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sensors Mode-S transponder

04C03B

ICAO 24-bit transponder address · allocated to Kenya

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

Hex
04C03B
Octal
01140073
Decimal
311,355
Country
KE
Tail
5Y-KYD
Type
B738
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
190
Distinct callsigns
20
Country
KE
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S 04C03B.

Country allocation

The ICAO 24-bit address 04C03B 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 20 distinct

Callsign Airline Flights Last seen
KQA761 - 19 2026-07-17
KQA760 - 18 2026-07-17
KQA784 - 10 2026-07-15
KQA785 - 9 2026-07-15
KQA764 Kenya Airways 8 2026-07-16
KQA305 Kenya Airways 8 2026-07-24
KQA792 Kenya Airways 7 2026-07-20
KQA762 Kenya Airways 7 2026-07-13
KQA521 Kenya Airways 7 2026-07-25
KQA520 Kenya Airways 7 2026-07-25
KQA310 Kenya Airways 7 2026-07-26
KQA765 - 6 2026-07-16
KQA763 Kenya Airways 6 2026-07-13
KQA311 - 6 2026-07-10
KQA304 Kenya Airways 6 2026-07-24
KQA793 Kenya Airways 5 2026-05-27
KQA534 Kenya Airways 5 2026-05-28
KQA205 Kenya Airways 5 2026-07-25
KQA535 - 4 2026-07-09
KQA204 Kenya Airways 4 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KQA310 NBO → DXB Jul 26, 20:50 UTCJul 26, 21:25 UTC35m
2026-07-25 KQA521 ABJ → NBO Jul 25, 20:05 UTCJul 26, 02:35 UTC6h 30m
2026-07-25 KQA520 NBO → ABJ Jul 25, 18:00 UTCJul 25, 18:45 UTC45m
2026-07-25 KQA205 BOM → NBO Jul 25, 01:40 UTCJul 25, 02:15 UTC35m
2026-07-24 KQA204 NBO → BOM Jul 24, 22:55 UTCJul 24, 23:40 UTC45m
2026-07-24 KQA305 DXB → NBO Jul 24, 03:15 UTCJul 24, 03:45 UTC30m
2026-07-24 KQA304 NBO → DXB Jul 24, 00:40 UTCJul 24, 01:10 UTC30m
2026-07-22 KQA203 BOM → NBO Jul 22, 23:15 UTCJul 22, 23:55 UTC40m
2026-07-22 KQA202 NBO → BOM Jul 22, 20:15 UTCJul 22, 21:25 UTC1h 10m
2026-07-21 KQA521 ABJ → NBO Jul 21, 18:05 UTCJul 21, 18:45 UTC40m
2026-07-21 KQA520 NBO → ABJ Jul 21, 10:45 UTCJul 21, 16:50 UTC6h 5m
2026-07-20 KQA792 VFA → CPT Jul 20, 14:25 UTCJul 20, 14:50 UTC25m
2026-07-20 KQA792 VFA → CPT Jul 20, 12:20 UTCJul 20, 13:00 UTC40m
2026-07-19 KQA509 ACC → NBO Jul 19, 22:25 UTCJul 19, 23:00 UTC35m
2026-07-18 KQA508 - Jul 18, 12:50 UTCJul 18, 13:25 UTC35m
2026-07-17 KQA761 - Jul 17, 11:00 UTCJul 17, 11:30 UTC30m
2026-07-17 KQA760 - Jul 17, 08:15 UTCJul 17, 08:45 UTC30m
2026-07-16 KQA765 - Jul 16, 23:44 UTCJul 17, 00:10 UTC25m
2026-07-16 KQA764 NBO → JNB Jul 16, 22:00 UTCJul 16, 22:30 UTC30m
