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sensors Mode-S transponder

88516C

ICAO 24-bit transponder address · allocated to Thailand

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

Hex
88516C
Octal
42050554
Decimal
8,933,740
Country
TH
Tail
HS-TKL
Type
B77W
Broadcasting now · callsign THA633 · 34,000 ft
Flights observed
217
Distinct callsigns
20
Country
TH
Last broadcast
2h ago

Current position

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

Country allocation

The ICAO 24-bit address 88516C 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
THA951 - 15 2026-07-03
THA950 - 14 2026-07-02
THA917 - 14 2026-06-29
THA923 - 12 2026-07-07
THA922 - 11 2026-07-07
THA601 - 11 2026-07-04
THA600 - 11 2026-07-04
THA916 - 10 2026-06-29
THA638 - 10 2026-07-08
THA683 - 9 2026-07-12
THA682 - 9 2026-07-11
THA639 - 8 2026-07-08
THA921 - 7 2026-07-09
THA920 - 7 2026-07-08
THA673 - 7 2026-06-27
THA672 - 7 2026-06-27
THA971 - 6 2026-07-13
THA970 - 6 2026-07-12
THA931 - 6 2026-06-19
THA315 Thai Airways International 6 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THA632 - Jul 14, 04:00 UTCJul 14, 05:05 UTC1h 5m
2026-07-14 THA632 - Jul 14, 01:50 UTCJul 14, 02:00 UTC10m
2026-07-13 THA971 - Jul 13, 11:50 UTCJul 13, 22:00 UTC10h 10m
2026-07-12 THA970 - Jul 12, 18:25 UTCJul 13, 02:35 UTC8h 10m
2026-07-12 THA410 - Jul 12, 14:55 UTCJul 12, 15:20 UTC25m
2026-07-12 THA410 - Jul 12, 13:20 UTCJul 12, 13:45 UTC25m
2026-07-12 THA409 - Jul 12, 11:01 UTCJul 12, 11:50 UTC50m
2026-07-12 THA409 - Jul 12, 09:55 UTCJul 12, 10:20 UTC25m
2026-07-12 THA683 - Jul 12, 06:55 UTCJul 12, 07:15 UTC20m
2026-07-12 THA683 - Jul 12, 01:40 UTCJul 12, 04:30 UTC2h 50m
2026-07-11 THA682 - Jul 11, 18:40 UTCJul 11, 21:55 UTC3h 15m
2026-07-11 THA682 - Jul 11, 16:00 UTCJul 11, 16:10 UTC10m
2026-07-10 THA346 - Jul 10, 19:30 UTCJul 10, 23:40 UTC4h 10m
2026-07-10 THA345 BKK → LHE Jul 10, 13:15 UTCJul 10, 15:40 UTC2h 25m
2026-07-10 THA633 - Jul 10, 06:50 UTCJul 10, 10:00 UTC3h 10m
2026-07-10 THA632 - Jul 10, 01:55 UTCJul 10, 05:10 UTC3h 15m
2026-07-09 THA921 - Jul 9, 13:05 UTCJul 9, 23:10 UTC10h 5m
2026-07-08 THA920 - Jul 8, 17:10 UTCJul 9, 04:15 UTC11h 5m
2026-07-08 THA639 - Jul 8, 13:35 UTCJul 8, 14:40 UTC1h 5m
2026-07-08 THA639 - Jul 8, 11:55 UTCJul 8, 12:05 UTC10m
2026-07-08 THA638 - Jul 8, 09:40 UTCJul 8, 09:55 UTC15m
2026-07-08 THA638 - Jul 8, 07:20 UTCJul 8, 07:45 UTC25m
2026-07-07 THA923 - Jul 7, 19:10 UTCJul 8, 05:20 UTC10h 10m
2026-07-07 THA922 - Jul 7, 05:50 UTCJul 7, 17:05 UTC11h 15m
2026-07-06 THA661 HND → BKK Jul 6, 15:20 UTCJul 6, 20:55 UTC5h 35m
2026-07-06 THA660 - Jul 6, 06:20 UTCJul 6, 12:00 UTC5h 40m
2026-07-05 THA921 FRA → BKK Jul 5, 13:20 UTCJul 5, 23:20 UTC10h 0m
2026-07-04 THA920 - Jul 4, 17:15 UTCJul 5, 04:10 UTC10h 55m
2026-07-04 THA601 - Jul 4, 08:25 UTCJul 4, 08:55 UTC30m
2026-07-04 THA601 - Jul 4, 06:35 UTCJul 4, 06:50 UTC15m
2026-07-04 THA600 - Jul 4, 03:35 UTCJul 4, 03:45 UTC10m
2026-07-04 THA600 - Jul 4, 01:30 UTCJul 4, 01:55 UTC25m
2026-07-03 THA951 - Jul 3, 13:00 UTCJul 3, 23:25 UTC10h 25m
2026-07-02 THA950 - Jul 2, 18:35 UTCJul 3, 04:20 UTC9h 45m
2026-07-02 THA410 - Jul 2, 13:10 UTCJul 2, 15:05 UTC1h 55m
2026-07-02 THA409 - Jul 2, 09:45 UTCJul 2, 11:35 UTC1h 50m
2026-07-02 THA683 HND → BKK Jul 2, 01:40 UTCJul 2, 07:25 UTC5h 45m
2026-07-01 THA682 - Jul 1, 18:10 UTCJul 1, 21:35 UTC3h 25m
2026-07-01 THA683 - Jul 1, 07:20 UTCJul 1, 07:40 UTC20m
2026-07-01 THA683 - Jul 1, 02:00 UTCJul 1, 05:10 UTC3h 10m
2026-06-30 THA682 - Jun 30, 16:10 UTCJun 30, 22:05 UTC5h 55m
2026-06-29 THA917 - Jun 29, 20:49 UTCJun 30, 08:00 UTC11h 11m
2026-06-29 THA916 - Jun 29, 06:05 UTCJun 29, 17:55 UTC11h 50m
2026-06-28 THA951 - Jun 28, 12:55 UTCJun 28, 22:59 UTC10h 5m
2026-06-27 THA950 - Jun 27, 18:35 UTCJun 28, 02:39 UTC8h 5m
2026-06-27 THA673 KIX → BKK Jun 27, 08:44 UTCJun 27, 14:00 UTC5h 15m
2026-06-27 THA672 - Jun 27, 01:49 UTCJun 27, 06:44 UTC4h 55m
2026-06-26 THA951 - Jun 26, 12:50 UTCJun 26, 23:09 UTC10h 20m
2026-06-25 THA950 - Jun 25, 18:34 UTCJun 25, 22:14 UTC3h 40m
2026-06-25 THA404 - Jun 25, 04:45 UTCJun 25, 06:44 UTC2h 0m

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

Mode-S 88516C frequently asked

What is Mode-S code 88516C?
88516C is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TKL.
Where is Mode-S 88516C registered?
Mode-S code 88516C is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88516C broadcasting right now?
Yes. Mode-S 88516C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88516C, octal 42050554, decimal 8,933,740.
What flights does 88516C operate?
Mode-S 88516C has broadcast 20 distinct callsigns, including THA951, THA950, THA917, THA923, THA922.