Apparatus

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sensors Mode-S transponder

7C66DC

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C66DC
Octal
37063334
Decimal
8,152,796
Country
AU
Tail
VH-ULQ
Type
E190
Broadcasting now · callsign JTE946 · 10,800 ft
Flights observed
101
Distinct callsigns
20
Country
AU
Last broadcast
4d ago

Current position

7C66DC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C66DC 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
JTE151 - 13 2026-07-22
JTE150 - 10 2026-07-21
JTE983 - 7 2026-07-16
JTE981 - 7 2026-07-22
JTE953 - 7 2026-07-17
JTE5670 - 7 2026-07-19
JTE980 - 6 2026-07-15
JTE1995 - 5 2026-06-22
JTE982 - 4 2026-07-23
JTE947 - 3 2026-06-16
JTE946 - 3 2026-06-23
JTE817 National Jet Express 3 2026-07-21
JTE816 National Jet Express 3 2026-07-21
JTE763 - 3 2026-07-20
JTE5671 - 3 2026-07-12
JTE1990 - 3 2026-06-15
JTE753 - 2 2026-07-14
JTE751 National Jet Express 2 2026-05-18
JTE750 National Jet Express 2 2026-05-17
JTE944 - 1 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 JTE982 PER → PER Jul 23, 04:10 UTCJul 23, 07:55 UTC3h 45m
2026-07-22 JTE981 PER → PER Jul 22, 21:40 UTCJul 23, 00:45 UTC3h 5m
2026-07-22 JTE151 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 JTE150 - Jul 21, 22:55 UTCJul 21, 23:40 UTC45m
2026-07-21 JTE817 KGI → PER Jul 21, 08:05 UTCJul 21, 09:15 UTC1h 10m
2026-07-21 JTE816 PER → KGI Jul 21, 06:20 UTCJul 21, 07:15 UTC55m
2026-07-20 JTE763 PER → PER Jul 20, 23:30 UTCJul 21, 02:25 UTC2h 54m
2026-07-19 JTE5670 PER → PER Jul 19, 21:50 UTCJul 20, 06:45 UTC8h 55m
2026-07-17 JTE953 PER → PER Jul 17, 02:34 UTCJul 17, 08:30 UTC5h 55m
2026-07-16 JTE983 PER → PER Jul 16, 04:10 UTCJul 16, 08:20 UTC4h 10m
2026-07-15 JTE980 PER → PER Jul 15, 21:45 UTCJul 16, 00:35 UTC2h 50m
2026-07-15 JTE151 - Jul 15, 09:20 UTCJul 15, 10:35 UTC1h 15m
2026-07-14 JTE150 - Jul 14, 22:55 UTCJul 14, 23:35 UTC40m
2026-07-14 JTE753 PER → PER Jul 14, 07:50 UTCJul 14, 12:25 UTC4h 35m
2026-07-14 JTE251 PER → PER Jul 14, 01:45 UTCJul 14, 06:25 UTC4h 40m
2026-07-12 JTE5671 PER → PER Jul 12, 21:40 UTCJul 13, 06:40 UTC9h 0m
2026-07-09 JTE953 PER → PER Jul 9, 23:10 UTCJul 10, 08:45 UTC9h 35m
2026-07-09 JTE479 PER → PER Jul 9, 00:05 UTCJul 9, 09:40 UTC9h 35m
2026-07-07 JTE151 PER → PER Jul 7, 22:50 UTCJul 8, 10:30 UTC11h 40m
2026-07-07 JTE817 - Jul 7, 07:55 UTCJul 7, 08:55 UTC1h 0m
2026-07-07 JTE816 PER → KGI Jul 7, 06:15 UTCJul 7, 07:05 UTC50m
2026-07-06 JTE763 PER → PER Jul 6, 23:05 UTCJul 7, 01:50 UTC2h 45m
