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
Broadcasting now · callsign KLM26E · 16,525 ft
Flights observed
637
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 20:40 UTC

Current position

485A34 is currently broadcasting. Map zoomed to live position.

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
KLM1961 KLM Royal Dutch Airlines 9 2026-07-22
KLM1958 KLM Royal Dutch Airlines 9 2026-07-23
KLM92Y - 8 2026-06-17
KLM25J KLM Royal Dutch Airlines 8 2026-07-24
KLM1266 KLM Royal Dutch Airlines 8 2026-07-25
KLM99D - 7 2026-07-12
KLM60H - 7 2026-07-24
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
KLM56W - 6 2026-07-16
KLM50A KLM Royal Dutch Airlines 6 2026-07-24
KLM47K KLM Royal Dutch Airlines 6 2026-07-23
KLM45Q - 6 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM69P AMS → MRS Jul 26, 19:15 UTCJul 26, 20:40 UTC1h 25m
2026-07-26 KLM59W AMS → MAN Jul 26, 17:10 UTCJul 26, 17:55 UTC45m
2026-07-26 KLM83A AMS → HAM Jul 26, 15:40 UTCJul 26, 16:15 UTC35m
2026-07-26 KLM98X DBV → AMS Jul 26, 12:00 UTCJul 26, 14:15 UTC2h 15m
2026-07-26 KLM1977 AMS → BUD Jul 26, 08:35 UTCJul 26, 10:30 UTC1h 55m
2026-07-26 KLM1970 SPU → AMS Jul 26, 04:45 UTCJul 26, 06:45 UTC2h 1m
2026-07-25 KLM91R BIO → AMS Jul 25, 19:25 UTCJul 25, 20:50 UTC1h 25m
2026-07-25 KLM38T ZRH → AMS Jul 25, 15:50 UTCJul 25, 16:55 UTC1h 5m
2026-07-25 KLM99V AMS → ZRH Jul 25, 13:40 UTCJul 25, 14:35 UTC55m
2026-07-25 KLM1678 LIS → AMS Jul 25, 09:45 UTCJul 25, 11:55 UTC2h 10m
2026-07-25 KLM23L AMS → NAP Jul 25, 06:30 UTCJul 25, 08:35 UTC2h 5m
2026-07-25 KLM1266 MRS → AMS Jul 25, 04:10 UTCJul 25, 05:10 UTC1h 0m
2026-07-24 KLM25J AMS → CPH Jul 24, 19:35 UTCJul 24, 20:35 UTC1h 0m
2026-07-24 KLM60H OPO → AMS Jul 24, 15:45 UTCJul 24, 18:00 UTC2h 15m
2026-07-24 KLM61M - Jul 24, 12:15 UTCJul 24, 14:30 UTC2h 15m
2026-07-24 KLM92W CPH → AMS Jul 24, 09:50 UTCJul 24, 10:50 UTC1h 0m
2026-07-24 KLM31K AMS → HAJ Jul 24, 07:35 UTCJul 24, 08:35 UTC1h 0m
2026-07-24 KLM50A AMS → BCN Jul 24, 05:15 UTCJul 24, 06:10 UTC55m
2026-07-23 KLM47K AMS → MAN Jul 23, 20:00 UTCJul 23, 20:45 UTC45m
2026-07-23 KLM1782 - Jul 23, 17:50 UTCJul 23, 18:45 UTC55m
2026-07-23 KLM67B AMS → BER Jul 23, 15:40 UTCJul 23, 16:40 UTC1h 0m
2026-07-23 KLM80B AGP → AMS Jul 23, 11:50 UTCJul 23, 14:20 UTC2h 30m
2026-07-23 KLM77U AMS → AGP Jul 23, 07:55 UTCJul 23, 10:25 UTC2h 30m
2026-07-23 KLM1958 ZRH → AMS Jul 23, 03:20 UTCJul 23, 06:20 UTC3h 0m
2026-07-22 KLM1961 AMS → ZRH Jul 22, 19:40 UTCJul 22, 22:15 UTC2h 35m
2026-07-22 KLM82J - Jul 22, 16:00 UTCJul 22, 18:05 UTC2h 5m
2026-07-22 KLM69H AMS → HEL Jul 22, 13:00 UTCJul 22, 15:00 UTC2h 0m
2026-07-22 KLM1232 GOT → AMS Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-22 KLM76Q KRS → AMS Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-21 KLM1621 - Jul 21, 19:45 UTCJul 21, 21:00 UTC1h 15m
2026-07-21 KLM918 ABZ → AMS Jul 21, 16:30 UTCJul 21, 17:40 UTC1h 10m
2026-07-21 KLM49R AMS → ABZ Jul 21, 14:25 UTCJul 21, 15:30 UTC1h 5m
2026-07-21 KLM1314 - Jul 21, 10:55 UTCJul 21, 12:30 UTC1h 35m
2026-07-21 KLM75C - Jul 21, 08:20 UTCJul 21, 09:55 UTC1h 35m
2026-07-20 KLM1958 ZRH → AMS Jul 20, 03:25 UTCJul 20, 06:25 UTC3h 0m
2026-07-19 KLM1961 - Jul 19, 20:05 UTCJul 19, 22:40 UTC2h 35m
2026-07-19 KLM60Q - Jul 19, 17:05 UTCJul 19, 18:10 UTC1h 5m
2026-07-19 KLM61D - Jul 19, 14:40 UTCJul 19, 15:45 UTC1h 5m
2026-07-19 KLM1972 - Jul 19, 11:20 UTCJul 19, 13:15 UTC1h 55m
2026-07-19 KLM39J - Jul 19, 08:15 UTCJul 19, 09:45 UTC1h 30m
2026-07-19 KLM64F - Jul 19, 04:50 UTCJul 19, 06:25 UTC1h 35m
2026-07-18 KLM73D AMS → WAW Jul 18, 18:55 UTCJul 18, 20:25 UTC1h 30m
2026-07-18 KLM1316 - Jul 18, 15:35 UTCJul 18, 17:10 UTC1h 35m
2026-07-18 KLM49N - Jul 18, 13:05 UTCJul 18, 14:35 UTC1h 30m
2026-07-18 KLM82K - Jul 18, 10:35 UTCJul 18, 11:40 UTC1h 5m
2026-07-18 KLM97L - Jul 18, 08:20 UTCJul 18, 09:30 UTC1h 10m
2026-07-18 KLM22C WRO → AMS Jul 18, 04:40 UTCJul 18, 06:10 UTC1h 30m
2026-07-17 KLM69P - Jul 17, 19:35 UTCJul 17, 21:15 UTC1h 40m
2026-07-17 KLM98A - Jul 17, 15:40 UTCJul 17, 18:10 UTC2h 30m
2026-07-17 KLM51E - Jul 17, 11:50 UTCJul 17, 14:10 UTC2h 20m

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?
Yes. Mode-S 485A34 is currently airborne.
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, KLM1961, KLM1958, KLM92Y, KLM25J.