Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

396671

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GZTR · BOEING 737-400

Hex
396671
Octal
16263161
Decimal
3,761,777
Country
FR
Tail
F-GZTR
Type
B734
No current signal · last broadcast 3d ago
Flights observed
126
Distinct callsigns
18
Country
FR
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 396671.

Country allocation

The ICAO 24-bit address 396671 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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 18 distinct

Callsign Airline Flights Last seen
TAY4PO - 34 2026-07-01
TAY3PO - 34 2026-07-01
TAY5TR - 22 2026-07-03
TAY6TR ASL Airlines Belgium 11 2026-07-03
FPO720 Europe Airpost 7 2026-04-16
FPO774 Europe Airpost 4 2026-04-16
FPO775 - 2 2026-04-16
FPO701 Europe Airpost 2 2026-04-15
TAY9IE ASL Airlines Belgium 1 2026-06-03
TAY8IE - 1 2026-06-03
FPO773 - 1 2026-04-13
FPO4994 - 1 2026-07-08
FPO4993 - 1 2026-07-08
FPO18 - 1 2026-06-02
FPO17 - 1 2026-05-30
FPO125 - 1 2026-07-10
FPO103 - 1 2026-07-10
FDX4659 - 1 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 FPO103 - Jul 10, 17:15 UTCJul 10, 19:25 UTC2h 10m
2026-07-10 FPO125 - Jul 10, 05:10 UTCJul 10, 06:20 UTC1h 10m
2026-07-10 FDX4659 - Jul 10, 02:25 UTCJul 10, 03:25 UTC1h 0m
2026-07-08 FPO4994 - Jul 8, 21:15 UTCJul 8, 22:45 UTC1h 30m
2026-07-08 FPO4993 - Jul 8, 17:20 UTCJul 8, 19:00 UTC1h 40m
2026-07-03 TAY6TR STR → CDG Jul 3, 20:35 UTCJul 3, 21:30 UTC55m
2026-07-03 TAY5TR - Jul 3, 04:20 UTCJul 3, 04:45 UTC25m
2026-07-03 TAY5TR - Jul 3, 02:10 UTCJul 3, 03:10 UTC1h 0m
2026-07-01 TAY4PO OPO → CDG Jul 1, 20:35 UTCJul 1, 22:30 UTC1h 55m
2026-07-01 TAY3PO CDG → OPO Jul 1, 03:25 UTCJul 1, 05:15 UTC1h 50m
2026-06-29 TAY4PO - Jun 29, 20:35 UTCJun 29, 22:24 UTC1h 50m
2026-06-28 TAY3PO - Jun 28, 17:55 UTCJun 28, 19:49 UTC1h 55m
2026-06-26 TAY6TR STR → CDG Jun 26, 20:44 UTCJun 26, 21:39 UTC55m
2026-06-26 TAY5TR FRA → STR Jun 26, 04:10 UTCJun 26, 04:30 UTC20m
2026-06-26 TAY5TR - Jun 26, 02:24 UTCJun 26, 03:20 UTC55m
2026-06-25 TAY4PO OPO → CDG Jun 25, 20:34 UTCJun 25, 22:20 UTC1h 45m
2026-06-25 TAY3PO - Jun 25, 03:20 UTCJun 25, 05:15 UTC1h 55m
2026-06-24 TAY4PO OPO → CDG Jun 24, 20:54 UTCJun 24, 22:45 UTC1h 50m
2026-06-24 TAY3PO - Jun 24, 03:24 UTCJun 24, 05:15 UTC1h 50m
2026-06-23 TAY4PO OPO → CDG Jun 23, 20:10 UTCJun 23, 21:59 UTC1h 50m
2026-06-23 TAY3PO CDG → OPO Jun 23, 03:29 UTCJun 23, 05:24 UTC1h 55m
