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sensors Mode-S transponder

34738C

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to HU.26-29A · AIRBUS HELICOPTERS EC-135/635

Hex
34738C
Octal
15071614
Decimal
3,437,452
Country
ES
Tail
HU.26-29A
Type
EC35
No current signal · last broadcast 18h ago
Flights observed
91
Distinct callsigns
6
Country
ES
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 34738C.

Country allocation

The ICAO 24-bit address 34738C falls within the block assigned to Spain (ES) by ICAO Annex 10, Volume III. Every aircraft registered in Spain 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 6 distinct

Callsign Airline Flights Last seen
ANGEL07 - 59 2026-07-13
CUCO315 - 13 2026-07-03
NIVAL06 - 10 2026-07-09
CUC0315 - 6 2026-06-16
AME8609 - 2 2026-07-08
NIVAL04 - 1 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ANGEL07 - Jul 13, 10:35 UTCJul 13, 11:10 UTC35m
2026-07-13 ANGEL07 - Jul 13, 07:25 UTCJul 13, 07:40 UTC15m
2026-07-13 ANGEL07 - Jul 13, 06:15 UTCJul 13, 07:20 UTC1h 5m
2026-07-09 ANGEL07 - Jul 9, 09:10 UTCJul 9, 09:20 UTC10m
2026-07-09 NIVAL06 - Jul 9, 00:05 UTCJul 9, 00:30 UTC25m
2026-07-08 AME8609 - Jul 8, 19:05 UTCJul 8, 19:30 UTC25m
2026-07-06 ANGEL07 - Jul 6, 11:15 UTCJul 6, 11:45 UTC30m
2026-07-06 ANGEL07 - Jul 6, 07:35 UTCJul 6, 08:10 UTC35m
2026-07-03 CUCO315 - Jul 3, 09:00 UTCJul 3, 09:25 UTC25m
2026-07-03 ANGEL07 - Jul 3, 06:45 UTCJul 3, 07:00 UTC15m
2026-07-02 CUCO315 - Jul 2, 07:55 UTCJul 2, 08:55 UTC1h 0m
2026-07-01 AME8609 - Jul 1, 14:15 UTCJul 1, 14:35 UTC20m
2026-07-01 ANGEL07 - Jul 1, 09:10 UTCJul 1, 09:55 UTC45m
2026-07-01 ANGEL07 - Jul 1, 07:45 UTCJul 1, 09:05 UTC1h 20m
2026-06-30 CUCO315 - Jun 30, 14:50 UTCJun 30, 15:30 UTC40m
2026-06-30 CUCO315 - Jun 30, 10:10 UTCJun 30, 10:20 UTC10m
2026-06-30 CUCO315 - Jun 30, 07:55 UTCJun 30, 08:15 UTC20m
2026-06-27 CUCO315 - Jun 27, 18:04 UTCJun 27, 18:39 UTC35m
2026-06-27 CUCO315 - Jun 27, 16:10 UTCJun 27, 16:55 UTC45m
2026-06-25 CUCO315 - Jun 25, 07:45 UTCJun 25, 07:59 UTC15m
2026-06-24 ANGEL07 - Jun 24, 17:40 UTCJun 24, 19:24 UTC1h 45m
2026-06-24 ANGEL07 - Jun 24, 10:45 UTCJun 24, 10:59 UTC15m
2026-06-24 ANGEL07 - Jun 24, 09:55 UTCJun 24, 10:39 UTC45m
2026-06-24 ANGEL07 - Jun 24, 09:19 UTCJun 24, 09:49 UTC30m
2026-06-23 ANGEL07 - Jun 23, 17:50 UTCJun 23, 19:34 UTC1h 45m
2026-06-23 ANGEL07 - Jun 23, 09:49 UTCJun 23, 11:29 UTC1h 40m
2026-06-22 CUCO315 - Jun 22, 08:54 UTCJun 22, 09:34 UTC40m
2026-06-22 CUCO315 - Jun 22, 07:49 UTCJun 22, 08:19 UTC30m
2026-06-20 CUCO315 - Jun 20, 08:29 UTCJun 20, 08:44 UTC15m
2026-06-19 CUCO315 - Jun 19, 10:35 UTCJun 19, 11:09 UTC35m
2026-06-19 CUCO315 - Jun 19, 08:54 UTCJun 19, 08:59 UTC5m
2026-06-18 ANGEL07 - Jun 18, 07:40 UTCJun 18, 12:20 UTC4h 40m
2026-06-17 ANGEL07 - Jun 17, 17:25 UTCJun 17, 17:35 UTC10m
2026-06-17 ANGEL07 - Jun 17, 16:20 UTCJun 17, 16:50 UTC30m
2026-06-16 ANGEL07 - Jun 16, 11:10 UTCJun 16, 11:45 UTC35m
2026-06-16 CUC0315 - Jun 16, 08:15 UTCJun 16, 10:04 UTC1h 50m
2026-06-16 ANGEL07 - Jun 16, 06:45 UTCJun 16, 07:15 UTC30m
2026-06-12 ANGEL07 IBZ → PMI Jun 12, 12:35 UTCJun 12, 13:15 UTC40m
2026-06-12 ANGEL07 - Jun 12, 06:45 UTCJun 12, 07:30 UTC45m
2026-06-10 ANGEL07 - Jun 10, 16:35 UTCJun 10, 17:30 UTC55m
2026-06-10 ANGEL07 - Jun 10, 14:15 UTCJun 10, 15:40 UTC1h 25m
2026-06-10 CUC0315 - Jun 10, 10:15 UTCJun 10, 11:15 UTC1h 0m
2026-06-10 CUC0315 - Jun 10, 05:35 UTCJun 10, 05:50 UTC15m
2026-06-08 ANGEL07 - Jun 8, 16:25 UTCJun 8, 17:50 UTC1h 25m
2026-06-08 ANGEL07 - Jun 8, 10:25 UTCJun 8, 11:15 UTC50m
2026-06-08 ANGEL07 - Jun 8, 08:20 UTCJun 8, 09:40 UTC1h 20m
2026-06-07 ANGEL07 - Jun 7, 18:00 UTCJun 7, 19:55 UTC1h 55m
2026-06-07 ANGEL07 - Jun 7, 15:10 UTCJun 7, 16:50 UTC1h 40m
2026-06-07 ANGEL07 - Jun 7, 10:50 UTCJun 7, 11:05 UTC15m
2026-06-06 ANGEL07 - Jun 6, 18:45 UTCJun 6, 19:10 UTC25m

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 HU.26-29A page for operator, model, and routing details .

Mode-S 34738C frequently asked

What is Mode-S code 34738C?
34738C is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to HU.26-29A.
Where is Mode-S 34738C registered?
Mode-S code 34738C is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 34738C broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 34738C, octal 15071614, decimal 3,437,452.
What flights does 34738C operate?
Mode-S 34738C has broadcast 6 distinct callsigns, including ANGEL07, CUCO315, NIVAL06, CUC0315, AME8609.