sensors Mode-S transponder
8004DD
ICAO 24-bit transponder address · allocated to India
Currently assigned to VT-ALO · BOEING 777-300ER
- Hex
- 8004DD
- Octal
- 40002335
- Decimal
- 8,389,853
- Country
- IN
- Tail
- VT-ALO
- Type
- B77W
- Flights observed
- 83
- Distinct callsigns
- 18
- Country
- IN
- Last broadcast
- 5d ago
Last known position
Country allocation
The ICAO 24-bit address 8004DD falls within the block assigned to India (IN) by ICAO Annex 10, Volume III. Every aircraft registered in India 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AIC4174 | Air India | 13 | 2026-05-19 |
| AIC127 | Air India | 13 | 2026-04-27 |
| AIC126 | Air India | 13 | 2026-04-27 |
| AIC185 | Air India | 10 | 2026-05-16 |
| AIC186 | Air India | 9 | 2026-05-16 |
| AIC173 | Air India | 5 | 2026-05-17 |
| AIC187 | Air India | 4 | 2026-05-22 |
| AIC538 | Air India | 3 | 2026-05-21 |
| AIC816 | Air India | 2 | 2026-04-16 |
| AIC188 | Air India | 2 | 2026-05-22 |
| AIC184 | Air India | 2 | 2026-04-22 |
| VTALO | - | 1 | 2026-05-06 |
| AIC441 | Air India | 1 | 2026-04-16 |
| AIC4025 | Air India | 1 | 2026-05-24 |
| AIC2026 | Air India | 1 | 2026-05-24 |
| AIC185D | Air India | 1 | 2026-04-23 |
| AIC183 | Air India | 1 | 2026-04-21 |
| AIC173D | Air India | 1 | 2026-05-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-24 | AIC2026 | FRA → DEL | May 24, 14:00 UTC | May 24, 21:50 UTC | 7h 50m |
| 2026-05-24 | AIC4025 | DEL → DXB | May 24, 02:00 UTC | May 24, 11:50 UTC | 9h 50m |
| 2026-05-22 | AIC188 | YYZ → DEL | May 22, 20:30 UTC | May 23, 12:00 UTC | 15h 30m |
| 2026-05-22 | AIC187 | DEL → YYZ | May 22, 08:25 UTC | May 22, 16:55 UTC | 8h 30m |
| 2026-05-21 | AIC187 | DEL → YYZ | May 21, 21:45 UTC | May 22, 06:50 UTC | 9h 5m |
| 2026-05-21 | AIC538 | BBI → MAA | May 21, 11:40 UTC | May 21, 17:50 UTC | 6h 10m |
| 2026-05-19 | AIC4174 | SFO → CCU | May 19, 12:30 UTC | May 19, 14:15 UTC | 1h 45m |
| 2026-05-18 | AIC4174 | SFO → CCU | May 18, 23:10 UTC | May 19, 10:15 UTC | 11h 5m |
| 2026-05-18 | AIC4174 | SFO → CCU | May 18, 18:05 UTC | May 18, 23:05 UTC | 4h 59m |
| 2026-05-17 | AIC173 | DEL → SFO | May 17, 22:01 UTC | May 18, 13:30 UTC | 15h 30m |
| 2026-05-16 | AIC186 | YVR → DEL | May 16, 17:40 UTC | May 17, 09:55 UTC | 16h 15m |
| 2026-05-16 | AIC185 | DEL → YVR | May 16, 00:00 UTC | May 16, 14:55 UTC | 14h 56m |
| 2026-05-15 | AIC4174 | SFO → CCU | May 15, 13:20 UTC | May 15, 15:15 UTC | 1h 54m |
| 2026-05-14 | AIC4174 | SFO → CCU | May 14, 18:55 UTC | May 15, 11:35 UTC | 16h 40m |
| 2026-05-14 | AIC173 | DEL → SFO | May 14, 00:10 UTC | May 14, 15:35 UTC | 15h 25m |
| 2026-05-13 | AIC4174 | SFO → CCU | May 13, 12:10 UTC | May 13, 14:30 UTC | 2h 20m |
| 2026-05-12 | AIC4174 | SFO → CCU | May 12, 18:45 UTC | May 13, 10:50 UTC | 16h 5m |
| 2026-05-12 | AIC173 | DEL → SFO | May 12, 04:10 UTC | May 12, 13:51 UTC | 9h 40m |
