sensors Mode-S transponder

485A35

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BCL · BOEING 737-800

Hex
485A35
Octal
22055065
Decimal
4,741,685
Country
NL
Tail
PH-BCL
Type
B738
Broadcasting now · callsign KLM1958 · 38,000 ft
Flights observed
15
Distinct callsigns
11
Country
NL
Last broadcast
16h ago

Current position

485A35 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 485A35 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 11 distinct

Callsign Airline Flights Last seen
KLM93B - 2 2026-04-13
KLM39G - 2 2026-04-13
KLM29A - 2 2026-04-14
KLM26E KLM Royal Dutch Airlines 2 2026-04-13
KLM85B - 1 2026-04-13
KLM34A - 1 2026-04-13
KLM30N KLM Royal Dutch Airlines 1 2026-04-14
KLM28W KLM Royal Dutch Airlines 1 2026-04-12
KLM23F - 1 2026-04-13
KLM1920 - 1 2026-04-14
KLM1048 - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 KLM1920 - Apr 14, 10:25 UTCApr 14, 11:05 UTC40m
2026-04-14 KLM29A - Apr 14, 09:10 UTCApr 14, 09:15 UTC5m
2026-04-14 KLM29A - Apr 14, 08:05 UTCApr 14, 09:05 UTC1h 0m
2026-04-14 KLM30N OSL → AMS Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 KLM39G - Apr 13, 19:50 UTCApr 13, 20:50 UTC1h 0m
2026-04-13 KLM39G - Apr 13, 19:35 UTCApr 13, 20:10 UTC35m
2026-04-13 KLM1048 BHX → AMS Apr 13, 17:25 UTCApr 13, 18:10 UTC45m
2026-04-13 KLM93B - Apr 13, 15:50 UTCApr 13, 16:20 UTC30m
2026-04-13 KLM93B - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 KLM34A - Apr 13, 12:30 UTCApr 13, 14:05 UTC1h 35m
2026-04-13 KLM23F - Apr 13, 10:00 UTCApr 13, 11:15 UTC1h 15m
2026-04-13 KLM26E CDG → AMS Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 KLM26E CDG → AMS Apr 13, 07:30 UTCApr 13, 08:15 UTC45m
2026-04-13 KLM85B AMS → CDG Apr 13, 05:30 UTCApr 13, 06:20 UTC50m
2026-04-12 KLM28W NCE → AMS Apr 12, 17:15 UTCApr 12, 18:30 UTC1h 15m

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-BCL page for operator, model, and routing details .

Mode-S 485A35 frequently asked

What is Mode-S code 485A35?
485A35 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BCL.
Where is Mode-S 485A35 registered?
Mode-S code 485A35 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 485A35 broadcasting right now?
Yes. Mode-S 485A35 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 485A35, octal 22055065, decimal 4,741,685.
What flights does 485A35 operate?
Mode-S 485A35 has broadcast 11 distinct callsigns, including KLM93B, KLM39G, KLM29A, KLM26E, KLM85B.