sensors Mode-S transponder

47A2F4

ICAO 24-bit transponder address · allocated to Norway

Currently assigned to LN-OOU · AIRBUS HELICOPTERS EC-145

Hex
47A2F4
Octal
21721364
Decimal
4,694,772
Country
NO
Tail
LN-OOU
Type
EC45
No current signal · last broadcast 22h ago
Flights observed
6
Distinct callsigns
1
Country
NO
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 47A2F4.

Country allocation

The ICAO 24-bit address 47A2F4 falls within the block assigned to Norway (NO) by ICAO Annex 10, Volume III. Every aircraft registered in Norway 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
DOC33 - 6 2026-04-14

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 DOC33 - Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-13 DOC33 - Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 DOC33 - Apr 13, 14:05 UTCApr 13, 14:15 UTC10m
2026-04-13 DOC33 - Apr 13, 07:25 UTCApr 13, 07:50 UTC25m
2026-04-13 DOC33 - Apr 13, 06:10 UTCApr 13, 06:45 UTC35m
2026-04-13 DOC33 - Apr 13, 05:20 UTCApr 13, 05:35 UTC15m

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 LN-OOU page for operator, model, and routing details .

Mode-S 47A2F4 frequently asked

What is Mode-S code 47A2F4?
47A2F4 is an ICAO 24-bit transponder address. Allocated to Norway. Assigned to LN-OOU.
Where is Mode-S 47A2F4 registered?
Mode-S code 47A2F4 is allocated to Norway (NO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 47A2F4 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 47A2F4, octal 21721364, decimal 4,694,772.
What flights does 47A2F4 operate?
Mode-S 47A2F4 has broadcast 1 distinct callsign, including DOC33.