Apparatus

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sensors Mode-S transponder

7C1AB8

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C1AB8
Octal
37015270
Decimal
8,133,304
Country
AU
Tail
VH-FKA
Type
F100
No current signal · last broadcast 41m ago
Flights observed
137
Distinct callsigns
20
Country
AU
Last broadcast
41m ago

Last known position

Most recent position reported by Mode-S 7C1AB8.

Country allocation

The ICAO 24-bit address 7C1AB8 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
UTY870 - 9 2026-07-13
UTY731 - 8 2026-07-02
UTY878 - 7 2026-07-14
UTY737 - 6 2026-07-13
UTY873 - 4 2026-07-05
UTY751 - 4 2026-07-09
UTY750 - 4 2026-07-08
UTY735 - 4 2026-07-07
UTY6526 - 4 2026-06-23
UTY879 - 3 2026-06-16
UTY6527 - 3 2026-07-07
UTY6307 - 3 2026-07-01
UTY6306 - 3 2026-07-01
UTY6303 Alliance Airlines 3 2026-06-17
UTY6302 Alliance Airlines 3 2026-06-17
UTY6301 - 3 2026-07-14
UTY6300 - 3 2026-07-14
UTY4101 - 3 2026-06-25
UTY872 - 2 2026-07-12
UTY805 Alliance Airlines 2 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UTY6301 - Jul 14, 23:30 UTCJul 15, 00:00 UTC30m
2026-07-14 UTY6300 PER → KGI Jul 14, 21:05 UTCJul 14, 21:55 UTC50m
2026-07-14 UTY878 PER → PER Jul 14, 07:10 UTCJul 14, 12:00 UTC4h 50m
2026-07-13 UTY870 PER → PER Jul 13, 23:10 UTCJul 14, 04:10 UTC5h 0m
2026-07-13 UTY737 PER → PER Jul 13, 06:55 UTCJul 13, 11:25 UTC4h 30m
2026-07-12 UTY872 PER → PER Jul 12, 21:45 UTCJul 13, 04:15 UTC6h 30m
2026-07-11 UTY6096 PER → PER Jul 11, 23:05 UTCJul 12, 03:05 UTC4h 0m
2026-07-11 UTY6360 PER → PER Jul 11, 04:35 UTCJul 11, 08:50 UTC4h 15m
2026-07-10 UTY6506 PER → PER Jul 10, 07:35 UTCJul 10, 10:20 UTC2h 45m
2026-07-09 UTY6090 PER → PER Jul 9, 23:15 UTCJul 10, 03:35 UTC4h 20m
2026-07-09 UTY753 KGI → PER Jul 9, 08:35 UTCJul 9, 09:45 UTC1h 10m
2026-07-09 UTY752 PER → KGI Jul 9, 06:30 UTCJul 9, 07:20 UTC50m
2026-07-09 UTY751 KGI → PER Jul 9, 01:20 UTCJul 9, 02:35 UTC1h 15m
2026-07-08 UTY750 PER → KGI Jul 8, 23:15 UTCJul 9, 00:05 UTC50m
2026-07-07 UTY6527 PER → PER Jul 7, 22:05 UTCJul 8, 10:00 UTC11h 55m
2026-07-07 UTY735 PER → PER Jul 7, 06:15 UTCJul 7, 11:00 UTC4h 45m
2026-07-06 UTY803 PER → PER Jul 6, 22:50 UTCJul 7, 01:40 UTC2h 50m
2026-07-05 UTY873 PER → PER Jul 5, 21:55 UTCJul 6, 04:10 UTC6h 15m
2026-07-03 UTY5208 PER → PER Jul 3, 07:20 UTCJul 3, 10:25 UTC3h 5m
2026-07-02 UTY731 PER → PER Jul 2, 21:40 UTCJul 3, 02:10 UTC4h 30m
2026-07-02 UTY737 PER → PER Jul 2, 07:05 UTCJul 2, 11:45 UTC4h 40m
2026-07-01 UTY6307 KGI → PER Jul 1, 23:35 UTCJul 2, 00:35 UTC1h 0m
