Apparatus

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sensors Mode-S transponder

AD1BE5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9439E · CESSNA 172 Skyhawk · operated by SILVERHAWK AVIATION ACADEMY LLC

Hex
AD1BE5
Octal
53215745
Decimal
11,344,869
Country
US
Tail
N9439E
Type
C172
No current signal · last broadcast 9d ago
Flights observed
68
Distinct callsigns
1
Country
US
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S AD1BE5.

Country allocation

The ICAO 24-bit address AD1BE5 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
N9439E - 66 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N9439E - Jul 25, 00:05 UTCJul 25, 00:25 UTC20m
2026-07-15 N9439E - Jul 15, 22:50 UTCJul 15, 23:00 UTC10m
2026-07-15 N9439E - Jul 15, 14:55 UTCJul 15, 15:45 UTC50m
2026-07-14 N9439E - Jul 14, 20:55 UTCJul 14, 21:40 UTC45m
2026-07-10 N9439E - Jul 10, 19:05 UTCJul 10, 19:30 UTC25m
2026-07-10 N9439E - Jul 10, 16:20 UTCJul 10, 16:40 UTC20m
2026-07-10 N9439E - Jul 10, 14:55 UTCJul 10, 15:05 UTC10m
2026-07-09 N9439E - Jul 9, 20:50 UTCJul 9, 21:15 UTC25m
2026-07-08 N9439E ONO → ONO Jul 8, 12:25 UTCJul 8, 12:40 UTC15m
2026-07-07 N9439E - Jul 7, 14:45 UTCJul 7, 15:40 UTC55m
2026-07-07 N9439E ONO → ONO Jul 7, 13:30 UTCJul 7, 13:45 UTC15m
2026-07-06 N9439E - Jul 6, 13:05 UTCJul 6, 13:30 UTC25m
2026-07-05 N9439E - Jul 5, 22:40 UTCJul 5, 23:30 UTC50m
2026-07-05 N9439E - Jul 5, 20:50 UTCJul 5, 21:15 UTC25m
2026-07-03 N9439E - Jul 3, 14:45 UTCJul 3, 15:00 UTC15m
2026-07-01 - - Jul 1, 18:50 UTCJul 1, 19:30 UTC40m
2026-06-30 N9439E - Jun 30, 22:05 UTCJun 30, 22:15 UTC10m
2026-06-30 N9439E - Jun 30, 17:10 UTCJun 30, 17:20 UTC10m
2026-06-30 - ONO → ONO Jun 30, 13:15 UTCJun 30, 13:25 UTC10m
2026-06-30 N9439E - Jun 30, 12:00 UTCJun 30, 12:40 UTC40m
2026-06-29 N9439E - Jun 29, 15:04 UTCJun 29, 15:49 UTC45m
2026-06-25 N9439E - Jun 25, 18:45 UTCJun 25, 19:24 UTC40m
2026-06-25 N9439E ONO → ONO Jun 25, 12:25 UTCJun 25, 12:40 UTC15m
2026-06-24 N9439E - Jun 24, 01:09 UTCJun 24, 01:19 UTC10m
2026-06-23 N9439E - Jun 23, 14:35 UTCJun 23, 14:49 UTC15m
2026-06-22 N9439E - Jun 22, 21:19 UTCJun 22, 21:59 UTC40m
2026-06-21 N9439E - Jun 21, 14:40 UTCJun 21, 15:09 UTC30m
2026-06-18 N9439E - Jun 18, 14:45 UTCJun 18, 15:35 UTC50m
2026-06-18 N9439E - Jun 18, 13:20 UTCJun 18, 13:50 UTC30m
2026-06-16 N9439E - Jun 16, 19:00 UTCJun 16, 19:19 UTC20m
2026-06-16 N9439E - Jun 16, 14:35 UTCJun 16, 15:35 UTC1h 0m
2026-06-16 N9439E - Jun 16, 12:35 UTCJun 16, 13:25 UTC50m
2026-06-15 N9439E - Jun 15, 18:35 UTCJun 15, 19:35 UTC1h 0m
2026-06-15 N9439E - Jun 15, 16:35 UTCJun 15, 17:10 UTC35m
2026-06-15 N9439E - Jun 15, 14:50 UTCJun 15, 15:25 UTC35m
2026-06-15 N9439E - Jun 15, 01:10 UTCJun 15, 01:20 UTC10m
2026-06-14 N9439E - Jun 14, 23:00 UTCJun 14, 23:20 UTC19m
2026-06-14 N9439E - Jun 14, 19:20 UTCJun 14, 19:45 UTC25m
2026-06-14 N9439E - Jun 14, 14:50 UTCJun 14, 15:45 UTC55m
2026-06-13 N9439E - Jun 13, 15:00 UTCJun 13, 15:35 UTC35m
2026-06-12 N9439E - Jun 12, 14:45 UTCJun 12, 15:50 UTC1h 5m
2026-06-11 N9439E - Jun 11, 19:25 UTCJun 11, 19:50 UTC25m
2026-06-11 N9439E - Jun 11, 18:05 UTCJun 11, 18:30 UTC25m
2026-06-11 N9439E - Jun 11, 15:30 UTCJun 11, 15:55 UTC25m
2026-06-10 N9439E - Jun 10, 19:45 UTCJun 10, 20:15 UTC30m
2026-06-10 N9439E - Jun 10, 18:35 UTCJun 10, 18:55 UTC20m
2026-06-09 N9439E - Jun 9, 14:55 UTCJun 9, 15:50 UTC55m
2026-06-09 N9439E - Jun 9, 12:35 UTCJun 9, 13:20 UTC45m
2026-06-08 N9439E - Jun 8, 18:55 UTCJun 8, 19:45 UTC50m
2026-06-08 N9439E - Jun 8, 16:50 UTCJun 8, 17:35 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 N9439E page for operator, model, and routing details .

Mode-S AD1BE5 frequently asked

What is Mode-S code AD1BE5?
AD1BE5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9439E.
Where is Mode-S AD1BE5 registered?
Mode-S code AD1BE5 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AD1BE5 broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD1BE5, octal 53215745, decimal 11,344,869.
What flights does AD1BE5 operate?
Mode-S AD1BE5 has broadcast 1 distinct callsign, including N9439E.