Apparatus

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sensors Mode-S transponder

A33A39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N307KE · operated by KILO BRAVO HOLDINGS LLC

Hex
A33A39
Octal
50635071
Decimal
10,697,273
Country
US
Tail
N307KE
No current signal · last broadcast 14d ago
Flights observed
20
Distinct callsigns
1
Country
US
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S A33A39.

Country allocation

The ICAO 24-bit address A33A39 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
N307KE - 20 2026-07-03

Recent flights last 20

DateFlightRouteTakeoffLandingDuration
2026-07-03 N307KE - Jul 3, 20:05 UTCJul 3, 21:10 UTC1h 5m
2026-07-03 N307KE - Jul 3, 17:30 UTCJul 3, 17:55 UTC25m
2026-07-03 N307KE - Jul 3, 15:25 UTCJul 3, 15:50 UTC25m
2026-07-03 N307KE - Jul 3, 03:10 UTCJul 3, 03:55 UTC45m
2026-07-03 N307KE - Jul 3, 02:30 UTCJul 3, 02:40 UTC10m
2026-07-03 N307KE - Jul 3, 01:40 UTCJul 3, 02:15 UTC35m
2026-07-03 N307KE COE → SFF Jul 3, 00:45 UTCJul 3, 01:05 UTC20m
2026-07-02 N307KE COE → COE Jul 2, 20:45 UTCJul 2, 21:25 UTC40m
2026-06-30 N307KE COE → COE Jun 30, 22:05 UTCJun 30, 22:15 UTC10m
2026-06-27 N307KE - Jun 27, 19:05 UTCJun 27, 19:19 UTC15m
2026-06-27 N307KE - Jun 27, 16:59 UTCJun 27, 17:09 UTC10m
2026-06-24 N307KE - Jun 24, 22:04 UTCJun 24, 22:29 UTC25m
2026-06-24 N307KE - Jun 24, 16:45 UTCJun 24, 17:10 UTC25m
2026-06-23 N307KE COE → COE Jun 23, 23:55 UTCJun 24, 00:30 UTC35m
2026-06-21 N307KE - Jun 21, 18:04 UTCJun 21, 18:14 UTC10m
2026-06-21 N307KE - Jun 21, 16:14 UTCJun 21, 16:25 UTC10m
2026-06-20 N307KE - Jun 20, 23:29 UTCJun 20, 23:59 UTC30m
2026-06-20 N307KE - Jun 20, 18:29 UTCJun 20, 19:34 UTC1h 5m
2026-06-20 N307KE COE → COE Jun 20, 15:29 UTCJun 20, 16:09 UTC40m
2026-06-19 N307KE COE → COE Jun 19, 00:20 UTCJun 19, 00:49 UTC30m

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 N307KE page for operator, model, and routing details .

Mode-S A33A39 frequently asked

What is Mode-S code A33A39?
A33A39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N307KE.
Where is Mode-S A33A39 registered?
Mode-S code A33A39 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 A33A39 broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A33A39, octal 50635071, decimal 10,697,273.
What flights does A33A39 operate?
Mode-S A33A39 has broadcast 1 distinct callsign, including N307KE.