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
- Flights observed
- 127
- Distinct callsigns
- 20
- Country
- TH
- Last broadcast
- 4h ago
Last known 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 | Thai Airways International | 23 | 2026-05-25 |
| THA931 | Thai Airways International | 13 | 2026-05-26 |
| THA971 | Thai Airways International | 10 | 2026-05-22 |
| THA970 | Thai Airways International | 8 | 2026-05-21 |
| THA639 | Thai Airways International | 8 | 2026-05-14 |
| THA638 | Thai Airways International | 8 | 2026-05-14 |
| THA683 | Thai Airways International | 6 | 2026-05-28 |
| THA673 | Thai Airways International | 6 | 2026-05-10 |
| THA601 | Thai Airways International | 6 | 2026-05-16 |
| THA600 | Thai Airways International | 6 | 2026-05-16 |
| THA672 | Thai Airways International | 5 | 2026-05-10 |
| THA951 | Thai Airways International | 3 | 2026-05-24 |
| THA950 | Thai Airways International | 3 | 2026-05-23 |
| THA921 | Thai Airways International | 3 | 2026-05-29 |
| THA920 | Thai Airways International | 3 | 2026-05-28 |
| THA682 | Thai Airways International | 3 | 2026-05-27 |
| THA665 | Thai Airways International | 3 | 2026-04-23 |
| THA623 | Thai Airways International | 3 | 2026-05-06 |
| THA923 | Thai Airways International | 1 | 2026-04-25 |
| THA922 | Thai Airways International | 1 | 2026-04-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | THA921 | FRA → BKK | May 29, 13:00 UTC | May 29, 22:30 UTC | 9h 30m |
| 2026-05-28 | THA920 | BKK → FRA | May 28, 17:20 UTC | May 29, 05:00 UTC | 11h 40m |
| 2026-05-28 | THA683 | HND → BKK | May 28, 01:40 UTC | May 28, 07:10 UTC | 5h 30m |
| 2026-05-27 | THA682 | BKK → HND | May 27, 16:05 UTC | May 27, 21:50 UTC | 5h 45m |
| 2026-05-26 | THA931 | CDG → BKK | May 26, 12:10 UTC | May 26, 22:35 UTC | 10h 25m |
| 2026-05-25 | THA930 | BKK → CDG | May 25, 17:30 UTC | May 26, 05:30 UTC | 11h 59m |
| 2026-05-24 | THA951 | CPH → BKK | May 24, 13:15 UTC | May 24, 23:30 UTC | 10h 15m |
| 2026-05-23 | THA950 | BKK → CPH | May 23, 18:10 UTC | May 23, 22:05 UTC | 3h 55m |
| 2026-05-22 | THA971 | ZRH → BKK | May 22, 12:15 UTC | May 22, 22:20 UTC | 10h 5m |
| 2026-05-21 | THA970 | BKK → ZRH | May 21, 18:30 UTC | May 22, 02:45 UTC | 8h 15m |
| 2026-05-21 | THA404 | SIN → BKK | May 21, 04:55 UTC | May 21, 06:55 UTC | 2h 0m |
| 2026-05-21 | THA403 | BKK → SIN | May 21, 01:15 UTC | May 21, 02:45 UTC | 1h 30m |
| 2026-05-20 | THA971 | ZRH → BKK | May 20, 11:55 UTC | May 20, 22:25 UTC | 10h 30m |
| 2026-05-19 | THA970 | BKK → ZRH | May 19, 18:30 UTC | May 20, 05:40 UTC | 11h 11m |
| 2026-05-18 | THA917 | LHR → BKK | May 18, 20:30 UTC | May 19, 07:55 UTC | 11h 25m |
| 2026-05-18 | THA916 | BKK → LHR | May 18, 05:50 UTC | May 18, 18:00 UTC | 12h 10m |
| 2026-05-17 | THA931 | CDG → BKK | May 17, 11:50 UTC | May 17, 22:25 UTC | 10h 35m |