| 2026-05-10 | AIC4174 | SFO → CCU | May 10, 19:09 UTC | May 10, 21:25 UTC | 2h 15m |
| 2026-05-10 | AIC4174 | SFO → CCU | May 10, 00:49 UTC | May 10, 17:25 UTC | 16h 35m |
| 2026-05-09 | AIC173D | DEL → SFO | May 9, 06:20 UTC | May 9, 21:30 UTC | 15h 10m |
| 2026-05-08 | AIC538 | BBI → MAA | May 8, 13:00 UTC | May 8, 19:20 UTC | 6h 20m |
| 2026-05-07 | AIC186 | YVR → DEL | May 7, 17:45 UTC | May 8, 10:44 UTC | 16h 59m |
| 2026-05-06 | AIC185 | DEL → YVR | May 6, 23:05 UTC | May 7, 13:55 UTC | 14h 50m |
| 2026-05-06 | VTALO | DEL → DEL | May 6, 01:40 UTC | May 6, 02:10 UTC | 30m |
| 2026-05-05 | AIC4174 | SFO → CCU | May 5, 12:05 UTC | May 5, 14:10 UTC | 2h 5m |
| 2026-05-04 | AIC4174 | SFO → CCU | May 4, 17:50 UTC | May 5, 09:35 UTC | 15h 46m |
| 2026-05-03 | AIC173 | DEL → SFO | May 3, 22:05 UTC | May 4, 13:45 UTC | 15h 40m |
| 2026-05-03 | AIC538 | BBI → MAA | May 3, 11:30 UTC | May 3, 18:45 UTC | 7h 15m |
| 2026-05-01 | AIC188 | YYZ → DEL | May 1, 18:35 UTC | May 2, 10:35 UTC | 16h 1m |
| 2026-05-01 | AIC187 | DEL → YYZ | May 1, 06:15 UTC | May 1, 14:40 UTC | 8h 25m |
| 2026-04-30 | AIC187 | DEL → YYZ | Apr 30, 19:20 UTC | May 1, 04:40 UTC | 9h 20m |
| 2026-04-30 | AIC4174 | SFO → CCU | Apr 30, 11:40 UTC | Apr 30, 13:50 UTC | 2h 10m |
| 2026-04-29 | AIC4174 | SFO → CCU | Apr 29, 17:50 UTC | Apr 30, 09:30 UTC | 15h 39m |
| 2026-04-28 | AIC173 | DEL → SFO | Apr 28, 22:20 UTC | Apr 29, 13:35 UTC | 15h 16m |
| 2026-04-27 | AIC126 | ORD → DEL | Apr 27, 20:10 UTC | Apr 28, 12:45 UTC | 16h 35m |
| 2026-04-27 | AIC127 | DEL → ORD | Apr 27, 07:25 UTC | Apr 27, 16:50 UTC | 9h 25m |
| 2026-04-26 | AIC127 | DEL → ORD | Apr 26, 20:20 UTC | Apr 27, 05:45 UTC | 9h 25m |
| 2026-04-25 | AIC186 | YVR → DEL | Apr 25, 17:40 UTC | Apr 26, 09:40 UTC | 16h 0m |
| 2026-04-24 | AIC185 | DEL → YVR | Apr 24, 23:15 UTC | Apr 25, 14:05 UTC | 14h 50m |
| 2026-04-23 | AIC186 | YVR → DEL | Apr 23, 19:05 UTC | Apr 24, 11:05 UTC | 16h 0m |
| 2026-04-23 | AIC185D | DEL → YVR | Apr 23, 01:25 UTC | Apr 23, 16:15 UTC | 14h 50m |
| 2026-04-22 | AIC184 | SFO → DEL | Apr 22, 20:10 UTC | Apr 22, 22:05 UTC | 1h 55m |
| 2026-04-22 | AIC184 | SFO → DEL | Apr 22, 02:00 UTC | Apr 22, 18:35 UTC | 16h 35m |
| 2026-04-21 | AIC183 | DEL → SFO | Apr 21, 05:45 UTC | Apr 21, 21:20 UTC | 15h 35m |
| 2026-04-19 | AIC186 | YVR → DEL | Apr 19, 17:35 UTC | Apr 20, 10:10 UTC | 16h 35m |
| 2026-04-18 | AIC185 | DEL → YVR | Apr 18, 23:20 UTC | Apr 19, 14:15 UTC | 14h 55m |
| 2026-04-18 | AIC126 | ORD → DEL | Apr 18, 05:25 UTC | Apr 18, 06:55 UTC | 1h 30m |
| 2026-04-18 | AIC126 | ORD → DEL | Apr 18, 04:45 UTC | Apr 18, 06:40 UTC | 1h 55m |
| 2026-04-18 | AIC126 | ORD → DEL | Apr 18, 03:25 UTC | Apr 18, 05:20 UTC | 1h 55m |
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 VT-ALO page for operator, model, and routing details .