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sensors Mode-S transponder

A8FAE9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N678RB · CESSNA 172 Skyhawk · operated by BOLDFLIGHT LLC

Hex
A8FAE9
Octal
52175351
Decimal
11,074,281
Country
US
Tail
N678RB
Type
C172
No current signal · last broadcast 10d ago
Flights observed
122
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S A8FAE9.

Country allocation

The ICAO 24-bit address A8FAE9 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
N678RB - 122 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N678RB - Jul 26, 20:15 UTCJul 26, 21:40 UTC1h 25m
2026-07-24 N678RB - Jul 24, 20:10 UTCJul 24, 20:30 UTC20m
2026-07-24 N678RB - Jul 24, 16:40 UTCJul 24, 18:55 UTC2h 15m
2026-07-24 N678RB - Jul 24, 13:35 UTCJul 24, 14:35 UTC1h 0m
2026-07-23 N678RB - Jul 23, 22:20 UTCJul 23, 22:55 UTC35m
2026-07-23 N678RB - Jul 23, 18:45 UTCJul 23, 19:50 UTC1h 5m
2026-07-23 N678RB - Jul 23, 16:05 UTCJul 23, 17:35 UTC1h 30m
2026-07-22 N678RB - Jul 22, 19:35 UTCJul 22, 20:25 UTC50m
2026-07-22 N678RB - Jul 22, 17:05 UTCJul 22, 18:00 UTC55m
2026-07-22 N678RB - Jul 22, 15:45 UTCJul 22, 16:15 UTC30m
2026-07-22 N678RB - Jul 22, 13:45 UTCJul 22, 14:00 UTC15m
2026-07-20 N678RB - Jul 20, 19:15 UTCJul 20, 20:15 UTC1h 0m
2026-07-19 N678RB - Jul 19, 20:50 UTCJul 19, 21:40 UTC50m
2026-07-19 N678RB - Jul 19, 19:10 UTCJul 19, 20:00 UTC50m
2026-07-14 N678RB - Jul 14, 15:15 UTCJul 14, 15:30 UTC15m
2026-07-13 N678RB - Jul 13, 15:00 UTCJul 13, 15:10 UTC10m
2026-07-10 N678RB - Jul 10, 17:50 UTCJul 10, 18:05 UTC15m
2026-07-09 N678RB - Jul 9, 16:05 UTCJul 9, 16:20 UTC15m
2026-07-08 N678RB - Jul 8, 20:20 UTCJul 8, 20:40 UTC20m
2026-07-08 N678RB - Jul 8, 17:20 UTCJul 8, 18:35 UTC1h 15m
2026-07-08 N678RB - Jul 8, 15:30 UTCJul 8, 16:30 UTC1h 0m
2026-07-08 N678RB - Jul 8, 01:50 UTCJul 8, 02:05 UTC15m
2026-07-08 N678RB - Jul 8, 00:50 UTCJul 8, 01:20 UTC30m
2026-07-06 N678RB - Jul 6, 16:45 UTCJul 6, 18:15 UTC1h 30m
2026-07-04 N678RB - Jul 4, 16:15 UTCJul 4, 16:45 UTC30m
2026-07-03 N678RB - Jul 3, 16:05 UTCJul 3, 17:15 UTC1h 10m
2026-07-03 N678RB - Jul 3, 13:30 UTCJul 3, 14:35 UTC1h 5m
2026-07-02 N678RB - Jul 2, 18:00 UTCJul 2, 18:10 UTC10m
2026-07-01 N678RB - Jul 1, 13:50 UTCJul 1, 14:50 UTC1h 0m
2026-06-30 N678RB - Jun 30, 16:15 UTCJun 30, 17:10 UTC55m
2026-06-29 N678RB - Jun 29, 20:00 UTCJun 29, 20:44 UTC45m
2026-06-29 N678RB - Jun 29, 16:04 UTCJun 29, 17:05 UTC1h 0m
2026-06-29 N678RB - Jun 29, 13:34 UTCJun 29, 13:54 UTC20m
2026-06-25 N678RB - Jun 25, 15:44 UTCJun 25, 16:55 UTC1h 10m
2026-06-24 N678RB - Jun 24, 22:55 UTCJun 24, 23:20 UTC25m
2026-06-24 N678RB - Jun 24, 21:34 UTCJun 24, 22:00 UTC25m
2026-06-24 N678RB - Jun 24, 13:40 UTCJun 24, 14:29 UTC50m
2026-06-23 N678RB - Jun 23, 19:44 UTCJun 23, 20:49 UTC1h 5m
2026-06-23 N678RB - Jun 23, 18:14 UTCJun 23, 18:50 UTC35m
2026-06-23 N678RB - Jun 23, 13:34 UTCJun 23, 14:35 UTC1h 0m
2026-06-22 N678RB - Jun 22, 23:45 UTCJun 23, 00:15 UTC30m
2026-06-22 N678RB - Jun 22, 22:24 UTCJun 22, 22:44 UTC20m
2026-06-21 N678RB - Jun 21, 11:34 UTCJun 21, 12:55 UTC1h 20m
2026-06-19 N678RB - Jun 19, 22:24 UTCJun 19, 23:39 UTC1h 15m
2026-06-19 N678RB - Jun 19, 13:29 UTCJun 19, 14:29 UTC1h 0m
2026-06-16 N678RB - Jun 16, 12:50 UTCJun 16, 13:55 UTC1h 5m
2026-06-15 N678RB - Jun 15, 21:45 UTCJun 15, 22:45 UTC1h 0m
2026-06-15 N678RB - Jun 15, 17:15 UTCJun 15, 18:10 UTC55m
2026-06-15 N678RB - Jun 15, 15:25 UTCJun 15, 15:59 UTC35m
2026-06-13 N678RB - Jun 13, 18:00 UTCJun 13, 19:00 UTC1h 0m

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 N678RB page for operator, model, and routing details .

Mode-S A8FAE9 frequently asked

What is Mode-S code A8FAE9?
A8FAE9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N678RB.
Where is Mode-S A8FAE9 registered?
Mode-S code A8FAE9 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 A8FAE9 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8FAE9, octal 52175351, decimal 11,074,281.
What flights does A8FAE9 operate?
Mode-S A8FAE9 has broadcast 1 distinct callsign, including N678RB.