sensors Mode-S transponder
73504A
ICAO 24-bit transponder address · allocated to Iran
Currently assigned to EP-TBJ · BOEING 737-400
- Hex
- 73504A
- Octal
- 34650112
- Decimal
- 7,557,194
- Country
- IR
- Tail
- EP-TBJ
- Type
- B734
- Flights observed
- 45
- Distinct callsigns
- 4
- Country
- IR
- Last broadcast
- 15d ago
Last known position
Country allocation
The ICAO 24-bit address 73504A falls within the block assigned to Iran (IR) by ICAO Annex 10, Volume III. Every aircraft registered in Iran 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 4 distinct
Recent flights last 45
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-12 | TBN7274 | - | Jul 12, 00:15 UTC | Jul 12, 01:15 UTC | 1h 0m |
| 2026-07-11 | TBN7273 | - | Jul 11, 04:50 UTC | Jul 11, 22:40 UTC | 17h 50m |
| 2026-07-11 | TBN7273 | - | Jul 11, 03:55 UTC | Jul 11, 22:40 UTC | 18h 45m |
| 2026-07-11 | TBN7273 | - | Jul 11, 00:35 UTC | Jul 11, 02:10 UTC | 1h 35m |
| 2026-07-09 | TBN7274 | - | Jul 9, 23:35 UTC | Jul 10, 00:40 UTC | 1h 5m |
| 2026-07-09 | TBN7273 | - | Jul 9, 20:15 UTC | Jul 9, 21:45 UTC | 1h 30m |
| 2026-07-08 | TBN7273 | - | Jul 8, 22:35 UTC | Jul 9, 21:45 UTC | 23h 10m |
| 2026-07-08 | TBN7274 | - | Jul 8, 22:00 UTC | Jul 9, 20:30 UTC | 22h 30m |
| 2026-07-08 | TBN7273 | - | Jul 8, 19:15 UTC | Jul 8, 20:45 UTC | 1h 30m |
| 2026-07-05 | TBN7274 | - | Jul 5, 01:45 UTC | Jul 5, 02:15 UTC | 30m |
| 2026-07-04 | TBN7273 | - | Jul 4, 22:20 UTC | Jul 4, 23:50 UTC | 1h 30m |
| 2026-07-03 | TBN7274 | - | Jul 3, 01:35 UTC | Jul 3, 02:40 UTC | 1h 5m |
| 2026-07-02 | TBN7273 | - | Jul 2, 22:25 UTC | Jul 2, 23:55 UTC | 1h 30m |
| 2026-07-01 | TBN7274 | - | Jul 1, 23:15 UTC | Jul 2, 22:30 UTC | 23h 15m |
| 2026-07-01 | TBN7273 | - | Jul 1, 19:45 UTC | Jul 1, 21:15 UTC | 1h 30m |
| 2026-06-30 | TBN7273 | - | Jun 30, 22:35 UTC | Jul 1, 21:15 UTC | 22h 40m |
| 2026-06-30 | TBN7274 | - | Jun 30, 22:10 UTC | Jul 1, 20:15 UTC | 22h 5m |
| 2026-06-30 | TBN7273 | - | Jun 30, 19:00 UTC | Jun 30, 20:25 UTC | 1h 25m |
| 2026-06-29 | TBN7273 | - | Jun 29, 20:44 UTC | Jun 30, 20:25 UTC | 23h 40m |
| 2026-06-29 | TBN7273 | - | Jun 29, 16:29 UTC | Jun 29, 17:59 UTC | 1h 30m |
| 2026-06-28 | TBN7273 | - | Jun 28, 20:54 UTC | Jun 29, 17:59 UTC | 21h 5m |
| 2026-06-28 | TBN7273 | - | Jun 28, 17:25 UTC | Jun 28, 18:55 UTC | 1h 30m |
| 2026-06-27 | TBN7273 | - | Jun 27, 20:34 UTC | Jun 28, 18:55 UTC | 22h 20m |
| 2026-06-27 | TBN7273 | - | Jun 27, 20:29 UTC | Jun 28, 18:29 UTC | 22h 0m |
| 2026-06-27 | TBN7273 | - | Jun 27, 16:30 UTC | Jun 27, 18:04 UTC | 1h 35m |
| 2026-06-26 | TBN7273 | - | Jun 26, 20:34 UTC | Jun 27, 18:04 UTC | 21h 30m |
| 2026-06-26 | TBN7273 | - | Jun 26, 17:15 UTC | Jun 26, 18:39 UTC | 1h 25m |
| 2026-06-25 | TBN7273 | - | Jun 25, 22:34 UTC | Jun 26, 18:39 UTC | 20h 5m |
| 2026-06-25 | TBN7273 | - | Jun 25, 22:14 UTC | Jun 26, 18:39 UTC | 20h 25m |
| 2026-06-25 | TBN7273 | - | Jun 25, 18:50 UTC | Jun 25, 20:09 UTC | 1h 20m |
| 2026-06-24 | TBN7273 | - | Jun 24, 21:24 UTC | Jun 25, 20:09 UTC | 22h 45m |
| 2026-06-24 | TBN7273 | - | Jun 24, 18:25 UTC | Jun 24, 19:49 UTC | 1h 25m |
| 2026-05-03 | TBN7220 | - | May 3, 08:35 UTC | May 3, 12:30 UTC | 3h 55m |
| 2026-05-01 | TBN7219 | - | May 1, 07:45 UTC | May 1, 11:30 UTC | 3h 45m |
| 2026-04-30 | TBN7220 | - | Apr 30, 10:00 UTC | May 1, 08:05 UTC | 22h 5m |
| 2026-04-30 | TBN7219 | - | Apr 30, 06:45 UTC | Apr 30, 10:20 UTC | 3h 35m |
| 2026-04-29 | TBN7220 | - | Apr 29, 11:55 UTC | Apr 30, 10:20 UTC | 22h 24m |
| 2026-04-29 | TBN7219 | - | Apr 29, 08:45 UTC | Apr 30, 07:05 UTC | 22h 20m |
| 2026-04-28 | TBN7220 | - | Apr 28, 12:35 UTC | Apr 29, 12:10 UTC | 23h 36m |
| 2026-04-28 | TBN7219 | - | Apr 28, 12:25 UTC | Apr 29, 09:00 UTC | 20h 36m |
| 2026-04-28 | TBN7219 | - | Apr 28, 08:45 UTC | Apr 28, 12:40 UTC | 3h 55m |
| 2026-04-27 | TBN7220 | - | Apr 27, 11:15 UTC | Apr 28, 09:00 UTC | 21h 45m |
| 2026-04-27 | TBN7220 | - | Apr 27, 07:55 UTC | Apr 27, 11:40 UTC | 3h 45m |
| 2026-04-26 | TBN7220 | - | Apr 26, 11:35 UTC | Apr 27, 08:10 UTC | 20h 35m |
| 2026-04-26 | TBN7220 | - | Apr 26, 07:30 UTC | Apr 26, 11:55 UTC | 4h 25m |
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 EP-TBJ page for operator, model, and routing details .