sensors Mode-S transponder
515309
ICAO 24-bit transponder address · allocated to Tajikistan
Currently assigned to EY-777 · BOEING 737-800
- Hex
- 515309
- Octal
- 24251411
- Decimal
- 5,329,673
- Country
- TJ
- Tail
- EY-777
- Type
- B738
- Flights observed
- 52
- Distinct callsigns
- 20
- Country
- TJ
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address 515309 falls within the block assigned to Tajikistan (TJ) by ICAO Annex 10, Volume III. Every aircraft registered in Tajikistan 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 |
|---|---|---|---|
| SMR103 | Somon Air | 10 | 2026-05-29 |
| SMR121 | Somon Air | 6 | 2026-05-01 |
| SMR104 | Somon Air | 4 | 2026-05-29 |
| SMR6424 | - | 3 | 2026-05-18 |
| SMR6410 | - | 3 | 2026-05-11 |
| SMR224 | - | 3 | 2026-05-04 |
| SMR122 | Somon Air | 3 | 2026-05-02 |
| SMR6420 | - | 2 | 2026-05-16 |
| SMR6418 | - | 2 | 2026-05-15 |
| SMR209 | Somon Air | 2 | 2026-05-19 |
| SMR109 | Somon Air | 2 | 2026-04-13 |
| SMR6425 | Somon Air | 1 | 2026-05-18 |
| SMR6422 | Somon Air | 1 | 2026-05-16 |
| SMR6416 | - | 1 | 2026-05-13 |
| SMR6411 | Somon Air | 1 | 2026-05-11 |
| SMR6407 | Somon Air | 1 | 2026-05-09 |
| SMR6402 | Somon Air | 1 | 2026-05-07 |
| SMR214 | Somon Air | 1 | 2026-05-21 |
| SMR213 | Somon Air | 1 | 2026-05-03 |
| SMR110 | - | 1 | 2026-04-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | SMR104 | IST → DYU | May 29, 08:05 UTC | May 29, 10:00 UTC | 1h 55m |
| 2026-05-29 | SMR103 | DYU → IST | May 29, 05:55 UTC | May 29, 06:25 UTC | 30m |
| 2026-05-29 | SMR103 | DYU → IST | May 29, 03:50 UTC | May 29, 05:15 UTC | 1h 25m |
| 2026-05-26 | SMR104 | IST → DYU | May 26, 08:30 UTC | May 26, 10:29 UTC | 2h 0m |
| 2026-05-26 | SMR103 | DYU → IST | May 26, 06:14 UTC | May 26, 06:25 UTC | 10m |
| 2026-05-25 | SMR103 | DYU → IST | May 25, 11:10 UTC | May 26, 05:30 UTC | 18h 19m |
| 2026-05-21 | SMR214 | KJA → DYU | May 21, 08:35 UTC | May 21, 13:50 UTC | 5h 15m |
| 2026-05-19 | SMR209 | DYU → SVX | May 19, 09:00 UTC | May 19, 21:00 UTC | 12h 0m |
| 2026-05-18 | SMR6425 | DWC → JED | May 18, 19:55 UTC | May 18, 20:10 UTC | 15m |
| 2026-05-18 | SMR6424 | - | May 18, 01:15 UTC | May 18, 01:40 UTC | 25m |
| 2026-05-17 | SMR6424 | - | May 17, 04:30 UTC | May 18, 01:40 UTC | 21h 10m |
| 2026-05-17 | SMR6424 | - | May 17, 02:20 UTC | May 18, 01:40 UTC | 23h 20m |
| 2026-05-16 | SMR6422 | JED → DYU | May 16, 20:30 UTC | May 17, 04:30 UTC | 8h 0m |
| 2026-05-16 | SMR6420 | - | May 16, 02:25 UTC | May 16, 16:05 UTC | 13h 41m |
| 2026-05-15 | SMR6420 | - | May 15, 17:30 UTC | May 16, 16:05 UTC | 22h 36m |
| 2026-05-15 | SMR6418 | - | May 15, 01:25 UTC | May 15, 17:35 UTC | 16h 9m |
| 2026-05-14 | SMR6418 | - | May 14, 04:55 UTC | May 15, 04:05 UTC | 23h 10m |
