Apparatus

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sensors Mode-S transponder

800D81

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-SMS · BEECH 200 Super King Air

Hex
800D81
Octal
40006601
Decimal
8,392,065
Country
IN
Tail
VT-SMS
Type
BE20
No current signal · last broadcast 2d ago
Flights observed
36
Distinct callsigns
1
Country
IN
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 800D81.

Country allocation

The ICAO 24-bit address 800D81 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 1 distinct

Callsign Airline Flights Last seen
VTSMS - 36 2026-07-23

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-07-23 VTSMS - Jul 23, 13:30 UTCJul 23, 13:55 UTC25m
2026-07-23 VTSMS - Jul 23, 10:15 UTCJul 23, 10:25 UTC10m
2026-07-23 VTSMS - Jul 23, 07:55 UTCJul 23, 08:20 UTC25m
2026-07-23 VTSMS - Jul 23, 04:50 UTCJul 23, 05:10 UTC20m
2026-07-22 VTSMS - Jul 22, 11:50 UTCJul 22, 12:15 UTC25m
2026-07-21 VTSMS - Jul 21, 05:35 UTCJul 21, 05:55 UTC20m
2026-07-20 VTSMS - Jul 20, 08:00 UTCJul 20, 08:20 UTC20m
2026-07-20 VTSMS - Jul 20, 05:35 UTCJul 20, 06:00 UTC25m
2026-07-19 VTSMS - Jul 19, 12:50 UTCJul 19, 15:15 UTC2h 25m
2026-07-18 VTSMS - Jul 18, 16:20 UTCJul 18, 17:15 UTC55m
2026-07-16 VTSMS - Jul 16, 06:40 UTCJul 16, 07:05 UTC25m
2026-07-16 VTSMS - Jul 16, 04:20 UTCJul 16, 04:55 UTC35m
2026-07-13 VTSMS - Jul 13, 09:15 UTCJul 13, 09:30 UTC15m
2026-07-13 VTSMS - Jul 13, 07:30 UTCJul 13, 07:55 UTC25m
2026-07-12 VTSMS - Jul 12, 06:15 UTCJul 12, 06:35 UTC20m
2026-07-11 VTSMS - Jul 11, 11:05 UTCJul 11, 11:30 UTC25m
2026-07-10 VTSMS - Jul 10, 07:05 UTCJul 10, 07:25 UTC20m
2026-07-10 VTSMS - Jul 10, 04:35 UTCJul 10, 04:55 UTC20m
2026-07-07 VTSMS - Jul 7, 12:00 UTCJul 7, 12:20 UTC20m
2026-07-06 VTSMS - Jul 6, 11:10 UTCJul 6, 12:40 UTC1h 30m
2026-07-05 VTSMS - Jul 5, 07:50 UTCJul 5, 08:05 UTC15m
2026-07-05 VTSMS - Jul 5, 04:55 UTCJul 5, 05:10 UTC15m
2026-07-03 VTSMS - Jul 3, 08:05 UTCJul 3, 08:30 UTC25m
2026-06-24 VTSMS - Jun 24, 11:39 UTCJun 24, 11:54 UTC15m
2026-06-23 VTSMS - Jun 23, 05:04 UTCJun 23, 05:24 UTC20m
2026-06-20 VTSMS - Jun 20, 09:59 UTCJun 20, 10:25 UTC25m
2026-06-01 VTSMS - Jun 1, 01:50 UTCJun 1, 02:25 UTC35m
2026-05-16 VTSMS - May 16, 09:16 UTCMay 16, 09:35 UTC20m
2026-05-16 VTSMS - May 16, 07:55 UTCMay 16, 08:16 UTC20m
2026-05-11 VTSMS - May 11, 07:25 UTCMay 11, 07:40 UTC15m
2026-05-11 VTSMS - May 11, 04:45 UTCMay 11, 05:10 UTC25m
2026-04-26 VTSMS - Apr 26, 11:45 UTCApr 26, 12:20 UTC35m
2026-04-26 VTSMS - Apr 26, 04:50 UTCApr 26, 05:20 UTC30m
2026-04-15 VTSMS - Apr 15, 03:35 UTCApr 15, 03:45 UTC10m
2026-04-15 VTSMS - Apr 15, 02:30 UTCApr 15, 02:45 UTC15m
2026-04-14 VTSMS - Apr 14, 23:55 UTCApr 15, 00:20 UTC25m

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-SMS page for operator, model, and routing details .

Mode-S 800D81 frequently asked

What is Mode-S code 800D81?
800D81 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-SMS.
Where is Mode-S 800D81 registered?
Mode-S code 800D81 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 800D81 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 800D81, octal 40006601, decimal 8,392,065.
What flights does 800D81 operate?
Mode-S 800D81 has broadcast 1 distinct callsign, including VTSMS.