sensors Mode-S transponder
8004DF
ICAO 24-bit transponder address · allocated to India
Currently assigned to VT-ALQ · BOEING 777-300ER
- Hex
- 8004DF
- Octal
- 40002337
- Decimal
- 8,389,855
- Country
- IN
- Tail
- VT-ALQ
- Type
- B77W
- Flights observed
- 83
- Distinct callsigns
- 15
- Country
- IN
- Last broadcast
- 10h ago
Last known position
Country allocation
The ICAO 24-bit address 8004DF 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AIC186 | Air India | 17 | 2026-05-17 |
| AIC174 | Air India | 11 | 2026-04-23 |
| AIC173 | Air India | 11 | 2026-05-28 |
| AIC187 | Air India | 10 | 2026-05-25 |
| AIC185 | Air India | 10 | 2026-05-16 |
| AIC188 | Air India | 6 | 2026-05-26 |
| AIC127 | Air India | 6 | 2026-05-27 |
| AIC126 | Air India | 3 | 2026-05-27 |
| AIC538 | Air India | 2 | 2026-05-09 |
| AIC4174 | Air India | 2 | 2026-05-01 |
| AIC537 | Air India | 1 | 2026-05-09 |
| AIC2975 | Air India | 1 | 2026-05-16 |
| AIC2430 | Air India | 1 | 2026-05-16 |
| AIC2026 | Air India | 1 | 2026-05-13 |
| AIC2025 | Air India | 1 | 2026-05-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | AIC173 | DEL → SFO | May 28, 22:40 UTC | May 29, 14:30 UTC | 15h 50m |
| 2026-05-27 | AIC126 | ORD → DEL | May 27, 19:00 UTC | May 28, 11:45 UTC | 16h 45m |
| 2026-05-27 | AIC127 | DEL → ORD | May 27, 07:00 UTC | May 27, 16:20 UTC | 9h 20m |
| 2026-05-26 | AIC127 | DEL → ORD | May 26, 20:05 UTC | May 27, 05:04 UTC | 9h 0m |
| 2026-05-26 | AIC188 | YYZ → DEL | May 26, 00:19 UTC | May 26, 10:39 UTC | 10h 20m |
| 2026-05-25 | AIC188 | YYZ → DEL | May 25, 18:50 UTC | May 25, 20:15 UTC | 1h 24m |
| 2026-05-25 | AIC187 | DEL → YYZ | May 25, 06:30 UTC | May 25, 15:20 UTC | 8h 50m |
| 2026-05-24 | AIC187 | DEL → YYZ | May 24, 19:35 UTC | May 25, 04:35 UTC | 9h 0m |
| 2026-05-23 | AIC188 | YYZ → DEL | May 23, 18:30 UTC | May 24, 10:05 UTC | 15h 35m |
| 2026-05-23 | AIC187 | DEL → YYZ | May 23, 06:30 UTC | May 23, 15:10 UTC | 8h 40m |
| 2026-05-22 | AIC187 | DEL → YYZ | May 22, 19:15 UTC | May 23, 04:30 UTC | 9h 14m |
| 2026-05-20 | AIC188 | YYZ → DEL | May 20, 19:40 UTC | May 21, 10:45 UTC | 15h 5m |
| 2026-05-20 | AIC187 | DEL → YYZ | May 20, 06:40 UTC | May 20, 15:30 UTC | 8h 50m |
| 2026-05-19 | AIC187 | DEL → YYZ | May 19, 19:35 UTC | May 20, 04:50 UTC | 9h 16m |
| 2026-05-17 | AIC186 | YVR → DEL | May 17, 17:15 UTC | May 18, 09:20 UTC | 16h 5m |
| 2026-05-16 | AIC185 | DEL → YVR | May 16, 23:05 UTC | May 17, 14:01 UTC | 14h 55m |
| 2026-05-16 | AIC2430 | BOM → DEL | May 16, 06:41 UTC | May 16, 08:16 UTC | 1h 35m |
| 2026-05-16 | AIC2975 | DEL → BOM | May 16, 02:50 UTC | May 16, 04:30 UTC | 1h 40m |
| 2026-05-14 | AIC186 | YVR → DEL | May 14, 19:30 UTC | May 15, 12:00 UTC | 16h 30m |
