sensors Mode-S transponder

881050

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-DBP · BOEING 737-800

Hex
881050
Octal
42010120
Decimal
8,917,072
Country
TH
Tail
HS-DBP
Type
B738
No current signal · last broadcast 14h ago
Flights observed
11
Distinct callsigns
10
Country
TH
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 881050.

Country allocation

The ICAO 24-bit address 881050 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 10 distinct

Callsign Airline Flights Last seen
NOK173 - 2 2026-04-14
NOK550 - 1 2026-04-13
NOK539 - 1 2026-04-13
NOK529 - 1 2026-04-13
NOK528 - 1 2026-04-13
NOK525 - 1 2026-04-13
NOK524 - 1 2026-04-13
NOK307 - 1 2026-04-14
NOK306 Nok Air 1 2026-04-14
NOK172 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 NOK307 - Apr 14, 10:05 UTCApr 14, 10:15 UTC10m
2026-04-14 NOK306 DMK → UTH Apr 14, 07:50 UTCApr 14, 08:10 UTC20m
2026-04-14 NOK173 - Apr 14, 05:15 UTCApr 14, 05:25 UTC10m
2026-04-13 NOK550 - Apr 13, 23:05 UTCApr 13, 23:20 UTC15m
2026-04-13 NOK529 - Apr 13, 13:10 UTCApr 13, 13:55 UTC45m
2026-04-13 NOK528 - Apr 13, 10:50 UTCApr 13, 11:15 UTC25m
2026-04-13 NOK525 - Apr 13, 09:35 UTCApr 13, 10:00 UTC25m
2026-04-13 NOK524 - Apr 13, 06:50 UTCApr 13, 07:00 UTC10m
2026-04-13 NOK173 - Apr 13, 05:25 UTCApr 13, 05:40 UTC15m
2026-04-13 NOK172 - Apr 13, 03:05 UTCApr 13, 03:15 UTC10m
2026-04-13 NOK539 - Apr 13, 01:00 UTCApr 13, 01:45 UTC45m

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

Mode-S 881050 frequently asked

What is Mode-S code 881050?
881050 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-DBP.
Where is Mode-S 881050 registered?
Mode-S code 881050 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 881050 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 881050, octal 42010120, decimal 8,917,072.
What flights does 881050 operate?
Mode-S 881050 has broadcast 10 distinct callsigns, including NOK173, NOK550, NOK539, NOK529, NOK528.