2026-07-15 KQA785 - Jul 15, 21:30 UTCJul 15, 21:50 UTC20m
2026-07-15 KQA784 - Jul 15, 19:20 UTCJul 15, 20:00 UTC40m
2026-07-14 KQA511 - Jul 14, 12:25 UTCJul 15, 00:15 UTC11h 49m
2026-07-13 KQA763 JNB → NBO Jul 13, 15:30 UTCJul 13, 15:55 UTC25m
2026-07-13 KQA762 NBO → JNB Jul 13, 13:25 UTCJul 13, 14:00 UTC35m
2026-07-12 KQA783 LVI → NBO Jul 12, 12:35 UTCJul 12, 12:50 UTC15m
2026-07-12 KQA782 - Jul 12, 10:40 UTCJul 12, 11:15 UTC35m
2026-07-11 KQA508 - Jul 11, 17:35 UTCJul 11, 23:30 UTC5h 55m
2026-07-10 KQA311 - Jul 10, 21:15 UTCJul 10, 21:55 UTC40m
2026-07-10 KQA310 - Jul 10, 18:40 UTCJul 10, 19:15 UTC35m
2026-07-09 KQA535 - Jul 9, 19:10 UTCJul 10, 00:05 UTC4h 55m
2026-07-09 KQA761 - Jul 9, 10:45 UTCJul 9, 11:15 UTC30m
2026-07-09 KQA760 - Jul 9, 08:25 UTCJul 9, 08:55 UTC30m
2026-07-08 KQA761 - Jul 8, 10:30 UTCJul 8, 11:00 UTC30m
2026-07-08 KQA760 - Jul 8, 08:15 UTCJul 8, 08:50 UTC35m
2026-07-07 KQA305 - Jul 7, 05:05 UTCJul 7, 05:35 UTC30m
2026-07-07 KQA304 - Jul 7, 02:55 UTCJul 7, 03:30 UTC35m
2026-07-06 KQA533 - Jul 6, 17:20 UTCJul 6, 17:45 UTC25m
2026-07-05 KQA203 - Jul 5, 23:30 UTCJul 6, 00:05 UTC35m
2026-07-05 KQA202 - Jul 5, 20:40 UTCJul 5, 21:40 UTC1h 0m
2026-07-04 KQA521 - Jul 4, 19:55 UTCJul 5, 02:15 UTC6h 20m
2026-07-04 KQA520 - Jul 4, 12:20 UTCJul 4, 18:25 UTC6h 5m
2026-07-03 KQA311 DST → DST Jul 3, 23:30 UTCJul 4, 00:00 UTC30m
2026-07-03 KQA310 - Jul 3, 21:10 UTCJul 3, 21:45 UTC35m
2026-07-03 KQA765D - Jul 3, 03:35 UTCJul 3, 04:05 UTC30m
2026-07-03 KQA764 - Jul 3, 01:25 UTCJul 3, 01:55 UTC30m
2026-07-02 KQA305 - Jul 2, 03:55 UTCJul 2, 04:25 UTC30m
2026-07-02 KQA304 - Jul 2, 01:25 UTCJul 2, 02:15 UTC50m
2026-07-01 KQA763 JNB → NBO Jul 1, 15:40 UTCJul 1, 16:05 UTC25m
2026-07-01 KQA762 NBO → JNB Jul 1, 13:00 UTCJul 1, 13:35 UTC35m
2026-06-30 KQA762 NBO → JNB Jun 30, 16:50 UTCJul 1, 13:35 UTC20h 45m

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

Mode-S 04C03B frequently asked

What is Mode-S code 04C03B?
04C03B is an ICAO 24-bit transponder address. Allocated to Kenya. Assigned to 5Y-KYD.
Where is Mode-S 04C03B registered?
Mode-S code 04C03B is allocated to Kenya (KE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04C03B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04C03B, octal 01140073, decimal 311,355.
What flights does 04C03B operate?
Mode-S 04C03B has broadcast 20 distinct callsigns, including KQA761, KQA760, KQA784, KQA785, KQA764.