| 2026-05-16 | THA930 | BKK → CDG | May 16, 19:15 UTC | May 17, 05:15 UTC | 9h 59m |
| 2026-05-16 | THA930 | BKK → CDG | May 16, 17:35 UTC | May 16, 17:50 UTC | 15m |
| 2026-05-16 | THA601 | HKG → BKK | May 16, 07:16 UTC | May 16, 07:55 UTC | 40m |
| 2026-05-16 | THA601 | HKG → BKK | May 16, 05:40 UTC | May 16, 05:51 UTC | 11m |
| 2026-05-16 | THA600 | BKK → HKG | May 16, 03:30 UTC | May 16, 03:35 UTC | 5m |
| 2026-05-16 | THA600 | BKK → HKG | May 16, 01:20 UTC | May 16, 01:55 UTC | 35m |
| 2026-05-15 | THA931 | CDG → BKK | May 15, 12:05 UTC | May 15, 22:55 UTC | 10h 49m |
| 2026-05-14 | THA930 | BKK → CDG | May 14, 17:35 UTC | May 15, 05:15 UTC | 11h 40m |
| 2026-05-14 | THA639 | HKG → BKK | May 14, 13:15 UTC | May 14, 13:55 UTC | 40m |
| 2026-05-14 | THA639 | HKG → BKK | May 14, 11:30 UTC | May 14, 11:45 UTC | 15m |
| 2026-05-14 | THA638 | BKK → HKG | May 14, 09:25 UTC | May 14, 09:35 UTC | 10m |
| 2026-05-14 | THA638 | BKK → HKG | May 14, 07:20 UTC | May 14, 07:55 UTC | 35m |
| 2026-05-13 | THA931 | CDG → BKK | May 13, 11:55 UTC | May 13, 22:35 UTC | 10h 40m |
| 2026-05-12 | THA930 | BKK → CDG | May 12, 17:25 UTC | May 12, 18:20 UTC | 55m |
| 2026-05-12 | THA639 | HKG → BKK | May 12, 13:15 UTC | May 12, 13:55 UTC | 40m |
| 2026-05-12 | THA639 | HKG → BKK | May 12, 11:40 UTC | May 12, 11:50 UTC | 10m |
| 2026-05-12 | THA638 | BKK → HKG | May 12, 09:35 UTC | May 12, 10:00 UTC | 25m |
| 2026-05-12 | THA638 | BKK → HKG | May 12, 07:35 UTC | May 12, 08:15 UTC | 40m |
| 2026-05-11 | THA921 | FRA → BKK | May 11, 13:10 UTC | May 11, 22:15 UTC | 9h 5m |
| 2026-05-10 | THA920 | BKK → FRA | May 10, 17:10 UTC | May 11, 04:35 UTC | 11h 25m |
| 2026-05-10 | THA673 | KIX → BKK | May 10, 08:50 UTC | May 10, 14:20 UTC | 5h 30m |
| 2026-05-10 | THA672 | BKK → KIX | May 10, 02:14 UTC | May 10, 06:59 UTC | 4h 45m |
| 2026-05-09 | THA601 | HKG → BKK | May 9, 07:00 UTC | May 9, 07:40 UTC | 40m |
| 2026-05-09 | THA601 | HKG → BKK | May 9, 05:20 UTC | May 9, 05:30 UTC | 10m |
| 2026-05-09 | THA600 | BKK → HKG | May 9, 03:20 UTC | May 9, 03:25 UTC | 5m |
| 2026-05-09 | THA600 | BKK → HKG | May 9, 01:20 UTC | May 9, 01:55 UTC | 35m |
| 2026-05-08 | THA931 | CDG → BKK | May 8, 12:00 UTC | May 8, 21:45 UTC | 9h 45m |
| 2026-05-08 | THA930 | BKK → CDG | May 8, 00:34 UTC | May 8, 05:29 UTC | 4h 55m |
| 2026-05-07 | THA930 | BKK → CDG | May 7, 17:30 UTC | May 7, 17:45 UTC | 15m |
| 2026-05-06 | THA623 | KIX → BKK | May 6, 17:55 UTC | May 7, 09:15 UTC | 15h 20m |
| 2026-05-05 | THA623 | KIX → BKK | May 5, 18:00 UTC | May 6, 09:05 UTC | 15h 5m |
| 2026-05-04 | THA921 | FRA → BKK | May 4, 12:55 UTC | May 4, 22:30 UTC | 9h 36m |
| 2026-05-03 | THA920 | BKK → FRA | May 3, 17:20 UTC | May 4, 04:15 UTC | 10h 55m |
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 .