Apparatus

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sensors Mode-S transponder

7C1ABB

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C1ABB
Octal
37015273
Decimal
8,133,307
Country
AU
Tail
VH-FKD
Type
F100
Broadcasting now · callsign UTY5208 · 4,250 ft
Flights observed
159
Distinct callsigns
20
Country
AU
Last broadcast
Jul 24, 10:15 UTC

Current position

7C1ABB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C1ABB 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
UTY737 Alliance Airlines 17 2026-07-23
UTY731 - 7 2026-07-16
UTY870 - 6 2026-07-20
UTY6302 - 6 2026-07-20
UTY3870 - 6 2026-07-21
UTY738 Alliance Airlines 5 2026-07-20
UTY6527 - 5 2026-07-01
UTY6303 Alliance Airlines 5 2026-07-20
UTY878 - 4 2026-07-16
UTY6520 - 4 2026-07-13
UTY6500 - 4 2026-06-21
UTY4120 - 4 2026-07-15
UTY6526 - 3 2026-07-21
UTY6521 - 3 2026-06-22
UTY6506 - 3 2026-06-19
UTY5205 - 3 2026-05-14
UTY5204 - 3 2026-06-17
UTY5202 - 3 2026-06-11
UTY4101 - 3 2026-07-16
UTY959 - 2 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 UTY5209 PER → PER Jul 24, 07:20 UTCJul 24, 10:10 UTC2h 50m
2026-07-23 UTY6360 PER → SLJ Jul 23, 23:40 UTCJul 24, 03:55 UTC4h 15m
2026-07-23 UTY737 PER → KTA Jul 23, 07:05 UTCJul 23, 11:45 UTC4h 40m
2026-07-22 UTY6307 KGI → PER Jul 22, 23:20 UTCJul 23, 00:15 UTC55m
2026-07-22 UTY6306 PER → KGI Jul 22, 21:40 UTCJul 22, 22:30 UTC50m
2026-07-21 UTY3870 - Jul 21, 23:45 UTCJul 22, 05:25 UTC5h 40m
2026-07-21 UTY6526 PER → PER Jul 21, 06:55 UTCJul 21, 09:55 UTC3h 0m
2026-07-20 UTY870 PER → PER Jul 20, 23:00 UTCJul 21, 04:05 UTC5h 5m
2026-07-20 UTY738 KTA → PER Jul 20, 06:50 UTCJul 20, 11:30 UTC4h 40m
2026-07-20 UTY6303 KGI → PER Jul 20, 03:25 UTCJul 20, 04:45 UTC1h 20m
2026-07-20 UTY6302 PER → KGI Jul 20, 01:45 UTCJul 20, 02:35 UTC50m
2026-07-17 UTY6502 PER → PER Jul 17, 04:44 UTCJul 17, 07:35 UTC2h 50m
2026-07-16 UTY731 PER → PER Jul 16, 21:45 UTCJul 17, 02:05 UTC4h 20m
2026-07-16 UTY878 PER → PER Jul 16, 06:40 UTCJul 16, 12:49 UTC6h 10m
2026-07-16 UTY4101 PER → PER Jul 16, 00:15 UTCJul 16, 04:00 UTC3h 45m
2026-07-15 UTY4120 PER → PER Jul 15, 06:20 UTCJul 15, 09:30 UTC3h 10m
2026-07-15 UTY4100 PER → PER Jul 15, 00:15 UTCJul 15, 04:40 UTC4h 25m
2026-07-14 UTY953 - Jul 14, 10:00 UTCJul 14, 10:45 UTC45m
2026-07-14 UTY952 - Jul 14, 07:55 UTCJul 14, 08:20 UTC25m
2026-07-13 UTY6520 PER → PER Jul 13, 22:00 UTCJul 14, 00:55 UTC2h 55m
2026-07-13 UTY6305 KGI → PER Jul 13, 09:35 UTCJul 13, 10:45 UTC1h 10m
