Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 KLM39K · 27,850 ft
Flights observed
298
Distinct callsigns
20
Country
NL
Last broadcast
38m ago

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 KLM Royal Dutch Airlines 8 2026-05-20
KLM92Y KLM Royal Dutch Airlines 7 2026-05-20
KLM959 KLM Royal Dutch Airlines 6 2026-05-18
KLM88U KLM Royal Dutch Airlines 6 2026-05-18
KLM62R KLM Royal Dutch Airlines 5 2026-05-19
KLM45Q KLM Royal Dutch Airlines 5 2026-04-21
KLM1961 KLM Royal Dutch Airlines 5 2026-05-22
KLM1958 KLM Royal Dutch Airlines 5 2026-05-23
KLM1375 KLM Royal Dutch Airlines 5 2026-05-19
KLM99L KLM Royal Dutch Airlines 4 2026-05-25
KLM92B KLM Royal Dutch Airlines 4 2026-04-22
KLM80Y KLM Royal Dutch Airlines 4 2026-05-14
KLM67Q KLM Royal Dutch Airlines 4 2026-05-16
KLM60H KLM Royal Dutch Airlines 4 2026-05-25
KLM28W KLM Royal Dutch Airlines 4 2026-05-16
KLM25J KLM Royal Dutch Airlines 4 2026-05-19
KLM1266 KLM Royal Dutch Airlines 4 2026-05-20
KLM99B KLM Royal Dutch Airlines 3 2026-05-29
KLM95P KLM Royal Dutch Airlines 3 2026-05-13
KLM941 KLM Royal Dutch Airlines 3 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KLM39K AMS → LIN May 30, 08:45 UTCMay 30, 09:00 UTC15m
2026-05-30 KLM24B FLR → AMS May 30, 05:30 UTCMay 30, 06:55 UTC1h 25m
2026-05-29 KLM57C AMS → ZRH May 29, 20:00 UTCMay 29, 21:20 UTC1h 20m
2026-05-29 KLM38T ZRH → AMS May 29, 17:25 UTCMay 29, 18:30 UTC1h 5m
2026-05-29 KLM99V AMS → ZRH May 29, 15:20 UTCMay 29, 16:15 UTC55m
2026-05-29 KLM62C MRS → AMS May 29, 11:15 UTCMay 29, 12:50 UTC1h 35m
2026-05-29 KLM99B AMS → OPO May 29, 08:35 UTCMay 29, 10:00 UTC1h 25m
2026-05-29 KLM68N NCE → AMS May 29, 05:25 UTCMay 29, 07:00 UTC1h 35m
2026-05-28 KLM99H AMS → NCE May 28, 18:40 UTCMay 28, 20:15 UTC1h 35m
2026-05-28 KLM14D LIN → AMS May 28, 15:10 UTCMay 28, 16:30 UTC1h 20m
2026-05-28 KLM99D AMS → LIN May 28, 12:40 UTCMay 28, 14:00 UTC1h 20m
2026-05-28 KLM1920 GDN → AMS May 28, 10:20 UTCMay 28, 11:25 UTC1h 5m
2026-05-28 KLM29A AMS → ZRH May 28, 08:00 UTCMay 28, 09:10 UTC1h 10m
2026-05-28 KLM50A AMS → BCN May 28, 05:20 UTCMay 28, 06:10 UTC50m
2026-05-27 KLM47K AMS → MAN May 27, 20:05 UTCMay 27, 21:00 UTC55m
2026-05-27 KLM1960 ZRH → AMS May 27, 15:10 UTCMay 27, 18:00 UTC2h 50m
2026-05-27 KLM1959 AMS → ZRH May 27, 10:55 UTCMay 27, 13:40 UTC2h 45m
