sensors Mode-S transponder
E840AC
ICAO 24-bit transponder address · allocated to Ecuador
Currently assigned to HC-CXU
- Hex
- E840AC
- Octal
- 72040254
- Decimal
- 15,220,908
- Country
- EC
- Tail
- HC-CXU
- Type
- B734
- Flights observed
- 63
- Distinct callsigns
- 14
- Country
- EC
- Last broadcast
- Jul 19, 21:40 UTC
Last known position
Country allocation
The ICAO 24-bit address E840AC falls within the block assigned to Ecuador (EC) by ICAO Annex 10, Volume III. Every aircraft registered in Ecuador 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| RER9711 | - | 15 | 2026-07-14 |
| RER9510 | - | 13 | 2026-06-24 |
| RER9810 | - | 5 | 2026-06-19 |
| RER9710 | - | 5 | 2026-07-07 |
| RER9910 | - | 4 | 2026-07-19 |
| RER9513 | - | 4 | 2026-07-15 |
| RER9511 | - | 4 | 2026-06-24 |
| RER9715 | - | 3 | 2026-04-28 |
| RER9512 | - | 3 | 2026-07-15 |
| RER9911 | - | 2 | 2026-07-18 |
| RER9811 | - | 2 | 2026-06-16 |
| RER9712 | - | 1 | 2026-04-15 |
| RER9611 | - | 1 | 2026-05-03 |
| RER9610 | - | 1 | 2026-05-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | RER9910 | - | Jul 19, 20:55 UTC | Jul 19, 21:40 UTC | 45m |
| 2026-07-18 | RER9911 | - | Jul 18, 19:55 UTC | Jul 18, 20:45 UTC | 50m |
| 2026-07-15 | RER9512 | - | Jul 15, 15:40 UTC | Jul 16, 00:35 UTC | 8h 55m |
| 2026-07-15 | RER9513 | - | Jul 15, 01:15 UTC | Jul 15, 13:45 UTC | 12h 30m |
| 2026-07-14 | RER9711 | - | Jul 14, 20:25 UTC | Jul 14, 20:50 UTC | 25m |
| 2026-07-07 | RER9710 | - | Jul 7, 18:50 UTC | Jul 8, 11:25 UTC | 16h 35m |
| 2026-06-24 | RER9510 | - | Jun 24, 12:54 UTC | Jun 24, 15:05 UTC | 2h 10m |
| 2026-06-24 | RER9511 | - | Jun 24, 09:15 UTC | Jun 24, 10:25 UTC | 1h 10m |
| 2026-06-20 | RER9510 | - | Jun 20, 12:30 UTC | Jun 20, 14:44 UTC | 2h 15m |
| 2026-06-19 | RER9511 | - | Jun 19, 18:05 UTC | Jun 20, 10:34 UTC | 16h 30m |
| 2026-06-19 | RER9511 | - | Jun 19, 13:14 UTC | Jun 20, 10:34 UTC | 21h 20m |
| 2026-06-19 | RER9810 | - | Jun 19, 03:39 UTC | Jun 19, 07:49 UTC | 4h 10m |
| 2026-06-16 | RER9811 | - | Jun 16, 19:30 UTC | Jun 16, 21:05 UTC | 1h 36m |
| 2026-06-15 | RER9811 | - | Jun 15, 21:25 UTC | Jun 15, 21:50 UTC | 25m |
| 2026-06-14 | RER9510 | - | Jun 14, 13:00 UTC | Jun 14, 20:15 UTC | 7h 15m |
| 2026-06-14 | RER9513 | - | Jun 14, 01:00 UTC | Jun 14, 11:20 UTC | 10h 21m |
| 2026-06-13 | RER9711 | - | Jun 13, 15:30 UTC | Jun 13, 20:40 UTC | 5h 10m |
| 2026-06-12 | RER9512 | - | Jun 12, 13:35 UTC | Jun 12, 15:30 UTC | 1h 55m |
| 2026-06-11 | RER9513 | - | Jun 11, 20:55 UTC | Jun 12, 11:45 UTC | 14h 50m |
