Apparatus

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sensors Mode-S transponder

AE5719

ICAO 24-bit transponder address

Currently assigned to 168981 · Boeing C-40A Clipper

Hex
AE5719
Octal
53453431
Decimal
11,425,561
Tail
168981
Type
B737
No current signal · last broadcast 12h ago
Flights observed
11
Distinct callsigns
2
Country
-
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S AE5719.

Callsign history 2 distinct

Callsign Airline Flights Last seen
CNV981 - 6 2026-04-18
CNV7469 - 5 2026-04-16

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-18 CNV981 - Apr 18, 05:25 UTCApr 18, 05:35 UTC10m
2026-04-18 CNV981 - Apr 18, 05:00 UTCApr 18, 05:35 UTC35m
2026-04-18 CNV981 - Apr 18, 03:25 UTCApr 18, 05:20 UTC1h 55m
2026-04-18 CNV981 - Apr 18, 02:50 UTCApr 18, 03:20 UTC30m
2026-04-18 CNV981 - Apr 18, 01:25 UTCApr 18, 01:35 UTC10m
2026-04-18 CNV981 - Apr 18, 00:50 UTCApr 18, 01:20 UTC30m
2026-04-16 CNV7469 - Apr 16, 01:30 UTCApr 16, 02:19 UTC50m
2026-04-16 CNV7469 - Apr 16, 00:00 UTCApr 16, 00:20 UTC20m
2026-04-15 CNV7469 - Apr 15, 05:30 UTCApr 15, 05:55 UTC25m
2026-04-15 CNV7469 - Apr 15, 03:15 UTCApr 15, 04:30 UTC1h 15m
2026-04-15 CNV7469 - Apr 15, 00:05 UTCApr 15, 00:45 UTC40m

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 168981 page for operator, model, and routing details .

Mode-S AE5719 frequently asked

What is Mode-S code AE5719?
AE5719 is an ICAO 24-bit transponder address. Assigned to 168981.
Is AE5719 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE5719, octal 53453431, decimal 11,425,561.
What flights does AE5719 operate?
Mode-S AE5719 has broadcast 2 distinct callsigns, including CNV981, CNV7469.