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 KLM66G · 29,450 ft
Flights observed
15
Distinct callsigns
10
Country
NL
Last broadcast
19h 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 10 distinct

Callsign Airline Flights Last seen
KLM80Y - 3 2026-04-13
KLM67E - 3 2026-04-14
KLM45Q - 2 2026-04-13
KLM941 KLM Royal Dutch Airlines 1 2026-04-13
KLM92B KLM Royal Dutch Airlines 1 2026-04-14
KLM80R - 1 2026-04-13
KLM68B - 1 2026-04-13
KLM39K KLM Royal Dutch Airlines 1 2026-04-13
KLM1960 - 1 2026-04-12
KLM1377 - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 KLM67E - Apr 14, 09:10 UTCApr 14, 09:45 UTC35m
2026-04-14 KLM67E - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 KLM67E - Apr 14, 06:50 UTCApr 14, 07:10 UTC20m
2026-04-14 KLM92B GOT → AMS Apr 14, 05:15 UTCApr 14, 05:20 UTC5m
2026-04-13 KLM45Q - Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 KLM45Q - Apr 13, 19:40 UTCApr 13, 20:10 UTC30m
2026-04-13 KLM68B - Apr 13, 16:15 UTCApr 13, 17:20 UTC1h 5m
2026-04-13 KLM941 AMS → DUB Apr 13, 14:05 UTCApr 13, 15:15 UTC1h 10m
2026-04-13 KLM80Y - Apr 13, 12:20 UTCApr 13, 12:30 UTC10m
2026-04-13 KLM80Y - Apr 13, 11:55 UTCApr 13, 12:30 UTC35m
2026-04-13 KLM80Y - Apr 13, 11:15 UTCApr 13, 12:15 UTC1h 0m
2026-04-13 KLM39K AMS → LIN Apr 13, 08:45 UTCApr 13, 10:05 UTC1h 20m
2026-04-13 KLM80R - Apr 13, 04:25 UTCApr 13, 06:55 UTC2h 30m
2026-04-12 KLM1377 - Apr 12, 19:45 UTCApr 12, 20:15 UTC30m
2026-04-12 KLM1960 - Apr 12, 17:15 UTCApr 12, 18:10 UTC55m

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 10 distinct callsigns, including KLM80Y, KLM67E, KLM45Q, KLM941, KLM92B.