sensors Mode-S transponder
A35AFF
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N315SL · BOEING 737-800 · operated by CANCELLED/NOT ASSIGNED
- Hex
- A35AFF
- Octal
- 50655377
- Decimal
- 10,705,663
- Country
- US
- Tail
- N315SL
- Type
- B738
- Flights observed
- 81
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address A35AFF falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 |
|---|---|---|---|
| ETH3644 | - | 11 | 2026-07-11 |
| ETH3693 | - | 10 | 2026-07-17 |
| ETH3631 | - | 8 | 2026-07-15 |
| ETH3692 | - | 6 | 2026-06-19 |
| ETH3645 | - | 6 | 2026-07-09 |
| ETH3632 | - | 6 | 2026-07-16 |
| ETH3415 | - | 4 | 2026-06-29 |
| ETH3414 | - | 4 | 2026-06-29 |
| ETH3917 | - | 3 | 2026-07-15 |
| ETH3432 | - | 3 | 2026-06-26 |
| ETH3905 | - | 2 | 2026-07-06 |
| ETH3694 | - | 2 | 2026-07-13 |
| ETH3610 | Ethiopian Airlines | 2 | 2026-06-22 |
| ETH3603 | - | 2 | 2026-06-24 |
| ETH3433 | Ethiopian Airlines | 2 | 2026-06-26 |
| ETH3914 | - | 1 | 2026-07-04 |
| ETH3907 | - | 1 | 2026-04-18 |
| ETH3893 | - | 1 | 2026-06-03 |
| ETH3859 | - | 1 | 2026-04-24 |
| ETH3848 | Ethiopian Airlines | 1 | 2026-04-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | ETH3693 | - | Jul 17, 07:50 UTC | Jul 17, 08:15 UTC | 25m |
| 2026-07-16 | ETH3632 | - | Jul 16, 16:30 UTC | Jul 17, 05:55 UTC | 13h 25m |
| 2026-07-15 | ETH3631 | - | Jul 15, 21:15 UTC | Jul 16, 14:55 UTC | 17h 40m |
| 2026-07-15 | ETH3917 | - | Jul 15, 07:50 UTC | Jul 16, 03:45 UTC | 19h 55m |
| 2026-07-15 | ETH3917 | - | Jul 15, 07:25 UTC | Jul 16, 03:45 UTC | 20h 20m |
| 2026-07-15 | ETH3631 | - | Jul 15, 04:50 UTC | Jul 15, 06:00 UTC | 1h 10m |
| 2026-07-13 | ETH3694 | - | Jul 13, 02:05 UTC | Jul 13, 06:35 UTC | 4h 30m |
| 2026-07-12 | ETH3693 | - | Jul 12, 06:55 UTC | Jul 12, 07:20 UTC | 25m |
| 2026-07-11 | ETH3644 | - | Jul 11, 12:55 UTC | Jul 12, 04:40 UTC | 15h 45m |
| 2026-07-10 | ETH3644 | - | Jul 10, 22:45 UTC | Jul 11, 16:50 UTC | 18h 5m |
| 2026-07-10 | ETH3644 | - | Jul 10, 16:40 UTC | Jul 11, 13:45 UTC | 21h 5m |
| 2026-07-09 | ETH3645 | - | Jul 9, 20:05 UTC | Jul 10, 17:10 UTC | 21h 5m |
| 2026-07-09 | ETH3644 | - | Jul 9, 06:15 UTC | Jul 9, 17:05 UTC | 10h 50m |
| 2026-07-06 | ETH3413 | - | Jul 6, 23:25 UTC | Jul 7, 00:15 UTC | 50m |
| 2026-07-06 | ETH3905 | - | Jul 6, 10:00 UTC | Jul 6, 10:20 UTC | 20m |
| 2026-07-04 | ETH3914 | - | Jul 4, 15:50 UTC | Jul 4, 22:25 UTC | 6h 35m |
| 2026-07-03 | ETH3917 | - | Jul 3, 17:50 UTC | Jul 4, 16:25 UTC | 22h 35m |
| 2026-07-03 | ETH3632 | - | Jul 3, 17:35 UTC | Jul 3, 18:10 UTC | 35m |
| 2026-06-29 | ETH3415 | - | Jun 29, 20:30 UTC | Jun 29, 20:49 UTC | 20m |
