Apparatus

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sensors Mode-S transponder

A7D6A4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N604FM · BOMBARDIER CL-600 Challenger · operated by BLUE FIVE LLC, JMD AIRCRAFT HOLDINGS LLC

Hex
A7D6A4
Octal
51753244
Decimal
10,999,460
Country
US
Tail
N604FM
Type
CL60
No current signal · last broadcast 2d ago
Flights observed
30
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A7D6A4.

Country allocation

The ICAO 24-bit address A7D6A4 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
JTL604 Jetall Holdings 30 2026-05-31

Recent flights last 30

DateFlightRouteTakeoffLandingDuration
2026-05-31 JTL604 APC → SNA May 31, 19:35 UTCMay 31, 20:45 UTC1h 10m
2026-05-28 JTL604 APC → SNA May 28, 22:05 UTCMay 28, 23:55 UTC1h 50m
2026-05-26 JTL604 APC → SNA May 26, 19:34 UTCMay 26, 21:49 UTC2h 15m
2026-05-26 JTL604 APC → SNA May 26, 16:15 UTCMay 26, 18:40 UTC2h 25m
2026-05-25 JTL604 APC → SNA May 25, 14:45 UTCMay 25, 19:54 UTC5h 10m
2026-05-24 JTL604 APC → SNA May 24, 20:50 UTCMay 24, 21:40 UTC50m
2026-05-23 JTL604 APC → SNA May 23, 21:05 UTCMay 24, 21:00 UTC23h 55m
2026-05-23 JTL604 APC → SNA May 23, 20:05 UTCMay 23, 21:45 UTC1h 40m
2026-05-23 JTL604 APC → SNA May 23, 14:55 UTCMay 23, 17:40 UTC2h 45m
2026-05-19 JTL604 APC → SNA May 19, 22:20 UTCMay 20, 00:15 UTC1h 55m
2026-05-19 JTL604 APC → SNA May 19, 18:25 UTCMay 19, 21:50 UTC3h 25m
2026-05-19 JTL604 APC → SNA May 19, 18:00 UTCMay 19, 18:20 UTC20m
2026-05-18 JTL604 APC → SNA May 18, 12:05 UTCMay 18, 15:45 UTC3h 40m
2026-05-17 JTL604 APC → SNA May 17, 17:50 UTCMay 17, 18:05 UTC15m
2026-05-17 JTL604 APC → SNA May 17, 15:31 UTCMay 17, 17:20 UTC1h 50m
2026-05-17 JTL604 APC → SNA May 17, 12:35 UTCMay 17, 13:25 UTC50m
2026-05-15 JTL604 APC → SNA May 15, 21:10 UTCMay 15, 23:35 UTC2h 25m
2026-05-15 JTL604 APC → SNA May 15, 18:30 UTCMay 15, 18:50 UTC20m
2026-05-14 JTL604 APC → SNA May 14, 20:55 UTCMay 14, 23:45 UTC2h 50m
2026-05-13 JTL604 APC → SNA May 13, 19:15 UTCMay 13, 22:20 UTC3h 5m
2026-05-11 JTL604 APC → SNA May 11, 15:40 UTCMay 11, 18:10 UTC2h 30m
2026-05-09 JTL604 APC → SNA May 9, 19:25 UTCMay 9, 21:05 UTC1h 40m
2026-05-09 JTL604 APC → SNA May 9, 02:40 UTCMay 9, 04:30 UTC1h 50m
2026-05-08 JTL604 APC → SNA May 8, 19:35 UTCMay 8, 21:10 UTC1h 35m
2026-05-07 JTL604 APC → SNA May 7, 19:55 UTCMay 7, 21:00 UTC1h 5m
2026-05-03 JTL604 APC → SNA May 3, 20:45 UTCMay 3, 23:55 UTC3h 10m
2026-05-03 JTL604 APC → SNA May 3, 16:00 UTCMay 3, 18:30 UTC2h 30m
2026-04-21 JTL604 APC → SNA Apr 21, 21:15 UTCApr 21, 21:55 UTC40m
2026-04-21 JTL604 APC → SNA Apr 21, 18:15 UTCApr 21, 20:40 UTC2h 25m
2026-04-18 JTL604 APC → SNA Apr 18, 18:50 UTCApr 18, 20:50 UTC2h 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 N604FM page for operator, model, and routing details .

Mode-S A7D6A4 frequently asked

What is Mode-S code A7D6A4?
A7D6A4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N604FM.
Where is Mode-S A7D6A4 registered?
Mode-S code A7D6A4 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 A7D6A4 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 A7D6A4, octal 51753244, decimal 10,999,460.
What flights does A7D6A4 operate?
Mode-S A7D6A4 has broadcast 1 distinct callsign, including JTL604.