Apparatus

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sensors Mode-S transponder

70C124

ICAO 24-bit transponder address · allocated to Oman

Currently assigned to A4O-SK · BOEING 787-9 Dreamliner

Hex
70C124
Octal
34140444
Decimal
7,389,476
Country
OM
Tail
A4O-SK
Type
B789
No current signal · last broadcast 20h ago
Flights observed
9
Distinct callsigns
4
Country
OM
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 70C124.

Country allocation

The ICAO 24-bit address 70C124 falls within the block assigned to Oman (OM) by ICAO Annex 10, Volume III. Every aircraft registered in Oman 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 4 distinct

Callsign Airline Flights Last seen
OMA850 - 3 2026-04-13
OMA849 Oman Air 3 2026-04-13
OMA817 - 2 2026-04-13
OMA171 - 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 OMA171 - Apr 14, 10:30 UTCApr 14, 10:50 UTC20m
2026-04-13 OMA817 - Apr 13, 22:55 UTCApr 13, 23:20 UTC25m
2026-04-13 OMA817 - Apr 13, 20:55 UTCApr 13, 21:35 UTC40m
2026-04-13 OMA850 - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 OMA850 - Apr 13, 11:30 UTCApr 13, 12:05 UTC35m
2026-04-13 OMA850 - Apr 13, 07:20 UTCApr 13, 07:45 UTC25m
2026-04-13 OMA849 MCT → CGK Apr 13, 05:05 UTCApr 13, 05:20 UTC15m
2026-04-13 OMA849 MCT → CGK Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 OMA849 MCT → CGK Apr 13, 00:35 UTCApr 13, 04:10 UTC3h 35m

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 A4O-SK page for operator, model, and routing details .

Mode-S 70C124 frequently asked

What is Mode-S code 70C124?
70C124 is an ICAO 24-bit transponder address. Allocated to Oman. Assigned to A4O-SK.
Where is Mode-S 70C124 registered?
Mode-S code 70C124 is allocated to Oman (OM). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 70C124 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 70C124, octal 34140444, decimal 7,389,476.
What flights does 70C124 operate?
Mode-S 70C124 has broadcast 4 distinct callsigns, including OMA850, OMA849, OMA817, OMA171.