Apparatus

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sensors Mode-S transponder

8003C1

ICAO 24-bit transponder address · allocated to India

Currently assigned to CA-7081 · AIRBUS A-321

Hex
8003C1
Octal
40001701
Decimal
8,389,569
Country
IN
Tail
CA-7081
Type
A321
No current signal · last broadcast 1d ago
Flights observed
69
Distinct callsigns
6
Country
IN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 8003C1.

Country allocation

The ICAO 24-bit address 8003C1 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 6 distinct

Callsign Airline Flights Last seen
AF321 - 33 2026-06-23
AF321A - 16 2026-05-16
VUAUL - 12 2026-07-14
VUAUP - 5 2026-04-15
VUAUO - 2 2026-05-22
VUAUN - 1 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 VUAUL - Jul 14, 04:15 UTCJul 14, 04:35 UTC20m
2026-06-23 AF321 DEL → HDO Jun 23, 11:14 UTCJun 23, 14:55 UTC3h 40m
2026-06-23 AF321 - Jun 23, 06:24 UTCJun 23, 07:55 UTC1h 30m
2026-06-23 AF321 - Jun 23, 04:35 UTCJun 23, 04:50 UTC15m
2026-06-22 AF321 - Jun 22, 10:15 UTCJun 22, 11:35 UTC1h 20m
2026-06-22 AF321 - Jun 22, 08:10 UTCJun 22, 08:54 UTC45m
2026-06-22 VUAUN - Jun 22, 03:30 UTCJun 22, 04:04 UTC35m
2026-06-19 VUAUL HDO → DEL Jun 19, 08:04 UTCJun 19, 08:20 UTC15m
2026-06-06 AF321 BOS → CDG Jun 6, 12:10 UTCJun 6, 12:30 UTC20m
2026-06-06 AF321 BOS → CDG Jun 6, 09:19 UTCJun 6, 11:09 UTC1h 50m
2026-06-06 AF321 BOS → CDG Jun 6, 04:00 UTCJun 6, 06:00 UTC2h 0m
2026-06-05 AF321 BOS → CDG Jun 5, 09:25 UTCJun 5, 10:20 UTC55m
2026-06-05 AF321 BOS → CDG Jun 5, 03:45 UTCJun 5, 05:30 UTC1h 45m
2026-06-05 AF321 BOS → CDG Jun 5, 02:10 UTCJun 5, 02:25 UTC15m
2026-06-04 VUAUL - Jun 4, 05:10 UTCJun 4, 07:50 UTC2h 40m
2026-06-02 VUAUL - Jun 2, 14:10 UTCJun 2, 14:55 UTC45m
2026-06-02 VUAUL - Jun 2, 12:45 UTCJun 2, 13:10 UTC25m
2026-05-26 VUAUL - May 26, 05:59 UTCMay 26, 07:24 UTC1h 25m
2026-05-26 VUAUL - May 26, 04:15 UTCMay 26, 04:35 UTC20m
2026-05-22 VUAUO - May 22, 05:15 UTCMay 22, 07:35 UTC2h 20m
2026-05-22 VUAUO - May 22, 02:40 UTCMay 22, 03:20 UTC40m
2026-05-20 VUAUL - May 20, 11:40 UTCMay 20, 12:25 UTC45m
2026-05-20 VUAUL - May 20, 10:00 UTCMay 20, 10:35 UTC35m
2026-05-16 AF321A DEL → HDO May 16, 11:55 UTCMay 16, 12:16 UTC20m
2026-05-16 AF321A - May 16, 08:11 UTCMay 16, 10:16 UTC2h 5m
2026-05-16 AF321A - May 16, 06:16 UTCMay 16, 06:45 UTC30m
2026-05-16 AF321A - May 16, 04:15 UTCMay 16, 04:30 UTC15m
2026-05-15 AF321A - May 15, 08:25 UTCMay 15, 11:20 UTC2h 55m
2026-05-15 AF321A - May 15, 05:05 UTCMay 15, 06:45 UTC1h 40m
2026-05-15 AF321A HDO → DEL May 15, 03:35 UTCMay 15, 03:55 UTC20m
2026-05-11 AF321 BOS → CDG May 11, 09:25 UTCMay 11, 09:40 UTC15m
2026-05-11 AF321 BOS → CDG May 11, 03:35 UTCMay 11, 08:20 UTC4h 45m
2026-05-11 AF321 BOS → CDG May 11, 02:10 UTCMay 11, 02:25 UTC15m
2026-05-07 VUAUL HDO → HDO May 7, 06:40 UTCMay 7, 07:20 UTC40m
2026-05-02 AF321 BOS → CDG May 2, 11:35 UTCMay 2, 11:50 UTC15m
2026-05-02 AF321 BOS → CDG May 2, 08:20 UTCMay 2, 10:40 UTC2h 20m
2026-05-02 AF321 BOS → CDG May 2, 03:30 UTCMay 2, 05:20 UTC1h 50m
2026-05-01 AF321 BOS → CDG May 1, 08:55 UTCMay 1, 10:50 UTC1h 55m
2026-05-01 AF321 BOS → CDG May 1, 06:45 UTCMay 1, 07:00 UTC15m
2026-05-01 AF321 BOS → CDG May 1, 03:25 UTCMay 1, 05:05 UTC1h 40m
2026-05-01 AF321 BOS → CDG May 1, 02:05 UTCMay 1, 02:20 UTC15m
2026-04-28 AF321 BOS → CDG Apr 28, 07:40 UTCApr 28, 11:45 UTC4h 5m
2026-04-28 AF321 BOS → CDG Apr 28, 04:30 UTCApr 28, 06:30 UTC2h 0m
2026-04-28 AF321 BOS → CDG Apr 28, 02:45 UTCApr 28, 02:55 UTC10m
2026-04-27 AF321 BOS → CDG Apr 27, 13:05 UTCApr 27, 13:15 UTC10m
2026-04-27 AF321 BOS → CDG Apr 27, 10:20 UTCApr 27, 11:40 UTC1h 20m
2026-04-27 AF321 BOS → CDG Apr 27, 03:20 UTCApr 27, 07:15 UTC3h 55m
2026-04-25 AF321 BOS → CDG Apr 25, 10:00 UTCApr 25, 10:25 UTC25m
2026-04-25 AF321 BOS → CDG Apr 25, 07:05 UTCApr 25, 09:00 UTC1h 55m
2026-04-25 AF321 BOS → CDG Apr 25, 05:00 UTCApr 25, 05:45 UTC45m

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 CA-7081 page for operator, model, and routing details .

Mode-S 8003C1 frequently asked

What is Mode-S code 8003C1?
8003C1 is an ICAO 24-bit transponder address. Allocated to India. Assigned to CA-7081.
Where is Mode-S 8003C1 registered?
Mode-S code 8003C1 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8003C1 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8003C1, octal 40001701, decimal 8,389,569.
What flights does 8003C1 operate?
Mode-S 8003C1 has broadcast 6 distinct callsigns, including AF321, AF321A, VUAUL, VUAUP, VUAUO.