sensors Mode-S transponder
ABDAA4
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N863GT · BOEING 747-8 · operated by WILMINGTON TRUST CO TRUSTEE
- Hex
- ABDAA4
- Octal
- 52755244
- Decimal
- 11,262,628
- Country
- US
- Tail
- N863GT
- Type
- B748
- Flights observed
- 202
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address ABDAA4 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 |
|---|---|---|---|
| GTI8975 | - | 29 | 2026-07-08 |
| GTI8991 | - | 27 | 2026-07-09 |
| GTI8971 | - | 22 | 2026-07-09 |
| GTI8992 | - | 15 | 2026-07-05 |
| GTI8996 | - | 7 | 2026-06-28 |
| GTI8701 | Atlas Air | 6 | 2026-05-16 |
| GTI8995 | - | 5 | 2026-06-27 |
| GTI8994 | - | 5 | 2026-06-25 |
| GTI8676 | Atlas Air | 5 | 2026-06-05 |
| GTI8993 | - | 4 | 2026-07-13 |
| GTI8702 | Atlas Air | 4 | 2026-05-16 |
| GTI8052 | Atlas Air | 4 | 2026-05-24 |
| GTI8050 | Atlas Air | 4 | 2026-05-20 |
| GTI8318 | - | 3 | 2026-06-22 |
| GTI8229 | Atlas Air | 3 | 2026-06-07 |
| GTI8028 | Atlas Air | 3 | 2026-06-10 |
| GTI5561 | Atlas Air | 3 | 2026-06-04 |
| GTI238 | Atlas Air | 3 | 2026-06-08 |
| GTI9496 | - | 2 | 2026-05-26 |
| GTI8986 | - | 2 | 2026-07-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | GTI8993 | - | Jul 13, 23:10 UTC | Jul 14, 09:00 UTC | 9h 50m |
| 2026-07-13 | GTI8255 | - | Jul 13, 14:55 UTC | Jul 13, 19:30 UTC | 4h 35m |
| 2026-07-12 | GTI8255 | ICN → ANC | Jul 12, 21:55 UTC | Jul 13, 12:10 UTC | 14h 15m |
| 2026-07-12 | GTI8983 | - | Jul 12, 03:01 UTC | Jul 12, 18:20 UTC | 15h 20m |
| 2026-07-11 | GTI8986 | ANC → MIA | Jul 11, 15:55 UTC | Jul 11, 23:25 UTC | 7h 30m |
| 2026-07-11 | GTI8986 | - | Jul 11, 05:50 UTC | Jul 11, 13:15 UTC | 7h 25m |
| 2026-07-10 | GTI9852 | - | Jul 10, 22:10 UTC | Jul 11, 00:10 UTC | 2h 0m |
| 2026-07-09 | GTI8991 | DFW → ICN | Jul 9, 15:35 UTC | Jul 10, 05:15 UTC | 13h 40m |
| 2026-07-09 | GTI8971 | - | Jul 9, 01:35 UTC | Jul 9, 07:10 UTC | 5h 35m |
| 2026-07-08 | GTI8971 | - | Jul 8, 15:55 UTC | Jul 8, 23:40 UTC | 7h 45m |
| 2026-07-08 | GTI8971 | - | Jul 8, 14:35 UTC | Jul 8, 14:45 UTC | 10m |
| 2026-07-08 | GTI8975 | - | Jul 8, 10:30 UTC | Jul 8, 11:35 UTC | 1h 5m |
| 2026-07-08 | GTI8975 | - | Jul 8, 02:10 UTC | Jul 8, 02:30 UTC | 20m |
| 2026-07-07 | GTI8975 | - | Jul 7, 21:05 UTC | Jul 7, 23:30 UTC | 2h 25m |
| 2026-07-07 | GTI8975 | DFW → ICN | Jul 7, 05:20 UTC | Jul 7, 18:15 UTC | 12h 55m |
| 2026-07-05 | GTI8992 | ANC → DFW | Jul 5, 00:55 UTC | Jul 5, 06:20 UTC | 5h 25m |
| 2026-07-04 | GTI8992 | - | Jul 4, 15:05 UTC | Jul 4, 22:10 UTC | 7h 5m |
| 2026-07-04 | GTI8992 | - | Jul 4, 13:40 UTC | Jul 4, 13:55 UTC | 15m |
