Apparatus

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sensors Mode-S transponder

A6E640

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5436E · CESSNA 172 Skyhawk · operated by KITSAP AVIATION SQUADRON INC

Hex
A6E640
Octal
51563100
Decimal
10,937,920
Country
US
Tail
N5436E
Type
C172
No current signal · last broadcast 2d ago
Flights observed
82
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A6E640.

Country allocation

The ICAO 24-bit address A6E640 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
N5436E - 82 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N5436E PWT → BLI Jul 26, 17:50 UTCJul 26, 18:55 UTC1h 5m
2026-07-25 N5436E - Jul 25, 01:25 UTCJul 25, 01:45 UTC20m
2026-07-24 N5436E PWT → PWT Jul 24, 21:55 UTCJul 24, 23:30 UTC1h 35m
2026-07-24 N5436E PWT → PWT Jul 24, 01:50 UTCJul 24, 02:55 UTC1h 5m
2026-07-21 N5436E - Jul 21, 23:10 UTCJul 22, 00:00 UTC50m
2026-07-21 N5436E - Jul 21, 16:50 UTCJul 21, 17:30 UTC40m
2026-07-20 N5436E - Jul 20, 21:50 UTCJul 20, 22:40 UTC50m
2026-07-20 N5436E - Jul 20, 18:35 UTCJul 20, 19:25 UTC50m
2026-07-17 N5436E - Jul 17, 18:40 UTCJul 17, 19:35 UTC55m
2026-07-10 N5436E - Jul 10, 00:35 UTCJul 10, 01:25 UTC50m
2026-07-07 N5436E - Jul 7, 21:35 UTCJul 7, 22:00 UTC25m
2026-07-07 N5436E - Jul 7, 19:00 UTCJul 7, 19:25 UTC25m
2026-07-07 N5436E WDN → PWT Jul 7, 01:05 UTCJul 7, 02:40 UTC1h 35m
2026-07-06 N5436E PWT → ESD Jul 6, 17:10 UTCJul 6, 18:00 UTC50m
2026-07-05 N5436E - Jul 5, 22:25 UTCJul 5, 23:30 UTC1h 5m
2026-07-05 N5436E - Jul 5, 18:00 UTCJul 5, 19:00 UTC1h 0m
2026-07-05 N5436E - Jul 5, 17:05 UTCJul 5, 17:20 UTC15m
2026-07-05 N5436E - Jul 5, 00:20 UTCJul 5, 00:45 UTC25m
2026-07-03 N5436E PWT → PWT Jul 3, 20:55 UTCJul 3, 21:10 UTC15m
2026-07-02 N5436E PWT → PWT Jul 2, 19:55 UTCJul 2, 20:45 UTC50m
2026-06-30 N5436E - Jun 30, 20:15 UTCJun 30, 20:40 UTC25m
2026-06-30 N5436E - Jun 30, 17:50 UTCJun 30, 19:05 UTC1h 15m
2026-06-27 N5436E - Jun 27, 22:20 UTCJun 27, 23:04 UTC45m
2026-06-27 N5436E - Jun 27, 19:34 UTCJun 27, 20:39 UTC1h 5m
2026-06-26 N5436E TIW → PWT Jun 26, 02:00 UTCJun 26, 04:10 UTC2h 10m
2026-06-25 N5436E PWT → TIW Jun 25, 23:55 UTCJun 26, 00:50 UTC55m
2026-06-24 N5436E - Jun 24, 23:59 UTCJun 25, 00:29 UTC30m
2026-06-18 N5436E - Jun 18, 21:30 UTCJun 18, 22:05 UTC35m
2026-06-17 N5436E PWT → PWT Jun 17, 19:35 UTCJun 17, 20:05 UTC30m
2026-06-13 N5436E - Jun 13, 01:45 UTCJun 13, 02:05 UTC20m
2026-06-12 N5436E - Jun 12, 23:45 UTCJun 13, 01:10 UTC1h 25m
2026-06-12 N5436E - Jun 12, 12:30 UTCJun 12, 14:10 UTC1h 40m
2026-06-11 N5436E - Jun 11, 21:10 UTCJun 11, 21:55 UTC45m
2026-06-11 N5436E - Jun 11, 18:30 UTCJun 11, 19:15 UTC45m
2026-06-04 N5436E PWT → PWT Jun 4, 00:25 UTCJun 4, 01:20 UTC55m
2026-06-02 N5436E - Jun 2, 21:35 UTCJun 2, 22:05 UTC30m
2026-06-02 N5436E - Jun 2, 18:45 UTCJun 2, 19:25 UTC40m
2026-06-01 N5436E - Jun 1, 21:50 UTCJun 1, 22:35 UTC45m
2026-06-01 N5436E - Jun 1, 18:50 UTCJun 1, 19:00 UTC10m
2026-05-30 N5436E - May 30, 20:25 UTCMay 30, 21:05 UTC40m
2026-05-29 N5436E - May 29, 01:45 UTCMay 29, 02:40 UTC55m
2026-05-28 N5436E - May 28, 22:20 UTCMay 28, 23:10 UTC50m
2026-05-28 N5436E - May 28, 17:00 UTCMay 28, 17:50 UTC50m
2026-05-28 N5436E - May 28, 00:10 UTCMay 28, 01:40 UTC1h 30m
2026-05-27 N5436E PWT → PWT May 27, 22:20 UTCMay 27, 23:20 UTC1h 0m
2026-05-27 N5436E PWT → PWT May 27, 16:45 UTCMay 27, 17:20 UTC35m
2026-05-26 N5436E PWT → PWT May 26, 22:44 UTCMay 26, 23:45 UTC1h 0m
2026-05-24 N5436E - May 24, 01:00 UTCMay 24, 01:45 UTC45m
2026-05-23 N5436E - May 23, 23:20 UTCMay 24, 00:25 UTC1h 5m
2026-05-23 N5436E - May 23, 20:25 UTCMay 23, 22:45 UTC2h 20m

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 N5436E page for operator, model, and routing details .

Mode-S A6E640 frequently asked

What is Mode-S code A6E640?
A6E640 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5436E.
Where is Mode-S A6E640 registered?
Mode-S code A6E640 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 A6E640 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6E640, octal 51563100, decimal 10,937,920.
What flights does A6E640 operate?
Mode-S A6E640 has broadcast 1 distinct callsign, including N5436E.