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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
Broadcasting now · callsign THA923 · 21,200 ft
Flights observed
250
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 21:45 UTC

Current position

88516F is currently broadcasting. Map zoomed to live position.

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
THA971 Thai Airways International 17 2026-07-25
THA639 Thai Airways International 16 2026-07-21
THA638 - 16 2026-07-21
THA970 Thai Airways International 14 2026-07-24
THA683 Thai Airways International 13 2026-07-18
THA673 - 10 2026-06-24
THA672 - 10 2026-06-24
THA921 Thai Airways International 9 2026-07-22
THA920 Thai Airways International 9 2026-07-21
THA682 - 9 2026-07-17
THA601 Thai Airways International 8 2026-06-12
THA600 Thai Airways International 8 2026-06-12
THA923 Thai Airways International 7 2026-07-20
THA922 Thai Airways International 7 2026-07-20
THA917 Thai Airways International 7 2026-07-26
THA916 Thai Airways International 7 2026-07-26
THA951 - 6 2026-07-01
THA950 - 6 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA917 LHR → BKK Jul 26, 20:35 UTCJul 26, 21:45 UTC1h 10m
2026-07-26 THA916 BKK → LHR Jul 26, 06:15 UTCJul 26, 18:05 UTC11h 51m
2026-07-25 THA971 ZRH → BKK Jul 25, 12:00 UTCJul 25, 22:10 UTC10h 10m
2026-07-24 THA970 BKK → ZRH Jul 24, 18:30 UTCJul 25, 05:30 UTC11h 0m
2026-07-23 THA917 LHR → BKK Jul 23, 20:50 UTCJul 24, 07:50 UTC11h 0m
2026-07-23 THA916 BKK → LHR Jul 23, 06:10 UTCJul 23, 07:25 UTC1h 15m
2026-07-22 THA921 FRA → BKK Jul 22, 13:05 UTCJul 22, 23:20 UTC10h 15m
2026-07-21 THA920 BKK → FRA Jul 21, 17:20 UTCJul 22, 04:30 UTC11h 10m
2026-07-21 THA639 HKG → BKK Jul 21, 13:20 UTCJul 21, 13:50 UTC30m
2026-07-21 THA639 HKG → BKK Jul 21, 11:40 UTCJul 21, 11:50 UTC10m
2026-07-21 THA638 - Jul 21, 10:00 UTCJul 21, 10:05 UTC5m
2026-07-21 THA638 - Jul 21, 07:50 UTCJul 21, 08:15 UTC25m
2026-07-20 THA923 FRA → BKK Jul 20, 19:30 UTCJul 21, 05:35 UTC10h 4m
2026-07-20 THA922 BKK → FRA Jul 20, 05:40 UTCJul 20, 16:55 UTC11h 15m
2026-07-19 THA971 ZRH → BKK Jul 19, 11:55 UTCJul 19, 21:55 UTC10h 0m
2026-07-18 THA970 BKK → ZRH Jul 18, 18:20 UTCJul 19, 05:10 UTC10h 50m
2026-07-18 THA683 HND → BKK Jul 18, 06:55 UTCJul 18, 07:10 UTC15m
2026-07-18 THA683 HND → BKK Jul 18, 01:54 UTCJul 18, 05:00 UTC3h 6m
2026-07-17 THA682 - Jul 17, 16:15 UTCJul 17, 21:55 UTC5h 40m
2026-07-17 THA683 HND → BKK Jul 17, 07:00 UTCJul 17, 07:14 UTC15m
2026-07-17 THA683 HND → BKK Jul 17, 01:55 UTCJul 17, 05:04 UTC3h 10m
2026-07-16 THA682 - Jul 16, 18:19 UTCJul 16, 21:55 UTC3h 35m
2026-07-16 THA682 - Jul 16, 16:09 UTCJul 16, 16:19 UTC10m
2026-07-16 THA665 - Jul 16, 13:15 UTCJul 16, 13:45 UTC30m
2026-07-16 THA664 - Jul 16, 05:20 UTCJul 16, 11:40 UTC6h 20m
2026-07-16 THA664 - Jul 16, 04:10 UTCJul 16, 04:20 UTC10m
2026-07-15 THA971 - Jul 15, 13:50 UTCJul 16, 00:00 UTC10h 10m
2026-07-15 THA970D - Jul 15, 00:30 UTCJul 15, 01:40 UTC1h 10m
2026-07-14 THA971 - Jul 14, 12:25 UTCJul 14, 22:40 UTC10h 15m
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

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?
Yes. Mode-S 88516F is currently airborne.
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, THA971, THA639, THA638.