sensors Mode-S transponder

04C045

ICAO 24-bit transponder address · allocated to Kenya

Currently assigned to 5Y-KYF · BOEING 737-800

Hex
04C045
Octal
01140105
Decimal
311,365
Country
KE
Tail
5Y-KYF
Type
B738
No current signal · last broadcast 15h ago
Flights observed
4
Distinct callsigns
4
Country
KE
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 04C045.

Country allocation

The ICAO 24-bit address 04C045 falls within the block assigned to Kenya (KE) by ICAO Annex 10, Volume III. Every aircraft registered in Kenya 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
KQA761 - 1 2026-04-13
KQA760 - 1 2026-04-13
KQA520 - 1 2026-04-14
KQA511 Kenya Airways 1 2026-04-12

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 KQA520 - Apr 14, 10:35 UTCApr 14, 11:05 UTC30m
2026-04-13 KQA761 - Apr 13, 10:50 UTCApr 13, 11:20 UTC30m
2026-04-13 KQA760 - Apr 13, 08:35 UTCApr 13, 09:10 UTC35m
2026-04-12 KQA511 ACC → NBO Apr 12, 23:55 UTCApr 13, 00:20 UTC25m

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 5Y-KYF page for operator, model, and routing details .

Mode-S 04C045 frequently asked

What is Mode-S code 04C045?
04C045 is an ICAO 24-bit transponder address. Allocated to Kenya. Assigned to 5Y-KYF.
Where is Mode-S 04C045 registered?
Mode-S code 04C045 is allocated to Kenya (KE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04C045 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04C045, octal 01140105, decimal 311,365.
What flights does 04C045 operate?
Mode-S 04C045 has broadcast 4 distinct callsigns, including KQA761, KQA760, KQA520, KQA511.