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sensors Mode-S transponder

7C66CD

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-ULB · EMBRAER ERJ-190-100 · operated by NATIONAL JET EXPRESS PTY LTD

Hex
7C66CD
Octal
37063315
Decimal
8,152,781
Country
AU
Tail
VH-ULB
Type
E190
No current signal · last broadcast 1d ago
Flights observed
115
Distinct callsigns
20
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C66CD.

Country allocation

The ICAO 24-bit address 7C66CD falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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
JTE105 - 20 2026-07-09
JTE759 - 12 2026-07-08
JTE153 - 9 2026-07-13
JTE152 - 8 2026-07-13
JTE123 - 8 2026-06-28
JTE122 - 8 2026-07-12
JTE832 - 4 2026-07-08
JTE104 - 4 2026-07-02
JTE833 - 3 2026-06-17
JTE758 National Jet Express 3 2026-06-10
JTE757 National Jet Express 3 2026-06-03
JTE942 - 2 2026-04-14
JTE817 National Jet Express 2 2026-05-26
JTE816 National Jet Express 2 2026-05-26
JTE807 National Jet Express 2 2026-05-28
JTE806 National Jet Express 2 2026-05-28
JTE755 - 2 2026-07-01
JTE473 - 2 2026-07-06
JTE3872 - 2 2026-05-14
JTE1990 - 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JTE153 - Jul 13, 09:20 UTCJul 13, 10:25 UTC1h 5m
2026-07-13 JTE152 - Jul 13, 07:01 UTCJul 13, 07:40 UTC40m
2026-07-12 JTE122 PER → PER Jul 12, 21:30 UTCJul 13, 01:50 UTC4h 20m
2026-07-09 JTE105 PER → PER Jul 9, 22:45 UTCJul 10, 09:55 UTC11h 10m
2026-07-08 JTE759 PER → PER Jul 8, 23:20 UTCJul 9, 02:10 UTC2h 50m
2026-07-08 JTE832 PER → PER Jul 8, 00:20 UTCJul 8, 03:20 UTC3h 0m
2026-07-06 JTE105 PER → PER Jul 6, 23:20 UTCJul 7, 10:55 UTC11h 35m
2026-07-06 JTE473 KGI → PER Jul 6, 07:15 UTCJul 6, 08:10 UTC55m
2026-07-06 JTE473 - Jul 6, 05:50 UTCJul 6, 06:05 UTC15m
2026-07-06 JTE472 - Jul 6, 03:10 UTCJul 6, 04:00 UTC50m
2026-07-05 JTE122 PER → PER Jul 5, 21:45 UTCJul 6, 02:10 UTC4h 25m
2026-07-02 JTE104 PER → PER Jul 2, 22:55 UTCJul 3, 09:50 UTC10h 55m
2026-07-01 JTE759 PER → PER Jul 1, 23:00 UTCJul 2, 01:45 UTC2h 45m
2026-07-01 JTE755 - Jul 1, 01:35 UTCJul 1, 02:55 UTC1h 20m
2026-06-30 JTE754 - Jun 30, 23:40 UTCJul 1, 00:10 UTC30m
2026-06-29 JTE105 PER → PER Jun 29, 23:19 UTCJun 30, 11:25 UTC12h 6m
2026-06-28 JTE123 PER → PER Jun 28, 21:40 UTCJun 29, 02:09 UTC4h 30m
2026-06-25 JTE105 PER → PER Jun 25, 22:59 UTCJun 26, 10:05 UTC11h 5m
2026-06-25 JTE759 PER → PER Jun 25, 00:59 UTCJun 25, 04:49 UTC3h 50m
2026-06-24 JTE105 PER → PER Jun 24, 01:34 UTCJun 24, 10:45 UTC9h 10m
2026-06-22 JTE104 PER → PER Jun 22, 23:50 UTCJun 23, 11:40 UTC11h 50m