2026-07-01 UTY6306 PER → KGI Jul 1, 21:50 UTCJul 1, 22:45 UTC55m
2026-07-01 UTY878 PER → PER Jul 1, 06:40 UTCJul 1, 11:35 UTC4h 55m
2026-07-01 UTY4100 PER → PER Jul 1, 00:25 UTCJul 1, 04:30 UTC4h 5m
2026-06-30 UTY735 PER → PER Jun 30, 06:35 UTCJun 30, 11:10 UTC4h 35m
2026-06-29 UTY733 PER → PER Jun 29, 22:55 UTCJun 30, 04:40 UTC5h 46m
2026-06-29 UTY873 - Jun 29, 03:44 UTCJun 29, 04:39 UTC55m
2026-06-28 UTY872 - Jun 28, 21:50 UTCJun 28, 22:24 UTC35m
2026-06-26 UTY737 PER → PER Jun 26, 06:04 UTCJun 26, 10:50 UTC4h 45m
2026-06-25 UTY6509 PER → PER Jun 25, 21:59 UTCJun 26, 00:55 UTC2h 55m
2026-06-25 UTY878 PER → PER Jun 25, 06:55 UTCJun 25, 12:25 UTC5h 30m
2026-06-25 UTY4101 PER → PER Jun 25, 00:35 UTCJun 25, 03:34 UTC3h 0m
2026-06-24 UTY4121 PER → PER Jun 24, 06:29 UTCJun 24, 09:29 UTC3h 0m
2026-06-23 UTY870 PER → PER Jun 23, 23:24 UTCJun 24, 04:20 UTC4h 55m
2026-06-23 UTY6526 PER → PER Jun 23, 06:49 UTCJun 23, 09:54 UTC3h 5m
2026-06-22 UTY803 LEI → PER Jun 22, 22:44 UTCJun 23, 01:50 UTC3h 5m
2026-06-22 UTY6526 PER → PER Jun 22, 06:39 UTCJun 22, 09:40 UTC3h 0m
2026-06-21 UTY6040 PER → PER Jun 21, 23:44 UTCJun 22, 03:35 UTC3h 50m
2026-06-19 UTY737 PER → PER Jun 19, 10:19 UTCJun 19, 14:39 UTC4h 20m
2026-06-19 UTY6505 - Jun 19, 01:24 UTCJun 19, 02:09 UTC45m
2026-06-18 UTY6504 - Jun 18, 23:25 UTCJun 18, 23:50 UTC25m
2026-06-17 UTY6521 PER → PER Jun 17, 22:05 UTCJun 18, 01:10 UTC3h 5m
2026-06-17 UTY6303 KGI → PER Jun 17, 11:20 UTCJun 17, 12:15 UTC55m
2026-06-17 UTY6302 PER → KGI Jun 17, 09:05 UTCJun 17, 10:00 UTC55m
2026-06-16 UTY870 PER → PER Jun 16, 22:45 UTCJun 17, 04:00 UTC5h 15m
2026-06-16 UTY879 PER → PER Jun 16, 06:40 UTCJun 16, 11:40 UTC5h 0m
2026-06-16 UTY871 - Jun 16, 03:00 UTCJun 16, 03:35 UTC35m
2026-06-15 UTY870 - Jun 15, 22:49 UTCJun 15, 23:19 UTC30m
2026-06-15 UTY6305 KGI → PER Jun 15, 09:30 UTCJun 15, 10:35 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-FKA page for operator, model, and routing details .

Mode-S 7C1AB8 frequently asked

What is Mode-S code 7C1AB8?
7C1AB8 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FKA.
Where is Mode-S 7C1AB8 registered?
Mode-S code 7C1AB8 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1AB8 broadcasting right now?
No active broadcast right now. Last signal was 41m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1AB8, octal 37015270, decimal 8,133,304.
What flights does 7C1AB8 operate?
Mode-S 7C1AB8 has broadcast 20 distinct callsigns, including UTY870, UTY731, UTY878, UTY737, UTY873.