Apparatus

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sensors Mode-S transponder

C0635C

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GLQH · DE HAVILLAND DHC-8-400 Dash 8 · operated by Porter Airlines Inc.

Hex
C0635C
Octal
60061534
Decimal
12,608,348
Country
CA
Tail
C-GLQH
Type
DH8D
Broadcasting now · callsign PTR2267 · 23,000 ft
Flights observed
79
Distinct callsigns
20
Country
CA
Last broadcast
2h ago

Current position

C0635C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C0635C 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
PTR2637 Nova Scotia Department of Lands and Forests 4 2026-05-28
PTR2635 Nova Scotia Department of Lands and Forests 3 2026-05-25
PTR2294 Nova Scotia Department of Lands and Forests 3 2026-05-25
PTR2636 Nova Scotia Department of Lands and Forests 2 2026-05-25
PTR2632 Nova Scotia Department of Lands and Forests 2 2026-05-29
PTR2494 - 2 2026-05-28
PTR2492 - 2 2026-05-27
PTR2486 - 2 2026-05-23
PTR2485 Nova Scotia Department of Lands and Forests 2 2026-05-22
PTR2431 - 2 2026-05-26
PTR2426 - 2 2026-05-27
PTR2374 - 2 2026-05-27
PTR2373 Nova Scotia Department of Lands and Forests 2 2026-05-27
PTR2325 - 2 2026-05-28
PTR2324 Nova Scotia Department of Lands and Forests 2 2026-05-28
PTR2283 Nova Scotia Department of Lands and Forests 2 2026-05-26
PTR2258 - 2 2026-05-28
PTR2196 - 2 2026-05-26
PTR2195 - 2 2026-05-26
PTR2947 Nova Scotia Department of Lands and Forests 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 PTR2946 YTZ → BOS May 29, 21:45 UTCMay 29, 23:00 UTC1h 15m
2026-05-29 PTR2947 BOS → YTZ May 29, 19:10 UTCMay 29, 20:50 UTC1h 40m
2026-05-29 PTR2466 YTZ → YUL May 29, 17:05 UTCMay 29, 18:00 UTC55m
2026-05-29 PTR2463 YTZ → YUL May 29, 15:05 UTCMay 29, 16:05 UTC1h 0m
2026-05-29 PTR2632 YTZ → YQT May 29, 12:20 UTCMay 29, 14:00 UTC1h 40m
2026-05-28 PTR2637 YTZ → YQT May 28, 23:00 UTCMay 28, 23:25 UTC25m
2026-05-28 PTR2637 YTZ → YQT May 28, 21:30 UTCMay 28, 22:20 UTC50m
2026-05-28 PTR2258 - May 28, 19:40 UTCMay 28, 20:20 UTC40m
2026-05-28 PTR2494 - May 28, 16:45 UTCMay 28, 18:30 UTC1h 45m
2026-05-28 PTR2325 - May 28, 13:50 UTCMay 28, 15:15 UTC1h 25m
2026-05-28 PTR2324 EWR → YOW May 28, 11:10 UTCMay 28, 12:50 UTC1h 40m
2026-05-28 PTR2499 - May 28, 01:00 UTCMay 28, 02:30 UTC1h 30m
2026-05-27 PTR2374 - May 27, 21:55 UTCMay 27, 23:40 UTC1h 45m
2026-05-27 PTR2373 YQM → YOW May 27, 19:40 UTCMay 27, 20:50 UTC1h 10m
2026-05-27 PTR2492 - May 27, 16:35 UTCMay 27, 18:35 UTC2h 0m
2026-05-27 PTR2426 - May 27, 14:30 UTCMay 27, 15:15 UTC45m
2026-05-26 PTR2431 - May 26, 21:04 UTCMay 26, 21:49 UTC45m
2026-05-26 PTR2196 - May 26, 19:05 UTCMay 26, 19:45 UTC40m
2026-05-26 PTR2195 - May 26, 16:20 UTCMay 26, 16:59 UTC40m
