Apparatus

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sensors Mode-S transponder

485A33

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BCH · BOEING 737-800

Hex
485A33
Octal
22055063
Decimal
4,741,683
Country
NL
Tail
PH-BCH
Type
B738
No current signal · last broadcast Jul 26, 20:30 UTC
Flights observed
581
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 20:30 UTC

Last known position

Most recent position reported by Mode-S 485A33.

Country allocation

The ICAO 24-bit address 485A33 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
KLM1960 - 13 2026-07-18
KLM1959 - 13 2026-07-18
KLM1961 - 12 2026-07-18
KLM1958 KLM Royal Dutch Airlines 12 2026-07-19
KLM95U KLM Royal Dutch Airlines 8 2026-07-21
KLM94K KLM Royal Dutch Airlines 8 2026-07-26
KLM92Y KLM Royal Dutch Airlines 8 2026-07-22
KLM85P KLM Royal Dutch Airlines 8 2026-07-25
KLM67E - 7 2026-07-15
KLM24M KLM Royal Dutch Airlines 7 2026-07-22
KLM95P - 6 2026-06-22
KLM92W KLM Royal Dutch Airlines 6 2026-07-21
KLM80Y - 6 2026-06-30
KLM67Q - 6 2026-06-22
KLM62R - 6 2026-06-29
KLM62D - 6 2026-06-22
KLM58M KLM Royal Dutch Airlines 6 2026-07-24
KLM44A - 6 2026-06-29
KLM31K - 6 2026-07-21
KLM28W KLM Royal Dutch Airlines 6 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM10Y NCE → AMS Jul 26, 18:35 UTCJul 26, 20:25 UTC1h 50m
2026-07-26 KLM1479 AMS → GLA Jul 26, 15:20 UTCJul 26, 16:50 UTC1h 30m
2026-07-26 KLM1670 BCN → AMS Jul 26, 11:20 UTCJul 26, 14:00 UTC2h 40m
2026-07-26 KLM1669 AMS → BCN Jul 26, 07:35 UTCJul 26, 10:00 UTC2h 25m
2026-07-26 KLM94K BUD → AMS Jul 26, 04:00 UTCJul 26, 05:50 UTC1h 50m
2026-07-25 KLM85P AMS → BUD Jul 25, 20:00 UTCJul 25, 21:30 UTC1h 30m
2026-07-25 KLM1316 - Jul 25, 15:30 UTCJul 25, 17:05 UTC1h 35m
2026-07-25 KLM49N AMS → WAW Jul 25, 12:55 UTCJul 25, 14:20 UTC1h 25m
2026-07-25 KLM54H NCE → AMS Jul 25, 10:05 UTCJul 25, 11:30 UTC1h 25m
2026-07-25 KLM93W AMS → VCE Jul 25, 07:35 UTCJul 25, 08:55 UTC1h 20m
2026-07-25 KLM68N NCE → AMS Jul 25, 04:35 UTCJul 25, 06:10 UTC1h 35m
2026-07-24 KLM99H AMS → NCE Jul 24, 18:40 UTCJul 24, 20:20 UTC1h 40m
2026-07-24 KLM58M BIO → AMS Jul 24, 15:40 UTCJul 24, 17:05 UTC1h 25m
2026-07-24 KLM91A AMS → BIO Jul 24, 12:50 UTCJul 24, 14:30 UTC1h 40m
2026-07-24 KLM64A BUD → AMS Jul 24, 09:40 UTCJul 24, 11:25 UTC1h 45m
2026-07-24 KLM93R AMS → LIN Jul 24, 06:55 UTCJul 24, 08:35 UTC1h 40m
2026-07-24 KLM1628 MXP → AMS Jul 24, 04:15 UTCJul 24, 05:50 UTC1h 35m
2026-07-23 KLM43F AMS → NCE Jul 23, 18:50 UTCJul 23, 20:05 UTC1h 15m
2026-07-23 KLM98A OTP → AMS Jul 23, 14:35 UTCJul 23, 17:25 UTC2h 50m