2026-06-22 TAY4PO OPO → CDG Jun 22, 20:49 UTCJun 22, 22:40 UTC1h 50m
2026-06-21 TAY3PO - Jun 21, 17:50 UTCJun 21, 19:55 UTC2h 5m
2026-06-19 TAY6TR STR → CDG Jun 19, 20:44 UTCJun 19, 21:34 UTC50m
2026-06-19 TAY5TR FRA → STR Jun 19, 04:14 UTCJun 19, 04:39 UTC25m
2026-06-19 TAY5TR - Jun 19, 02:35 UTCJun 19, 03:20 UTC45m
2026-06-18 TAY4PO OPO → CDG Jun 18, 20:30 UTCJun 18, 22:15 UTC1h 45m
2026-06-18 TAY3PO - Jun 18, 03:20 UTCJun 18, 05:15 UTC1h 55m
2026-06-17 TAY4PO OPO → CDG Jun 17, 20:25 UTCJun 17, 22:10 UTC1h 45m
2026-06-17 TAY3PO - Jun 17, 03:25 UTCJun 17, 05:15 UTC1h 50m
2026-06-16 TAY4PO OPO → CDG Jun 16, 20:30 UTCJun 16, 22:20 UTC1h 50m
2026-06-16 TAY3PO CDG → OPO Jun 16, 03:35 UTCJun 16, 05:20 UTC1h 45m
2026-06-15 TAY4PO OPO → CDG Jun 15, 20:30 UTCJun 15, 22:20 UTC1h 50m
2026-06-14 TAY3PO - Jun 14, 19:45 UTCJun 14, 21:30 UTC1h 45m
2026-06-12 TAY6TR STR → CDG Jun 12, 20:40 UTCJun 12, 21:30 UTC50m
2026-06-12 TAY5TR NUE → STR Jun 12, 04:15 UTCJun 12, 04:35 UTC20m
2026-06-12 TAY5TR NUE → STR Jun 12, 02:05 UTCJun 12, 03:05 UTC1h 0m
2026-06-11 TAY4PO OPO → CDG Jun 11, 20:25 UTCJun 11, 22:20 UTC1h 55m
2026-06-11 TAY3PO OPO → OPO Jun 11, 03:25 UTCJun 11, 05:10 UTC1h 45m
2026-06-10 TAY4PO OPO → CDG Jun 10, 20:30 UTCJun 10, 22:25 UTC1h 55m
2026-06-10 TAY3PO OPO → OPO Jun 10, 03:30 UTCJun 10, 05:25 UTC1h 55m
2026-06-05 TAY6TR STR → CDG Jun 5, 20:35 UTCJun 5, 21:30 UTC55m
2026-06-05 TAY5TR NUE → STR Jun 5, 04:20 UTCJun 5, 04:45 UTC25m
2026-06-05 TAY5TR NUE → STR Jun 5, 02:35 UTCJun 5, 03:25 UTC50m
2026-06-04 TAY4PO OPO → CDG Jun 4, 20:15 UTCJun 4, 22:10 UTC1h 55m
2026-06-04 TAY3PO OPO → OPO Jun 4, 03:20 UTCJun 4, 05:30 UTC2h 10m
2026-06-03 TAY9IE VIE → CDG Jun 3, 21:05 UTCJun 3, 22:45 UTC1h 40m
2026-06-03 TAY8IE CDG → VIE Jun 3, 02:25 UTCJun 3, 03:55 UTC1h 30m
2026-06-02 FPO18 - Jun 2, 19:50 UTCJun 2, 20:25 UTC35m
2026-05-30 FPO17 - May 30, 03:20 UTCMay 30, 03:55 UTC35m

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 F-GZTR page for operator, model, and routing details .

Mode-S 396671 frequently asked

What is Mode-S code 396671?
396671 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GZTR.
Where is Mode-S 396671 registered?
Mode-S code 396671 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 396671 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 396671, octal 16263161, decimal 3,761,777.
What flights does 396671 operate?
Mode-S 396671 has broadcast 18 distinct callsigns, including TAY4PO, TAY3PO, TAY5TR, TAY6TR, FPO720.