Apparatus

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sensors Mode-S transponder

04C21A

ICAO 24-bit transponder address · allocated to Kenya

Currently assigned to 5Y-JXH · DE HAVILLAND DHC-8-400 Dash 8

Hex
04C21A
Octal
01141032
Decimal
311,834
Country
KE
Tail
5Y-JXH
Type
DH8D
No current signal · last broadcast 2d ago
Flights observed
55
Distinct callsigns
18
Country
KE
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 04C21A.

Country allocation

The ICAO 24-bit address 04C21A 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 18 distinct

Callsign Airline Flights Last seen
JMA8645 Jambojet 14 2026-07-10
JMA8641 - 14 2026-07-15
JMA8643 - 5 2026-07-12
JMA8685 - 3 2026-07-07
JMA8666 Jambojet 3 2026-07-09
JMA8664 - 2 2026-06-22
JMA8662 - 2 2026-07-16
JMA8651 - 2 2026-07-09
JMA8691 Jambojet 1 2026-05-11
JMA8679 - 1 2026-04-19
JMA8668 Jambojet 1 2026-06-22
JMA8665 Jambojet 1 2026-05-13
JMA8660 - 1 2026-06-22
JMA8655 Jambojet 1 2026-05-18
JMA8650 Jambojet 1 2026-04-20
JMA8647 - 1 2026-04-20
JMA8621 Jambojet 1 2026-05-12
JMA8111 - 1 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 JMA8662 - Jul 16, 04:35 UTCJul 16, 04:45 UTC10m
2026-07-15 JMA8641 - Jul 15, 07:45 UTCJul 15, 07:55 UTC10m
2026-07-13 JMA8111 - Jul 13, 08:45 UTCJul 13, 09:05 UTC20m
2026-07-12 JMA8643 - Jul 12, 09:55 UTCJul 12, 10:05 UTC10m
2026-07-10 JMA8645 MYD → NBO Jul 10, 15:10 UTCJul 10, 15:20 UTC10m
2026-07-10 JMA8641 - Jul 10, 07:30 UTCJul 10, 07:40 UTC10m
2026-07-09 JMA8666 NBO → EDL Jul 9, 13:20 UTCJul 9, 13:30 UTC10m
2026-07-09 JMA8651 - Jul 9, 05:00 UTCJul 9, 05:10 UTC10m
2026-07-07 JMA8666 NBO → EDL Jul 7, 14:00 UTCJul 7, 14:10 UTC10m
2026-07-07 JMA8685 - Jul 7, 08:45 UTCJul 7, 08:55 UTC10m
2026-07-04 JMA8643 - Jul 4, 10:00 UTCJul 4, 10:10 UTC10m
2026-07-04 JMA8662 - Jul 4, 04:45 UTCJul 4, 04:55 UTC10m
2026-06-23 JMA8645 MYD → NBO Jun 23, 15:09 UTCJun 23, 15:19 UTC10m
2026-06-22 JMA8668 NBO → EDL Jun 22, 15:54 UTCJun 22, 16:05 UTC10m
2026-06-22 JMA8664 - Jun 22, 09:34 UTCJun 22, 09:45 UTC10m
2026-06-22 JMA8660 - Jun 22, 03:30 UTCJun 22, 03:40 UTC10m
2026-06-21 JMA8645 MYD → NBO Jun 21, 15:09 UTCJun 21, 15:19 UTC10m
2026-06-21 JMA8641 - Jun 21, 07:49 UTCJun 21, 07:59 UTC10m
2026-06-20 JMA8645 MYD → NBO Jun 20, 15:24 UTCJun 20, 15:34 UTC10m
2026-06-20 JMA8641 - Jun 20, 07:44 UTCJun 20, 07:54 UTC10m
2026-06-19 JMA8645 MYD → NBO Jun 19, 15:14 UTCJun 19, 15:29 UTC15m
2026-06-19 JMA8641 - Jun 19, 07:34 UTCJun 19, 07:54 UTC20m