2026-07-05 JTE5670 PER → PER Jul 5, 21:30 UTCJul 6, 06:45 UTC9h 15m
2026-07-02 JTE953 PER → PER Jul 2, 23:50 UTCJul 3, 08:15 UTC8h 25m
2026-07-02 JTE983 PER → PER Jul 2, 04:10 UTCJul 2, 08:15 UTC4h 5m
2026-07-01 JTE980 PER → PER Jul 1, 21:40 UTCJul 2, 00:30 UTC2h 50m
2026-07-01 JTE151 - Jul 1, 09:25 UTCJul 1, 10:30 UTC1h 5m
2026-07-01 JTE158 - Jul 1, 07:30 UTCJul 1, 08:10 UTC40m
2026-07-01 JTE159 - Jul 1, 01:35 UTCJul 1, 03:25 UTC1h 50m
2026-06-30 JTE150 - Jun 30, 23:20 UTCJul 1, 00:05 UTC45m
2026-06-30 JTE817 KGI → PER Jun 30, 07:50 UTCJun 30, 08:50 UTC1h 0m
2026-06-30 JTE816 PER → KGI Jun 30, 06:10 UTCJun 30, 07:00 UTC50m
2026-06-29 JTE763 PER → PER Jun 29, 23:09 UTCJun 30, 02:35 UTC3h 26m
2026-06-28 JTE5671 PER → PER Jun 28, 21:50 UTCJun 29, 06:14 UTC8h 25m
2026-06-25 JTE953 PER → PER Jun 25, 23:30 UTCJun 26, 08:20 UTC8h 50m
2026-06-25 JTE983 PER → PER Jun 25, 04:10 UTCJun 25, 08:20 UTC4h 10m
2026-06-24 JTE981 PER → PER Jun 24, 21:40 UTCJun 25, 00:59 UTC3h 20m
2026-06-23 JTE151 PER → PER Jun 23, 23:14 UTCJun 24, 10:35 UTC11h 20m
2026-06-23 JTE946 PER → PER Jun 23, 07:09 UTCJun 23, 09:59 UTC2h 50m
2026-06-22 JTE1995 PER → PER Jun 22, 22:34 UTCJun 23, 05:45 UTC7h 10m
2026-06-21 JTE5670 PER → PER Jun 21, 21:44 UTCJun 22, 06:05 UTC8h 20m
2026-06-18 JTE982 PER → PER Jun 18, 04:05 UTCJun 18, 08:00 UTC3h 55m
2026-06-17 JTE981 PER → PER Jun 17, 21:40 UTCJun 18, 00:40 UTC3h 0m
2026-06-16 JTE151 PER → PER Jun 16, 23:05 UTCJun 17, 10:25 UTC11h 20m
2026-06-16 JTE947 PER → PER Jun 16, 07:30 UTCJun 16, 10:45 UTC3h 15m
2026-06-15 JTE1990 PER → PER Jun 15, 22:10 UTCJun 16, 05:34 UTC7h 25m
2026-06-14 JTE5670 PER → PER Jun 14, 21:40 UTCJun 15, 05:45 UTC8h 5m
2026-06-11 JTE983 PER → PER Jun 11, 04:10 UTCJun 11, 08:25 UTC4h 15m
2026-06-10 JTE981 PER → PER Jun 10, 22:00 UTCJun 11, 01:15 UTC3h 15m
2026-06-10 JTE151 - Jun 10, 09:20 UTCJun 10, 10:40 UTC1h 20m

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

Mode-S 7C66DC frequently asked

What is Mode-S code 7C66DC?
7C66DC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-ULQ.
Where is Mode-S 7C66DC registered?
Mode-S code 7C66DC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C66DC broadcasting right now?
Yes. Mode-S 7C66DC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C66DC, octal 37063334, decimal 8,152,796.
What flights does 7C66DC operate?
Mode-S 7C66DC has broadcast 20 distinct callsigns, including JTE151, JTE150, JTE983, JTE981, JTE953.