sensors Mode-S transponder
88516D
ICAO 24-bit transponder address · allocated to Thailand
Currently assigned to HS-TKM · BOEING 777-300ER
- Hex
- 88516D
- Octal
- 42050555
- Decimal
- 8,933,741
- Country
- TH
- Tail
- HS-TKM
- Type
- B77W
- Flights observed
- 122
- Distinct callsigns
- 20
- Country
- TH
- Last broadcast
- 4h ago
Current position
Country allocation
The ICAO 24-bit address 88516D 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 |
|---|---|---|---|
| THA920 | Thai Airways International | 13 | 2026-05-24 |
| THA921 | Thai Airways International | 10 | 2026-05-25 |
| THA931 | Thai Airways International | 9 | 2026-05-27 |
| THA930 | Thai Airways International | 8 | 2026-05-26 |
| THA673 | Thai Airways International | 8 | 2026-05-24 |
| THA601 | Thai Airways International | 8 | 2026-05-07 |
| THA600 | Thai Airways International | 8 | 2026-05-07 |
| THA950 | Thai Airways International | 6 | 2026-05-22 |
| THA971 | Thai Airways International | 5 | 2026-05-06 |
| THA970 | Thai Airways International | 5 | 2026-05-29 |
| THA683 | Thai Airways International | 5 | 2026-05-29 |
| THA682 | Thai Airways International | 5 | 2026-05-28 |
| THA951 | Thai Airways International | 4 | 2026-05-23 |
| THA922 | Thai Airways International | 4 | 2026-05-17 |
| THA917 | Thai Airways International | 4 | 2026-05-21 |
| THA672 | Thai Airways International | 4 | 2026-05-24 |
| THA639 | Thai Airways International | 4 | 2026-05-26 |
| THA638 | Thai Airways International | 4 | 2026-05-26 |
| THA923 | Thai Airways International | 3 | 2026-05-17 |
| THA916 | Thai Airways International | 3 | 2026-05-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | THA970 | BKK → ZRH | May 29, 18:30 UTC | May 29, 22:35 UTC | 4h 5m |
| 2026-05-29 | THA683 | HND → BKK | May 29, 02:15 UTC | May 29, 08:15 UTC | 6h 0m |
| 2026-05-28 | THA682 | BKK → HND | May 28, 16:05 UTC | May 28, 21:35 UTC | 5h 30m |
| 2026-05-27 | THA931 | CDG → BKK | May 27, 12:00 UTC | May 27, 22:30 UTC | 10h 30m |
| 2026-05-26 | THA930 | BKK → CDG | May 26, 18:55 UTC | May 27, 06:55 UTC | 12h 0m |
| 2026-05-26 | THA639 | HKG → BKK | May 26, 13:10 UTC | May 26, 13:54 UTC | 45m |
| 2026-05-26 | THA639 | HKG → BKK | May 26, 11:34 UTC | May 26, 11:44 UTC | 10m |
| 2026-05-26 | THA638 | BKK → HKG | May 26, 09:29 UTC | May 26, 09:55 UTC | 25m |
| 2026-05-26 | THA638 | BKK → HKG | May 26, 07:29 UTC | May 26, 08:04 UTC | 35m |
| 2026-05-25 | THA921 | FRA → BKK | May 25, 13:00 UTC | May 25, 23:14 UTC | 10h 14m |
| 2026-05-24 | THA920 | BKK → FRA | May 24, 17:10 UTC | May 24, 18:05 UTC | 55m |
| 2026-05-24 | THA673 | KIX → BKK | May 24, 08:50 UTC | May 24, 13:50 UTC | 5h 0m |
| 2026-05-24 | THA672 | BKK → KIX | May 24, 01:45 UTC | May 24, 06:45 UTC | 5h 0m |
| 2026-05-23 | THA951 | CPH → BKK | May 23, 13:05 UTC | May 23, 23:05 UTC | 10h 0m |
| 2026-05-22 | THA950 | BKK → CPH | May 22, 18:20 UTC | May 22, 22:10 UTC | 3h 50m |
| 2026-05-21 | THA917 | LHR → BKK | May 21, 20:50 UTC | May 22, 07:50 UTC | 11h 0m |
