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sensors Mode-S transponder

C01A4B

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FJYW · ATR-72-600 · operated by CALM AIR INTERNATIONAL LP AS REPRESENTED BY ITS GENERAL PARTNER, CALM AIR GP INC.

Hex
C01A4B
Octal
60015113
Decimal
12,589,643
Country
CA
Tail
C-FJYW
Type
AT76
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
375
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S C01A4B.

Country allocation

The ICAO 24-bit address C01A4B falls within the block assigned to Canada (CA) by ICAO Annex 10, Volume III. Every aircraft registered in Canada 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
CAV221 - 31 2026-07-25
CAV211 - 21 2026-07-26
CAV225 Calm Air 17 2026-07-24
CAV224 - 16 2026-07-24
CAV228 - 15 2026-07-25
CAV218 Calm Air 15 2026-07-24
CAV212 Calm Air 13 2026-07-23
CAV273 Calm Air 12 2026-07-24
CAV272 Calm Air 11 2026-07-24
CAV213 - 11 2026-07-23
CAV258 Calm Air 10 2026-07-22
CAV251 - 10 2026-07-14
CAV250 Calm Air 10 2026-07-14
CAV230 - 10 2026-07-22
CAV231 - 9 2026-07-22
CAV226 - 9 2026-07-19
CAV271 - 8 2026-07-19
CAV264 Calm Air 8 2026-07-19
CAV259 Calm Air 8 2026-07-23
CAV270 - 7 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAV255 YZS → YRT Jul 26, 20:20 UTCJul 26, 20:55 UTC35m
2026-07-26 CAV254 YRT → YZS Jul 26, 18:05 UTCJul 26, 18:50 UTC45m
2026-07-26 CAV211 - Jul 26, 14:55 UTCJul 26, 15:10 UTC15m
2026-07-26 CAV216 YRT → YEK Jul 26, 00:05 UTCJul 26, 00:25 UTC20m
2026-07-25 CAV235 YUT → YRT Jul 25, 20:30 UTCJul 25, 21:00 UTC30m
2026-07-25 CAV234 YRT → YUT Jul 25, 18:00 UTCJul 25, 18:40 UTC40m
2026-07-25 CAV221 - Jul 25, 14:05 UTCJul 25, 14:35 UTC30m
2026-07-25 CAV228 - Jul 25, 01:10 UTCJul 25, 01:40 UTC30m
2026-07-24 CAV225 YBK → YRT Jul 24, 22:40 UTCJul 24, 23:10 UTC30m
2026-07-24 CAV224 - Jul 24, 20:35 UTCJul 24, 21:05 UTC30m
2026-07-24 CAV273 YCS → YRT Jul 24, 18:45 UTCJul 24, 19:00 UTC15m
2026-07-24 CAV272 YRT → YCS Jul 24, 17:40 UTCJul 24, 18:00 UTC20m
2026-07-24 CAV211 - Jul 24, 14:45 UTCJul 24, 15:00 UTC15m
2026-07-24 CAV218 YRT → YEK Jul 24, 01:50 UTCJul 24, 02:10 UTC20m
2026-07-23 CAV213 - Jul 23, 19:15 UTCJul 23, 19:25 UTC10m
2026-07-23 CAV212 YRT → YEK Jul 23, 17:30 UTCJul 23, 17:40 UTC10m
2026-07-23 CAV211 - Jul 23, 15:15 UTCJul 23, 15:25 UTC10m
2026-07-23 CAV218 YRT → YEK Jul 23, 02:35 UTCJul 23, 02:50 UTC15m
2026-07-23 CAV259 YZS → YRT Jul 23, 00:00 UTCJul 23, 00:35 UTC35m
2026-07-22 CAV258 YRT → YZS Jul 22, 21:40 UTCJul 22, 22:15 UTC35m
