sensors Mode-S transponder

A4E84A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N415SG · LEARJET 60 · operated by TOM & JERRY INC

Hex
A4E84A
Octal
51164112
Decimal
10,807,370
Country
US
Tail
N415SG
Type
LJ60
No current signal · last broadcast 6d ago
Flights observed
103
Distinct callsigns
5
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A4E84A.

Country allocation

The ICAO 24-bit address A4E84A 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 5 distinct

Callsign Airline Flights Last seen
CYO415 - 8 2026-06-06
R BHPR U - 1 2026-06-05
FQB S - 1 2026-06-02
44 - 1 2026-06-14
22K JO8 - 1 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-15 - - Jun 15, 14:20 UTCJun 15, 16:59 UTC2h 40m
2026-06-14 - - Jun 14, 19:25 UTCJun 14, 21:25 UTC2h 0m
2026-06-14 44 - Jun 14, 15:15 UTCJun 14, 17:30 UTC2h 15m
2026-06-13 - - Jun 13, 18:15 UTCJun 13, 19:20 UTC1h 5m
2026-06-13 - - Jun 13, 15:20 UTCJun 13, 16:55 UTC1h 35m
2026-06-13 - AUS → BTR Jun 13, 13:15 UTCJun 13, 14:20 UTC1h 5m
2026-06-12 - TPA → AUS Jun 12, 19:50 UTCJun 12, 22:10 UTC2h 20m
2026-06-12 - - Jun 12, 17:05 UTCJun 12, 18:01 UTC55m
2026-06-12 - - Jun 12, 14:15 UTCJun 12, 15:15 UTC1h 0m
2026-06-11 - - Jun 11, 23:10 UTCJun 12, 01:55 UTC2h 46m
2026-06-11 - - Jun 11, 18:15 UTCJun 11, 21:55 UTC3h 40m
2026-06-10 - - Jun 10, 16:55 UTCJun 10, 21:05 UTC4h 10m
2026-06-10 - - Jun 10, 13:55 UTCJun 10, 15:20 UTC1h 25m
2026-06-10 - - Jun 10, 09:15 UTCJun 10, 12:40 UTC3h 25m
2026-06-09 - COS → LNK Jun 9, 20:55 UTCJun 9, 22:30 UTC1h 35m
2026-06-08 - - Jun 8, 20:15 UTCJun 9, 00:05 UTC3h 50m
2026-06-08 - - Jun 8, 18:15 UTCJun 8, 18:40 UTC25m
2026-06-08 22K JO8 - Jun 8, 14:55 UTCJun 8, 17:20 UTC2h 25m
2026-06-08 - - Jun 8, 00:35 UTCJun 8, 02:20 UTC1h 45m
2026-06-07 - HWO → APA Jun 7, 19:35 UTCJun 7, 23:30 UTC3h 55m
2026-06-06 CYO415 - Jun 6, 17:34 UTCJun 6, 18:45 UTC1h 10m
2026-06-06 - - Jun 6, 15:10 UTCJun 6, 16:20 UTC1h 10m
2026-06-05 R BHPR U - Jun 5, 19:40 UTCJun 5, 22:40 UTC3h 0m
2026-06-05 - - Jun 5, 16:05 UTCJun 5, 17:35 UTC1h 30m
2026-06-04 CYO415 - Jun 4, 21:05 UTCJun 4, 22:40 UTC1h 35m
2026-06-04 - - Jun 4, 15:45 UTCJun 4, 19:45 UTC4h 0m
2026-06-03 CYO415 - Jun 3, 18:10 UTCJun 3, 20:55 UTC2h 45m
2026-06-03 - - Jun 3, 14:15 UTCJun 3, 17:00 UTC2h 45m
2026-06-02 - - Jun 2, 17:40 UTCJun 2, 18:00 UTC20m
2026-06-02 FQB S - Jun 2, 14:20 UTCJun 2, 16:40 UTC2h 20m
2026-06-01 CYO415 - Jun 1, 18:05 UTCJun 1, 20:45 UTC2h 40m
2026-06-01 - - Jun 1, 14:05 UTCJun 1, 17:05 UTC3h 0m
2026-05-31 CYO415 - May 31, 13:10 UTCMay 31, 15:30 UTC2h 20m
2026-05-31 - - May 31, 11:55 UTCMay 31, 12:10 UTC15m
2026-05-30 CYO415 ROA → HPN May 30, 22:20 UTCMay 30, 23:30 UTC1h 10m
2026-05-30 CYO415 - May 30, 16:10 UTCMay 30, 17:05 UTC55m
2026-05-30 - - May 30, 13:05 UTCMay 30, 15:25 UTC2h 20m
2026-05-29 CYO415 - May 29, 23:00 UTCMay 30, 01:25 UTC2h 25m
2026-05-29 - - May 29, 19:30 UTCMay 29, 22:10 UTC2h 40m
2026-05-28 - - May 28, 21:05 UTCMay 29, 00:15 UTC3h 10m
2026-05-26 - - May 26, 11:30 UTCMay 26, 13:54 UTC2h 25m
2026-05-25 - - May 25, 16:20 UTCMay 25, 17:10 UTC50m
2026-05-25 - - May 25, 13:45 UTCMay 25, 15:25 UTC1h 40m
2026-05-24 - - May 24, 21:10 UTCMay 24, 21:50 UTC40m
2026-05-24 - - May 24, 17:50 UTCMay 24, 20:35 UTC2h 45m
2026-05-24 - - May 24, 16:30 UTCMay 24, 16:55 UTC25m
2026-05-23 - - May 23, 18:50 UTCMay 23, 19:20 UTC30m
2026-05-23 - - May 23, 16:00 UTCMay 23, 18:05 UTC2h 5m
2026-05-23 - - May 23, 14:40 UTCMay 23, 15:20 UTC40m
2026-05-22 - - May 22, 23:10 UTCMay 23, 00:05 UTC55m

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 N415SG page for operator, model, and routing details .

Mode-S A4E84A frequently asked

What is Mode-S code A4E84A?
A4E84A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N415SG.
Where is Mode-S A4E84A registered?
Mode-S code A4E84A 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 A4E84A broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4E84A, octal 51164112, decimal 10,807,370.
What flights does A4E84A operate?
Mode-S A4E84A has broadcast 5 distinct callsigns, including CYO415, R BHPR U, FQB S, 44, 22K JO8.