| 2026-05-26 | RER9510 | - | May 26, 13:29 UTC | May 26, 21:49 UTC | 8h 20m |
| 2026-05-25 | RER9711 | - | May 25, 17:55 UTC | May 26, 11:44 UTC | 17h 50m |
| 2026-05-24 | RER9512 | - | May 24, 12:05 UTC | May 24, 13:50 UTC | 1h 45m |
| 2026-05-23 | RER9513 | - | May 23, 18:35 UTC | May 24, 09:55 UTC | 15h 20m |
| 2026-05-22 | RER9910 | - | May 22, 19:40 UTC | May 23, 19:00 UTC | 23h 20m |
| 2026-05-22 | RER9911 | - | May 22, 05:45 UTC | May 22, 09:35 UTC | 3h 50m |
| 2026-05-19 | RER9711 | - | May 19, 07:05 UTC | May 19, 21:10 UTC | 14h 5m |
| 2026-05-15 | RER9510 | - | May 15, 12:50 UTC | May 15, 21:00 UTC | 8h 10m |
| 2026-05-14 | RER9711 | - | May 14, 15:50 UTC | May 15, 09:55 UTC | 18h 5m |
| 2026-05-12 | RER9510 | - | May 12, 15:05 UTC | May 12, 16:55 UTC | 1h 50m |
| 2026-05-11 | RER9710 | - | May 11, 21:05 UTC | May 12, 12:30 UTC | 15h 25m |
| 2026-05-11 | RER9711 | - | May 11, 16:15 UTC | May 12, 12:30 UTC | 20h 16m |
| 2026-05-10 | RER9711 | - | May 10, 18:05 UTC | May 11, 17:00 UTC | 22h 56m |
| 2026-05-09 | RER9710 | - | May 9, 19:35 UTC | May 10, 12:54 UTC | 17h 20m |
| 2026-05-09 | RER9711 | - | May 9, 15:25 UTC | May 10, 12:54 UTC | 21h 30m |
| 2026-05-08 | RER9711 | - | May 8, 17:05 UTC | May 9, 16:15 UTC | 23h 10m |
| 2026-05-08 | RER9710 | - | May 8, 00:14 UTC | May 8, 17:20 UTC | 17h 5m |
| 2026-05-07 | RER9711 | - | May 7, 21:50 UTC | May 7, 22:15 UTC | 25m |
| 2026-05-05 | RER9510 | - | May 5, 14:45 UTC | May 5, 19:20 UTC | 4h 35m |
| 2026-05-04 | RER9710 | - | May 4, 20:45 UTC | May 5, 12:40 UTC | 15h 55m |
| 2026-05-03 | RER9610 | - | May 3, 15:45 UTC | May 3, 17:10 UTC | 1h 25m |
| 2026-05-03 | RER9611 | - | May 3, 13:05 UTC | May 3, 13:55 UTC | 50m |
| 2026-05-01 | RER9510 | - | May 1, 01:20 UTC | May 1, 22:55 UTC | 21h 35m |
| 2026-04-30 | RER9510 | - | Apr 30, 19:05 UTC | May 1, 18:05 UTC | 23h 0m |
| 2026-04-30 | RER9711 | - | Apr 30, 18:35 UTC | May 1, 16:25 UTC | 21h 50m |
| 2026-04-28 | RER9715 | - | Apr 28, 21:30 UTC | Apr 29, 11:20 UTC | 13h 51m |
| 2026-04-28 | RER9715 | - | Apr 28, 15:55 UTC | Apr 29, 11:20 UTC | 19h 26m |
| 2026-04-28 | RER9715 | - | Apr 28, 14:10 UTC | Apr 29, 11:20 UTC | 21h 10m |
| 2026-04-27 | RER9810 | - | Apr 27, 22:25 UTC | Apr 28, 12:20 UTC | 13h 55m |
| 2026-04-27 | RER9910 | - | Apr 27, 03:50 UTC | Apr 27, 22:45 UTC | 18h 55m |
| 2026-04-26 | RER9910 | - | Apr 26, 15:10 UTC | Apr 27, 05:00 UTC | 13h 50m |
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 HC-CXU page for operator, model, and routing details .