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sensors Mode-S transponder

A8D891

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N6694E · CESSNA 172 Skyhawk · operated by THUNDERBIRD AVIATION LLC

Hex
A8D891
Octal
52154221
Decimal
11,065,489
Country
US
Tail
N6694E
Type
C172
No current signal · last broadcast 12d ago
Flights observed
51
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A8D891.

Country allocation

The ICAO 24-bit address A8D891 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
N6694E - 51 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N6694E WBU → WBU Jul 25, 22:15 UTCJul 25, 22:45 UTC30m
2026-07-25 N6694E - Jul 25, 18:15 UTCJul 25, 18:55 UTC40m
2026-07-22 N6694E - Jul 22, 17:50 UTCJul 22, 18:10 UTC20m
2026-07-22 N6694E - Jul 22, 13:55 UTCJul 22, 15:20 UTC1h 25m
2026-07-18 N6694E WBU → WBU Jul 18, 17:10 UTCJul 18, 17:55 UTC45m
2026-07-18 N6694E WBU → WBU Jul 18, 14:40 UTCJul 18, 15:50 UTC1h 10m
2026-07-17 N6694E - Jul 17, 16:49 UTCJul 17, 17:44 UTC55m
2026-07-17 N6694E - Jul 17, 15:05 UTCJul 17, 16:04 UTC1h 0m
2026-07-16 N6694E - Jul 16, 16:55 UTCJul 16, 18:05 UTC1h 10m
2026-07-15 N6694E WBU → WBU Jul 15, 19:50 UTCJul 15, 20:10 UTC20m
2026-07-15 N6694E - Jul 15, 18:15 UTCJul 15, 18:55 UTC40m
2026-07-15 N6694E - Jul 15, 16:10 UTCJul 15, 17:00 UTC50m
2026-07-14 N6694E - Jul 14, 18:15 UTCJul 14, 19:05 UTC50m
2026-07-13 N6694E - Jul 13, 18:00 UTCJul 13, 18:40 UTC40m
2026-07-13 N6694E - Jul 13, 16:00 UTCJul 13, 17:00 UTC1h 0m
2026-07-12 N6694E - Jul 12, 14:50 UTCJul 12, 15:50 UTC1h 0m
2026-07-11 N6694E WBU → WBU Jul 11, 22:55 UTCJul 11, 23:30 UTC35m
2026-07-11 N6694E WBU → WBU Jul 11, 16:40 UTCJul 11, 18:45 UTC2h 5m
2026-07-11 N6694E WBU → WBU Jul 11, 14:45 UTCJul 11, 15:40 UTC55m
2026-07-10 N6694E - Jul 10, 21:50 UTCJul 10, 22:20 UTC30m
2026-07-10 N6694E - Jul 10, 14:50 UTCJul 10, 15:55 UTC1h 5m
2026-07-08 N6694E - Jul 8, 15:25 UTCJul 8, 16:05 UTC40m
2026-07-07 N6694E - Jul 7, 18:40 UTCJul 7, 19:50 UTC1h 10m
2026-07-07 N6694E WBU → WBU Jul 7, 16:55 UTCJul 7, 17:50 UTC55m
2026-07-06 N6694E - Jul 6, 19:00 UTCJul 6, 19:20 UTC20m
2026-07-06 N6694E - Jul 6, 16:45 UTCJul 6, 17:10 UTC25m
2026-07-05 N6694E - Jul 5, 16:55 UTCJul 5, 17:45 UTC50m
2026-07-05 N6694E WBU → WBU Jul 5, 14:40 UTCJul 5, 15:45 UTC1h 5m
2026-07-04 N6694E - Jul 4, 19:30 UTCJul 4, 20:40 UTC1h 10m
2026-07-04 N6694E - Jul 4, 17:40 UTCJul 4, 18:25 UTC45m
2026-06-30 N6694E - Jun 30, 16:35 UTCJun 30, 17:35 UTC1h 0m
2026-06-28 N6694E - Jun 28, 14:34 UTCJun 28, 15:44 UTC1h 10m
2026-06-27 N6694E - Jun 27, 17:34 UTCJun 27, 18:15 UTC40m
2026-06-27 N6694E WBU → WBU Jun 27, 14:35 UTCJun 27, 15:39 UTC1h 5m
2026-06-26 N6694E WBU → WBU Jun 26, 23:19 UTCJun 27, 00:05 UTC45m
2026-06-26 N6694E - Jun 26, 19:09 UTCJun 26, 20:44 UTC1h 35m
2026-06-26 N6694E - Jun 26, 17:00 UTCJun 26, 17:54 UTC55m
2026-06-24 N6694E WBU → WBU Jun 24, 20:49 UTCJun 24, 21:09 UTC20m
2026-06-24 N6694E WBU → WBU Jun 24, 14:55 UTCJun 24, 15:49 UTC55m
2026-06-20 N6694E - Jun 20, 16:05 UTCJun 20, 16:59 UTC55m
2026-06-20 N6694E WBU → WBU Jun 20, 13:44 UTCJun 20, 14:35 UTC50m
2026-06-18 N6694E - Jun 18, 18:35 UTCJun 18, 20:20 UTC1h 45m
2026-06-18 N6694E - Jun 18, 17:15 UTCJun 18, 17:40 UTC25m
2026-06-16 N6694E - Jun 16, 16:30 UTCJun 16, 17:05 UTC35m
2026-06-15 N6694E - Jun 15, 22:45 UTCJun 16, 00:00 UTC1h 15m
2026-06-15 N6694E - Jun 15, 16:49 UTCJun 15, 17:54 UTC1h 5m
2026-06-14 N6694E - Jun 14, 16:55 UTCJun 14, 18:05 UTC1h 10m
2026-06-14 N6694E - Jun 14, 15:30 UTCJun 14, 15:55 UTC25m
2026-06-13 N6694E WBU → WBU Jun 13, 21:25 UTCJun 13, 21:55 UTC30m
2026-06-13 N6694E - Jun 13, 19:55 UTCJun 13, 20:20 UTC25m

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 N6694E page for operator, model, and routing details .

Mode-S A8D891 frequently asked

What is Mode-S code A8D891?
A8D891 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N6694E.
Where is Mode-S A8D891 registered?
Mode-S code A8D891 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 A8D891 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8D891, octal 52154221, decimal 11,065,489.
What flights does A8D891 operate?
Mode-S A8D891 has broadcast 1 distinct callsign, including N6694E.