Apparatus

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sensors Mode-S transponder

440866

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-FDT · CESSNA 510 Citation Mustang

Hex
440866
Octal
21004146
Decimal
4,458,598
Country
AT
Tail
OE-FDT
Type
C510
No current signal · last broadcast 8h ago
Flights observed
211
Distinct callsigns
20
Country
AT
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 440866.

Country allocation

The ICAO 24-bit address 440866 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
GAC845M - 2 2026-04-18
GAC672P - 2 2026-04-14
GAC570X - 2 2026-04-14
GAC567A - 2 2026-05-03
GAC469Y - 2 2026-04-15
GAC412K - 2 2026-04-17
GAC391K - 2 2026-05-05
GAC150W - 2 2026-05-17
GAC147Z - 2 2026-04-14
GAC020Z - 2 2026-06-09
GAC994U - 1 2026-06-08
GAC989V - 1 2026-05-15
GAC980D - 1 2026-05-26
GAC977C - 1 2026-04-13
GAC961T - 1 2026-06-23
GAC959F - 1 2026-07-01
GAC951G - 1 2026-06-05
GAC951F - 1 2026-06-05
GAC949F - 1 2026-04-17
GAC940G - 1 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GAC819G BOD → CEQ Jul 14, 10:15 UTCJul 14, 11:35 UTC1h 20m
2026-07-13 GAC920F - Jul 13, 14:30 UTCJul 13, 16:25 UTC1h 55m
2026-07-13 GAC268B - Jul 13, 09:30 UTCJul 13, 11:25 UTC1h 55m
2026-07-13 GAC379A - Jul 13, 06:45 UTCJul 13, 08:10 UTC1h 25m
2026-07-12 GAC439A - Jul 12, 13:20 UTCJul 12, 15:25 UTC2h 5m
2026-07-12 GAC480Y - Jul 12, 08:40 UTCJul 12, 09:30 UTC50m
2026-07-12 GAC703T - Jul 12, 05:50 UTCJul 12, 06:55 UTC1h 5m
2026-07-11 GAC605H - Jul 11, 17:15 UTCJul 11, 17:50 UTC35m
2026-07-11 GAC565L - Jul 11, 15:00 UTCJul 11, 16:00 UTC1h 0m
2026-07-11 GAC676L MXP → GVA Jul 11, 13:05 UTCJul 11, 13:40 UTC35m
2026-07-11 GAC163X - Jul 11, 09:30 UTCJul 11, 11:35 UTC2h 5m
2026-07-10 GAC385U - Jul 10, 14:05 UTCJul 10, 15:25 UTC1h 20m
2026-07-10 GAC079Q - Jul 10, 12:15 UTCJul 10, 12:45 UTC30m
2026-07-10 GAC180P - Jul 10, 10:25 UTCJul 10, 11:00 UTC35m
2026-07-10 GAC246V - Jul 10, 08:10 UTCJul 10, 09:20 UTC1h 10m
2026-07-10 GAC579Q - Jul 10, 05:15 UTCJul 10, 06:55 UTC1h 40m
2026-07-09 GAC935J - Jul 9, 13:40 UTCJul 9, 15:30 UTC1h 50m
2026-07-09 GAC046J - Jul 9, 11:50 UTCJul 9, 12:40 UTC50m
2026-07-09 GAC416X NCE → LBG Jul 9, 08:10 UTCJul 9, 09:40 UTC1h 30m
2026-07-09 GAC527W - Jul 9, 05:35 UTCJul 9, 06:00 UTC25m
2026-07-08 GAC796B - Jul 8, 14:20 UTCJul 8, 15:50 UTC1h 30m
2026-07-08 GAC807A - Jul 8, 12:20 UTCJul 8, 13:05 UTC45m
2026-07-08 GAC040R - Jul 8, 08:35 UTCJul 8, 10:30 UTC1h 55m
2026-07-08 GAC151Q MAN → BQH Jul 8, 06:45 UTCJul 8, 07:25 UTC40m
2026-07-07 GAC619H - Jul 7, 15:55 UTCJul 7, 18:10 UTC2h 15m
2026-07-07 GAC720G - Jul 7, 12:35 UTCJul 7, 14:20 UTC1h 45m
2026-07-06 GAC286C LIN → OLB Jul 6, 15:35 UTCJul 6, 16:45 UTC1h 10m
2026-07-06 GAC397B BEG → LIN Jul 6, 12:35 UTCJul 6, 14:20 UTC1h 45m
2026-07-06 GAC545D - Jul 6, 08:30 UTCJul 6, 10:30 UTC2h 0m
2026-07-06 GAC656C - Jul 6, 06:00 UTCJul 6, 07:00 UTC1h 0m
2026-07-05 GAC345Y - Jul 5, 16:05 UTCJul 5, 17:15 UTC1h 10m
2026-07-05 GAC689E - Jul 5, 14:05 UTCJul 5, 15:05 UTC1h 0m
2026-07-05 GAC918U - Jul 5, 12:30 UTCJul 5, 13:15 UTC45m
2026-07-05 GAC029T - Jul 5, 10:05 UTCJul 5, 10:55 UTC50m
2026-07-04 GAC255V - Jul 4, 12:15 UTCJul 4, 13:15 UTC1h 0m
2026-07-04 GAC366U LNZ → CGN Jul 4, 10:05 UTCJul 4, 11:25 UTC1h 20m
2026-07-03 GAC715V - Jul 3, 11:15 UTCJul 3, 12:05 UTC50m
2026-07-03 GAC679Q - Jul 3, 09:25 UTCJul 3, 10:05 UTC40m
2026-07-02 GAC290Q - Jul 2, 15:50 UTCJul 2, 17:10 UTC1h 20m
2026-07-02 GAC301P - Jul 2, 13:20 UTCJul 2, 14:50 UTC1h 30m
2026-07-01 GAC848G - Jul 1, 11:15 UTCJul 1, 12:35 UTC1h 20m
2026-07-01 GAC959F - Jul 1, 09:55 UTCJul 1, 10:25 UTC30m
2026-07-01 GAC760D - Jul 1, 07:10 UTCJul 1, 08:10 UTC1h 0m
2026-07-01 GAC871C NCE → BRU Jul 1, 04:20 UTCJul 1, 06:00 UTC1h 40m
2026-06-30 GAC318C - Jun 30, 14:40 UTCJun 30, 15:25 UTC45m
2026-06-30 GAC530Z - Jun 30, 09:45 UTCJun 30, 11:15 UTC1h 30m
2026-06-30 GAC452X - Jun 30, 06:50 UTCJun 30, 07:55 UTC1h 5m
2026-06-29 GAC563W - Jun 29, 18:05 UTCJun 29, 18:55 UTC50m
2026-06-29 GAC078H ZRH → TRS Jun 29, 16:25 UTCJun 29, 17:19 UTC55m
2026-06-29 GAC381X - Jun 29, 13:39 UTCJun 29, 14:25 UTC45m

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

Mode-S 440866 frequently asked

What is Mode-S code 440866?
440866 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-FDT.
Where is Mode-S 440866 registered?
Mode-S code 440866 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440866 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440866, octal 21004146, decimal 4,458,598.
What flights does 440866 operate?
Mode-S 440866 has broadcast 20 distinct callsigns, including GAC845M, GAC672P, GAC570X, GAC567A, GAC469Y.