Apparatus

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sensors Mode-S transponder

8003E3

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-ALK · BOEING 777-300ER

Hex
8003E3
Octal
40001743
Decimal
8,389,603
Country
IN
Tail
VT-ALK
Type
B77W
No current signal · last broadcast 13d ago
Flights observed
54
Distinct callsigns
20
Country
IN
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 8003E3.

Country allocation

The ICAO 24-bit address 8003E3 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 20 distinct

Callsign Airline Flights Last seen
AIC4174 - 7 2026-07-15
AIC185 - 6 2026-07-19
AIC173 - 6 2026-07-13
AIC186 Air India 4 2026-07-20
AIC8EA - 2 2026-07-17
AIC5LR - 2 2026-07-16
AIC538 - 2 2026-07-07
AIC441 Air India 2 2026-06-26
AIC4218 - 2 2026-07-03
AIC4217 - 2 2026-07-03
AIC191 - 2 2026-06-27
AIC866 - 1 2026-07-04
AIC5EG - 1 2026-07-18
AIC537 - 1 2026-06-15
AIC4DM - 1 2026-07-21
AIC3105 Air India 1 2026-06-13
AIC3102 Air India 1 2026-06-19
AIC2CE - 1 2026-07-17
AIC2440 Air India 1 2026-06-25
AIC2026 Air India 1 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AIC187 DEL → YYZ Jul 26, 11:30 UTCJul 26, 20:00 UTC8h 30m
2026-07-26 AIC187D DEL → YYZ Jul 26, 00:55 UTCJul 26, 09:40 UTC8h 46m
2026-07-22 AIC2026 FRA → DEL Jul 22, 11:35 UTCJul 22, 21:05 UTC9h 30m
2026-07-21 AIC2025 DEL → FRA Jul 21, 22:50 UTCJul 22, 05:25 UTC6h 35m
2026-07-21 AIC4DM - Jul 21, 10:40 UTCJul 21, 17:15 UTC6h 35m
2026-07-20 AIC186 YVR → DEL Jul 20, 09:15 UTCJul 20, 09:40 UTC25m
2026-07-19 AIC186 YVR → DEL Jul 19, 18:00 UTCJul 20, 08:20 UTC14h 20m
2026-07-19 AIC185 CCU → YVR Jul 19, 00:35 UTCJul 19, 15:15 UTC14h 40m
2026-07-18 AIC185 - Jul 18, 20:30 UTCJul 18, 22:15 UTC1h 45m
2026-07-18 AIC5EG - Jul 18, 15:05 UTCJul 18, 16:45 UTC1h 40m
2026-07-17 AIC8EA - Jul 17, 19:09 UTCJul 17, 19:20 UTC10m
2026-07-17 AIC8EA - Jul 17, 17:50 UTCJul 17, 18:15 UTC25m
2026-07-17 AIC2CE - Jul 17, 13:55 UTCJul 17, 15:35 UTC1h 40m
2026-07-16 AIC5LR - Jul 16, 13:25 UTCJul 16, 13:45 UTC20m
2026-07-16 AIC5LR - Jul 16, 12:09 UTCJul 16, 12:40 UTC30m
2026-07-15 AIC4174 CCU → DEL Jul 15, 12:20 UTCJul 15, 14:00 UTC1h 40m
2026-07-14 AIC4174 SFO → CCU Jul 14, 19:05 UTCJul 15, 10:50 UTC15h 44m
2026-07-13 AIC173 CCU → SFO Jul 13, 23:50 UTCJul 14, 15:00 UTC15h 10m
2026-07-13 AIC173 DEL → CCU Jul 13, 19:30 UTCJul 13, 21:15 UTC1h 45m
2026-07-13 AIC4174 - Jul 13, 13:25 UTCJul 13, 13:50 UTC25m
2026-07-13 AIC4174 - Jul 13, 12:00 UTCJul 13, 12:45 UTC45m