2026-07-13 UTY6304 PER → KGI Jul 13, 07:40 UTCJul 13, 08:25 UTC45m
2026-07-13 UTY6303 KGI → PER Jul 13, 00:15 UTCJul 13, 01:20 UTC1h 5m
2026-07-12 UTY6302 PER → KGI Jul 12, 22:30 UTCJul 12, 23:20 UTC50m
2026-07-10 UTY5208 PER → PER Jul 10, 08:30 UTCJul 10, 11:10 UTC2h 40m
2026-07-09 UTY6505 PER → PER Jul 9, 23:30 UTCJul 10, 02:20 UTC2h 50m
2026-07-09 UTY737 PER → PER Jul 9, 07:00 UTCJul 9, 11:35 UTC4h 35m
2026-07-09 UTY4101 PER → PER Jul 9, 00:10 UTCJul 9, 03:30 UTC3h 20m
2026-07-08 UTY3870 PER → PER Jul 8, 00:35 UTCJul 8, 05:45 UTC5h 10m
2026-07-07 UTY879 - Jul 7, 10:55 UTCJul 7, 11:35 UTC40m
2026-07-07 UTY878 - Jul 7, 06:40 UTCJul 7, 07:10 UTC30m
2026-07-07 UTY871 - Jul 7, 02:55 UTCJul 7, 03:40 UTC45m
2026-07-06 UTY870 - Jul 6, 22:50 UTCJul 6, 23:15 UTC25m
2026-07-06 UTY6526 PER → PER Jul 6, 06:45 UTCJul 6, 09:45 UTC3h 0m
2026-07-06 UTY6040 PER → PER Jul 6, 00:00 UTCJul 6, 04:20 UTC4h 20m
2026-07-03 UTY6096 PER → PER Jul 3, 00:10 UTCJul 3, 04:10 UTC4h 0m
2026-07-01 UTY959 PER → PER Jul 1, 23:55 UTCJul 2, 07:00 UTC7h 5m
2026-07-01 UTY6527 - Jul 1, 09:35 UTCJul 1, 10:40 UTC1h 5m
2026-07-01 UTY6527 - Jul 1, 08:50 UTCJul 1, 09:05 UTC15m
2026-06-30 UTY6520 - Jun 30, 22:15 UTCJun 30, 22:55 UTC40m
2026-06-30 UTY6527 PER → PER Jun 30, 06:55 UTCJun 30, 10:05 UTC3h 10m
2026-06-29 UTY731 PER → PER Jun 29, 21:44 UTCJun 30, 02:40 UTC4h 55m
2026-06-29 UTY4881 PER → PER Jun 29, 04:34 UTCJun 29, 12:00 UTC7h 25m
2026-06-29 UTY6303 KGI → PER Jun 29, 02:00 UTCJun 29, 03:10 UTC1h 10m
2026-06-29 UTY6302 PER → KGI Jun 29, 00:24 UTCJun 29, 01:20 UTC55m
2026-06-25 UTY731 PER → PER Jun 25, 21:35 UTCJun 26, 04:30 UTC6h 55m
2026-06-25 UTY5207 PER → PER Jun 25, 07:30 UTCJun 25, 12:04 UTC4h 35m
2026-06-24 UTY870 PER → PER Jun 24, 23:00 UTCJun 25, 03:50 UTC4h 50m
2026-06-24 UTY3870 PER → PER Jun 24, 00:05 UTCJun 24, 05:49 UTC5h 45m
2026-06-23 UTY737 PER → PER Jun 23, 06:55 UTCJun 23, 11:19 UTC4h 25m

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

Mode-S 7C1ABB frequently asked

What is Mode-S code 7C1ABB?
7C1ABB is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FKD.
Where is Mode-S 7C1ABB registered?
Mode-S code 7C1ABB is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1ABB broadcasting right now?
Yes. Mode-S 7C1ABB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1ABB, octal 37015273, decimal 8,133,307.
What flights does 7C1ABB operate?
Mode-S 7C1ABB has broadcast 20 distinct callsigns, including UTY737, UTY731, UTY870, UTY6302, UTY3870.