2026-05-27 KLM1042 AGP → AMS May 27, 08:30 UTCMay 27, 09:15 UTC45m
2026-05-27 KLM27J AMS → BHX May 27, 06:40 UTCMay 27, 07:30 UTC51m
2026-05-26 KLM24F TLS → AMS May 26, 15:20 UTCMay 26, 16:45 UTC1h 25m
2026-05-26 KLM47U AMS → TLS May 26, 12:50 UTCMay 26, 14:20 UTC1h 30m
2026-05-26 KLM92W CPH → AMS May 26, 10:10 UTCMay 26, 11:09 UTC1h 0m
2026-05-26 KLM31K AMS → HAJ May 26, 08:10 UTCMay 26, 09:09 UTC1h 0m
2026-05-26 KLM76Q KRS → AMS May 26, 04:45 UTCMay 26, 06:10 UTC1h 25m
2026-05-25 KLM1621 AMS → LIN May 25, 19:30 UTCMay 25, 20:50 UTC1h 20m
2026-05-25 KLM60H GLA → AMS May 25, 16:10 UTCMay 25, 18:15 UTC2h 5m
2026-05-25 KLM99L AMS → OPO May 25, 12:25 UTCMay 25, 14:45 UTC2h 20m
2026-05-25 KLM1294 BLL → AMS May 25, 10:05 UTCMay 25, 10:55 UTC50m
2026-05-25 KLM59N AMS → BLL May 25, 08:10 UTCMay 25, 09:00 UTC50m
2026-05-25 KLM30N OSL → AMS May 25, 04:40 UTCMay 25, 06:10 UTC1h 30m
2026-05-24 KLM39G AMS → OSL May 24, 20:05 UTCMay 24, 21:35 UTC1h 30m
2026-05-24 KLM42Y MAD → AMS May 24, 16:45 UTCMay 24, 18:45 UTC2h 0m
2026-05-24 KLM31H AMS → MAD May 24, 12:40 UTCMay 24, 14:40 UTC2h 0m
2026-05-24 KLM938 GLA → AMS May 24, 09:40 UTCMay 24, 10:50 UTC1h 10m
2026-05-24 KLM43C AMS → GLA May 24, 07:35 UTCMay 24, 08:40 UTC1h 5m
2026-05-24 KLM24M BGO → AMS May 24, 04:05 UTCMay 24, 05:25 UTC1h 20m
2026-05-23 KLM95U AMS → BGO May 23, 19:25 UTCMay 23, 20:45 UTC1h 20m
2026-05-23 KLM72C MAN → AMS May 23, 16:00 UTCMay 23, 17:25 UTC1h 25m
2026-05-23 KLM23M AMS → MRS May 23, 13:30 UTCMay 23, 14:50 UTC1h 20m
2026-05-23 KLM1138 DUB → AMS May 23, 10:40 UTCMay 23, 11:45 UTC1h 5m
2026-05-23 KLM1137 AMS → DUB May 23, 08:05 UTCMay 23, 09:25 UTC1h 20m
2026-05-23 KLM1958 ZRH → AMS May 23, 03:25 UTCMay 23, 06:15 UTC2h 50m
2026-05-22 KLM1961 AMS → ZRH May 22, 19:30 UTCMay 22, 22:20 UTC2h 50m
2026-05-22 KLM1780 HAM → AMS May 22, 16:05 UTCMay 22, 17:05 UTC1h 0m
2026-05-22 KLM1779 AMS → HAM May 22, 13:50 UTCMay 22, 14:50 UTC1h 0m
2026-05-22 KLM62C MRS → AMS May 22, 10:45 UTCMay 22, 12:10 UTC1h 25m
2026-05-22 KLM99B AMS → OPO May 22, 08:00 UTCMay 22, 09:25 UTC1h 25m
2026-05-22 KLM76Q KRS → AMS May 22, 04:50 UTCMay 22, 06:10 UTC1h 20m
2026-05-21 KLM1621 AMS → LIN May 21, 19:50 UTCMay 21, 21:05 UTC1h 15m
2026-05-21 KLM58M BIO → AMS May 21, 16:45 UTCMay 21, 18:15 UTC1h 30m

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, KLM92Y, KLM959, KLM88U, KLM62R.