Apparatus

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sensors Mode-S transponder

0C603B

ICAO 24-bit transponder address · allocated to Saint Kitts and Nevis

Currently assigned to 9Y-TTD · ATR-72-600

Hex
0C603B
Octal
03060073
Decimal
811,067
Country
KN
Tail
9Y-TTD
Type
AT76
No current signal · last broadcast 1d ago
Flights observed
74
Distinct callsigns
20
Country
KN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 0C603B.

Country allocation

The ICAO 24-bit address 0C603B falls within the block assigned to Saint Kitts and Nevis (KN) by ICAO Annex 10, Volume III. Every aircraft registered in Saint Kitts and Nevis 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
BWA217 Caribbean Airlines 12 2026-07-23
BWA216 Caribbean Airlines 12 2026-07-22
BWA224 Caribbean Airlines 8 2026-07-20
BWA225 - 6 2026-07-20
BWA448 - 5 2026-07-19
BWA241 Caribbean Airlines 3 2026-07-26
BWA240 Caribbean Airlines 3 2026-07-26
BWA445 - 2 2026-07-17
BWA285 - 2 2026-04-13
BWA284 - 2 2026-07-12
BWA283 - 2 2026-07-19
BWA282 - 2 2026-07-19
BWA267 - 2 2026-07-13
BWA266 - 2 2026-07-13
BWA223 Caribbean Airlines 2 2026-07-24
BWA222 Caribbean Airlines 2 2026-07-24
BWA4445 - 1 2026-07-08
BWA435 - 1 2026-07-22
BWA434 - 1 2026-07-22
BWA3225 - 1 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BWA241 GND → POS Jul 26, 20:20 UTCJul 26, 20:55 UTC35m
2026-07-26 BWA240 GND → BGI Jul 26, 18:30 UTCJul 26, 19:05 UTC35m
2026-07-26 BWA239 OGL → POS Jul 26, 14:45 UTCJul 26, 14:55 UTC10m
2026-07-25 BWA241 GND → POS Jul 25, 21:05 UTCJul 25, 21:35 UTC30m
2026-07-25 BWA240 GND → BGI Jul 25, 19:20 UTCJul 25, 19:55 UTC35m
2026-07-24 BWA223 SVD → POS Jul 24, 16:50 UTCJul 24, 17:20 UTC30m
2026-07-24 BWA223 SVD → POS Jul 24, 15:30 UTCJul 24, 15:55 UTC25m
2026-07-24 BWA222 POS → SVD Jul 24, 14:00 UTCJul 24, 14:30 UTC30m
2026-07-24 BWA222 POS → SVD Jul 24, 12:40 UTCJul 24, 13:00 UTC20m
2026-07-23 BWA217 BGI → POS Jul 23, 00:25 UTCJul 23, 01:05 UTC40m
2026-07-22 BWA217 BGI → POS Jul 22, 23:10 UTCJul 22, 23:25 UTC15m
2026-07-22 BWA216 BGI → OGL Jul 22, 19:15 UTCJul 22, 19:30 UTC15m
2026-07-22 BWA216 BGI → OGL Jul 22, 17:40 UTCJul 22, 18:20 UTC40m
2026-07-22 BWA435 - Jul 22, 14:40 UTCJul 22, 15:20 UTC40m
2026-07-22 BWA434 - Jul 22, 12:35 UTCJul 22, 13:10 UTC35m
2026-07-20 BWA225 - Jul 20, 23:55 UTCJul 21, 00:25 UTC30m
2026-07-20 BWA225 - Jul 20, 22:15 UTCJul 20, 22:45 UTC30m
2026-07-20 BWA224 SLU → BGI Jul 20, 21:05 UTCJul 20, 21:20 UTC15m
2026-07-20 BWA224 SLU → BGI Jul 20, 19:25 UTCJul 20, 20:00 UTC35m
