Apparatus

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sensors Mode-S transponder

478747

ICAO 24-bit transponder address · allocated to Norway

Currently assigned to LN-OQL · SIKORSKY S-92 Helibus

Hex
478747
Octal
21703507
Decimal
4,687,687
Country
NO
Tail
LN-OQL
Type
S92
No current signal · last broadcast 9d ago
Flights observed
273
Distinct callsigns
20
Country
NO
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S 478747.

Country allocation

The ICAO 24-bit address 478747 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 20 distinct

Callsign Airline Flights Last seen
HKS944 - 18 2026-06-22
HKS245 - 18 2026-06-23
HKS244 - 18 2026-06-22
HKS272 - 15 2026-06-24
HKS246 - 12 2026-06-19
HKS243 - 12 2026-06-25
HKS242 - 12 2026-06-12
HKS741 - 11 2026-06-20
HKS731 - 11 2026-06-20
HKS264 - 9 2026-06-24
HKS977 - 8 2026-05-29
HKS740 - 8 2026-06-07
HKS251 - 8 2026-06-24
HKS247 - 8 2026-06-19
HKS232 - 8 2026-06-23
HKS942 - 6 2026-06-09
HKS941 - 6 2026-06-25
HKS257 - 6 2026-06-09
HKS253 - 6 2026-06-04
HKS939 - 5 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 HKS167 - Jul 21, 05:00 UTCJul 21, 05:10 UTC10m
2026-07-16 HKS502 - Jul 16, 06:00 UTCJul 16, 06:20 UTC20m
2026-07-14 HKS501 - Jul 14, 19:35 UTCJul 14, 20:20 UTC45m
2026-07-06 HKS43T - Jul 6, 14:30 UTCJul 6, 14:55 UTC25m
2026-07-06 HKS41T - Jul 6, 12:15 UTCJul 6, 12:30 UTC15m
2026-07-06 HKS40T - Jul 6, 08:00 UTCJul 6, 08:20 UTC20m
2026-06-26 HKS55T - Jun 26, 07:35 UTCJun 26, 08:15 UTC40m
2026-06-25 HKS941 - Jun 25, 12:25 UTCJun 25, 12:50 UTC25m
2026-06-25 HKS941 - Jun 25, 11:25 UTCJun 25, 11:39 UTC15m
2026-06-25 HKS243 - Jun 25, 06:55 UTCJun 25, 07:19 UTC25m
2026-06-25 HKS243 - Jun 25, 05:29 UTCJun 25, 06:05 UTC35m
2026-06-24 HKS264 - Jun 24, 17:55 UTCJun 24, 18:09 UTC15m
2026-06-24 HKS272 BGO → BGO Jun 24, 13:40 UTCJun 24, 15:24 UTC1h 45m
2026-06-24 HKS732 - Jun 24, 12:25 UTCJun 24, 12:54 UTC30m
2026-06-24 HKS732 - Jun 24, 10:25 UTCJun 24, 10:55 UTC30m
2026-06-24 HKS251 - Jun 24, 08:20 UTCJun 24, 08:55 UTC35m
2026-06-24 HKS251 - Jun 24, 06:25 UTCJun 24, 06:55 UTC30m
2026-06-23 HKS245 - Jun 23, 11:59 UTCJun 23, 12:29 UTC30m
2026-06-23 HKS245 - Jun 23, 10:39 UTCJun 23, 11:10 UTC30m
2026-06-23 HKS232 - Jun 23, 08:04 UTCJun 23, 09:09 UTC1h 5m
2026-06-22 HKS944 - Jun 22, 15:24 UTCJun 22, 15:40 UTC15m
2026-06-22 HKS944 - Jun 22, 14:14 UTCJun 22, 14:24 UTC10m
2026-06-22 HKS243 - Jun 22, 12:54 UTCJun 22, 13:05 UTC10m
2026-06-22 HKS243 - Jun 22, 10:49 UTCJun 22, 11:00 UTC10m
2026-06-22 HKS232 - Jun 22, 09:04 UTCJun 22, 09:19 UTC15m
2026-06-22 HKS232 - Jun 22, 08:15 UTCJun 22, 08:25 UTC10m
2026-06-22 HKS244 - Jun 22, 06:54 UTCJun 22, 07:14 UTC20m
2026-06-22 HKS244 - Jun 22, 05:10 UTCJun 22, 05:24 UTC15m
2026-06-20 HKS741 - Jun 20, 16:34 UTCJun 20, 16:55 UTC20m
2026-06-20 HKS731 - Jun 20, 13:04 UTCJun 20, 13:24 UTC20m
2026-06-20 HKS731 - Jun 20, 11:44 UTCJun 20, 11:59 UTC15m
2026-06-20 HKS252 - Jun 20, 10:29 UTCJun 20, 10:59 UTC30m
2026-06-20 HKS252 - Jun 20, 08:34 UTCJun 20, 09:09 UTC35m
2026-06-19 HKS246 - Jun 19, 20:09 UTCJun 19, 20:40 UTC30m
2026-06-19 HKS246 - Jun 19, 18:44 UTCJun 19, 19:19 UTC35m
2026-06-19 HKS247 - Jun 19, 17:29 UTCJun 19, 18:09 UTC40m
2026-06-19 HKS247 - Jun 19, 15:54 UTCJun 19, 16:25 UTC30m
2026-06-19 HKS944 - Jun 19, 12:44 UTCJun 19, 14:09 UTC1h 25m
2026-06-19 HKS264 - Jun 19, 10:14 UTCJun 19, 10:24 UTC10m
2026-06-18 HKS731 - Jun 18, 17:10 UTCJun 18, 17:21 UTC11m
2026-06-18 HKS731 - Jun 18, 15:25 UTCJun 18, 15:35 UTC10m
2026-06-17 HKS264 - Jun 17, 15:25 UTCJun 17, 15:40 UTC15m
2026-06-17 HKS264 - Jun 17, 13:50 UTCJun 17, 14:00 UTC10m
2026-06-17 HKS272 - Jun 17, 12:35 UTCJun 17, 13:05 UTC30m
2026-06-17 HKS272 - Jun 17, 11:05 UTCJun 17, 11:40 UTC35m
2026-06-17 HKS266 - Jun 17, 09:45 UTCJun 17, 10:15 UTC30m
2026-06-17 HKS266 - Jun 17, 08:20 UTCJun 17, 08:55 UTC35m
2026-06-17 HKS251 - Jun 17, 06:45 UTCJun 17, 07:15 UTC30m
2026-06-17 HKS251 - Jun 17, 05:10 UTCJun 17, 05:40 UTC30m
2026-06-15 HKS741 - Jun 15, 17:25 UTCJun 15, 17:54 UTC30m

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

Mode-S 478747 frequently asked

What is Mode-S code 478747?
478747 is an ICAO 24-bit transponder address. Allocated to Norway. Assigned to LN-OQL.
Where is Mode-S 478747 registered?
Mode-S code 478747 is allocated to Norway (NO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 478747 broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 478747, octal 21703507, decimal 4,687,687.
What flights does 478747 operate?
Mode-S 478747 has broadcast 20 distinct callsigns, including HKS944, HKS245, HKS244, HKS272, HKS246.