2026-05-26 PTR2283 YHZ → YTZ May 26, 13:15 UTCMay 26, 15:14 UTC2h 0m
2026-05-25 PTR2636 YTZ → YQT May 25, 21:30 UTCMay 25, 23:04 UTC1h 35m
2026-05-25 PTR2635 YTZ → YQT May 25, 18:40 UTCMay 25, 20:30 UTC1h 49m
2026-05-25 PTR2720 IAD → YTZ May 25, 15:30 UTCMay 25, 16:35 UTC1h 5m
2026-05-25 PTR2719 YTZ → IAD May 25, 13:25 UTCMay 25, 14:25 UTC1h 0m
2026-05-25 PTR2294 YQM → YTZ May 25, 09:40 UTCMay 25, 11:30 UTC1h 50m
2026-05-25 PTR2294 YQM → YTZ May 25, 09:20 UTCMay 25, 09:35 UTC15m
2026-05-23 PTR2346 YOW → BOS May 23, 19:25 UTCMay 23, 20:30 UTC1h 5m
2026-05-23 PTR2945 BOS → YTZ May 23, 17:15 UTCMay 23, 18:25 UTC1h 11m
2026-05-23 PTR2460 YTZ → YUL May 23, 14:40 UTCMay 23, 15:45 UTC1h 5m
2026-05-23 PTR2461 YHZ → YYT May 23, 12:30 UTCMay 23, 13:25 UTC55m
2026-05-23 PTR2486 YUL → YTZ May 23, 00:55 UTCMay 23, 01:55 UTC1h 0m
2026-05-22 PTR2485 YTZ → YUL May 22, 23:00 UTCMay 22, 23:55 UTC55m
2026-05-22 PTR2682 YTZ → YAM May 22, 20:45 UTCMay 22, 21:30 UTC45m
2026-05-22 PTR2691 YTZ → YAM May 22, 18:15 UTCMay 22, 19:10 UTC55m
2026-05-22 PTR2248 YOW → YTZ May 22, 14:55 UTCMay 22, 15:40 UTC45m
2026-05-22 PTR2205 YHZ → YYT May 22, 12:30 UTCMay 22, 13:10 UTC40m
2026-05-22 PTR2304 YTZ → YFC May 22, 09:45 UTCMay 22, 11:45 UTC2h 0m
2026-05-21 PTR2317 - May 21, 23:30 UTCMay 22, 00:25 UTC55m
2026-05-21 PTR2259 YTZ → YOW May 21, 21:00 UTCMay 21, 21:45 UTC45m
2026-05-21 PTR2130 EWR → YTZ May 21, 17:40 UTCMay 21, 18:50 UTC1h 10m
2026-05-21 PTR2129 - May 21, 15:20 UTCMay 21, 16:25 UTC1h 5m
2026-05-21 PTR2632 YTZ → YQT May 21, 12:20 UTCMay 21, 13:55 UTC1h 35m
2026-05-20 PTR2637 YTZ → YQT May 20, 23:10 UTCMay 20, 23:30 UTC20m
2026-05-20 PTR2637 YTZ → YQT May 20, 21:35 UTCMay 20, 22:30 UTC55m
2026-05-20 PTR2388 YTZ → MDW May 20, 15:50 UTCMay 20, 17:10 UTC1h 20m
2026-05-20 PTR2387 MDW → YTZ May 20, 13:05 UTCMay 20, 14:45 UTC1h 40m
2026-05-19 PTR2258 - May 19, 19:40 UTCMay 19, 20:25 UTC45m
2026-05-19 PTR2494 - May 19, 16:45 UTCMay 19, 18:40 UTC1h 55m
2026-05-19 PTR2325 - May 19, 13:45 UTCMay 19, 15:05 UTC1h 20m
2026-05-19 PTR2324 EWR → YOW May 19, 11:05 UTCMay 19, 12:45 UTC1h 40m

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

Mode-S C0635C frequently asked

What is Mode-S code C0635C?
C0635C is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GLQH.
Where is Mode-S C0635C registered?
Mode-S code C0635C is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0635C broadcasting right now?
Yes. Mode-S C0635C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0635C, octal 60061534, decimal 12,608,348.
What flights does C0635C operate?
Mode-S C0635C has broadcast 20 distinct callsigns, including PTR2637, PTR2635, PTR2294, PTR2636, PTR2632.