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sensors Mode-S transponder

801555

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-VKK · CESSNA 208 Caravan

Hex
801555
Octal
40012525
Decimal
8,394,069
Country
IN
Tail
VT-VKK
Type
C208
No current signal · last broadcast Jul 22, 05:15 UTC
Flights observed
231
Distinct callsigns
12
Country
IN
Last broadcast
Jul 22, 05:15 UTC

Last known position

Most recent position reported by Mode-S 801555.

Country allocation

The ICAO 24-bit address 801555 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 12 distinct

Callsign Airline Flights Last seen
IOA105 - 65 2026-07-21
IOA205 - 62 2026-07-22
IOA206 - 25 2026-07-20
IOA104 - 18 2026-07-22
IOA106 - 17 2026-07-21
IOA204 - 16 2026-07-22
IOA107 - 13 2026-07-19
IOA207 - 8 2026-07-15
VTVKK - 3 2026-04-18
IOA208 - 2 2026-04-23
IOA209 Iowa Airways 1 2026-04-23
IOA109 Iowa Airways 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 IOA204 - Jul 22, 05:05 UTCJul 22, 05:15 UTC10m
2026-07-22 IOA205 - Jul 22, 03:10 UTCJul 22, 04:25 UTC1h 15m
2026-07-22 IOA104 - Jul 22, 02:10 UTCJul 22, 02:20 UTC10m
2026-07-21 IOA106 - Jul 21, 09:40 UTCJul 21, 09:50 UTC10m
2026-07-21 IOA204 - Jul 21, 07:05 UTCJul 21, 07:15 UTC10m
2026-07-21 IOA205 - Jul 21, 06:00 UTCJul 21, 06:20 UTC20m
2026-07-21 IOA105 - Jul 21, 05:10 UTCJul 21, 05:30 UTC20m
2026-07-20 IOA206 - Jul 20, 08:15 UTCJul 20, 08:25 UTC10m
2026-07-20 IOA205 - Jul 20, 02:55 UTCJul 20, 03:55 UTC1h 0m
2026-07-19 IOA107 - Jul 19, 10:25 UTCJul 19, 10:45 UTC20m
2026-07-19 IOA206 - Jul 19, 08:20 UTCJul 19, 08:30 UTC10m
2026-07-19 IOA105 - Jul 19, 02:50 UTCJul 19, 04:00 UTC1h 10m
2026-07-18 IOA206 - Jul 18, 08:25 UTCJul 18, 08:40 UTC15m
2026-07-18 IOA105 - Jul 18, 02:50 UTCJul 18, 03:55 UTC1h 5m
2026-07-17 IOA107 - Jul 17, 11:25 UTCJul 17, 11:39 UTC15m
2026-07-17 IOA205 - Jul 17, 03:45 UTCJul 17, 04:10 UTC25m
2026-07-17 IOA105 - Jul 17, 02:54 UTCJul 17, 03:14 UTC20m
2026-07-16 IOA205 - Jul 16, 04:05 UTCJul 16, 04:25 UTC20m
2026-07-16 IOA105 - Jul 16, 02:55 UTCJul 16, 03:15 UTC20m
2026-07-16 IOA104 - Jul 16, 01:50 UTCJul 16, 02:05 UTC15m
2026-07-15 IOA207 - Jul 15, 11:40 UTCJul 15, 11:50 UTC10m
2026-07-15 IOA107 - Jul 15, 10:30 UTCJul 15, 11:05 UTC35m
2026-07-15 IOA106 - Jul 15, 07:35 UTCJul 15, 07:50 UTC15m
2026-07-15 IOA105 - Jul 15, 02:55 UTCJul 15, 04:05 UTC1h 10m
2026-07-14 IOA107 - Jul 14, 10:45 UTCJul 14, 11:00 UTC15m
2026-07-14 IOA205 - Jul 14, 03:40 UTCJul 14, 04:05 UTC25m
2026-07-14 IOA105 - Jul 14, 02:50 UTCJul 14, 03:10 UTC20m
2026-07-13 IOA205 - Jul 13, 03:40 UTCJul 13, 04:05 UTC25m
2026-07-13 IOA105 - Jul 13, 02:45 UTCJul 13, 03:10 UTC25m
2026-07-13 IOA104 - Jul 13, 00:55 UTCJul 13, 01:25 UTC30m
2026-07-12 IOA207 - Jul 12, 11:50 UTCJul 12, 12:01 UTC10m
2026-07-12 IOA107 - Jul 12, 10:55 UTCJul 12, 11:15 UTC20m
2026-07-12 IOA206 - Jul 12, 08:40 UTCJul 12, 08:50 UTC10m
2026-07-12 IOA204 - Jul 12, 04:50 UTCJul 12, 05:01 UTC10m
2026-07-12 IOA205 - Jul 12, 03:35 UTCJul 12, 04:01 UTC25m
2026-07-12 IOA105 - Jul 12, 02:45 UTCJul 12, 03:05 UTC20m
2026-07-11 IOA207 - Jul 11, 12:05 UTCJul 11, 12:15 UTC10m
2026-07-11 IOA205 - Jul 11, 04:25 UTCJul 11, 04:45 UTC20m
2026-07-11 IOA105 - Jul 11, 03:15 UTCJul 11, 03:35 UTC20m
2026-07-09 IOA107 - Jul 9, 11:10 UTCJul 9, 11:30 UTC20m
2026-07-09 IOA205 - Jul 9, 03:55 UTCJul 9, 04:20 UTC25m
2026-07-09 IOA105 - Jul 9, 03:05 UTCJul 9, 03:20 UTC15m
2026-07-08 IOA106 - Jul 8, 07:45 UTCJul 8, 08:05 UTC20m
2026-07-08 IOA205 - Jul 8, 04:20 UTCJul 8, 04:40 UTC20m
2026-07-08 IOA105 - Jul 8, 03:20 UTCJul 8, 03:45 UTC25m
2026-07-07 IOA205 - Jul 7, 04:35 UTCJul 7, 04:50 UTC15m
2026-07-07 IOA105 - Jul 7, 03:30 UTCJul 7, 03:55 UTC25m
2026-07-07 IOA104 - Jul 7, 02:35 UTCJul 7, 02:45 UTC10m
2026-07-06 IOA206 - Jul 6, 08:35 UTCJul 6, 08:45 UTC10m
2026-07-05 IOA207 - Jul 5, 11:55 UTCJul 5, 12:05 UTC10m

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

Mode-S 801555 frequently asked

What is Mode-S code 801555?
801555 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-VKK.
Where is Mode-S 801555 registered?
Mode-S code 801555 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801555 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 05:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801555, octal 40012525, decimal 8,394,069.
What flights does 801555 operate?
Mode-S 801555 has broadcast 12 distinct callsigns, including IOA105, IOA205, IOA206, IOA104, IOA106.