15:30 UTCJul 13, 17:00 UTC1h 30m
2026-07-13 KLM58N VIE → AMS Jul 13, 12:40 UTCJul 13, 14:10 UTC1h 30m
2026-07-13 KLM77F - Jul 13, 10:20 UTCJul 13, 11:40 UTC1h 20m
2026-07-13 KLM12B - Jul 13, 08:20 UTCJul 13, 09:05 UTC45m
2026-07-13 KLM1403 - Jul 13, 05:55 UTCJul 13, 06:55 UTC1h 0m
2026-07-12 KLM14D LIN → AMS Jul 12, 15:50 UTCJul 12, 17:10 UTC1h 20m
2026-07-12 KLM99D - Jul 12, 13:30 UTCJul 12, 14:45 UTC1h 15m
2026-07-12 KLM1920 ZRH → AMS Jul 12, 10:45 UTCJul 12, 11:45 UTC1h 0m
2026-07-12 KLM29A AMS → ZRH Jul 12, 08:05 UTCJul 12, 09:05 UTC1h 0m
2026-07-12 KLM88C DUB → AMS Jul 12, 05:20 UTCJul 12, 06:25 UTC1h 5m
2026-07-11 KLM1145 - Jul 11, 20:30 UTCJul 11, 21:45 UTC1h 15m
2026-07-11 KLM1782 - Jul 11, 17:20 UTCJul 11, 18:20 UTC1h 0m
2026-07-11 KLM67B AMS → BER Jul 11, 15:30 UTCJul 11, 16:25 UTC55m
2026-07-11 KLM34A - Jul 11, 12:40 UTCJul 11, 14:00 UTC1h 20m
2026-07-11 KLM23F - Jul 11, 10:20 UTCJul 11, 11:35 UTC1h 15m
2026-07-11 KLM12B - Jul 11, 08:01 UTCJul 11, 08:45 UTC45m
2026-07-11 KLM1403 AMS → CDG Jul 11, 05:25 UTCJul 11, 06:25 UTC1h 0m
2026-07-10 KLM1038 MAN → AMS Jul 10, 20:05 UTCJul 10, 20:50 UTC45m
2026-07-10 KLM91N - Jul 10, 18:05 UTCJul 10, 19:05 UTC1h 0m
2026-07-10 KLM14D LIN → AMS Jul 10, 15:10 UTCJul 10, 16:30 UTC1h 20m
2026-07-10 KLM99D - Jul 10, 12:40 UTCJul 10, 13:55 UTC1h 15m
2026-07-10 KLM68J - Jul 10, 10:10 UTCJul 10, 11:20 UTC1h 10m
2026-07-10 KLM63J - Jul 10, 08:05 UTCJul 10, 09:10 UTC1h 5m
2026-07-10 KLM30N - Jul 10, 05:30 UTCJul 10, 06:50 UTC1h 20m
2026-07-09 KLM39G - Jul 9, 19:30 UTCJul 9, 20:45 UTC1h 15m
2026-07-09 KLM82J BHX → AMS Jul 9, 15:50 UTCJul 9, 17:55 UTC2h 5m
2026-07-09 KLM69H - Jul 9, 12:50 UTCJul 9, 14:55 UTC2h 5m
2026-07-09 KLM64A - Jul 9, 09:35 UTCJul 9, 11:25 UTC1h 50m
2026-07-09 KLM93R - Jul 9, 06:55 UTCJul 9, 08:30 UTC1h 35m
2026-07-09 KLM24M BGO → AMS Jul 9, 04:10 UTCJul 9, 05:35 UTC1h 25m
2026-07-08 KLM95U - Jul 8, 19:35 UTCJul 8, 20:55 UTC1h 20m
2026-07-08 KLM56E - Jul 8, 16:05 UTCJul 8, 17:55 UTC1h 50m
2026-07-08 KLM51W - Jul 8, 13:15 UTCJul 8, 14:40 UTC1h 25m
2026-07-08 KLM54H - Jul 8, 10:00 UTCJul 8, 11:35 UTC1h 35m
2026-07-08 KLM93W - Jul 8, 07:25 UTCJul 8, 08:40 UTC1h 15m
2026-07-08 KLM64F WAW → AMS Jul 8, 04:25 UTCJul 8, 06:05 UTC1h 40m
2026-07-07 KLM73D - Jul 7, 18:45 UTCJul 7, 20:15 UTC1h 30m
2026-07-07 KLM38T ZRH → AMS Jul 7, 16:05 UTCJul 7, 17:20 UTC1h 15m
2026-07-07 KLM99V - Jul 7, 13:55 UTCJul 7, 14:50 UTC55m
2026-07-07 KLM86F OSL → AMS Jul 7, 10:30 UTCJul 7, 12:00 UTC1h 30m
2026-07-07 KLM65M AMS → OSL Jul 7, 08:00 UTCJul 7, 09:25 UTC1h 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-BCK page for operator, model, and routing details .

Mode-S 485A34 frequently asked

What is Mode-S code 485A34?
485A34 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BCK.
Where is Mode-S 485A34 registered?
Mode-S code 485A34 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 485A34 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 485A34, octal 22055064, decimal 4,741,684.
What flights does 485A34 operate?
Mode-S 485A34 has broadcast 20 distinct callsigns, including KLM67E, KLM92Y, KLM99D, KLM1961, KLM1958.