sensors Mode-S transponder

800D7A

ICAO 24-bit transponder address · allocated to India

Currently assigned to VT-SYJ · BOEING 737-800

Hex
800D7A
Octal
40006572
Decimal
8,392,058
Country
IN
Tail
VT-SYJ
Type
B738
No current signal · last broadcast 18h ago
Flights observed
5
Distinct callsigns
5
Country
IN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 800D7A.

Country allocation

The ICAO 24-bit address 800D7A 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 5 distinct

Callsign Airline Flights Last seen
SEJ809 - 1 2026-04-14
SEJ168 - 1 2026-04-13
SEJ167 - 1 2026-04-13
SEJ166 - 1 2026-04-13
SEJ163 Spicejet 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 SEJ809 - Apr 14, 10:40 UTCApr 14, 10:50 UTC10m
2026-04-13 SEJ168 - Apr 13, 12:35 UTCApr 13, 13:25 UTC50m
2026-04-13 SEJ163 SXR → DEL Apr 13, 10:30 UTCApr 13, 11:00 UTC30m
2026-04-13 SEJ167 - Apr 13, 02:55 UTCApr 13, 04:00 UTC1h 5m
2026-04-13 SEJ166 - Apr 13, 01:05 UTCApr 13, 02:00 UTC55m

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

Mode-S 800D7A frequently asked

What is Mode-S code 800D7A?
800D7A is an ICAO 24-bit transponder address. Allocated to India. Assigned to VT-SYJ.
Where is Mode-S 800D7A registered?
Mode-S code 800D7A is allocated to India (IN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 800D7A broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 800D7A, octal 40006572, decimal 8,392,058.
What flights does 800D7A operate?
Mode-S 800D7A has broadcast 5 distinct callsigns, including SEJ809, SEJ168, SEJ167, SEJ166, SEJ163.