sensors Mode-S transponder
151E2B
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73259 · BOEING 737-300
- Hex
- 151E2B
- Octal
- 05217053
- Decimal
- 1,383,979
- Country
- RU
- Tail
- RA-73259
- Type
- B733
- Flights observed
- 22
- Distinct callsigns
- 3
- Country
- RU
- Last broadcast
- 21h ago
Last known position
Country allocation
The ICAO 24-bit address 151E2B falls within the block assigned to Russia (RU) by ICAO Annex 10, Volume III. Every aircraft registered in Russia 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 3 distinct
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | TYA1091 | DME → KRO | May 28, 23:15 UTC | May 29, 08:40 UTC | 9h 25m |
| 2026-05-28 | TYA1091 | DME → KRO | May 28, 03:25 UTC | May 28, 23:55 UTC | 20h 30m |
| 2026-05-26 | TYA534 | TYN → KJA | May 26, 03:09 UTC | May 26, 23:25 UTC | 20h 15m |
| 2026-05-25 | TYA1092 | KRO → DME | May 25, 08:50 UTC | May 26, 03:40 UTC | 18h 49m |
| 2026-05-25 | TYA1092 | KRO → DME | May 25, 08:00 UTC | May 26, 03:40 UTC | 19h 39m |
| 2026-05-20 | TYA1091 | DME → KRO | May 20, 23:40 UTC | May 21, 00:00 UTC | 20m |
| 2026-05-20 | TYA534 | TYN → KJA | May 20, 02:50 UTC | May 20, 03:00 UTC | 10m |
| 2026-05-19 | TYA534 | TYN → KJA | May 19, 10:30 UTC | May 19, 23:15 UTC | 12h 45m |
| 2026-05-12 | TYA534 | TYN → KJA | May 12, 22:20 UTC | May 13, 02:00 UTC | 3h 40m |
| 2026-05-12 | TYA534 | TYN → KJA | May 12, 03:30 UTC | May 13, 02:00 UTC | 22h 30m |
| 2026-05-08 | TYA534 | TYN → KJA | May 8, 10:39 UTC | May 8, 23:30 UTC | 12h 50m |
| 2026-05-08 | TYA534 | TYN → KJA | May 8, 04:04 UTC | May 8, 23:30 UTC | 19h 25m |
| 2026-05-08 | TYA1091 | DME → KRO | May 8, 00:14 UTC | May 8, 22:45 UTC | 22h 30m |
| 2026-05-05 | TYA534 | TYN → KJA | May 5, 19:20 UTC | May 5, 23:20 UTC | 4h 0m |
| 2026-04-30 | TYA1091 | DME → KRO | Apr 30, 22:35 UTC | Apr 30, 22:50 UTC | 15m |
| 2026-04-28 | TYA1092 | KRO → DME | Apr 28, 00:00 UTC | Apr 28, 04:00 UTC | 4h 0m |
| 2026-04-24 | TYA534 | TYN → KJA | Apr 24, 22:55 UTC | Apr 25, 02:55 UTC | 4h 0m |
| 2026-04-17 | TYA1092 | KRO → DME | Apr 17, 03:20 UTC | Apr 17, 03:55 UTC | 35m |
| 2026-04-15 | TYA1091 | DME → KRO | Apr 15, 23:35 UTC | Apr 15, 23:55 UTC | 20m |
| 2026-04-15 | TYA1091 | DME → KRO | Apr 15, 22:35 UTC | Apr 15, 23:00 UTC | 25m |
| 2026-04-13 | TYA1091 | - | Apr 13, 23:05 UTC | Apr 13, 23:35 UTC | 30m |
| 2026-04-13 | TYA1092 | KRO → DME | Apr 13, 04:55 UTC | Apr 13, 06:15 UTC | 1h 20m |
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 RA-73259 page for operator, model, and routing details .