Apparatus

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sensors Mode-S transponder

485123

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-HSM · BOEING 737-800

Hex
485123
Octal
22050443
Decimal
4,739,363
Country
NL
Tail
PH-HSM
Type
B738
No current signal · last broadcast 49m ago
Flights observed
405
Distinct callsigns
20
Country
NL
Last broadcast
49m ago

Last known position

Most recent position reported by Mode-S 485123.

Country allocation

The ICAO 24-bit address 485123 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
TRA357A - 16 2026-06-27
TRA82P - 10 2026-06-27
TRA5C Transavia Holland 9 2026-06-09
TRA6215 - 7 2026-06-26
TRA73V - 6 2026-06-23
TRA44G Transavia Holland 6 2026-06-20
TRA216Y - 6 2026-06-26
TRA17H Transavia Holland 6 2026-05-31
TRA14E - 6 2026-06-24
TRA7E - 5 2026-06-23
TRA78T - 5 2026-06-23
TRA6513 Transavia Holland 5 2026-06-24
TRA976Y - 4 2026-07-05
TRA94R - 4 2026-06-18
TRA86Q - 4 2026-07-02
TRA819R Transavia Holland 4 2026-06-13
TRA40L Transavia Holland 4 2026-06-09
TRA33P - 4 2026-06-09
TRA33E Transavia Holland 4 2026-06-09
TRA25E - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TRA58G OSL → EIN Jul 14, 18:35 UTCJul 14, 20:05 UTC1h 30m
2026-07-14 TRA861G - Jul 14, 16:00 UTCJul 14, 17:35 UTC1h 35m
2026-07-14 TRA104X - Jul 14, 13:00 UTCJul 14, 14:55 UTC1h 55m
2026-07-14 TRA80H - Jul 14, 09:45 UTCJul 14, 12:00 UTC2h 15m
2026-07-14 TRA29B - Jul 14, 06:35 UTCJul 14, 08:15 UTC1h 40m
2026-07-14 TRA37X - Jul 14, 03:55 UTCJul 14, 05:35 UTC1h 40m
2026-07-13 TRA24B - Jul 13, 19:30 UTCJul 13, 21:25 UTC1h 55m
2026-07-13 TRA18N AMS → AHO Jul 13, 16:40 UTCJul 13, 18:35 UTC1h 55m
2026-07-13 TRA51K MJT → AMS Jul 13, 10:00 UTCJul 13, 13:10 UTC3h 10m
2026-07-13 TRA51K - Jul 13, 08:30 UTCJul 13, 09:00 UTC30m
2026-07-13 TRA51K - Jul 13, 04:45 UTCJul 13, 07:10 UTC2h 25m
2026-07-12 TRA1Q - Jul 12, 21:05 UTCJul 12, 23:35 UTC2h 30m
2026-07-12 TRA2C - Jul 12, 17:45 UTCJul 12, 19:45 UTC2h 0m
2026-07-12 TRA5920 - Jul 12, 09:55 UTCJul 12, 13:15 UTC3h 20m
2026-07-12 TRA3U - Jul 12, 05:25 UTCJul 12, 08:25 UTC3h 0m
2026-07-11 TRA3J KGS → AMS Jul 11, 20:50 UTCJul 12, 00:05 UTC3h 15m
2026-07-11 TRA7Y - Jul 11, 16:40 UTCJul 11, 19:40 UTC3h 0m
2026-07-11 TRA2M KGS → EIN Jul 11, 11:55 UTCJul 11, 15:10 UTC3h 15m
2026-07-11 TRA5401 AMS → KGS Jul 11, 07:45 UTCJul 11, 10:50 UTC3h 5m
2026-07-10 TRA4B - Jul 10, 23:00 UTCJul 11, 01:45 UTC2h 45m
2026-07-10 TRA58H - Jul 10, 18:35 UTCJul 10, 21:40 UTC3h 5m
