Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A29F78

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2683B · operated by STEPHENS BRANDON J

Hex
A29F78
Octal
50517570
Decimal
10,657,656
Country
US
Tail
N2683B
No current signal · last broadcast 2d ago
Flights observed
20
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A29F78.

Country allocation

The ICAO 24-bit address A29F78 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
VFR - 20 2026-07-16

Recent flights last 20

DateFlightRouteTakeoffLandingDuration
2026-07-16 VFR - Jul 16, 02:00 UTCJul 16, 02:05 UTC5m
2026-07-15 VFR - Jul 15, 21:35 UTCJul 15, 22:15 UTC40m
2026-06-30 VFR - Jun 30, 22:45 UTCJun 30, 23:10 UTC25m
2026-06-30 VFR - Jun 30, 18:15 UTCJun 30, 18:45 UTC30m
2026-06-21 VFR - Jun 21, 03:14 UTCJun 21, 03:59 UTC45m
2026-06-20 VFR - Jun 20, 23:10 UTCJun 20, 23:29 UTC20m
2026-06-14 VFR - Jun 14, 20:20 UTCJun 14, 21:15 UTC55m
2026-06-11 VFR - Jun 11, 19:35 UTCJun 11, 20:25 UTC50m
2026-06-10 VFR - Jun 10, 19:30 UTCJun 10, 19:45 UTC15m
2026-06-07 VFR - Jun 7, 00:34 UTCJun 7, 00:49 UTC15m
2026-06-06 VFR - Jun 6, 22:34 UTCJun 6, 23:00 UTC25m
2026-06-06 VFR - Jun 6, 21:00 UTCJun 6, 21:35 UTC35m
2026-06-06 VFR - Jun 6, 04:00 UTCJun 6, 05:05 UTC1h 5m
2026-06-06 VFR - Jun 6, 02:35 UTCJun 6, 02:50 UTC15m
2026-06-05 VFR - Jun 5, 23:35 UTCJun 6, 00:15 UTC40m
2026-05-23 VFR - May 23, 00:25 UTCMay 23, 00:40 UTC15m
2026-05-22 VFR - May 22, 23:00 UTCMay 22, 23:15 UTC15m
2026-05-22 VFR - May 22, 21:35 UTCMay 22, 22:15 UTC40m
2026-05-22 VFR - May 22, 19:40 UTCMay 22, 20:20 UTC40m
2026-05-15 VFR - May 15, 00:25 UTCMay 15, 00:45 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 N2683B page for operator, model, and routing details .

Mode-S A29F78 frequently asked

What is Mode-S code A29F78?
A29F78 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2683B.
Where is Mode-S A29F78 registered?
Mode-S code A29F78 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 A29F78 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29F78, octal 50517570, decimal 10,657,656.
What flights does A29F78 operate?
Mode-S A29F78 has broadcast 1 distinct callsign, including VFR.