2026-07-22 CAV231 - Jul 22, 19:55 UTCJul 22, 20:30 UTC35m
2026-07-22 CAV230 - Jul 22, 17:10 UTCJul 22, 17:50 UTC40m
2026-07-21 CAV239 YUT → YRT Jul 21, 23:50 UTCJul 22, 00:25 UTC35m
2026-07-21 CAV238 YRT → YUT Jul 21, 21:10 UTCJul 21, 21:50 UTC40m
2026-07-21 CAV213 - Jul 21, 19:20 UTCJul 21, 19:35 UTC15m
2026-07-21 CAV212 YRT → YEK Jul 21, 17:35 UTCJul 21, 17:55 UTC20m
2026-07-20 CAV259 YZS → YRT Jul 20, 23:45 UTCJul 21, 00:15 UTC30m
2026-07-20 CAV258 - Jul 20, 21:15 UTCJul 20, 21:55 UTC40m
2026-07-20 CAV263 YXN → YRT Jul 20, 19:05 UTCJul 20, 19:15 UTC10m
2026-07-20 CAV262 YRT → YXN Jul 20, 17:55 UTCJul 20, 18:10 UTC15m
2026-07-20 CAV221 - Jul 20, 14:15 UTCJul 20, 14:45 UTC30m
2026-07-19 CAV226 - Jul 19, 22:50 UTCJul 19, 23:15 UTC25m
2026-07-19 CAV265 YXN → YRT Jul 19, 21:05 UTCJul 19, 21:20 UTC15m
2026-07-19 CAV264 YRT → YXN Jul 19, 19:50 UTCJul 19, 20:00 UTC10m
2026-07-19 CAV271 - Jul 19, 17:55 UTCJul 19, 18:15 UTC20m
2026-07-19 CAV270 - Jul 19, 17:05 UTCJul 19, 17:15 UTC10m
2026-07-18 CAV221 - Jul 18, 13:55 UTCJul 18, 14:25 UTC30m
2026-07-18 CAV228 - Jul 18, 00:39 UTCJul 18, 01:10 UTC30m
2026-07-17 CAV225 YBK → YRT Jul 17, 22:25 UTCJul 17, 22:49 UTC25m
2026-07-17 CAV224 - Jul 17, 20:44 UTCJul 17, 21:15 UTC30m
2026-07-17 CAV273 YCS → YRT Jul 17, 18:25 UTCJul 17, 18:40 UTC15m
2026-07-17 CAV272 YRT → YCS Jul 17, 17:25 UTCJul 17, 17:40 UTC15m
2026-07-16 CAV239 YUT → YRT Jul 16, 23:49 UTCJul 17, 00:25 UTC35m
2026-07-16 CAV238 YRT → YUT Jul 16, 21:10 UTCJul 16, 21:50 UTC40m
2026-07-16 CAV213 - Jul 16, 19:14 UTCJul 16, 19:30 UTC15m
2026-07-16 CAV212 YRT → YEK Jul 16, 17:40 UTCJul 16, 17:54 UTC15m
2026-07-16 CAV221 - Jul 16, 14:05 UTCJul 16, 14:29 UTC25m
2026-07-16 CAV228 - Jul 16, 00:50 UTCJul 16, 01:20 UTC30m
2026-07-15 CAV2351 - Jul 15, 22:05 UTCJul 15, 22:40 UTC35m
2026-07-15 CAV2341 YRT → YUT Jul 15, 19:35 UTCJul 15, 20:15 UTC40m

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 C-FJYW page for operator, model, and routing details .

Mode-S C01A4B frequently asked

What is Mode-S code C01A4B?
C01A4B is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FJYW.
Where is Mode-S C01A4B registered?
Mode-S code C01A4B is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C01A4B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C01A4B, octal 60015113, decimal 12,589,643.
What flights does C01A4B operate?
Mode-S C01A4B has broadcast 20 distinct callsigns, including CAV221, CAV211, CAV225, CAV224, CAV228.