| 2026-07-04 | GTI8991 | - | Jul 4, 09:20 UTC | Jul 4, 10:35 UTC | 1h 15m |
| 2026-07-04 | GTI8991 | - | Jul 4, 02:55 UTC | Jul 4, 03:05 UTC | 10m |
| 2026-07-03 | GTI8991 | - | Jul 3, 21:10 UTC | Jul 4, 01:50 UTC | 4h 40m |
| 2026-07-03 | GTI8991 | DFW → ICN | Jul 3, 05:00 UTC | Jul 3, 19:30 UTC | 14h 30m |
| 2026-07-02 | GTI8971 | - | Jul 2, 21:10 UTC | Jul 2, 23:35 UTC | 2h 25m |
| 2026-07-02 | GTI8971 | - | Jul 2, 13:35 UTC | Jul 2, 17:55 UTC | 4h 20m |
| 2026-07-02 | GTI8971 | - | Jul 2, 03:35 UTC | Jul 2, 10:25 UTC | 6h 50m |
| 2026-07-02 | GTI8971 | - | Jul 2, 02:05 UTC | Jul 2, 02:25 UTC | 20m |
| 2026-07-01 | GTI8975 | - | Jul 1, 19:55 UTC | Jul 1, 21:05 UTC | 1h 10m |
| 2026-07-01 | GTI8972 | - | Jul 1, 07:20 UTC | Jul 1, 12:55 UTC | 5h 35m |
| 2026-06-29 | GTI8975 | ORD → ICN | Jun 29, 01:44 UTC | Jun 29, 14:54 UTC | 13h 10m |
| 2026-06-28 | GTI8996 | ANC → ORD | Jun 28, 14:30 UTC | Jun 28, 20:04 UTC | 5h 35m |
| 2026-06-28 | GTI8996 | - | Jun 28, 05:49 UTC | Jun 28, 12:35 UTC | 6h 45m |
| 2026-06-28 | GTI8996 | - | Jun 28, 04:20 UTC | Jun 28, 04:40 UTC | 20m |
| 2026-06-27 | GTI8995 | - | Jun 27, 22:55 UTC | Jun 27, 23:19 UTC | 25m |
| 2026-06-27 | GTI8995 | - | Jun 27, 21:10 UTC | Jun 27, 21:55 UTC | 45m |
| 2026-06-26 | GTI8995 | ORD → ICN | Jun 26, 04:10 UTC | Jun 26, 17:40 UTC | 13h 30m |
| 2026-06-25 | GTI8994 | ANC → ORD | Jun 25, 18:45 UTC | Jun 26, 00:15 UTC | 5h 30m |
| 2026-06-25 | GTI8994 | TPE → ANC | Jun 25, 08:20 UTC | Jun 25, 16:59 UTC | 8h 40m |
| 2026-06-25 | GTI8993 | ICN → TPE | Jun 25, 02:25 UTC | Jun 25, 04:35 UTC | 2h 10m |
| 2026-06-23 | GTI8993 | DFW → ICN | Jun 23, 15:15 UTC | Jun 24, 05:09 UTC | 13h 55m |
| 2026-06-22 | GTI8318 | ANC → DFW | Jun 22, 22:05 UTC | Jun 23, 12:20 UTC | 14h 15m |
| 2026-06-22 | GTI8318 | - | Jun 22, 12:05 UTC | Jun 22, 19:24 UTC | 7h 20m |
| 2026-06-22 | GTI8318 | - | Jun 22, 10:34 UTC | Jun 22, 10:55 UTC | 20m |
| 2026-06-22 | GTI8317 | DOV → ICN | Jun 22, 05:34 UTC | Jun 22, 07:40 UTC | 2h 5m |
| 2026-06-21 | GTI8317 | DOV → ICN | Jun 21, 11:05 UTC | Jun 22, 00:50 UTC | 13h 45m |
| 2026-06-21 | GTI8992 | ANC → SDF | Jun 21, 02:50 UTC | Jun 21, 08:10 UTC | 5h 20m |
| 2026-06-20 | GTI8992 | ANC → SDF | Jun 20, 17:39 UTC | Jun 21, 00:49 UTC | 7h 10m |
| 2026-06-20 | GTI8992 | ANC → SDF | Jun 20, 16:09 UTC | Jun 20, 16:29 UTC | 20m |
| 2026-06-20 | GTI8991 | - | Jun 20, 10:25 UTC | Jun 20, 11:49 UTC | 1h 25m |
| 2026-06-20 | GTI8991 | - | Jun 20, 07:39 UTC | Jun 20, 07:49 UTC | 10m |
| 2026-06-19 | GTI8991 | - | Jun 19, 19:54 UTC | Jun 20, 01:29 UTC | 5h 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 N863GT page for operator, model, and routing details .