Apparatus

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sensors Mode-S transponder

A070F0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1276U · CESSNA 172 Skyhawk · operated by STELHAM CO

Hex
A070F0
Octal
50070360
Decimal
10,514,672
Country
US
Tail
N1276U
Type
C172
No current signal · last broadcast 12d ago
Flights observed
70
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A070F0.

Country allocation

The ICAO 24-bit address A070F0 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
N1276U - 70 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N1276U - Jul 26, 20:15 UTCJul 26, 21:25 UTC1h 10m
2026-07-26 N1276U - Jul 26, 18:45 UTCJul 26, 18:55 UTC10m
2026-07-26 N1276U - Jul 26, 17:35 UTCJul 26, 17:45 UTC10m
2026-07-24 N1276U - Jul 24, 21:50 UTCJul 24, 22:35 UTC45m
2026-07-24 N1276U - Jul 24, 13:50 UTCJul 24, 14:20 UTC30m
2026-07-24 N1276U - Jul 24, 00:50 UTCJul 24, 01:50 UTC1h 0m
2026-07-23 N1276U - Jul 23, 21:40 UTCJul 23, 22:35 UTC55m
2026-07-23 N1276U - Jul 23, 20:05 UTCJul 23, 20:45 UTC40m
2026-07-22 N1276U OLV → OLV Jul 22, 19:10 UTCJul 22, 19:40 UTC30m
2026-07-21 N1276U - Jul 21, 17:35 UTCJul 21, 17:55 UTC20m
2026-07-21 N1276U OLV → OLV Jul 21, 15:40 UTCJul 21, 16:35 UTC55m
2026-07-21 N1276U - Jul 21, 13:50 UTCJul 21, 14:40 UTC50m
2026-07-20 N1276U - Jul 20, 17:40 UTCJul 20, 18:40 UTC1h 0m
2026-07-20 N1276U - Jul 20, 15:50 UTCJul 20, 16:50 UTC1h 0m
2026-07-20 N1276U - Jul 20, 14:00 UTCJul 20, 14:45 UTC45m
2026-07-18 N1276U - Jul 18, 13:45 UTCJul 18, 14:05 UTC20m
2026-07-17 N1276U - Jul 17, 15:55 UTCJul 17, 16:55 UTC1h 0m
2026-07-17 N1276U OLV → OLV Jul 17, 13:40 UTCJul 17, 14:35 UTC55m
2026-07-17 N1276U - Jul 17, 11:50 UTCJul 17, 12:35 UTC45m
2026-07-16 N1276U - Jul 16, 22:10 UTCJul 16, 22:55 UTC45m
2026-07-16 N1276U - Jul 16, 19:45 UTCJul 16, 20:29 UTC45m
2026-07-16 N1276U - Jul 16, 18:10 UTCJul 16, 18:50 UTC40m
2026-07-16 N1276U - Jul 16, 15:49 UTCJul 16, 16:35 UTC45m
2026-07-14 N1276U - Jul 14, 16:10 UTCJul 14, 16:45 UTC35m
2026-07-14 N1276U - Jul 14, 11:45 UTCJul 14, 12:35 UTC50m
2026-07-13 N1276U OLV → OLV Jul 13, 17:05 UTCJul 13, 18:15 UTC1h 10m
2026-07-13 N1276U - Jul 13, 13:55 UTCJul 13, 14:35 UTC40m
2026-07-11 N1276U - Jul 11, 20:35 UTCJul 11, 21:10 UTC35m
2026-07-11 N1276U - Jul 11, 17:50 UTCJul 11, 18:35 UTC45m
2026-07-11 N1276U - Jul 11, 13:55 UTCJul 11, 14:25 UTC30m
2026-07-11 N1276U - Jul 11, 01:50 UTCJul 11, 02:15 UTC25m
2026-07-10 N1276U - Jul 10, 22:40 UTCJul 10, 22:50 UTC10m
2026-07-10 N1276U - Jul 10, 11:45 UTCJul 10, 12:20 UTC35m
2026-07-09 N1276U - Jul 9, 18:20 UTCJul 9, 18:55 UTC35m
2026-07-09 N1276U - Jul 9, 15:50 UTCJul 9, 16:25 UTC35m
2026-07-04 N1276U - Jul 4, 14:05 UTCJul 4, 14:35 UTC30m
2026-07-02 N1276U - Jul 2, 17:50 UTCJul 2, 18:50 UTC1h 0m
2026-07-02 N1276U - Jul 2, 15:30 UTCJul 2, 15:50 UTC20m
2026-07-02 N1276U OLV → OLV Jul 2, 13:40 UTCJul 2, 14:45 UTC1h 5m
2026-07-01 N1276U - Jul 1, 19:45 UTCJul 1, 20:25 UTC40m
2026-07-01 N1276U - Jul 1, 15:45 UTCJul 1, 16:30 UTC45m
2026-07-01 N1276U - Jul 1, 14:00 UTCJul 1, 14:35 UTC35m
2026-06-30 N1276U - Jun 30, 19:35 UTCJun 30, 20:15 UTC40m
2026-06-30 N1276U - Jun 30, 18:25 UTCJun 30, 18:50 UTC25m
2026-06-30 N1276U - Jun 30, 15:40 UTCJun 30, 16:35 UTC55m
2026-06-30 N1276U - Jun 30, 13:50 UTCJun 30, 14:30 UTC40m
2026-06-29 N1276U - Jun 29, 21:39 UTCJun 29, 22:30 UTC50m
2026-06-29 N1276U - Jun 29, 18:30 UTCJun 29, 18:44 UTC15m
2026-06-29 N1276U - Jun 29, 15:39 UTCJun 29, 16:19 UTC40m
2026-06-29 N1276U - Jun 29, 13:44 UTCJun 29, 14:29 UTC45m

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 N1276U page for operator, model, and routing details .

Mode-S A070F0 frequently asked

What is Mode-S code A070F0?
A070F0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1276U.
Where is Mode-S A070F0 registered?
Mode-S code A070F0 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 A070F0 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 A070F0, octal 50070360, decimal 10,514,672.
What flights does A070F0 operate?
Mode-S A070F0 has broadcast 1 distinct callsign, including N1276U.