Apparatus

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sensors Mode-S transponder

88434B

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-PZK · ATR-72-600

Hex
88434B
Octal
42041513
Decimal
8,930,123
Country
TH
Tail
HS-PZK
Type
AT76
No current signal · last broadcast 3h ago
Flights observed
29
Distinct callsigns
16
Country
TH
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 88434B.

Country allocation

The ICAO 24-bit address 88434B 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 16 distinct

Callsign Airline Flights Last seen
BKP305 Bangkok Airways 4 2026-04-18
BKP176 Bangkok Airways 3 2026-04-17
BKP942 Bangkok Airways 2 2026-04-16
BKP451 Bangkok Airways 2 2026-04-17
BKP450 Bangkok Airways 2 2026-04-17
BKP306 Bangkok Airways 2 2026-04-18
BKP302 Bangkok Airways 2 2026-04-18
BKP301 Bangkok Airways 2 2026-04-18
BKP157 Bangkok Airways 2 2026-04-18
BKP941 Bangkok Airways 1 2026-04-16
BKP5188 - 1 2026-04-15
BKP281 - 1 2026-04-14
BKP214 - 1 2026-04-16
BKP213 - 1 2026-04-16
BKP193 Bangkok Airways 1 2026-04-16
BKP188 Bangkok Airways 1 2026-04-18

Recent flights last 29

DateFlightRouteTakeoffLandingDuration
2026-04-18 BKP188 USM → BKK Apr 18, 13:50 UTCApr 18, 14:15 UTC25m
2026-04-18 BKP157 BKK → USM Apr 18, 08:00 UTCApr 18, 08:20 UTC20m
2026-04-18 BKP306 TDX → BKK Apr 18, 06:30 UTCApr 18, 07:00 UTC30m
2026-04-18 BKP305 BKK → TDX Apr 18, 04:45 UTCApr 18, 05:00 UTC15m
2026-04-18 BKP305 BKK → TDX Apr 18, 04:40 UTCApr 18, 05:00 UTC20m
2026-04-18 BKP302 TDX → BKK Apr 18, 02:55 UTCApr 18, 03:20 UTC25m
2026-04-18 BKP301 BKK → TDX Apr 18, 01:25 UTCApr 18, 01:45 UTC20m
2026-04-17 BKP176 USM → BKK Apr 17, 13:20 UTCApr 17, 13:35 UTC15m
2026-04-17 BKP176 USM → BKK Apr 17, 13:05 UTCApr 17, 13:15 UTC10m
2026-04-17 BKP451 DMK → USM Apr 17, 02:20 UTCApr 17, 02:45 UTC25m
2026-04-17 BKP450 USM → DMK Apr 17, 00:44 UTCApr 17, 01:15 UTC30m
2026-04-16 BKP193 BKK → USM Apr 16, 13:15 UTCApr 16, 13:44 UTC30m
2026-04-16 BKP214 - Apr 16, 11:15 UTCApr 16, 12:05 UTC50m
2026-04-16 BKP213 - Apr 16, 09:10 UTCApr 16, 09:45 UTC35m
2026-04-16 BKP942 LPQ → BKK Apr 16, 07:09 UTCApr 16, 07:19 UTC10m
2026-04-16 BKP942 LPQ → BKK Apr 16, 06:49 UTCApr 16, 07:05 UTC15m
2026-04-16 BKP941 BKK → LPQ Apr 16, 03:09 UTCApr 16, 03:34 UTC25m
2026-04-15 BKP5188 - Apr 15, 13:40 UTCApr 15, 14:10 UTC30m
2026-04-15 BKP157 BKK → USM Apr 15, 08:20 UTCApr 15, 08:55 UTC35m
2026-04-15 BKP306 TDX → BKK Apr 15, 06:10 UTCApr 15, 06:50 UTC40m
2026-04-15 BKP305 BKK → TDX Apr 15, 05:00 UTCApr 15, 05:10 UTC10m
2026-04-15 BKP305 BKK → TDX Apr 15, 04:40 UTCApr 15, 04:50 UTC10m
2026-04-15 BKP302 TDX → BKK Apr 15, 03:00 UTCApr 15, 03:40 UTC40m
2026-04-15 BKP301 BKK → TDX Apr 15, 01:25 UTCApr 15, 01:55 UTC30m
2026-04-14 BKP176 USM → BKK Apr 14, 12:50 UTCApr 14, 13:25 UTC35m
2026-04-14 BKP281 - Apr 14, 06:30 UTCApr 14, 06:45 UTC15m
2026-04-13 - - Apr 13, 08:55 UTCApr 13, 09:05 UTC10m
2026-04-13 BKP451 - Apr 13, 02:05 UTCApr 13, 02:30 UTC25m
2026-04-13 BKP450 - Apr 13, 00:45 UTCApr 13, 01:15 UTC30m

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

Mode-S 88434B frequently asked

What is Mode-S code 88434B?
88434B is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-PZK.
Where is Mode-S 88434B registered?
Mode-S code 88434B is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88434B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88434B, octal 42041513, decimal 8,930,123.
What flights does 88434B operate?
Mode-S 88434B has broadcast 16 distinct callsigns, including BKP305, BKP176, BKP942, BKP451, BKP450.