2026-07-12 AIC4174 - Jul 12, 19:01 UTCJul 13, 10:35 UTC15h 35m
2026-07-11 AIC173 CCU → SFO Jul 11, 23:25 UTCJul 12, 14:40 UTC15h 15m
2026-07-11 AIC173 - Jul 11, 19:20 UTCJul 11, 21:10 UTC1h 50m
2026-07-10 AIC186 YVR → DEL Jul 10, 20:35 UTCJul 11, 12:30 UTC15h 55m
2026-07-10 AIC185 CCU → YVR Jul 10, 03:25 UTCJul 10, 17:45 UTC14h 20m
2026-07-09 AIC185 DEL → CCU Jul 9, 21:05 UTCJul 9, 22:50 UTC1h 45m
2026-07-08 AIC186 - Jul 8, 18:25 UTCJul 9, 10:10 UTC15h 45m
2026-07-08 AIC185 CCU → YVR Jul 8, 01:15 UTCJul 8, 15:15 UTC14h 0m
2026-07-07 AIC185 DEL → YVR Jul 7, 21:10 UTCJul 7, 22:50 UTC1h 40m
2026-07-07 AIC538 - Jul 7, 10:50 UTCJul 7, 17:10 UTC6h 20m
2026-07-06 AIC4174 CCU → DEL Jul 6, 12:40 UTCJul 6, 14:25 UTC1h 45m
2026-07-05 AIC4174 SFO → CCU Jul 5, 19:40 UTCJul 6, 11:00 UTC15h 20m
2026-07-04 AIC173 DEL → SFO Jul 4, 23:15 UTCJul 5, 13:45 UTC14h 30m
2026-07-04 AIC173 DEL → SFO Jul 4, 19:00 UTCJul 4, 20:50 UTC1h 50m
2026-07-04 AIC866 - Jul 4, 12:10 UTCJul 4, 12:30 UTC20m
2026-07-03 AIC4218 - Jul 3, 15:25 UTCJul 3, 18:05 UTC2h 40m
2026-07-03 AIC4217 - Jul 3, 10:55 UTCJul 3, 13:10 UTC2h 15m
2026-07-02 AIC128 LHR → BOM Jul 2, 13:25 UTCJul 2, 22:40 UTC9h 15m
2026-07-02 AIC163 - Jul 2, 00:45 UTCJul 2, 10:10 UTC9h 25m
2026-07-01 AIC4218 - Jul 1, 17:05 UTCJul 1, 19:55 UTC2h 50m
2026-07-01 AIC4217 - Jul 1, 12:30 UTCJul 1, 14:50 UTC2h 20m
2026-06-30 AIC130 - Jun 30, 20:40 UTCJul 1, 06:00 UTC9h 20m
2026-06-30 AIC131 - Jun 30, 08:25 UTCJun 30, 17:35 UTC9h 10m
2026-06-27 AIC144 EWR → BOM Jun 27, 15:45 UTCJun 28, 06:34 UTC14h 50m
2026-06-27 AIC191 FCO → EWR Jun 27, 02:25 UTCJun 27, 11:04 UTC8h 40m
2026-06-26 AIC191 - Jun 26, 16:05 UTCJun 26, 23:44 UTC7h 40m
2026-06-26 AIC441 DEL → BOM Jun 26, 13:10 UTCJun 26, 13:24 UTC15m
2026-06-26 AIC441 DEL → BOM Jun 26, 11:45 UTCJun 26, 12:14 UTC30m
2026-06-25 AIC2440 BOM → DEL Jun 25, 13:50 UTCJun 25, 15:24 UTC1h 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 VT-ALK page for operator, model, and routing details .

Mode-S 8003E3 frequently asked

What is Mode-S code 8003E3?
8003E3 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-ALK.
Where is Mode-S 8003E3 registered?
Mode-S code 8003E3 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8003E3 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8003E3, octal 40001743, decimal 8,389,603.
What flights does 8003E3 operate?
Mode-S 8003E3 has broadcast 20 distinct callsigns, including AIC4174, AIC185, AIC173, AIC186, AIC8EA.