Apparatus

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sensors Mode-S transponder

AD942B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N974TA · CESSNA 172 Skyhawk · operated by SKY PEAK AVIATION LLC

Hex
AD942B
Octal
53312053
Decimal
11,375,659
Country
US
Tail
N974TA
Type
C172
No current signal · last broadcast 9h ago
Flights observed
33
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S AD942B.

Country allocation

The ICAO 24-bit address AD942B 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
N974TA - 33 2026-05-29

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-05-29 N974TA SMO → SMO May 29, 17:25 UTCMay 29, 17:55 UTC30m
2026-04-19 N974TA - Apr 19, 18:45 UTCApr 19, 19:00 UTC15m
2026-04-19 N974TA SMO → SMO Apr 19, 00:55 UTCApr 19, 01:55 UTC1h 0m
2026-04-18 N974TA - Apr 18, 23:10 UTCApr 18, 23:45 UTC35m
2026-04-18 N974TA - Apr 18, 21:40 UTCApr 18, 22:15 UTC35m
2026-04-18 N974TA SMO → SMO Apr 18, 18:00 UTCApr 18, 18:50 UTC50m
2026-04-18 N974TA - Apr 18, 05:25 UTCApr 18, 06:20 UTC55m
2026-04-18 N974TA - Apr 18, 05:05 UTCApr 18, 05:20 UTC15m
2026-04-18 N974TA - Apr 18, 01:25 UTCApr 18, 01:50 UTC25m
2026-04-18 N974TA - Apr 18, 00:40 UTCApr 18, 01:20 UTC40m
2026-04-17 N974TA SMO → SMO Apr 17, 21:50 UTCApr 17, 22:50 UTC1h 0m
2026-04-17 N974TA - Apr 17, 20:05 UTCApr 17, 20:50 UTC45m
2026-04-17 N974TA - Apr 17, 17:25 UTCApr 17, 17:45 UTC20m
2026-04-17 N974TA - Apr 17, 17:05 UTCApr 17, 17:15 UTC10m
2026-04-17 N974TA - Apr 17, 15:45 UTCApr 17, 16:35 UTC50m
2026-04-17 N974TA SMO → SMO Apr 17, 01:40 UTCApr 17, 02:30 UTC50m
2026-04-16 N974TA SMO → SMO Apr 16, 21:30 UTCApr 16, 22:50 UTC1h 20m
2026-04-16 N974TA CPM → SMO Apr 16, 17:15 UTCApr 16, 18:00 UTC45m
2026-04-16 N974TA - Apr 16, 16:55 UTCApr 16, 17:10 UTC15m
2026-04-15 N974TA - Apr 15, 20:05 UTCApr 15, 20:55 UTC50m
2026-04-15 N974TA - Apr 15, 17:05 UTCApr 15, 17:50 UTC45m
2026-04-15 N974TA - Apr 15, 00:55 UTCApr 15, 01:40 UTC45m
2026-04-14 N974TA - Apr 14, 23:35 UTCApr 15, 00:50 UTC1h 15m
2026-04-14 N974TA - Apr 14, 20:55 UTCApr 14, 22:10 UTC1h 15m
2026-04-14 N974TA - Apr 14, 20:00 UTCApr 14, 20:50 UTC50m
2026-04-14 N974TA - Apr 14, 16:50 UTCApr 14, 17:45 UTC55m
2026-04-14 N974TA - Apr 14, 14:50 UTCApr 14, 15:50 UTC1h 0m
2026-04-13 N974TA SMO → SMO Apr 13, 17:25 UTCApr 13, 19:20 UTC1h 55m
2026-04-13 N974TA - Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 N974TA SMO → SMO Apr 13, 14:40 UTCApr 13, 16:00 UTC1h 20m
2026-04-13 N974TA - Apr 13, 00:20 UTCApr 13, 00:40 UTC20m
2026-04-12 N974TA - Apr 12, 23:55 UTCApr 13, 00:40 UTC45m
2026-04-12 N974TA - Apr 12, 18:40 UTCApr 12, 20:15 UTC1h 35m

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 N974TA page for operator, model, and routing details .

Mode-S AD942B frequently asked

What is Mode-S code AD942B?
AD942B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N974TA.
Where is Mode-S AD942B registered?
Mode-S code AD942B 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 AD942B broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD942B, octal 53312053, decimal 11,375,659.
What flights does AD942B operate?
Mode-S AD942B has broadcast 1 distinct callsign, including N974TA.