| 2026-05-13 | SMR6416 | - | May 13, 16:00 UTC | May 14, 05:00 UTC | 13h 0m |
| 2026-05-13 | - | - | May 13, 01:35 UTC | May 13, 16:00 UTC | 14h 25m |
| 2026-05-12 | - | - | May 12, 16:05 UTC | May 13, 01:40 UTC | 9h 35m |
| 2026-05-11 | SMR6411 | DYU → KRW | May 11, 16:20 UTC | May 12, 16:05 UTC | 23h 46m |
| 2026-05-11 | SMR6410 | - | May 11, 01:05 UTC | May 11, 16:35 UTC | 15h 30m |
| 2026-05-10 | SMR6410 | - | May 10, 20:05 UTC | May 11, 16:35 UTC | 20h 30m |
| 2026-05-10 | SMR6410 | - | May 10, 15:55 UTC | May 11, 01:34 UTC | 9h 40m |
| 2026-05-09 | SMR6407 | DYU → KRW | May 9, 20:34 UTC | May 10, 20:05 UTC | 23h 30m |
| 2026-05-07 | SMR6402 | JED → DYU | May 7, 01:30 UTC | May 7, 16:10 UTC | 14h 40m |
| 2026-05-06 | SMR106 | DXB → DYU | May 6, 01:40 UTC | May 6, 02:01 UTC | 20m |
| 2026-05-05 | SMR209 | DYU → SVX | May 5, 09:00 UTC | May 5, 20:40 UTC | 11h 40m |
| 2026-05-04 | SMR224 | - | May 4, 10:20 UTC | May 5, 09:10 UTC | 22h 51m |
| 2026-05-04 | SMR224 | - | May 4, 06:40 UTC | May 4, 11:15 UTC | 4h 35m |
| 2026-05-03 | SMR224 | - | May 3, 12:20 UTC | May 4, 11:15 UTC | 22h 55m |
| 2026-05-03 | SMR213 | DYU → KJA | May 3, 08:45 UTC | May 4, 07:15 UTC | 22h 30m |
| 2026-05-02 | SMR122 | MUC → DYU | May 2, 18:20 UTC | May 3, 12:45 UTC | 18h 24m |
| 2026-05-02 | SMR122 | MUC → DYU | May 2, 17:45 UTC | May 3, 12:45 UTC | 18h 59m |
| 2026-05-01 | SMR121 | TZX → MUC | May 1, 10:05 UTC | May 2, 03:50 UTC | 17h 45m |
| 2026-04-30 | SMR103 | DYU → IST | Apr 30, 11:55 UTC | May 1, 05:15 UTC | 17h 20m |
| 2026-04-30 | SMR103 | DYU → IST | Apr 30, 08:20 UTC | May 1, 05:15 UTC | 20h 55m |
| 2026-04-30 | SMR103 | DYU → IST | Apr 30, 08:10 UTC | May 1, 05:15 UTC | 21h 5m |
| 2026-04-21 | SMR104 | IST → DYU | Apr 21, 10:05 UTC | Apr 21, 11:00 UTC | 55m |
| 2026-04-20 | SMR103 | DYU → IST | Apr 20, 10:20 UTC | Apr 21, 05:10 UTC | 18h 51m |
| 2026-04-20 | SMR103 | DYU → IST | Apr 20, 09:50 UTC | Apr 21, 05:10 UTC | 19h 20m |
| 2026-04-20 | SMR103 | DYU → IST | Apr 20, 06:55 UTC | Apr 21, 05:10 UTC | 22h 16m |
| 2026-04-18 | SMR122 | - | Apr 18, 16:20 UTC | Apr 18, 20:05 UTC | 3h 45m |
| 2026-04-18 | SMR121 | TZX → MUC | Apr 18, 03:25 UTC | Apr 18, 04:15 UTC | 50m |
| 2026-04-18 | SMR121 | TZX → MUC | Apr 18, 02:25 UTC | Apr 18, 03:20 UTC | 55m |
| 2026-04-18 | SMR121 | TZX → MUC | Apr 18, 00:50 UTC | Apr 18, 01:15 UTC | 25m |
| 2026-04-17 | SMR121 | TZX → MUC | Apr 17, 23:25 UTC | Apr 18, 00:05 UTC | 40m |
| 2026-04-17 | SMR121 | TZX → MUC | Apr 17, 22:50 UTC | Apr 17, 23:20 UTC | 30m |
| 2026-04-14 | SMR104 | - | Apr 14, 09:10 UTC | Apr 14, 09:50 UTC | 40m |
| 2026-04-13 | SMR110 | - | Apr 13, 11:15 UTC | Apr 13, 11:50 UTC | 35m |
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 EY-777 page for operator, model, and routing details .