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sensors Mode-S transponder

A4CBA7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N408PJ · BELL 407 · operated by HELIBRO LLC

Hex
A4CBA7
Octal
51145647
Decimal
10,800,039
Country
US
Tail
N408PJ
Type
B407
Broadcasting now · callsign N408PJ · 1,200 ft
Flights observed
38
Distinct callsigns
1
Country
US
Last broadcast
Jul 21, 22:20 UTC

Current position

A4CBA7 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4CBA7 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
N408PJ - 38 2026-07-21

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-07-21 N408PJ - Jul 21, 21:10 UTCJul 21, 22:20 UTC1h 10m
2026-07-21 N408PJ - Jul 21, 14:30 UTCJul 21, 15:15 UTC45m
2026-07-16 N408PJ - Jul 16, 21:05 UTCJul 16, 22:10 UTC1h 5m
2026-07-16 N408PJ - Jul 16, 19:50 UTCJul 16, 20:19 UTC30m
2026-07-16 N408PJ - Jul 16, 17:00 UTCJul 16, 18:34 UTC1h 35m
2026-07-16 N408PJ - Jul 16, 15:19 UTCJul 16, 15:30 UTC10m
2026-07-16 N408PJ - Jul 16, 13:34 UTCJul 16, 13:49 UTC15m
2026-07-15 N408PJ - Jul 15, 15:45 UTCJul 15, 15:55 UTC10m
2026-07-15 N408PJ - Jul 15, 13:35 UTCJul 15, 13:50 UTC15m
2026-07-12 N408PJ - Jul 12, 17:01 UTCJul 12, 17:45 UTC45m
2026-07-12 N408PJ - Jul 12, 15:50 UTCJul 12, 16:05 UTC15m
2026-07-12 N408PJ - Jul 12, 00:01 UTCJul 12, 00:25 UTC25m
2026-07-11 N408PJ - Jul 11, 21:35 UTCJul 11, 23:20 UTC1h 45m
2026-07-11 N408PJ - Jul 11, 20:35 UTCJul 11, 20:50 UTC15m
2026-07-11 N408PJ - Jul 11, 16:35 UTCJul 11, 16:50 UTC15m
2026-07-10 N408PJ - Jul 10, 23:00 UTCJul 10, 23:45 UTC45m
2026-07-10 N408PJ - Jul 10, 19:55 UTCJul 10, 22:25 UTC2h 30m
2026-07-10 N408PJ - Jul 10, 17:40 UTCJul 10, 18:55 UTC1h 15m
2026-07-10 N408PJ - Jul 10, 16:35 UTCJul 10, 16:50 UTC15m
2026-07-09 N408PJ - Jul 9, 21:10 UTCJul 9, 22:15 UTC1h 5m
2026-07-09 N408PJ TLR → BUR Jul 9, 18:35 UTCJul 9, 19:45 UTC1h 10m
2026-07-09 N408PJ - Jul 9, 15:25 UTCJul 9, 16:40 UTC1h 15m
2026-06-30 N408PJ - Jun 30, 15:20 UTCJun 30, 15:40 UTC20m
2026-06-20 N408PJ - Jun 20, 00:39 UTCJun 20, 01:39 UTC1h 0m
2026-06-11 N408PJ - Jun 11, 23:45 UTCJun 12, 00:15 UTC30m
2026-06-03 N408PJ - Jun 3, 18:45 UTCJun 3, 19:00 UTC15m
2026-06-03 N408PJ - Jun 3, 15:25 UTCJun 3, 15:45 UTC20m
2026-05-18 N408PJ - May 18, 23:20 UTCMay 19, 00:35 UTC1h 15m
2026-05-18 N408PJ - May 18, 17:20 UTCMay 18, 18:55 UTC1h 34m
2026-05-13 N408PJ - May 13, 20:20 UTCMay 13, 20:30 UTC10m
2026-05-13 N408PJ - May 13, 13:55 UTCMay 13, 14:35 UTC40m
2026-05-12 N408PJ - May 12, 17:15 UTCMay 12, 17:45 UTC30m
2026-04-23 N408PJ - Apr 23, 16:50 UTCApr 23, 19:05 UTC2h 14m
2026-04-16 N408PJ - Apr 16, 23:20 UTCApr 17, 00:55 UTC1h 35m
2026-04-16 N408PJ - Apr 16, 22:40 UTCApr 16, 23:10 UTC30m
2026-04-16 N408PJ - Apr 16, 19:55 UTCApr 16, 20:05 UTC10m
2026-04-13 N408PJ - Apr 13, 15:55 UTCApr 13, 16:10 UTC15m
2026-04-12 N408PJ - Apr 12, 17:15 UTCApr 12, 18:25 UTC1h 10m

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 N408PJ page for operator, model, and routing details .

Mode-S A4CBA7 frequently asked

What is Mode-S code A4CBA7?
A4CBA7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N408PJ.
Where is Mode-S A4CBA7 registered?
Mode-S code A4CBA7 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 A4CBA7 broadcasting right now?
Yes. Mode-S A4CBA7 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4CBA7, octal 51145647, decimal 10,800,039.
What flights does A4CBA7 operate?
Mode-S A4CBA7 has broadcast 1 distinct callsign, including N408PJ.