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sensors Mode-S transponder

88516F

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-TKO · BOEING 777-300ER

Hex
88516F
Octal
42050557
Decimal
8,933,743
Country
TH
Tail
HS-TKO
Type
B77W
No current signal · last broadcast 8h ago
Flights observed
221
Distinct callsigns
20
Country
TH
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 88516F.

Country allocation

The ICAO 24-bit address 88516F 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 20 distinct

Callsign Airline Flights Last seen
THA930 - 29 2026-07-09
THA931 - 19 2026-07-10
THA639 - 14 2026-07-09
THA638 - 14 2026-07-09
THA971 - 13 2026-06-19
THA970 - 12 2026-07-13
THA673 - 10 2026-06-24
THA672 - 10 2026-06-24
THA683 - 9 2026-07-13
THA921 - 8 2026-06-28
THA920 - 8 2026-06-27
THA601 Thai Airways International 8 2026-06-12
THA600 Thai Airways International 8 2026-06-12
THA951 - 6 2026-07-01
THA950 - 6 2026-06-30
THA923 - 6 2026-07-08
THA922 - 6 2026-07-08
THA682 - 6 2026-07-12
THA917 - 5 2026-07-11
THA916 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 THA970 - Jul 13, 18:15 UTCJul 13, 19:25 UTC1h 10m
2026-07-13 THA683 - Jul 13, 06:55 UTCJul 13, 07:20 UTC25m
2026-07-13 THA683 - Jul 13, 01:55 UTCJul 13, 04:55 UTC3h 0m
2026-07-12 THA682 - Jul 12, 18:20 UTCJul 12, 21:40 UTC3h 20m
2026-07-12 THA682 - Jul 12, 15:55 UTCJul 12, 16:10 UTC15m
2026-07-11 THA917 - Jul 11, 20:50 UTCJul 12, 07:20 UTC10h 30m
2026-07-11 THA916 - Jul 11, 06:15 UTCJul 11, 18:15 UTC12h 0m
2026-07-10 THA931 - Jul 10, 12:10 UTCJul 10, 22:30 UTC10h 21m
2026-07-09 THA930 - Jul 9, 17:30 UTCJul 9, 18:40 UTC1h 10m
2026-07-09 THA639 - Jul 9, 13:30 UTCJul 9, 14:00 UTC30m
2026-07-09 THA639 - Jul 9, 11:50 UTCJul 9, 12:05 UTC15m
2026-07-09 THA638 - Jul 9, 10:00 UTCJul 9, 10:20 UTC20m
2026-07-09 THA638 - Jul 9, 08:00 UTCJul 9, 08:25 UTC25m
2026-07-08 THA923 - Jul 8, 19:15 UTCJul 9, 05:30 UTC10h 15m
2026-07-08 THA922 BKK → FRA Jul 8, 05:45 UTCJul 8, 17:10 UTC11h 25m
2026-07-07 THA931 - Jul 7, 12:15 UTCJul 7, 22:50 UTC10h 35m
2026-07-06 THA930 - Jul 6, 17:30 UTCJul 7, 05:10 UTC11h 40m
2026-07-06 THA639 - Jul 6, 13:35 UTCJul 6, 14:35 UTC1h 0m
2026-07-06 THA639 - Jul 6, 12:15 UTCJul 6, 12:25 UTC10m
2026-07-06 THA638 - Jul 6, 09:40 UTCJul 6, 10:05 UTC25m
2026-07-06 THA638 - Jul 6, 07:25 UTCJul 6, 08:15 UTC50m
2026-07-05 THA923 - Jul 5, 19:15 UTCJul 6, 04:00 UTC8h 45m
2026-07-05 THA922 - Jul 5, 05:40 UTCJul 5, 16:55 UTC11h 15m
2026-07-04 THA931 - Jul 4, 12:00 UTCJul 4, 22:45 UTC10h 45m
2026-07-03 THA930 BKK → CDG Jul 3, 17:25 UTCJul 4, 05:00 UTC11h 35m
2026-07-03 THA639 - Jul 3, 13:25 UTCJul 3, 14:55 UTC1h 30m
2026-07-03 THA639 - Jul 3, 12:30 UTCJul 3, 12:40 UTC10m
2026-07-03 THA638 - Jul 3, 09:40 UTCJul 3, 09:50 UTC10m
2026-07-03 THA638 - Jul 3, 07:35 UTCJul 3, 07:45 UTC10m
2026-07-02 THA923 - Jul 2, 19:15 UTCJul 3, 05:30 UTC10h 15m
2026-07-02 THA922 - Jul 2, 05:45 UTCJul 2, 08:10 UTC2h 25m
2026-07-01 THA951 - Jul 1, 13:45 UTCJul 1, 23:40 UTC9h 55m
2026-06-30 THA950 - Jun 30, 18:25 UTCJul 1, 05:25 UTC11h 0m
2026-06-29 THA923 - Jun 29, 19:09 UTCJun 30, 05:25 UTC10h 16m
2026-06-29 THA922 - Jun 29, 05:40 UTCJun 29, 16:50 UTC11h 10m
2026-06-28 THA921 - Jun 28, 13:19 UTCJun 28, 23:29 UTC10h 10m
2026-06-27 THA920 - Jun 27, 17:09 UTCJun 28, 04:15 UTC11h 5m
2026-06-26 THA917 - Jun 26, 20:59 UTCJun 27, 08:14 UTC11h 15m
2026-06-26 THA916 - Jun 26, 06:04 UTCJun 26, 17:59 UTC11h 55m
2026-06-25 THA921 - Jun 25, 13:24 UTCJun 25, 23:34 UTC10h 10m
2026-06-24 THA920 - Jun 24, 17:29 UTCJun 25, 04:14 UTC10h 45m
2026-06-24 THA673 KIX → BKK Jun 24, 09:00 UTCJun 24, 14:04 UTC5h 5m
2026-06-24 THA672 - Jun 24, 06:55 UTCJun 24, 07:05 UTC10m
2026-06-24 THA672 - Jun 24, 01:49 UTCJun 24, 04:50 UTC3h 0m
2026-06-23 THA931 - Jun 23, 12:05 UTCJun 23, 22:49 UTC10h 45m
2026-06-22 THA930 - Jun 22, 17:44 UTCJun 23, 05:34 UTC11h 50m
2026-06-22 THA673 - Jun 22, 08:54 UTCJun 22, 13:59 UTC5h 5m
2026-06-22 THA672 - Jun 22, 01:49 UTCJun 22, 07:00 UTC5h 10m
2026-06-21 THA951 - Jun 21, 12:55 UTCJun 21, 23:05 UTC10h 10m
2026-06-20 THA950 - Jun 20, 18:40 UTCJun 21, 05:54 UTC11h 15m

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

Mode-S 88516F frequently asked

What is Mode-S code 88516F?
88516F is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TKO.
Where is Mode-S 88516F registered?
Mode-S code 88516F is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88516F broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88516F, octal 42050557, decimal 8,933,743.
What flights does 88516F operate?
Mode-S 88516F has broadcast 20 distinct callsigns, including THA930, THA931, THA639, THA638, THA971.