Apparatus

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sensors Mode-S transponder

885B44

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-VZD · BOEING 737 MAX 8

Hex
885B44
Octal
42055504
Decimal
8,936,260
Country
TH
Tail
HS-VZD
Type
B38M
Broadcasting now · callsign TVJ566 · 29,500 ft
Flights observed
9
Distinct callsigns
6
Country
TH
Last broadcast
16h ago

Current position

885B44 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 885B44 falls within the block assigned to Thailand (TH) by ICAO Annex 10, Volume III. Every aircraft registered in Thailand 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 6 distinct

Callsign Airline Flights Last seen
TVJ823 - 2 2026-04-13
TVJ3732 - 2 2026-04-13
TVJ105 - 2 2026-04-13
TVJ3733 - 1 2026-04-13
TVJ335 - 1 2026-04-14
TVJ334 - 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 TVJ335 - Apr 14, 08:30 UTCApr 14, 09:00 UTC30m
2026-04-14 TVJ334 - Apr 14, 06:20 UTCApr 14, 06:35 UTC15m
2026-04-13 TVJ3733 - Apr 13, 15:55 UTCApr 13, 16:15 UTC20m
2026-04-13 TVJ3732 - Apr 13, 12:20 UTCApr 13, 12:30 UTC10m
2026-04-13 TVJ3732 - Apr 13, 10:10 UTCApr 13, 10:20 UTC10m
2026-04-13 TVJ105 - Apr 13, 08:30 UTCApr 13, 08:50 UTC20m
2026-04-13 TVJ105 - Apr 13, 07:50 UTCApr 13, 08:05 UTC15m
2026-04-13 TVJ823 - Apr 13, 06:00 UTCApr 13, 06:10 UTC10m
2026-04-13 TVJ823 - Apr 13, 00:20 UTCApr 13, 04:00 UTC3h 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 HS-VZD page for operator, model, and routing details .

Mode-S 885B44 frequently asked

What is Mode-S code 885B44?
885B44 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-VZD.
Where is Mode-S 885B44 registered?
Mode-S code 885B44 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 885B44 broadcasting right now?
Yes. Mode-S 885B44 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 885B44, octal 42055504, decimal 8,936,260.
What flights does 885B44 operate?
Mode-S 885B44 has broadcast 6 distinct callsigns, including TVJ823, TVJ3732, TVJ105, TVJ3733, TVJ335.