sensors Mode-S transponder

801819

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-NHD · AIRBUS A-321neo

Hex
801819
Octal
40014031
Decimal
8,394,777
Country
IN
Tail
VT-NHD
Type
A21N
Broadcasting now · callsign IGO607K · 7,950 ft
Flights observed
15
Distinct callsigns
9
Country
IN
Last broadcast
19h ago

Current position

801819 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 801819 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 9 distinct

Callsign Airline Flights Last seen
IGO6515 - 3 2026-04-13
IGO6039 IndiGo Airlines 2 2026-04-13
IGO276P - 2 2026-04-12
IGO2314 - 2 2026-04-13
IGO176 - 2 2026-04-13
IGO720F - 1 2026-04-13
IGO671W - 1 2026-04-14
IGO390M IndiGo Airlines 1 2026-04-14
IGO16WA - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 IGO390M DEL → BOM Apr 14, 08:45 UTCApr 14, 09:05 UTC20m
2026-04-14 IGO671W - Apr 14, 06:20 UTCApr 14, 07:10 UTC50m
2026-04-13 IGO16WA - Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 IGO6515 - Apr 13, 17:30 UTCApr 13, 17:55 UTC25m
2026-04-13 IGO6515 - Apr 13, 15:50 UTCApr 13, 17:55 UTC2h 5m
2026-04-13 IGO6515 - Apr 13, 15:30 UTCApr 13, 16:05 UTC35m
2026-04-13 IGO6039 BLR → DEL Apr 13, 13:30 UTCApr 13, 14:10 UTC40m
2026-04-13 IGO6039 BLR → DEL Apr 13, 11:50 UTCApr 13, 12:10 UTC20m
2026-04-13 IGO176 - Apr 13, 09:55 UTCApr 13, 10:10 UTC15m
2026-04-13 IGO176 - Apr 13, 07:50 UTCApr 13, 08:15 UTC25m
2026-04-13 IGO720F - Apr 13, 04:20 UTCApr 13, 06:35 UTC2h 15m
2026-04-13 IGO2314 - Apr 13, 02:20 UTCApr 13, 02:40 UTC20m
2026-04-13 IGO2314 - Apr 13, 00:20 UTCApr 13, 00:50 UTC30m
2026-04-12 IGO276P - Apr 12, 20:00 UTCApr 12, 20:15 UTC15m
2026-04-12 IGO276P - Apr 12, 18:20 UTCApr 12, 18:30 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-NHD page for operator, model, and routing details .

Mode-S 801819 frequently asked

What is Mode-S code 801819?
801819 is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-NHD.
Where is Mode-S 801819 registered?
Mode-S code 801819 is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 801819 broadcasting right now?
Yes. Mode-S 801819 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 801819, octal 40014031, decimal 8,394,777.
What flights does 801819 operate?
Mode-S 801819 has broadcast 9 distinct callsigns, including IGO6515, IGO6039, IGO276P, IGO2314, IGO176.