| 2026-06-29 | ETH3414 | - | Jun 29, 17:49 UTC | Jun 29, 18:19 UTC | 30m |
| 2026-06-28 | ETH3694 | - | Jun 28, 19:29 UTC | Jun 29, 00:00 UTC | 4h 30m |
| 2026-06-26 | ETH3433 | BLR → ADD | Jun 26, 22:10 UTC | Jun 26, 22:34 UTC | 25m |
| 2026-06-26 | ETH3432 | - | Jun 26, 20:00 UTC | Jun 26, 20:24 UTC | 25m |
| 2026-06-25 | ETH3693 | - | Jun 25, 19:34 UTC | Jun 25, 19:59 UTC | 25m |
| 2026-06-24 | ETH3645 | - | Jun 24, 22:14 UTC | Jun 25, 17:39 UTC | 19h 25m |
| 2026-06-24 | ETH3644 | ADD → AMD | Jun 24, 19:29 UTC | Jun 24, 20:09 UTC | 40m |
| 2026-06-24 | ETH3603 | - | Jun 24, 03:35 UTC | Jun 24, 04:00 UTC | 25m |
| 2026-06-23 | ETH3602 | - | Jun 23, 15:40 UTC | Jun 24, 02:09 UTC | 10h 30m |
| 2026-06-22 | ETH3610 | ADD → BOM | Jun 22, 22:05 UTC | Jun 23, 13:50 UTC | 15h 45m |
| 2026-06-22 | ETH3415 | TLV → ADD | Jun 22, 09:10 UTC | Jun 22, 20:10 UTC | 11h 0m |
| 2026-06-21 | ETH3414 | ADD → TLV | Jun 21, 20:14 UTC | Jun 22, 07:30 UTC | 11h 15m |
| 2026-06-20 | ETH3693 | - | Jun 20, 02:04 UTC | Jun 20, 02:29 UTC | 25m |
| 2026-06-19 | ETH3692 | - | Jun 19, 23:44 UTC | Jun 20, 00:14 UTC | 30m |
| 2026-06-18 | ETH3645 | - | Jun 18, 02:40 UTC | Jun 18, 03:25 UTC | 45m |
| 2026-06-18 | ETH3644 | ADD → AMD | Jun 18, 00:10 UTC | Jun 18, 00:55 UTC | 45m |
| 2026-06-15 | ETH3632 | ADD → SHJ | Jun 15, 18:15 UTC | Jun 16, 02:34 UTC | 8h 20m |
| 2026-06-15 | ETH3631 | ADD → BOM | Jun 15, 15:35 UTC | Jun 15, 16:40 UTC | 1h 5m |
| 2026-06-14 | ETH3631 | ADD → BOM | Jun 14, 17:40 UTC | Jun 15, 15:45 UTC | 22h 5m |
| 2026-06-12 | ETH3645 | - | Jun 12, 11:50 UTC | Jun 12, 12:40 UTC | 50m |
| 2026-06-11 | ETH3644 | ADD → AMD | Jun 11, 18:45 UTC | Jun 12, 09:40 UTC | 14h 56m |
| 2026-06-09 | ETH3645 | - | Jun 9, 17:40 UTC | Jun 9, 18:30 UTC | 50m |
| 2026-06-09 | ETH3644 | ADD → AMD | Jun 9, 14:35 UTC | Jun 9, 15:15 UTC | 40m |
| 2026-06-08 | ETH3644 | ADD → AMD | Jun 8, 15:55 UTC | Jun 9, 15:15 UTC | 23h 20m |
| 2026-06-07 | ETH3610 | ADD → BOM | Jun 7, 22:00 UTC | Jun 8, 14:10 UTC | 16h 10m |
| 2026-06-04 | ETH3612 | ADD → DXB | Jun 4, 05:55 UTC | Jun 4, 06:20 UTC | 25m |
| 2026-06-03 | ETH3893 | - | Jun 3, 16:20 UTC | Jun 3, 22:45 UTC | 6h 25m |
| 2026-06-01 | ETH3415 | TLV → ADD | Jun 1, 08:50 UTC | Jun 1, 09:15 UTC | 25m |
| 2026-05-31 | ETH3414 | ADD → TLV | May 31, 19:30 UTC | Jun 1, 07:05 UTC | 11h 35m |
| 2026-05-30 | ETH3432 | - | May 30, 22:25 UTC | May 31, 17:30 UTC | 19h 5m |
| 2026-05-30 | ETH3905 | - | May 30, 20:40 UTC | May 30, 21:05 UTC | 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 N315SL page for operator, model, and routing details .