2026-07-10 TRA5162 - Jul 10, 12:45 UTCJul 10, 17:00 UTC4h 15m
2026-07-10 TRA5161 - Jul 10, 06:45 UTCJul 10, 10:40 UTC3h 55m
2026-07-09 TRA2W - Jul 9, 20:30 UTCJul 9, 22:55 UTC2h 25m
2026-07-09 TRA6423 - Jul 9, 18:00 UTCJul 9, 18:10 UTC10m
2026-07-09 TRA6423 - Jul 9, 14:10 UTCJul 9, 16:40 UTC2h 30m
2026-07-09 TRA95T - Jul 9, 07:40 UTCJul 9, 11:05 UTC3h 25m
2026-07-09 TRA893N AMS → JTR Jul 9, 03:30 UTCJul 9, 06:20 UTC2h 50m
2026-07-07 TRA45Y BCN → AMS Jul 7, 21:35 UTCJul 7, 23:20 UTC1h 45m
2026-07-07 TRA9K - Jul 7, 18:05 UTCJul 7, 19:45 UTC1h 40m
2026-07-07 TRA6792 BCN → EIN Jul 7, 15:05 UTCJul 7, 16:50 UTC1h 45m
2026-07-07 TRA3T - Jul 7, 12:10 UTCJul 7, 13:55 UTC1h 45m
2026-07-07 TRA89E SKG → AMS Jul 7, 07:20 UTCJul 7, 10:05 UTC2h 45m
2026-07-07 TRA1E AMS → SKG Jul 7, 03:50 UTCJul 7, 06:10 UTC2h 20m
2026-07-06 TRA16U ALC → AMS Jul 6, 21:25 UTCJul 6, 23:45 UTC2h 20m
2026-07-06 TRA99W AMS → ALC Jul 6, 18:00 UTCJul 6, 20:10 UTC2h 10m
2026-07-06 TRA73F - Jul 6, 14:30 UTCJul 6, 16:40 UTC2h 10m
2026-07-06 TRA47M RTM → VLC Jul 6, 11:25 UTCJul 6, 13:20 UTC1h 55m
2026-07-06 TRA5W - Jul 6, 08:15 UTCJul 6, 10:25 UTC2h 10m
2026-07-06 TRA6F - Jul 6, 05:10 UTCJul 6, 07:00 UTC1h 50m
2026-07-05 TRA67E BCN → EIN Jul 5, 19:05 UTCJul 5, 20:55 UTC1h 50m
2026-07-05 TRA44E - Jul 5, 16:10 UTCJul 5, 17:50 UTC1h 40m
2026-07-05 TRA976Y - Jul 5, 13:10 UTCJul 5, 15:15 UTC2h 5m
2026-07-05 TRA193Z - Jul 5, 10:00 UTCJul 5, 11:55 UTC1h 55m
2026-07-05 TRA98Q IBZ → RTM Jul 5, 07:00 UTCJul 5, 09:05 UTC2h 5m
2026-07-05 TRA341M - Jul 5, 03:45 UTCJul 5, 05:55 UTC2h 10m
2026-07-04 TRA48M - Jul 4, 21:15 UTCJul 4, 23:00 UTC1h 45m
2026-07-04 TRA5421 AMS → PSA Jul 4, 18:35 UTCJul 4, 20:00 UTC1h 25m
2026-07-04 TRA28U - Jul 4, 15:40 UTCJul 4, 17:00 UTC1h 20m
2026-07-04 TRA8V - Jul 4, 13:35 UTCJul 4, 14:40 UTC1h 5m

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

Mode-S 485123 frequently asked

What is Mode-S code 485123?
485123 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-HSM.
Where is Mode-S 485123 registered?
Mode-S code 485123 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 485123 broadcasting right now?
No active broadcast right now. Last signal was 49m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 485123, octal 22050443, decimal 4,739,363.
What flights does 485123 operate?
Mode-S 485123 has broadcast 20 distinct callsigns, including TRA357A, TRA82P, TRA5C, TRA6215, TRA73V.