2026-07-23 KLM51E AMS → BRS Jul 23, 11:15 UTCJul 23, 13:25 UTC2h 10m
2026-07-23 KLM42N GLA → AMS Jul 23, 08:25 UTCJul 23, 09:30 UTC1h 5m
2026-07-23 KLM61B AMS → GLA Jul 23, 06:20 UTCJul 23, 07:25 UTC1h 5m
2026-07-22 KLM60M - Jul 22, 17:45 UTCJul 22, 19:25 UTC1h 40m
2026-07-22 KLM95T - Jul 22, 15:25 UTCJul 22, 16:55 UTC1h 30m
2026-07-22 KLM92Y STR → AMS Jul 22, 11:10 UTCJul 22, 14:15 UTC3h 5m
2026-07-22 KLM24M BGO → AMS Jul 22, 04:05 UTCJul 22, 05:20 UTC1h 15m
2026-07-21 KLM95U AMS → BGO Jul 21, 19:45 UTCJul 21, 21:05 UTC1h 20m
2026-07-21 KLM60H OPO → AMS Jul 21, 16:00 UTCJul 21, 18:10 UTC2h 10m
2026-07-21 KLM61M - Jul 21, 12:40 UTCJul 21, 14:50 UTC2h 10m
2026-07-21 KLM92W CPH → AMS Jul 21, 09:55 UTCJul 21, 10:55 UTC1h 0m
2026-07-21 KLM31K - Jul 21, 07:40 UTCJul 21, 08:40 UTC1h 0m
2026-07-21 KLM76Q KRS → AMS Jul 21, 04:50 UTCJul 21, 06:10 UTC1h 20m
2026-07-20 KLM1621 - Jul 20, 19:50 UTCJul 20, 21:00 UTC1h 10m
2026-07-20 KLM10X NCE → AMS Jul 20, 15:30 UTCJul 20, 17:00 UTC1h 30m
2026-07-20 KLM41F AMS → NCE Jul 20, 12:30 UTCJul 20, 14:15 UTC1h 45m
2026-07-20 KLM46C LIN → AMS Jul 20, 09:15 UTCJul 20, 10:45 UTC1h 30m
2026-07-20 KLM89Q - Jul 20, 06:40 UTCJul 20, 07:55 UTC1h 15m
2026-07-20 KLM70B PRG → AMS Jul 20, 04:05 UTCJul 20, 05:15 UTC1h 10m
2026-07-19 KLM1361 AMS → PRG Jul 19, 19:40 UTCJul 19, 20:45 UTC1h 5m
2026-07-19 KLM82J HEL → AMS Jul 19, 15:55 UTCJul 19, 18:00 UTC2h 5m
2026-07-19 KLM69H - Jul 19, 12:50 UTCJul 19, 14:45 UTC1h 55m
2026-07-19 KLM92W CPH → AMS Jul 19, 10:00 UTCJul 19, 11:00 UTC1h 0m
2026-07-19 KLM31K - Jul 19, 07:45 UTCJul 19, 08:40 UTC55m
2026-07-19 KLM1958 ZRH → AMS Jul 19, 03:15 UTCJul 19, 06:10 UTC2h 55m
2026-07-18 KLM1961 - Jul 18, 19:20 UTCJul 18, 22:10 UTC2h 50m
2026-07-18 KLM1960 - Jul 18, 14:45 UTCJul 18, 17:45 UTC3h 0m
2026-07-18 KLM1959 - Jul 18, 10:15 UTCJul 18, 13:00 UTC2h 45m
2026-07-18 KLM12B - Jul 18, 08:05 UTCJul 18, 08:50 UTC45m
2026-07-18 KLM1403 AMS → CDG Jul 18, 05:40 UTCJul 18, 06:35 UTC55m
2026-07-17 KLM1226 ARN → AMS Jul 17, 19:09 UTCJul 17, 20:50 UTC1h 40m

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

Mode-S 485A33 frequently asked

What is Mode-S code 485A33?
485A33 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BCH.
Where is Mode-S 485A33 registered?
Mode-S code 485A33 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 485A33 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 485A33, octal 22055063, decimal 4,741,683.
What flights does 485A33 operate?
Mode-S 485A33 has broadcast 20 distinct callsigns, including KLM1960, KLM1959, KLM1961, KLM1958, KLM95U.