Apparatus

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sensors Mode-S transponder

4405A6

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-FOE · CESSNA 510 Citation Mustang

Hex
4405A6
Octal
21002646
Decimal
4,457,894
Country
AT
Tail
OE-FOE
Type
C510
Broadcasting now · callsign GAC542A · 19,000 ft
Flights observed
150
Distinct callsigns
20
Country
AT
Last broadcast
20h ago

Current position

4405A6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4405A6 falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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
GAC964F - 2 2026-06-01
GAC830Z - 2 2026-04-17
GAC786U - 2 2026-04-13
GAC663D - 2 2026-04-14
GAC412J - 2 2026-04-15
GAC199E - 2 2026-04-16
GAC198L - 2 2026-05-18
GAC992G - 1 2026-06-18
GAC987S - 1 2026-06-14
GAC985C - 1 2026-06-25
GAC968X - 1 2026-04-13
GAC954N - 1 2026-06-15
GAC941M - 1 2026-06-05
GAC940S - 1 2026-05-14
GAC938W - 1 2026-06-09
GAC938J - 1 2026-06-26
GAC934F - 1 2026-06-25
GAC921C - 1 2026-06-12
GAC908J - 1 2026-05-30
GAC887A - 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GAC552U - Jul 13, 11:55 UTCJul 13, 12:40 UTC45m
2026-07-13 GAC663T - Jul 13, 09:20 UTCJul 13, 10:25 UTC1h 5m
2026-07-13 GAC266Z - Jul 13, 07:10 UTCJul 13, 08:05 UTC55m
2026-07-12 GAC377Y - Jul 12, 13:10 UTCJul 12, 13:20 UTC10m
2026-07-12 GAC249D - Jul 12, 09:45 UTCJul 12, 12:01 UTC2h 15m
2026-06-27 GAC218U - Jun 27, 11:50 UTCJun 27, 13:30 UTC1h 40m
2026-06-27 GAC444F BER → BLL Jun 27, 09:09 UTCJun 27, 10:10 UTC1h 0m
2026-06-27 GAC666C ZRH → BER Jun 27, 06:15 UTCJun 27, 07:30 UTC1h 15m
2026-06-26 GAC716L - Jun 26, 15:10 UTCJun 26, 16:39 UTC1h 30m
2026-06-26 GAC938J - Jun 26, 12:44 UTCJun 26, 13:24 UTC40m
2026-06-26 GAC706P - Jun 26, 10:20 UTCJun 26, 11:14 UTC55m
2026-06-26 GAC817N - Jun 26, 08:15 UTCJun 26, 09:10 UTC55m
2026-06-25 GAC874D - Jun 25, 14:14 UTCJun 25, 15:20 UTC1h 5m
2026-06-25 GAC985C - Jun 25, 12:19 UTCJun 25, 13:05 UTC45m
2026-06-25 GAC712J - Jun 25, 10:04 UTCJun 25, 11:10 UTC1h 5m
2026-06-25 GAC934F - Jun 25, 08:04 UTCJun 25, 08:50 UTC45m
2026-06-24 GAC047T - Jun 24, 17:34 UTCJun 24, 17:50 UTC15m
2026-06-24 GAC015B - Jun 24, 14:04 UTCJun 24, 15:54 UTC1h 50m
2026-06-24 GAC237X - Jun 24, 10:59 UTCJun 24, 11:50 UTC50m
2026-06-24 GAC065L - Jun 24, 09:09 UTCJun 24, 10:19 UTC1h 10m
2026-06-23 GAC176L - Jun 23, 12:49 UTCJun 23, 13:45 UTC55m
2026-06-22 GAC575X - Jun 22, 14:29 UTCJun 22, 16:40 UTC2h 10m
2026-06-22 GAC797U - Jun 22, 12:19 UTCJun 22, 13:29 UTC1h 10m
2026-06-21 GAC017W - Jun 21, 18:10 UTCJun 21, 19:24 UTC1h 15m
2026-06-21 GAC128V - Jun 21, 14:40 UTCJun 21, 14:54 UTC15m
2026-06-21 GAC288N - Jun 21, 13:00 UTCJun 21, 13:50 UTC50m
2026-06-21 GAC400L IBZ → LIN Jun 21, 08:54 UTCJun 21, 10:44 UTC1h 50m
2026-06-20 GAC077R - Jun 20, 17:10 UTCJun 20, 19:15 UTC2h 5m
2026-06-20 GAC188Q - Jun 20, 14:44 UTCJun 20, 15:49 UTC1h 5m
2026-06-20 GAC021Z - Jun 20, 10:44 UTCJun 20, 12:24 UTC1h 40m
2026-06-20 GAC132Y - Jun 20, 08:49 UTCJun 20, 09:49 UTC1h 0m
2026-06-19 GAC206Z - Jun 19, 07:59 UTCJun 19, 09:24 UTC1h 25m
2026-06-18 GAC317Y - Jun 18, 10:25 UTCJun 18, 11:25 UTC1h 0m
2026-06-18 GAC881H - Jun 18, 08:05 UTCJun 18, 09:15 UTC1h 10m
2026-06-18 GAC992G - Jun 18, 06:10 UTCJun 18, 06:35 UTC25m
2026-06-17 GAC106L - Jun 17, 13:00 UTCJun 17, 14:00 UTC1h 0m
2026-06-17 GAC328J - Jun 17, 11:30 UTCJun 17, 12:05 UTC35m
2026-06-17 GAC543C - Jun 17, 09:10 UTCJun 17, 10:20 UTC1h 10m
2026-06-16 GAC654B - Jun 16, 14:39 UTCJun 16, 15:20 UTC40m
2026-06-16 GAC533X - Jun 16, 11:10 UTCJun 16, 13:09 UTC2h 0m
2026-06-16 GAC644W CGN → CBG Jun 16, 08:30 UTCJun 16, 09:34 UTC1h 5m
2026-06-15 GAC020U GRZ → CGN Jun 15, 18:04 UTCJun 15, 19:45 UTC1h 40m
2026-06-15 GAC954N - Jun 15, 16:30 UTCJun 15, 16:55 UTC25m
2026-06-14 GAC712Y - Jun 14, 19:05 UTCJun 14, 20:05 UTC1h 0m
2026-06-14 GAC987S - Jun 14, 15:45 UTCJun 14, 17:15 UTC1h 30m
2026-06-14 GAC109P - Jun 14, 13:00 UTCJun 14, 14:15 UTC1h 15m
2026-06-14 GAC085P - Jun 14, 10:10 UTCJun 14, 11:25 UTC1h 15m
2026-06-13 GAC005B - Jun 13, 10:35 UTCJun 13, 12:25 UTC1h 50m
2026-06-12 GAC117K - Jun 12, 15:45 UTCJun 12, 16:45 UTC1h 0m
2026-06-12 GAC810D - Jun 12, 13:15 UTCJun 12, 14:05 UTC50m

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 OE-FOE page for operator, model, and routing details .

Mode-S 4405A6 frequently asked

What is Mode-S code 4405A6?
4405A6 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-FOE.
Where is Mode-S 4405A6 registered?
Mode-S code 4405A6 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4405A6 broadcasting right now?
Yes. Mode-S 4405A6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4405A6, octal 21002646, decimal 4,457,894.
What flights does 4405A6 operate?
Mode-S 4405A6 has broadcast 20 distinct callsigns, including GAC964F, GAC830Z, GAC786U, GAC663D, GAC412J.