Apparatus

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sensors Mode-S transponder

AD08B6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N939SP · CESSNA 172 Skyhawk · operated by AERO AIRCRAFT 12 LLC

Hex
AD08B6
Octal
53204266
Decimal
11,339,958
Country
US
Tail
N939SP
Type
C172
Broadcasting now · callsign N939SP · 2,850 ft
Flights observed
181
Distinct callsigns
1
Country
US
Last broadcast
10m ago

Current position

AD08B6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD08B6 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
N939SP - 179 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-29 N939SP - Jun 29, 17:14 UTCJun 29, 17:30 UTC15m
2026-06-28 N939SP - Jun 28, 18:19 UTCJun 28, 19:20 UTC1h 0m
2026-06-27 N939SP - Jun 27, 23:55 UTCJun 28, 00:39 UTC45m
2026-06-27 N939SP - Jun 27, 13:24 UTCJun 27, 14:49 UTC1h 25m
2026-06-26 N939SP - Jun 26, 22:55 UTCJun 27, 00:00 UTC1h 5m
2026-06-26 N939SP - Jun 26, 15:45 UTCJun 26, 15:54 UTC10m
2026-06-25 N939SP - Jun 25, 22:29 UTCJun 25, 23:05 UTC35m
2026-06-25 N939SP - Jun 25, 01:09 UTCJun 25, 02:30 UTC1h 20m
2026-06-24 N939SP - Jun 24, 22:55 UTCJun 24, 23:54 UTC1h 0m
2026-06-24 N939SP - Jun 24, 19:04 UTCJun 24, 20:09 UTC1h 5m
2026-06-24 N939SP - Jun 24, 13:24 UTCJun 24, 15:00 UTC1h 35m
2026-06-24 N939SP - Jun 24, 11:05 UTCJun 24, 12:09 UTC1h 5m
2026-06-24 N939SP - Jun 24, 00:34 UTCJun 24, 00:44 UTC10m
2026-06-23 N939SP - Jun 23, 18:04 UTCJun 23, 19:10 UTC1h 5m
2026-06-22 N939SP - Jun 22, 22:54 UTCJun 22, 23:35 UTC40m
2026-06-22 N939SP - Jun 22, 14:45 UTCJun 22, 16:24 UTC1h 40m
2026-06-22 N939SP - Jun 22, 12:05 UTCJun 22, 13:39 UTC1h 35m
2026-06-21 N939SP - Jun 21, 17:45 UTCJun 21, 18:44 UTC1h 0m
2026-06-21 N939SP - Jun 21, 11:34 UTCJun 21, 12:49 UTC1h 15m
2026-06-21 N939SP - Jun 21, 02:20 UTCJun 21, 02:45 UTC25m
2026-06-21 N939SP - Jun 21, 01:05 UTCJun 21, 01:30 UTC25m
2026-06-20 N939SP - Jun 20, 19:29 UTCJun 20, 20:00 UTC30m
2026-06-20 N939SP - Jun 20, 17:39 UTCJun 20, 18:40 UTC1h 0m
2026-06-20 N939SP - Jun 20, 12:50 UTCJun 20, 13:55 UTC1h 5m
2026-06-19 N939SP - Jun 19, 12:19 UTCJun 19, 12:39 UTC20m
2026-06-18 N939SP - Jun 18, 15:20 UTCJun 18, 16:00 UTC40m
2026-06-18 N939SP - Jun 18, 12:40 UTCJun 18, 13:45 UTC1h 5m
2026-06-17 N939SP - Jun 17, 23:10 UTCJun 18, 00:35 UTC1h 25m
2026-06-17 N939SP - Jun 17, 18:05 UTCJun 17, 19:20 UTC1h 15m
2026-06-17 N939SP - Jun 17, 13:00 UTCJun 17, 13:45 UTC45m
2026-06-16 N939SP - Jun 16, 12:50 UTCJun 16, 14:00 UTC1h 10m
2026-06-15 N939SP - Jun 15, 18:25 UTCJun 15, 19:05 UTC40m
2026-06-15 N939SP - Jun 15, 12:39 UTCJun 15, 13:34 UTC55m
2026-06-14 N939SP - Jun 14, 12:05 UTCJun 14, 14:30 UTC2h 25m
2026-06-13 N939SP - Jun 13, 13:30 UTCJun 13, 15:30 UTC2h 0m
2026-06-13 N939SP - Jun 13, 02:30 UTCJun 13, 03:45 UTC1h 15m
2026-06-12 N939SP - Jun 12, 22:35 UTCJun 13, 00:30 UTC1h 55m
2026-06-12 N939SP - Jun 12, 14:40 UTCJun 12, 15:50 UTC1h 10m
2026-06-12 N939SP - Jun 12, 12:15 UTCJun 12, 12:40 UTC25m
2026-06-11 N939SP - Jun 11, 22:15 UTCJun 11, 23:20 UTC1h 5m
2026-06-11 N939SP - Jun 11, 18:30 UTCJun 11, 18:45 UTC15m
2026-06-11 N939SP - Jun 11, 17:35 UTCJun 11, 17:55 UTC20m
2026-06-11 N939SP - Jun 11, 11:35 UTCJun 11, 14:10 UTC2h 35m
2026-06-11 N939SP - Jun 11, 01:55 UTCJun 11, 03:35 UTC1h 40m
2026-06-06 N939SP - Jun 6, 13:39 UTCJun 6, 15:15 UTC1h 35m
2026-06-06 N939SP - Jun 6, 12:35 UTCJun 6, 13:05 UTC30m
2026-06-05 N939SP - Jun 5, 21:00 UTCJun 5, 21:30 UTC30m
2026-06-05 N939SP - Jun 5, 17:45 UTCJun 5, 18:00 UTC15m
2026-06-05 N939SP - Jun 5, 15:15 UTCJun 5, 16:30 UTC1h 15m
2026-06-05 N939SP - Jun 5, 03:20 UTCJun 5, 03:40 UTC20m

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 N939SP page for operator, model, and routing details .

Mode-S AD08B6 frequently asked

What is Mode-S code AD08B6?
AD08B6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N939SP.
Where is Mode-S AD08B6 registered?
Mode-S code AD08B6 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 AD08B6 broadcasting right now?
Yes. Mode-S AD08B6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD08B6, octal 53204266, decimal 11,339,958.
What flights does AD08B6 operate?
Mode-S AD08B6 has broadcast 1 distinct callsign, including N939SP.