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sensors Mode-S transponder

A9ED27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N739GY · CESSNA 172 Skyhawk · operated by RADECKI FRANCIS R, RADECKI M CAROL

Hex
A9ED27
Octal
52366447
Decimal
11,136,295
Country
US
Tail
N739GY
Type
C172
No current signal · last broadcast 5h ago
Flights observed
189
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A9ED27.

Country allocation

The ICAO 24-bit address A9ED27 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
N739GY - 189 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N739GY SAC → SAC Jul 18, 03:50 UTCJul 18, 04:00 UTC10m
2026-07-18 N739GY SAC → SAC Jul 18, 00:25 UTCJul 18, 01:39 UTC1h 15m
2026-07-16 N739GY SAC → SAC Jul 16, 19:40 UTCJul 16, 20:45 UTC1h 5m
2026-07-16 N739GY SAC → SAC Jul 16, 17:49 UTCJul 16, 18:50 UTC1h 0m
2026-07-10 N739GY SAC → SAC Jul 10, 18:50 UTCJul 10, 20:20 UTC1h 30m
2026-07-10 N739GY SAC → SAC Jul 10, 16:05 UTCJul 10, 16:45 UTC40m
2026-07-09 N739GY SAC → SAC Jul 9, 16:25 UTCJul 9, 17:50 UTC1h 25m
2026-07-09 N739GY SAC → SAC Jul 9, 13:55 UTCJul 9, 15:15 UTC1h 20m
2026-07-08 N739GY SAC → SAC Jul 8, 19:00 UTCJul 8, 19:55 UTC55m
2026-07-08 N739GY - Jul 8, 17:25 UTCJul 8, 18:00 UTC35m
2026-07-08 N739GY SAC → SAC Jul 8, 14:30 UTCJul 8, 15:30 UTC1h 0m
2026-07-08 N739GY SAC → SAC Jul 8, 01:15 UTCJul 8, 02:20 UTC1h 5m
2026-07-07 N739GY SAC → SAC Jul 7, 22:20 UTCJul 7, 23:45 UTC1h 25m
2026-07-07 N739GY SAC → SAC Jul 7, 18:55 UTCJul 7, 19:40 UTC45m
2026-07-07 N739GY SAC → SAC Jul 7, 16:30 UTCJul 7, 17:45 UTC1h 15m
2026-07-04 N739GY SAC → SAC Jul 4, 19:20 UTCJul 4, 20:25 UTC1h 5m
2026-07-02 N739GY - Jul 2, 21:30 UTCJul 2, 22:45 UTC1h 15m
2026-07-02 N739GY SAC → RDD Jul 2, 18:15 UTCJul 2, 19:35 UTC1h 20m
2026-07-02 N739GY SAC → SAC Jul 2, 03:50 UTCJul 2, 05:25 UTC1h 35m
2026-07-02 N739GY SAC → SAC Jul 2, 02:10 UTCJul 2, 02:45 UTC35m
2026-06-29 N739GY SAC → SAC Jun 29, 23:34 UTCJun 30, 00:49 UTC1h 15m
2026-06-29 N739GY SAC → SAC Jun 29, 19:49 UTCJun 29, 20:54 UTC1h 5m
2026-06-29 N739GY SAC → SAC Jun 29, 17:10 UTCJun 29, 18:14 UTC1h 5m
2026-06-29 N739GY - Jun 29, 14:50 UTCJun 29, 15:49 UTC1h 0m
2026-06-29 N739GY SAC → SAC Jun 29, 02:14 UTCJun 29, 02:25 UTC10m
2026-06-29 N739GY SAC → SAC Jun 29, 01:50 UTCJun 29, 02:09 UTC20m
2026-06-28 N739GY SAC → SAC Jun 28, 17:50 UTCJun 28, 18:10 UTC20m
2026-06-28 N739GY SAC → SAC Jun 28, 15:20 UTCJun 28, 16:05 UTC45m
2026-06-28 N739GY SAC → SAC Jun 28, 02:25 UTCJun 28, 03:00 UTC35m
2026-06-28 N739GY SAC → SAC Jun 28, 02:05 UTCJun 28, 02:20 UTC15m
2026-06-27 N739GY - Jun 27, 22:20 UTCJun 27, 22:55 UTC35m
2026-06-27 N739GY - Jun 27, 19:34 UTCJun 27, 20:14 UTC40m
2026-06-27 N739GY - Jun 27, 17:55 UTCJun 27, 18:39 UTC45m
2026-06-27 N739GY SAC → SAC Jun 27, 16:00 UTCJun 27, 16:44 UTC45m
2026-06-27 N739GY - Jun 27, 05:19 UTCJun 27, 05:44 UTC25m
2026-06-27 N739GY SAC → MCC Jun 27, 04:54 UTCJun 27, 05:15 UTC20m
2026-06-27 N739GY SAC → SAC Jun 27, 01:00 UTCJun 27, 01:59 UTC1h 0m
2026-06-26 N739GY SAC → SAC Jun 26, 15:34 UTCJun 26, 16:44 UTC1h 10m
2026-06-26 N739GY - Jun 26, 00:05 UTCJun 26, 00:15 UTC10m
2026-06-25 N739GY SAC → SAC Jun 25, 13:59 UTCJun 25, 15:24 UTC1h 25m
2026-06-21 N739GY SAC → SAC Jun 21, 20:24 UTCJun 21, 20:40 UTC15m
2026-06-21 N739GY - Jun 21, 18:35 UTCJun 21, 18:54 UTC20m
2026-06-21 N739GY SAC → SAC Jun 21, 04:49 UTCJun 21, 06:44 UTC1h 55m
2026-06-20 N739GY - Jun 20, 22:14 UTCJun 20, 23:04 UTC50m
2026-06-20 N739GY - Jun 20, 20:09 UTCJun 20, 20:49 UTC40m
2026-06-19 N739GY SAC → SAC Jun 19, 18:20 UTCJun 19, 18:44 UTC25m
2026-06-19 N739GY MOD → SAC Jun 19, 04:19 UTCJun 19, 05:00 UTC40m
2026-06-19 N739GY SAC → MOD Jun 19, 01:45 UTCJun 19, 03:44 UTC2h 0m
2026-06-18 N739GY SAC → SAC Jun 18, 23:15 UTCJun 19, 00:10 UTC54m
2026-06-18 N739GY - Jun 18, 21:30 UTCJun 18, 22:35 UTC1h 5m

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 N739GY page for operator, model, and routing details .

Mode-S A9ED27 frequently asked

What is Mode-S code A9ED27?
A9ED27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N739GY.
Where is Mode-S A9ED27 registered?
Mode-S code A9ED27 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 A9ED27 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9ED27, octal 52366447, decimal 11,136,295.
What flights does A9ED27 operate?
Mode-S A9ED27 has broadcast 1 distinct callsign, including N739GY.