| 2026-05-14 | AIC185 | DEL → YVR | May 14, 01:15 UTC | May 14, 16:00 UTC | 14h 45m |
| 2026-05-13 | AIC2026 | FRA → DEL | May 13, 13:31 UTC | May 13, 22:10 UTC | 8h 40m |
| 2026-05-12 | AIC2025 | DEL → FRA | May 12, 23:40 UTC | May 13, 10:00 UTC | 10h 20m |
| 2026-05-10 | AIC186 | YVR → DEL | May 10, 17:15 UTC | May 11, 09:50 UTC | 16h 35m |
| 2026-05-09 | AIC185 | DEL → YVR | May 9, 22:49 UTC | May 10, 12:59 UTC | 14h 10m |
| 2026-05-09 | AIC538 | BBI → MAA | May 9, 16:50 UTC | May 9, 19:19 UTC | 2h 30m |
| 2026-05-09 | AIC537 | MAA → BBI | May 9, 12:35 UTC | May 9, 13:05 UTC | 30m |
| 2026-05-08 | AIC186 | YVR → DEL | May 8, 17:30 UTC | May 9, 10:10 UTC | 16h 40m |
| 2026-05-07 | AIC185 | DEL → YVR | May 7, 23:14 UTC | May 8, 14:00 UTC | 14h 45m |
| 2026-05-06 | AIC126 | ORD → DEL | May 6, 20:45 UTC | May 7, 13:25 UTC | 16h 40m |
| 2026-05-06 | AIC127 | DEL → ORD | May 6, 08:25 UTC | May 6, 18:00 UTC | 9h 34m |
| 2026-05-05 | AIC127 | DEL → ORD | May 5, 21:20 UTC | May 6, 06:45 UTC | 9h 25m |
| 2026-05-05 | AIC538 | BBI → MAA | May 5, 11:55 UTC | May 5, 18:40 UTC | 6h 45m |
| 2026-05-02 | AIC188 | YYZ → DEL | May 2, 18:55 UTC | May 3, 10:45 UTC | 15h 49m |
| 2026-05-02 | AIC187 | DEL → YYZ | May 2, 06:25 UTC | May 2, 14:50 UTC | 8h 25m |
| 2026-05-01 | AIC187 | DEL → YYZ | May 1, 19:10 UTC | May 2, 04:35 UTC | 9h 26m |
| 2026-05-01 | AIC4174 | SFO → CCU | May 1, 13:40 UTC | May 1, 15:45 UTC | 2h 5m |
| 2026-04-30 | AIC4174 | SFO → CCU | Apr 30, 20:05 UTC | May 1, 12:05 UTC | 16h 0m |
| 2026-04-29 | AIC173 | DEL → SFO | Apr 29, 21:45 UTC | Apr 30, 12:55 UTC | 15h 10m |
| 2026-04-28 | AIC186 | YVR → DEL | Apr 28, 17:45 UTC | Apr 29, 10:20 UTC | 16h 35m |
| 2026-04-27 | AIC185 | DEL → YVR | Apr 27, 23:10 UTC | Apr 28, 13:55 UTC | 14h 45m |
| 2026-04-26 | AIC188 | YYZ → DEL | Apr 26, 19:05 UTC | Apr 27, 10:50 UTC | 15h 45m |
| 2026-04-26 | AIC187 | DEL → YYZ | Apr 26, 06:20 UTC | Apr 26, 14:45 UTC | 8h 25m |
| 2026-04-25 | AIC187 | DEL → YYZ | Apr 25, 19:20 UTC | Apr 26, 04:45 UTC | 9h 25m |
| 2026-04-24 | AIC186 | YVR → DEL | Apr 24, 17:40 UTC | Apr 25, 10:00 UTC | 16h 20m |
| 2026-04-23 | AIC185 | DEL → YVR | Apr 23, 23:00 UTC | Apr 24, 13:40 UTC | 14h 40m |
| 2026-04-23 | AIC174 | SFO → DEL | Apr 23, 07:50 UTC | Apr 23, 15:55 UTC | 8h 5m |
| 2026-04-22 | AIC174 | SFO → DEL | Apr 22, 17:40 UTC | Apr 23, 05:35 UTC | 11h 55m |
| 2026-04-21 | AIC173 | DEL → SFO | Apr 21, 22:00 UTC | Apr 22, 13:20 UTC | 15h 20m |
| 2026-04-20 | AIC126 | ORD → DEL | Apr 20, 20:45 UTC | Apr 21, 13:30 UTC | 16h 45m |
| 2026-04-20 | AIC127 | DEL → ORD | Apr 20, 08:30 UTC | Apr 20, 17:35 UTC | 9h 5m |
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-ALQ page for operator, model, and routing details .