2026-06-12 JMA8645 MYD → NBO Jun 12, 15:15 UTCJun 12, 15:25 UTC10m
2026-06-12 JMA8641 MYD → NBO Jun 12, 07:35 UTCJun 12, 07:45 UTC10m
2026-06-10 JMA8685 LAU → NBO Jun 10, 08:30 UTCJun 10, 08:40 UTC10m
2026-06-09 JMA8645 MYD → NBO Jun 9, 15:15 UTCJun 9, 15:35 UTC20m
2026-06-06 JMA8641 MYD → NBO Jun 6, 07:25 UTCJun 6, 07:35 UTC10m
2026-06-02 JMA8645 MYD → NBO Jun 2, 15:05 UTCJun 2, 15:15 UTC10m
2026-06-02 JMA8641 MYD → NBO Jun 2, 07:35 UTCJun 2, 07:45 UTC10m
2026-06-01 JMA8666 NBO → EDL Jun 1, 14:20 UTCJun 1, 14:30 UTC10m
2026-05-31 JMA8664 NBO → EDL May 31, 09:40 UTCMay 31, 09:50 UTC10m
2026-05-29 JMA8641 MYD → NBO May 29, 07:30 UTCMay 29, 07:40 UTC10m
2026-05-28 JMA8645 MYD → NBO May 28, 15:15 UTCMay 28, 15:25 UTC10m
2026-05-28 JMA8641 MYD → NBO May 28, 07:20 UTCMay 28, 07:30 UTC10m
2026-05-27 JMA8645 MYD → NBO May 27, 15:05 UTCMay 27, 15:20 UTC15m
2026-05-26 JMA8651 KIS → NBO May 26, 04:50 UTCMay 26, 05:00 UTC10m
2026-05-25 JMA8645 MYD → NBO May 25, 15:10 UTCMay 25, 15:20 UTC10m
2026-05-25 JMA8641 MYD → NBO May 25, 07:35 UTCMay 25, 07:45 UTC10m
2026-05-24 JMA8643 MYD → NBO May 24, 10:15 UTCMay 24, 10:25 UTC10m
2026-05-18 JMA8655 KIS → NBO May 18, 13:30 UTCMay 18, 13:40 UTC10m
2026-05-17 JMA8643 MYD → NBO May 17, 10:15 UTCMay 17, 10:25 UTC10m
2026-05-14 JMA8643 MYD → NBO May 14, 09:50 UTCMay 14, 10:00 UTC10m
2026-05-13 JMA8665 EDL → NBO May 13, 12:25 UTCMay 13, 12:35 UTC10m
2026-05-12 JMA8621 EDL → NBO May 12, 08:25 UTCMay 12, 08:40 UTC15m
2026-05-11 JMA8691 UKA → NBO May 11, 06:40 UTCMay 11, 07:00 UTC20m
2026-05-06 JMA8645 MYD → NBO May 6, 15:15 UTCMay 6, 15:25 UTC10m
2026-04-22 JMA8641 MYD → NBO Apr 22, 07:45 UTCApr 22, 07:55 UTC10m
2026-04-20 JMA8647 - Apr 20, 15:55 UTCApr 20, 16:05 UTC10m
2026-04-20 JMA8685 LAU → NBO Apr 20, 09:05 UTCApr 20, 09:15 UTC10m
2026-04-20 JMA8650 NBO → KIS Apr 20, 03:30 UTCApr 20, 03:40 UTC10m

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

Mode-S 04C21A frequently asked

What is Mode-S code 04C21A?
04C21A is an ICAO 24-bit transponder address. Allocated to Kenya. Assigned to 5Y-JXH.
Where is Mode-S 04C21A registered?
Mode-S code 04C21A is allocated to Kenya (KE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 04C21A broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 04C21A, octal 01141032, decimal 311,834.
What flights does 04C21A operate?
Mode-S 04C21A has broadcast 18 distinct callsigns, including JMA8645, JMA8641, JMA8643, JMA8685, JMA8666.