| 2026-05-21 | THA916 | BKK → LHR | May 21, 06:05 UTC | May 21, 18:00 UTC | 11h 55m |
| 2026-05-20 | THA683 | HND → BKK | May 20, 02:10 UTC | May 20, 08:00 UTC | 5h 51m |
| 2026-05-19 | THA682 | BKK → HND | May 19, 16:10 UTC | May 19, 21:45 UTC | 5h 35m |
| 2026-05-19 | THA683 | HND → BKK | May 19, 01:45 UTC | May 19, 07:20 UTC | 5h 35m |
| 2026-05-18 | THA682 | BKK → HND | May 18, 16:05 UTC | May 18, 21:50 UTC | 5h 44m |
| 2026-05-17 | THA923 | FRA → BKK | May 17, 19:05 UTC | May 18, 05:30 UTC | 10h 25m |
| 2026-05-17 | THA922 | BKK → FRA | May 17, 05:45 UTC | May 17, 13:45 UTC | 8h 0m |
| 2026-05-16 | THA951 | CPH → BKK | May 16, 12:40 UTC | May 16, 23:05 UTC | 10h 25m |
| 2026-05-15 | THA950 | BKK → CPH | May 15, 18:15 UTC | May 15, 19:15 UTC | 1h 0m |
| 2026-05-15 | THA683 | HND → BKK | May 15, 02:00 UTC | May 15, 07:45 UTC | 5h 45m |
| 2026-05-14 | THA682 | BKK → HND | May 14, 16:05 UTC | May 14, 21:20 UTC | 5h 15m |
| 2026-05-14 | THA683 | HND → BKK | May 14, 02:20 UTC | May 14, 08:15 UTC | 5h 55m |
| 2026-05-13 | THA682 | BKK → HND | May 13, 16:05 UTC | May 13, 21:20 UTC | 5h 15m |
| 2026-05-12 | THA921 | FRA → BKK | May 12, 13:00 UTC | May 12, 23:10 UTC | 10h 10m |
| 2026-05-11 | THA920 | BKK → FRA | May 11, 17:25 UTC | May 12, 04:50 UTC | 11h 25m |
| 2026-05-11 | THA623 | KIX → BKK | May 11, 05:15 UTC | May 11, 10:40 UTC | 5h 25m |
| 2026-05-10 | THA622 | BKK → KIX | May 10, 17:55 UTC | May 10, 22:55 UTC | 5h 0m |
| 2026-05-09 | THA923 | FRA → BKK | May 9, 19:00 UTC | May 10, 02:30 UTC | 7h 30m |
| 2026-05-09 | THA922 | BKK → FRA | May 9, 05:40 UTC | May 9, 06:35 UTC | 55m |
| 2026-05-08 | THA951 | CPH → BKK | May 8, 13:00 UTC | May 8, 23:00 UTC | 10h 0m |
| 2026-05-08 | THA950 | BKK → CPH | May 8, 05:24 UTC | May 8, 05:39 UTC | 15m |
| 2026-05-07 | THA950 | BKK → CPH | May 7, 19:30 UTC | May 7, 22:05 UTC | 2h 35m |
| 2026-05-07 | THA950 | BKK → CPH | May 7, 18:15 UTC | May 7, 18:30 UTC | 15m |
| 2026-05-07 | THA601 | HKG → BKK | May 7, 06:55 UTC | May 7, 07:45 UTC | 50m |
| 2026-05-07 | THA601 | HKG → BKK | May 7, 05:15 UTC | May 7, 05:30 UTC | 15m |
| 2026-05-07 | THA600 | BKK → HKG | May 7, 03:20 UTC | May 7, 03:25 UTC | 5m |
| 2026-05-07 | THA600 | BKK → HKG | May 7, 01:20 UTC | May 7, 01:55 UTC | 35m |
| 2026-05-06 | THA971 | ZRH → BKK | May 6, 12:05 UTC | May 6, 22:05 UTC | 9h 59m |
| 2026-05-05 | THA970 | BKK → ZRH | May 5, 18:30 UTC | May 5, 22:25 UTC | 3h 55m |
| 2026-05-05 | THA673 | KIX → BKK | May 5, 09:00 UTC | May 5, 14:30 UTC | 5h 30m |
| 2026-05-05 | THA672 | BKK → KIX | May 5, 01:45 UTC | May 5, 06:30 UTC | 4h 45m |
| 2026-05-04 | THA971 | ZRH → BKK | May 4, 11:40 UTC | May 4, 21:20 UTC | 9h 41m |
| 2026-05-03 | THA970 | BKK → ZRH | May 3, 18:30 UTC | May 3, 22:30 UTC | 4h 0m |
| 2026-05-03 | THA601 | HKG → BKK | May 3, 07:05 UTC | May 3, 08:00 UTC | 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-TKM page for operator, model, and routing details .