Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7C1AC1

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FKJ · FOKKER 100 · operated by ALLIANCE AIRLINES PTY LIMITED

Hex
7C1AC1
Octal
37015301
Decimal
8,133,313
Country
AU
Tail
VH-FKJ
Type
F100
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
125
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 7C1AC1.

Country allocation

The ICAO 24-bit address 7C1AC1 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
UTY6527 - 7 2026-07-23
UTY6520 - 7 2026-07-26
UTY6526 - 6 2026-07-13
UTY6521 - 6 2026-07-23
UTY731 - 5 2026-07-13
UTY878 - 4 2026-06-02
UTY870 - 4 2026-07-23
UTY956 - 3 2026-07-14
UTY753 Alliance Airlines 3 2026-04-22
UTY752 Alliance Airlines 3 2026-04-22
UTY737 - 3 2026-06-30
UTY733 - 3 2026-07-21
UTY6508 - 3 2026-05-21
UTY6507 - 3 2026-07-17
UTY6302 - 3 2026-07-08
UTY5204 - 3 2026-05-20
VOZ9063 - 2 2026-04-17
UTY802 Alliance Airlines 2 2026-06-01
UTY751 - 2 2026-07-16
UTY750 - 2 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UTY6520 - Jul 26, 21:55 UTCJul 26, 22:15 UTC20m
2026-07-23 UTY870 PER → PER Jul 23, 22:45 UTCJul 24, 10:00 UTC11h 15m
2026-07-23 UTY6527 PER → PER Jul 23, 06:55 UTCJul 23, 10:00 UTC3h 5m
2026-07-23 UTY6521 - Jul 23, 00:15 UTCJul 23, 01:10 UTC55m
2026-07-22 UTY6520 - Jul 22, 22:05 UTCJul 22, 22:55 UTC50m
2026-07-22 UTY738 KTA → PER Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-21 UTY733 PER → PER Jul 21, 23:15 UTCJul 22, 03:55 UTC4h 40m
2026-07-21 UTY735 PER → PER Jul 21, 06:20 UTCJul 21, 10:40 UTC4h 20m
2026-07-20 UTY6520 PER → PER Jul 20, 22:00 UTCJul 21, 00:55 UTC2h 54m
2026-07-17 UTY6507 PER → PER Jul 17, 07:30 UTCJul 17, 10:55 UTC3h 25m
2026-07-16 UTY6504 PER → PER Jul 16, 23:44 UTCJul 17, 03:05 UTC3h 20m
2026-07-16 UTY751 KGI → PER Jul 16, 01:25 UTCJul 16, 02:45 UTC1h 20m
2026-07-15 UTY750 PER → KGI Jul 15, 23:10 UTCJul 16, 00:05 UTC55m
2026-07-14 UTY6527 PER → PER Jul 14, 21:55 UTCJul 15, 10:15 UTC12h 19m
2026-07-14 UTY956 PER → PER Jul 14, 06:30 UTCJul 14, 09:45 UTC3h 15m
2026-07-13 UTY731 PER → PER Jul 13, 21:40 UTCJul 14, 02:35 UTC4h 55m
2026-07-13 UTY6526 PER → PER Jul 13, 06:50 UTCJul 13, 09:55 UTC3h 5m
2026-07-13 UTY6521 - Jul 13, 00:05 UTCJul 13, 01:05 UTC1h 0m
2026-07-12 UTY6520 - Jul 12, 22:05 UTCJul 12, 22:55 UTC50m
2026-07-09 UTY731 PER → PER Jul 9, 21:35 UTCJul 10, 01:55 UTC4h 20m
2026-07-08 UTY731 PER → PER Jul 8, 21:40 UTCJul 9, 02:50 UTC5h 10m