2026-06-22 JTE153 - Jun 22, 09:14 UTCJun 22, 10:19 UTC1h 5m
2026-06-22 JTE152 - Jun 22, 07:00 UTCJun 22, 07:49 UTC50m
2026-06-21 JTE123 PER → PER Jun 21, 21:34 UTCJun 22, 02:14 UTC4h 40m
2026-06-17 JTE759 WUI → PER Jun 17, 23:05 UTCJun 18, 01:45 UTC2h 40m
2026-06-17 JTE833 PER → PER Jun 17, 00:15 UTCJun 17, 03:50 UTC3h 35m
2026-06-15 JTE105 PER → PER Jun 15, 23:19 UTCJun 16, 11:20 UTC12h 0m
2026-06-15 JTE153 PER → PER Jun 15, 07:00 UTCJun 15, 10:24 UTC3h 25m
2026-06-15 JTE165 PER → PER Jun 15, 02:55 UTCJun 15, 05:45 UTC2h 50m
2026-06-14 JTE122 PER → PER Jun 14, 21:25 UTCJun 15, 01:50 UTC4h 24m
2026-06-11 JTE105 PER → PER Jun 11, 22:45 UTCJun 12, 10:20 UTC11h 36m
2026-06-11 JTE759 WUI → PER Jun 11, 00:55 UTCJun 11, 02:10 UTC1h 15m
2026-06-10 JTE758 PER → WUI Jun 10, 23:10 UTCJun 10, 23:50 UTC40m
2026-06-09 JTE755 WUI → PER Jun 9, 23:15 UTCJun 10, 02:10 UTC2h 55m
2026-06-08 JTE105 PER → PER Jun 8, 23:15 UTCJun 9, 11:10 UTC11h 55m
2026-06-08 JTE153 PER → PER Jun 8, 07:05 UTCJun 8, 10:55 UTC3h 50m
2026-06-07 JTE123 PER → PER Jun 7, 21:35 UTCJun 8, 02:55 UTC5h 20m
2026-06-04 JTE105 PER → PER Jun 4, 22:40 UTCJun 5, 09:50 UTC11h 10m
2026-06-04 JTE983 PER → PER Jun 4, 04:00 UTCJun 4, 08:00 UTC4h 0m
2026-06-03 JTE759 WUI → PER Jun 3, 23:10 UTCJun 4, 02:05 UTC2h 55m
2026-06-03 JTE757 WUI → PER Jun 3, 07:00 UTCJun 3, 12:00 UTC5h 0m
2026-06-02 JTE985 PER → PER Jun 2, 22:40 UTCJun 3, 03:15 UTC4h 35m
2026-06-01 JTE105 PER → PER Jun 1, 23:30 UTCJun 2, 11:20 UTC11h 50m
2026-06-01 JTE153 - Jun 1, 09:05 UTCJun 1, 10:20 UTC1h 15m
2026-06-01 JTE152 - Jun 1, 06:50 UTCJun 1, 07:30 UTC40m
2026-05-31 JTE122 PER → PER May 31, 21:25 UTCJun 1, 01:40 UTC4h 15m
2026-05-28 JTE105 PER → PER May 28, 22:40 UTCMay 29, 09:40 UTC11h 0m
2026-05-28 JTE807 KGI → PER May 28, 06:25 UTCMay 28, 07:30 UTC1h 5m
2026-05-28 JTE806 PER → KGI May 28, 04:50 UTCMay 28, 05:35 UTC45m
2026-05-27 JTE759 WUI → PER May 27, 23:10 UTCMay 28, 02:05 UTC2h 55m

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 VH-ULB page for operator, model, and routing details .

Mode-S 7C66CD frequently asked

What is Mode-S code 7C66CD?
7C66CD is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-ULB.
Where is Mode-S 7C66CD registered?
Mode-S code 7C66CD is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C66CD broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C66CD, octal 37063315, decimal 8,152,781.
What flights does 7C66CD operate?
Mode-S 7C66CD has broadcast 20 distinct callsigns, including JTE105, JTE759, JTE153, JTE152, JTE123.