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sensors Mode-S transponder

4400E9

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-FPJ · CESSNA 525 Citation M2

Hex
4400E9
Octal
21000351
Decimal
4,456,681
Country
AT
Tail
OE-FPJ
Type
C25M
No current signal · last broadcast 1h ago
Flights observed
122
Distinct callsigns
1
Country
AT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4400E9.

Country allocation

The ICAO 24-bit address 4400E9 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 1 distinct

Callsign Airline Flights Last seen
TJS1 - 122 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 TJS1 - Jul 21, 08:50 UTCJul 21, 10:15 UTC1h 25m
2026-07-20 TJS1 - Jul 20, 14:15 UTCJul 20, 17:40 UTC3h 25m
2026-07-20 TJS1 NCE → ZRH Jul 20, 13:00 UTCJul 20, 14:00 UTC1h 0m
2026-07-20 TJS1 BRI → NCE Jul 20, 10:05 UTCJul 20, 11:45 UTC1h 40m
2026-07-20 TJS1 - Jul 20, 06:45 UTCJul 20, 08:50 UTC2h 5m
2026-07-19 TJS1 - Jul 19, 07:20 UTCJul 19, 09:35 UTC2h 15m
2026-07-18 TJS1 - Jul 18, 17:00 UTCJul 18, 18:30 UTC1h 30m
2026-07-18 TJS1 - Jul 18, 15:00 UTCJul 18, 15:35 UTC35m
2026-07-18 TJS1 - Jul 18, 12:15 UTCJul 18, 13:00 UTC45m
2026-07-17 TJS1 - Jul 17, 18:25 UTCJul 17, 19:09 UTC45m
2026-07-15 TJS1 IBZ → GVA Jul 15, 16:40 UTCJul 15, 18:20 UTC1h 40m
2026-07-15 TJS1 BCN → IBZ Jul 15, 11:45 UTCJul 15, 12:20 UTC35m
2026-07-14 TJS1 LNZ → BCN Jul 14, 21:20 UTCJul 14, 23:30 UTC2h 9m
2026-07-14 TJS1 - Jul 14, 15:10 UTCJul 14, 15:25 UTC15m
2026-07-13 TJS1 - Jul 13, 15:35 UTCJul 13, 16:30 UTC55m
2026-07-12 TJS1 - Jul 12, 04:20 UTCJul 12, 05:10 UTC50m
2026-07-11 TJS1 - Jul 11, 22:35 UTCJul 11, 23:30 UTC55m
2026-07-11 TJS1 GRZ → RLG Jul 11, 08:55 UTCJul 11, 10:25 UTC1h 30m
2026-07-11 TJS1 PRG → GRZ Jul 11, 07:10 UTCJul 11, 07:50 UTC40m
2026-07-10 TJS1 - Jul 10, 13:45 UTCJul 10, 15:25 UTC1h 40m
2026-07-10 TJS1 - Jul 10, 10:20 UTCJul 10, 12:10 UTC1h 50m
2026-07-09 TJS1 BRN → VIE Jul 9, 17:20 UTCJul 9, 18:35 UTC1h 15m
2026-07-09 TJS1 - Jul 9, 15:15 UTCJul 9, 16:25 UTC1h 10m
2026-07-09 TJS1 VIE → BER Jul 9, 13:20 UTCJul 9, 14:25 UTC1h 5m
2026-07-07 TJS1 - Jul 7, 09:05 UTCJul 7, 09:50 UTC45m
2026-07-07 TJS1 - Jul 7, 06:50 UTCJul 7, 08:10 UTC1h 20m
2026-07-05 TJS1 - Jul 5, 09:55 UTCJul 5, 11:20 UTC1h 25m
2026-07-05 TJS1 - Jul 5, 07:45 UTCJul 5, 08:50 UTC1h 5m
2026-07-04 TJS1 - Jul 4, 12:40 UTCJul 4, 13:25 UTC45m
2026-07-04 TJS1 - Jul 4, 10:50 UTCJul 4, 11:25 UTC35m
2026-07-03 TJS1 - Jul 3, 11:05 UTCJul 3, 11:55 UTC50m
2026-07-03 TJS1 - Jul 3, 04:05 UTCJul 3, 05:10 UTC1h 5m
2026-07-02 TJS1 - Jul 2, 11:20 UTCJul 2, 11:50 UTC30m
2026-07-02 TJS1 - Jul 2, 09:15 UTCJul 2, 10:30 UTC1h 15m
2026-07-02 TJS1 - Jul 2, 07:00 UTCJul 2, 07:40 UTC40m
2026-06-30 TJS1 - Jun 30, 16:35 UTCJun 30, 17:30 UTC55m
2026-06-29 TJS1 - Jun 29, 16:35 UTCJun 29, 17:19 UTC45m
2026-06-29 TJS1 - Jun 29, 11:29 UTCJun 29, 12:49 UTC1h 20m
2026-06-29 TJS1 - Jun 29, 09:44 UTCJun 29, 10:50 UTC1h 5m
2026-06-29 TJS1 - Jun 29, 07:50 UTCJun 29, 09:00 UTC1h 10m
2026-06-23 TJS1 - Jun 23, 04:19 UTCJun 23, 06:19 UTC2h 0m
2026-06-20 TJS1 - Jun 20, 14:29 UTCJun 20, 15:24 UTC55m
2026-06-19 TJS1 ZRH → BLL Jun 19, 12:49 UTCJun 19, 14:19 UTC1h 30m
2026-06-18 TJS1 STR → ZRH Jun 18, 04:00 UTCJun 18, 04:30 UTC30m
2026-06-17 TJS1 BMA → STR Jun 17, 18:25 UTCJun 17, 20:35 UTC2h 10m
2026-06-17 TJS1 ARN → BMA Jun 17, 16:20 UTCJun 17, 16:30 UTC10m
2026-06-16 TJS1 - Jun 16, 12:00 UTCJun 16, 14:30 UTC2h 30m
2026-06-16 TJS1 - Jun 16, 10:20 UTCJun 16, 10:35 UTC15m
2026-06-12 TJS1 - Jun 12, 12:05 UTCJun 12, 14:20 UTC2h 15m
2026-06-12 TJS1 - Jun 12, 08:15 UTCJun 12, 10:30 UTC2h 15m

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

Mode-S 4400E9 frequently asked

What is Mode-S code 4400E9?
4400E9 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-FPJ.
Where is Mode-S 4400E9 registered?
Mode-S code 4400E9 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4400E9 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4400E9, octal 21000351, decimal 4,456,681.
What flights does 4400E9 operate?
Mode-S 4400E9 has broadcast 1 distinct callsign, including TJS1.