2026-07-08 UTY6303 KGI → PER Jul 8, 11:35 UTCJul 8, 12:35 UTC1h 0m
2026-07-08 UTY6302 PER → KGI Jul 8, 09:20 UTCJul 8, 10:10 UTC50m
2026-07-02 UTY2286 PER → PER Jul 2, 22:30 UTCJul 3, 02:25 UTC3h 55m
2026-07-02 UTY6527 PER → PER Jul 2, 06:55 UTCJul 2, 10:05 UTC3h 10m
2026-07-02 UTY6521 - Jul 2, 00:00 UTCJul 2, 00:55 UTC55m
2026-07-01 UTY6520 - Jul 1, 22:00 UTCJul 1, 22:50 UTC50m
2026-07-01 UTY6311 KGI → PER Jul 1, 11:15 UTCJul 1, 12:25 UTC1h 10m
2026-07-01 UTY6302 PER → KGI Jul 1, 09:15 UTCJul 1, 10:10 UTC55m
2026-07-01 UTY6362 PER → PER Jul 1, 02:55 UTCJul 1, 07:05 UTC4h 10m
2026-06-30 UTY737 PER → PER Jun 30, 06:55 UTCJun 30, 11:45 UTC4h 50m
2026-06-29 UTY870 PER → PER Jun 29, 22:55 UTCJun 30, 03:50 UTC4h 56m
2026-06-21 UTY6070 PER → CJF Jun 21, 22:54 UTCJun 22, 02:59 UTC4h 5m
2026-06-15 UTY6526 PER → PER Jun 15, 06:40 UTCJun 15, 09:49 UTC3h 10m
2026-06-14 UTY6040 PER → PER Jun 14, 23:39 UTCJun 15, 03:40 UTC4h 0m
2026-06-12 UTY6506 PER → PER Jun 12, 07:35 UTCJun 12, 10:30 UTC2h 55m
2026-06-11 UTY2286 PER → PER Jun 11, 22:45 UTCJun 12, 03:00 UTC4h 16m
2026-06-11 UTY6526 PER → PER Jun 11, 07:20 UTCJun 11, 10:45 UTC3h 25m
2026-06-10 UTY6521 KGI → PER Jun 10, 23:55 UTCJun 11, 01:10 UTC1h 15m
2026-06-10 UTY6520 - Jun 10, 22:00 UTCJun 10, 22:50 UTC50m
2026-06-10 UTY6081 BQB → PER Jun 10, 08:40 UTCJun 10, 09:05 UTC25m
2026-06-10 UTY6080 BQB → BQB Jun 10, 01:30 UTCJun 10, 08:00 UTC6h 30m
2026-06-10 UTY6080 PER → BQB Jun 10, 00:10 UTCJun 10, 00:45 UTC35m
2026-06-09 UTY956 PER → LNO Jun 9, 06:25 UTCJun 9, 09:40 UTC3h 15m
2026-06-08 UTY731 PER → PER Jun 8, 21:40 UTCJun 9, 02:45 UTC5h 5m
2026-06-08 UTY6305 KGI → PER Jun 8, 09:55 UTCJun 8, 11:15 UTC1h 20m
2026-06-08 UTY6304 PER → KGI Jun 8, 07:35 UTCJun 8, 08:30 UTC55m
2026-06-03 UTY6307 KGI → PER Jun 3, 23:30 UTCJun 4, 00:35 UTC1h 5m
2026-06-03 UTY6306 PER → KGI Jun 3, 21:35 UTCJun 3, 22:25 UTC50m
2026-06-03 UTY6311 KGI → PER Jun 3, 11:15 UTCJun 3, 12:20 UTC1h 5m

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

Mode-S 7C1AC1 frequently asked

What is Mode-S code 7C1AC1?
7C1AC1 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FKJ.
Where is Mode-S 7C1AC1 registered?
Mode-S code 7C1AC1 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1AC1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1AC1, octal 37015301, decimal 8,133,313.
What flights does 7C1AC1 operate?
Mode-S 7C1AC1 has broadcast 20 distinct callsigns, including UTY6527, UTY6520, UTY6526, UTY6521, UTY731.