sensors Mode-S transponder

801638

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-RTI · AIRBUS A-320neo

Hex
801638
Octal
40013070
Decimal
8,394,296
Country
IN
Tail
VT-RTI
Type
A20N
No current signal · last broadcast 19h ago
Flights observed
14
Distinct callsigns
8
Country
IN
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 801638.

Country allocation

The ICAO 24-bit address 801638 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 8 distinct

Callsign Airline Flights Last seen
AXB1996 - 4 2026-04-13
AXB3301 - 2 2026-04-14
AXB1532 - 2 2026-04-13
AXB1521 - 2 2026-04-13
AXB3302 - 1 2026-04-14
AXB2782 - 1 2026-04-13
AXB1752 - 1 2026-04-13
AXB1522 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 AXB3302 - Apr 14, 08:30 UTCApr 14, 09:05 UTC35m
2026-04-14 AXB3301 - Apr 14, 07:10 UTCApr 14, 07:30 UTC20m
2026-04-14 AXB3301 - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-13 AXB1532 - Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 AXB1532 - Apr 13, 15:15 UTCApr 13, 16:00 UTC45m
2026-04-13 AXB1996 - Apr 13, 13:35 UTCApr 13, 14:10 UTC35m
2026-04-13 AXB1996 - Apr 13, 12:20 UTCApr 13, 12:30 UTC10m
2026-04-13 AXB1996 - Apr 13, 11:55 UTCApr 13, 12:30 UTC35m
2026-04-13 AXB1996 - Apr 13, 11:35 UTCApr 13, 12:15 UTC40m
2026-04-13 AXB1752 - Apr 13, 10:05 UTCApr 13, 10:40 UTC35m
2026-04-13 AXB1522 - Apr 13, 08:20 UTCApr 13, 08:55 UTC35m
2026-04-13 AXB1521 - Apr 13, 06:35 UTCApr 13, 07:20 UTC45m
2026-04-13 AXB1521 - Apr 13, 04:40 UTCApr 13, 05:30 UTC50m
2026-04-13 AXB2782 - Apr 13, 00:40 UTCApr 13, 01:40 UTC1h 0m

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

Mode-S 801638 frequently asked

What is Mode-S code 801638?
801638 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-RTI.
Where is Mode-S 801638 registered?
Mode-S code 801638 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801638 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801638, octal 40013070, decimal 8,394,296.
What flights does 801638 operate?
Mode-S 801638 has broadcast 8 distinct callsigns, including AXB1996, AXB3301, AXB1532, AXB1521, AXB3302.