Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C058D4

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GHQP · DE HAVILLAND DHC-8-400 Dash 8 · operated by Hydro-Qubec

Hex
C058D4
Octal
60054324
Decimal
12,605,652
Country
CA
Tail
C-GHQP
Type
DH8D
Broadcasting now · callsign HYD170 · 12,825 ft
Flights observed
199
Distinct callsigns
19
Country
CA
Last broadcast
48m ago

Current position

C058D4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C058D4 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 19 distinct

Callsign Airline Flights Last seen
HYD144 - 27 2026-07-14
HYD164 - 21 2026-07-09
HYD165 - 19 2026-07-09
HYD170 - 18 2026-07-08
HYD102 - 18 2026-06-29
HYD145 - 17 2026-07-07
HYD171 - 15 2026-07-08
HYD107 - 14 2026-07-03
HYD106 - 14 2026-07-03
HYD103 - 9 2026-06-29
HYD311 - 4 2026-07-13
HYD310 - 4 2026-07-13
HYD400 - 2 2026-06-11
HYD351 - 2 2026-07-10
HYD181 - 2 2026-04-16
HYD146 - 2 2026-05-26
HYD402 - 1 2026-07-11
HYD350 - 1 2026-07-10
HYD180 - 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 - - Jul 15, 10:30 UTCJul 15, 11:00 UTC30m
2026-07-14 - - Jul 14, 21:00 UTCJul 14, 21:45 UTC45m
2026-07-14 - - Jul 14, 19:25 UTCJul 14, 20:15 UTC50m
2026-07-14 HYD144 - Jul 14, 13:30 UTCJul 14, 13:40 UTC10m
2026-07-14 HYD144 - Jul 14, 10:20 UTCJul 14, 11:15 UTC55m
2026-07-13 HYD311 - Jul 13, 16:25 UTCJul 13, 17:45 UTC1h 20m
2026-07-13 HYD310 - Jul 13, 11:15 UTCJul 13, 12:30 UTC1h 15m
2026-07-11 HYD402 YUL → YUL Jul 11, 15:05 UTCJul 11, 15:55 UTC50m
2026-07-10 HYD351 - Jul 10, 17:45 UTCJul 10, 18:15 UTC30m
2026-07-10 HYD351 - Jul 10, 16:50 UTCJul 10, 17:10 UTC20m
2026-07-10 HYD350 - Jul 10, 11:15 UTCJul 10, 12:30 UTC1h 15m
2026-07-09 HYD165 - Jul 9, 23:55 UTCJul 10, 00:45 UTC50m
2026-07-09 HYD165 - Jul 9, 20:05 UTCJul 9, 20:45 UTC40m
2026-07-09 HYD164 - Jul 9, 12:15 UTCJul 9, 13:00 UTC45m
2026-07-09 HYD164 - Jul 9, 10:45 UTCJul 9, 11:40 UTC55m
2026-07-08 HYD171 - Jul 8, 21:05 UTCJul 8, 22:15 UTC1h 10m
2026-07-08 HYD170 - Jul 8, 11:45 UTCJul 8, 12:00 UTC15m
2026-07-08 HYD170 - Jul 8, 10:40 UTCJul 8, 11:15 UTC35m
2026-07-07 HYD145 - Jul 7, 20:10 UTCJul 7, 21:05 UTC55m
2026-07-07 HYD144 - Jul 7, 11:55 UTCJul 7, 12:05 UTC10m
2026-07-07 HYD144 - Jul 7, 10:30 UTCJul 7, 11:20 UTC50m
2026-07-06 HYD311 - Jul 6, 16:35 UTCJul 6, 17:50 UTC1h 15m
2026-07-06 HYD310 - Jul 6, 11:25 UTCJul 6, 12:50 UTC1h 25m
2026-07-03 HYD107 - Jul 3, 19:40 UTCJul 3, 20:30 UTC50m
2026-07-03 HYD106 - Jul 3, 12:05 UTCJul 3, 12:35 UTC30m
2026-07-02 HYD165 - Jul 2, 22:00 UTCJul 2, 22:55 UTC55m
2026-07-02 HYD165 - Jul 2, 20:20 UTCJul 2, 21:05 UTC45m
2026-07-02 HYD164 - Jul 2, 11:40 UTCJul 2, 12:20 UTC40m
2026-07-02 HYD164 - Jul 2, 10:10 UTCJul 2, 11:05 UTC55m
2026-07-01 HYD171 - Jul 1, 20:10 UTCJul 1, 21:20 UTC1h 10m
2026-07-01 HYD170 - Jul 1, 12:40 UTCJul 1, 12:55 UTC15m
2026-07-01 HYD170 - Jul 1, 11:35 UTCJul 1, 11:50 UTC15m
2026-07-01 HYD170 - Jul 1, 10:30 UTCJul 1, 11:05 UTC35m
2026-06-30 HYD145 - Jun 30, 19:25 UTCJun 30, 20:40 UTC1h 15m
2026-06-30 HYD144 - Jun 30, 10:20 UTCJun 30, 11:10 UTC50m
2026-06-29 HYD103 - Jun 29, 20:15 UTCJun 29, 20:49 UTC35m
2026-06-29 HYD102 - Jun 29, 11:39 UTCJun 29, 13:14 UTC1h 35m
2026-06-26 HYD107 - Jun 26, 20:34 UTCJun 26, 21:30 UTC55m
2026-06-26 HYD106 - Jun 26, 11:55 UTCJun 26, 12:24 UTC30m
2026-06-25 - - Jun 25, 22:04 UTCJun 25, 22:59 UTC55m
2026-06-25 - - Jun 25, 20:05 UTCJun 25, 20:49 UTC45m
2026-06-25 HYD164 - Jun 25, 11:35 UTCJun 25, 12:15 UTC40m
2026-06-25 HYD164 - Jun 25, 10:04 UTCJun 25, 10:55 UTC50m
2026-06-24 HYD171 - Jun 24, 20:44 UTCJun 24, 21:40 UTC55m
2026-06-24 HYD170 - Jun 24, 10:35 UTCJun 24, 11:39 UTC1h 5m
2026-06-23 HYD145 - Jun 23, 20:10 UTCJun 23, 20:59 UTC50m
2026-06-23 HYD144 - Jun 23, 11:54 UTCJun 23, 12:05 UTC10m
2026-06-23 HYD144 - Jun 23, 10:19 UTCJun 23, 11:14 UTC55m
2026-06-22 HYD103 - Jun 22, 20:00 UTCJun 22, 20:55 UTC55m
2026-06-22 HYD102 - Jun 22, 11:39 UTCJun 22, 12:25 UTC45m

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

Mode-S C058D4 frequently asked

What is Mode-S code C058D4?
C058D4 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GHQP.
Where is Mode-S C058D4 registered?
Mode-S code C058D4 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C058D4 broadcasting right now?
Yes. Mode-S C058D4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C058D4, octal 60054324, decimal 12,605,652.
What flights does C058D4 operate?
Mode-S C058D4 has broadcast 19 distinct callsigns, including HYD144, HYD164, HYD165, HYD170, HYD102.