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sensors Mode-S transponder

C811DE

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-PDM · CESSNA 208 Caravan

Hex
C811DE
Octal
62010736
Decimal
13,111,774
Country
NZ
Tail
ZK-PDM
Type
C208
No current signal · last broadcast 1h ago
Flights observed
429
Distinct callsigns
20
Country
NZ
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C811DE.

Country allocation

The ICAO 24-bit address C811DE falls within the block assigned to New Zealand (NZ) by ICAO Annex 10, Volume III. Every aircraft registered in New Zealand 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
SDA349 - 14 2026-07-14
SDA345 - 14 2026-07-12
SDA341 - 14 2026-07-13
SDA281 Sounds Air 12 2026-06-13
SDA241 - 12 2026-07-13
SDA282 Sounds Air 11 2026-06-09
SDA348 - 10 2026-07-14
SDA347 - 10 2026-07-14
SDA287 Sounds Air 10 2026-06-09
SDA285 Sounds Air 10 2026-06-09
SDA280 - 10 2026-07-11
SDA350 - 9 2026-07-14
SDA343 - 9 2026-07-12
SDA342 - 9 2026-07-13
SDA289 Sounds Air 9 2026-06-09
SDA271 - 9 2026-07-10
SDA261 Sounds Air 9 2026-06-14
SDA123 - 9 2026-07-14
SDA413 - 8 2026-07-10
SDA346 - 8 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SDA350 - Jul 14, 08:10 UTCJul 14, 08:30 UTC20m
2026-07-14 SDA349 - Jul 14, 06:50 UTCJul 14, 07:10 UTC20m
2026-07-14 SDA348 - Jul 14, 05:30 UTCJul 14, 05:55 UTC25m
2026-07-14 SDA347 - Jul 14, 04:00 UTCJul 14, 04:30 UTC30m
2026-07-14 SDA123 - Jul 14, 02:00 UTCJul 14, 02:25 UTC25m
2026-07-13 SDA241 - Jul 13, 21:20 UTCJul 13, 22:20 UTC1h 0m
2026-07-13 SDA342 - Jul 13, 20:20 UTCJul 13, 20:45 UTC25m
2026-07-13 SDA341 - Jul 13, 18:05 UTCJul 13, 18:25 UTC20m
2026-07-13 SDA352 - Jul 13, 07:30 UTCJul 13, 07:55 UTC25m
2026-07-13 SDA351 - Jul 13, 06:10 UTCJul 13, 06:35 UTC25m
2026-07-13 SDA350 - Jul 13, 05:01 UTCJul 13, 05:20 UTC20m
2026-07-13 SDA349 - Jul 13, 03:40 UTCJul 13, 04:00 UTC20m
2026-07-13 SDA116 - Jul 13, 02:50 UTCJul 13, 03:15 UTC25m
2026-07-13 SDA115 WLG → BHE Jul 13, 01:55 UTCJul 13, 02:20 UTC25m
2026-07-12 SDA346 - Jul 12, 23:30 UTCJul 12, 23:50 UTC20m
2026-07-12 SDA345 - Jul 12, 22:15 UTCJul 12, 22:40 UTC25m
2026-07-12 SDA344 - Jul 12, 20:20 UTCJul 12, 20:45 UTC25m
2026-07-12 SDA343 - Jul 12, 19:05 UTCJul 12, 19:10 UTC5m
2026-07-12 SDA360 - Jul 12, 07:31 UTCJul 12, 07:55 UTC25m
2026-07-12 SDA359 - Jul 12, 06:05 UTCJul 12, 06:25 UTC20m
2026-07-12 SDA358 - Jul 12, 04:45 UTCJul 12, 05:10 UTC25m
2026-07-12 SDA357 - Jul 12, 03:35 UTCJul 12, 03:55 UTC20m
2026-07-12 SDA252 BHE → WLG Jul 12, 02:35 UTCJul 12, 02:55 UTC20m
2026-07-12 SDA251 WLG → BHE Jul 12, 00:40 UTCJul 12, 01:05 UTC25m
2026-07-11 SDA123 - Jul 11, 22:50 UTCJul 11, 23:10 UTC20m
2026-07-11 SDA280 - Jul 11, 21:25 UTCJul 11, 21:40 UTC15m
2026-07-11 SDA217 WLG → BHE Jul 11, 07:15 UTCJul 11, 07:30 UTC15m
2026-07-11 SDA348 - Jul 11, 06:10 UTCJul 11, 06:35 UTC25m
2026-07-11 SDA347 - Jul 11, 04:50 UTCJul 11, 05:10 UTC20m
2026-07-11 SDA346 - Jul 11, 03:30 UTCJul 11, 03:55 UTC25m
2026-07-11 SDA345 - Jul 11, 02:15 UTCJul 11, 02:35 UTC20m
2026-07-11 SDA214 - Jul 11, 01:15 UTCJul 11, 01:45 UTC30m
2026-07-11 SDA213 - Jul 11, 00:10 UTCJul 11, 00:30 UTC20m
2026-07-10 SDA318 - Jul 10, 23:25 UTCJul 10, 23:50 UTC25m
2026-07-10 SDA317 - Jul 10, 22:00 UTCJul 10, 22:25 UTC25m
2026-07-10 SDA212 - Jul 10, 20:55 UTCJul 10, 21:20 UTC25m
2026-07-10 SDA271 - Jul 10, 20:05 UTCJul 10, 20:25 UTC20m
2026-07-10 SDA270 BHE → WLG Jul 10, 19:10 UTCJul 10, 19:40 UTC30m
2026-07-10 SDA413 - Jul 10, 08:00 UTCJul 10, 08:20 UTC20m
2026-07-10 SDA502 - Jul 10, 07:00 UTCJul 10, 07:20 UTC20m
2026-07-10 SDA313 - Jul 10, 05:45 UTCJul 10, 06:05 UTC20m
2026-07-10 SDA312 - Jul 10, 04:30 UTCJul 10, 05:00 UTC30m
2026-07-10 SDA501 - Jul 10, 03:10 UTCJul 10, 03:35 UTC25m
2026-07-10 SDA412 - Jul 10, 02:10 UTCJul 10, 02:35 UTC25m
2026-06-15 SDA271 - Jun 15, 07:20 UTCJun 15, 07:29 UTC10m
2026-06-15 SDA270 BHE → WLG Jun 15, 06:40 UTCJun 15, 06:49 UTC10m
2026-06-15 SDA269 WLG → BHE Jun 15, 05:15 UTCJun 15, 05:25 UTC10m
2026-06-15 SDA268 BHE → WLG Jun 15, 04:40 UTCJun 15, 04:55 UTC15m
2026-06-15 SDA267 WLG → BHE Jun 15, 03:40 UTCJun 15, 03:50 UTC10m
2026-06-15 SDA266 - Jun 15, 03:10 UTCJun 15, 03:15 UTC5m

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 ZK-PDM page for operator, model, and routing details .

Mode-S C811DE frequently asked

What is Mode-S code C811DE?
C811DE is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-PDM.
Where is Mode-S C811DE registered?
Mode-S code C811DE is allocated to New Zealand (NZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C811DE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C811DE, octal 62010736, decimal 13,111,774.
What flights does C811DE operate?
Mode-S C811DE has broadcast 20 distinct callsigns, including SDA349, SDA345, SDA341, SDA281, SDA241.