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sensors Mode-S transponder

A0079D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1004E · CESSNA 172 Skyhawk · operated by UNISON AIR LLC

Hex
A0079D
Octal
50003635
Decimal
10,487,709
Country
US
Tail
N1004E
Type
C172
No current signal · last broadcast 24d ago
Flights observed
156
Distinct callsigns
1
Country
US
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S A0079D.

Country allocation

The ICAO 24-bit address A0079D 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
N1004E - 156 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N1004E PAO → SAC Jul 25, 18:15 UTCJul 25, 19:00 UTC45m
2026-07-24 N1004E PAO → PAO Jul 24, 21:05 UTCJul 24, 22:15 UTC1h 10m
2026-07-24 N1004E PAO → PAO Jul 24, 17:30 UTCJul 24, 19:00 UTC1h 30m
2026-07-23 N1004E - Jul 23, 17:50 UTCJul 23, 19:00 UTC1h 10m
2026-07-23 N1004E - Jul 23, 17:05 UTCJul 23, 17:40 UTC35m
2026-07-23 N1004E PAO → PAO Jul 23, 00:50 UTCJul 23, 01:40 UTC50m
2026-07-22 N1004E PAO → PAO Jul 22, 21:35 UTCJul 22, 23:20 UTC1h 45m
2026-07-21 N1004E PAO → PAO Jul 21, 16:20 UTCJul 21, 16:50 UTC30m
2026-07-20 N1004E - Jul 20, 20:05 UTCJul 20, 21:05 UTC1h 0m
2026-07-20 N1004E - Jul 20, 19:05 UTCJul 20, 19:40 UTC35m
2026-07-19 N1004E PAO → PAO Jul 19, 17:40 UTCJul 19, 18:20 UTC40m
2026-07-18 N1004E - Jul 18, 21:15 UTCJul 18, 21:55 UTC40m
2026-07-18 N1004E - Jul 18, 18:10 UTCJul 18, 18:50 UTC40m
2026-07-17 N1004E PAO → PAO Jul 17, 02:25 UTCJul 17, 03:25 UTC1h 0m
2026-07-16 N1004E WVI → PAO Jul 16, 23:15 UTCJul 16, 23:40 UTC25m
2026-07-16 N1004E - Jul 16, 21:55 UTCJul 16, 22:40 UTC45m
2026-07-16 N1004E PAO → PAO Jul 16, 16:55 UTCJul 16, 18:15 UTC1h 20m
2026-07-16 N1004E PAO → PAO Jul 16, 04:30 UTCJul 16, 07:40 UTC3h 10m
2026-07-16 N1004E PAO → PAO Jul 16, 00:55 UTCJul 16, 01:20 UTC25m
2026-07-15 N1004E PAO → PAO Jul 15, 21:45 UTCJul 15, 23:00 UTC1h 15m
2026-07-15 N1004E PAO → PAO Jul 15, 15:15 UTCJul 15, 16:10 UTC55m
2026-07-14 N1004E - Jul 14, 22:30 UTCJul 14, 22:40 UTC10m
2026-07-14 N1004E PAO → PAO Jul 14, 22:15 UTCJul 14, 22:25 UTC10m
2026-07-14 N1004E PAO → PAO Jul 14, 20:35 UTCJul 14, 22:10 UTC1h 35m
2026-07-14 N1004E MOD → PAO Jul 14, 01:30 UTCJul 14, 02:15 UTC45m
2026-07-14 N1004E - Jul 14, 00:05 UTCJul 14, 00:40 UTC35m
2026-07-11 N1004E PAO → PAO Jul 11, 19:25 UTCJul 11, 21:20 UTC1h 55m
2026-07-10 N1004E PAO → PAO Jul 10, 23:50 UTCJul 11, 02:15 UTC2h 25m
2026-07-10 N1004E PAO → PAO Jul 10, 19:00 UTCJul 10, 20:35 UTC1h 35m
2026-07-09 N1004E PAO → PAO Jul 9, 17:30 UTCJul 9, 17:35 UTC5m
2026-07-08 N1004E PAO → PAO Jul 8, 01:05 UTCJul 8, 02:00 UTC55m
2026-07-07 N1004E - Jul 7, 20:20 UTCJul 7, 20:25 UTC5m
2026-07-07 N1004E PAO → PAO Jul 7, 19:55 UTCJul 7, 20:10 UTC15m
2026-07-07 N1004E PAO → PAO Jul 7, 19:40 UTCJul 7, 19:50 UTC10m
2026-07-07 N1004E - Jul 7, 19:25 UTCJul 7, 19:35 UTC10m
2026-07-06 N1004E PAO → PAO Jul 6, 04:50 UTCJul 6, 05:25 UTC35m
2026-07-05 N1004E PAO → PAO Jul 5, 23:10 UTCJul 6, 00:20 UTC1h 10m
2026-07-05 N1004E PAO → PAO Jul 5, 17:30 UTCJul 5, 18:50 UTC1h 20m
2026-07-04 N1004E PAO → PAO Jul 4, 21:40 UTCJul 4, 23:55 UTC2h 15m
2026-07-04 N1004E SQL → PAO Jul 4, 03:50 UTCJul 4, 04:00 UTC10m
2026-07-04 N1004E RHV → SQL Jul 4, 03:15 UTCJul 4, 03:45 UTC30m
2026-07-04 N1004E PAO → SJC Jul 4, 02:55 UTCJul 4, 03:05 UTC10m
2026-07-03 N1004E PAO → PAO Jul 3, 22:55 UTCJul 4, 00:40 UTC1h 45m
2026-07-03 N1004E PAO → PAO Jul 3, 20:05 UTCJul 3, 21:50 UTC1h 45m
2026-07-03 N1004E PAO → PAO Jul 3, 17:45 UTCJul 3, 18:00 UTC15m
2026-07-03 N1004E PAO → PAO Jul 3, 16:30 UTCJul 3, 17:35 UTC1h 5m
2026-07-02 N1004E PAO → PAO Jul 2, 19:10 UTCJul 2, 19:45 UTC35m
2026-07-01 N1004E PAO → PAO Jul 1, 20:40 UTCJul 1, 21:55 UTC1h 15m
2026-07-01 N1004E PAO → PAO Jul 1, 03:15 UTCJul 1, 03:20 UTC5m
2026-07-01 N1004E PAO → PAO Jul 1, 01:25 UTCJul 1, 03:10 UTC1h 45m

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 N1004E page for operator, model, and routing details .

Mode-S A0079D frequently asked

What is Mode-S code A0079D?
A0079D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1004E.
Where is Mode-S A0079D registered?
Mode-S code A0079D 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 A0079D broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0079D, octal 50003635, decimal 10,487,709.
What flights does A0079D operate?
Mode-S A0079D has broadcast 1 distinct callsign, including N1004E.