2026-07-19 BWA283 - Jul 19, 23:00 UTCJul 19, 23:40 UTC40m
2026-07-19 BWA282 - Jul 19, 19:25 UTCJul 19, 19:35 UTC10m
2026-07-19 BWA282 - Jul 19, 17:55 UTCJul 19, 18:25 UTC30m
2026-07-19 BWA448 - Jul 19, 09:00 UTCJul 19, 09:40 UTC40m
2026-07-19 BWA448 - Jul 19, 02:05 UTCJul 19, 02:45 UTC40m
2026-07-17 BWA217 - Jul 17, 20:50 UTCJul 17, 21:30 UTC40m
2026-07-17 BWA217 - Jul 17, 19:35 UTCJul 17, 19:55 UTC20m
2026-07-17 BWA216 - Jul 17, 15:35 UTCJul 17, 15:49 UTC15m
2026-07-17 BWA216 - Jul 17, 14:00 UTCJul 17, 14:39 UTC40m
2026-07-17 BWA445 - Jul 17, 09:04 UTCJul 17, 09:45 UTC40m
2026-07-17 BWA448 - Jul 17, 02:05 UTCJul 17, 02:45 UTC40m
2026-07-16 BWA217 - Jul 16, 21:05 UTCJul 16, 21:40 UTC35m
2026-07-16 BWA217 - Jul 16, 20:00 UTCJul 16, 20:15 UTC15m
2026-07-16 BWA216 - Jul 16, 16:05 UTCJul 16, 16:19 UTC15m
2026-07-16 BWA216 - Jul 16, 14:20 UTCJul 16, 14:55 UTC35m
2026-07-15 BWA259 - Jul 15, 16:50 UTCJul 15, 17:20 UTC30m
2026-07-15 BWA258 - Jul 15, 13:20 UTCJul 15, 13:55 UTC35m
2026-07-15 BWA445 - Jul 15, 08:50 UTCJul 15, 09:25 UTC35m
2026-07-15 BWA448 - Jul 15, 02:00 UTCJul 15, 02:40 UTC40m
2026-07-14 BWA241 - Jul 14, 20:35 UTCJul 14, 21:10 UTC35m
2026-07-14 BWA240 - Jul 14, 18:55 UTCJul 14, 19:30 UTC35m
2026-07-13 BWA267 - Jul 13, 22:55 UTCJul 13, 23:25 UTC30m
2026-07-13 BWA266 - Jul 13, 18:50 UTCJul 13, 19:25 UTC35m
2026-07-12 BWA283 - Jul 12, 23:40 UTCJul 13, 00:25 UTC45m
2026-07-12 BWA284 - Jul 12, 20:05 UTCJul 12, 20:35 UTC30m
2026-07-12 BWA284 - Jul 12, 18:10 UTCJul 12, 18:50 UTC40m
2026-07-11 BWA217 - Jul 11, 20:55 UTCJul 11, 21:35 UTC40m
2026-07-11 BWA217 - Jul 11, 19:45 UTCJul 11, 20:00 UTC15m
2026-07-11 BWA216 - Jul 11, 15:45 UTCJul 11, 15:55 UTC10m
2026-07-11 BWA216 - Jul 11, 14:00 UTCJul 11, 14:40 UTC40m
2026-07-10 BWA217 - Jul 10, 21:05 UTCJul 10, 21:40 UTC35m

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 9Y-TTD page for operator, model, and routing details .

Mode-S 0C603B frequently asked

What is Mode-S code 0C603B?
0C603B is an ICAO 24-bit transponder address. Allocated to Saint Kitts and Nevis. Assigned to 9Y-TTD.
Where is Mode-S 0C603B registered?
Mode-S code 0C603B is allocated to Saint Kitts and Nevis (KN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C603B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C603B, octal 03060073, decimal 811,067.
What flights does 0C603B operate?
Mode-S 0C603B has broadcast 20 distinct callsigns, including BWA217, BWA216, BWA224, BWA225, BWA448.