Apparatus

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sensors Mode-S transponder

A31DFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N30LJ · operated by WORLDWIDE AIRCRAFT SERVICES INC

Hex
A31DFC
Octal
50616774
Decimal
10,690,044
Country
US
Tail
N30LJ
Type
LJ31
Broadcasting now · callsign LN30LJ · 15,925 ft
Flights observed
21
Distinct callsigns
1
Country
US
Last broadcast
45m ago

Current position

A31DFC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A31DFC 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
LN30LJ - 21 2026-04-18

Recent flights last 21

DateFlightRouteTakeoffLandingDuration
2026-04-18 LN30LJ - Apr 18, 18:15 UTCApr 18, 18:25 UTC10m
2026-04-18 LN30LJ - Apr 18, 16:30 UTCApr 18, 16:55 UTC25m
2026-04-18 LN30LJ - Apr 18, 12:50 UTCApr 18, 13:30 UTC40m
2026-04-17 LN30LJ - Apr 17, 21:50 UTCApr 17, 22:30 UTC40m
2026-04-17 LN30LJ - Apr 17, 20:35 UTCApr 17, 21:00 UTC25m
2026-04-17 LN30LJ - Apr 17, 19:25 UTCApr 17, 19:35 UTC10m
2026-04-17 LN30LJ - Apr 17, 16:55 UTCApr 17, 17:15 UTC20m
2026-04-17 LN30LJ - Apr 17, 15:20 UTCApr 17, 15:40 UTC20m
2026-04-17 LN30LJ - Apr 17, 14:55 UTCApr 17, 15:15 UTC20m
2026-04-15 LN30LJ - Apr 15, 23:50 UTCApr 16, 00:25 UTC35m
2026-04-15 LN30LJ - Apr 15, 22:20 UTCApr 15, 22:45 UTC25m
2026-04-15 LN30LJ - Apr 15, 18:35 UTCApr 15, 19:00 UTC25m
2026-04-15 LN30LJ - Apr 15, 16:45 UTCApr 15, 17:00 UTC15m
2026-04-15 LN30LJ - Apr 15, 15:05 UTCApr 15, 15:15 UTC10m
2026-04-15 LN30LJ - Apr 15, 14:40 UTCApr 15, 14:55 UTC14m
2026-04-15 LN30LJ - Apr 15, 07:01 UTCApr 15, 07:10 UTC10m
2026-04-15 LN30LJ - Apr 15, 04:25 UTCApr 15, 04:50 UTC25m
2026-04-14 LN30LJ - Apr 14, 23:10 UTCApr 14, 23:55 UTC45m
2026-04-14 LN30LJ - Apr 14, 20:20 UTCApr 14, 20:50 UTC30m
2026-04-14 LN30LJ - Apr 14, 17:20 UTCApr 14, 17:40 UTC20m
2026-04-14 LN30LJ - Apr 14, 13:55 UTCApr 14, 14:40 UTC45m

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 N30LJ page for operator, model, and routing details .

Mode-S A31DFC frequently asked

What is Mode-S code A31DFC?
A31DFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N30LJ.
Where is Mode-S A31DFC registered?
Mode-S code A31DFC 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 A31DFC broadcasting right now?
Yes. Mode-S A31DFC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A31DFC, octal 50616774, decimal 10,690,044.
What flights does A31DFC operate?
Mode-S A31DFC has broadcast 1 distinct callsign, including LN30LJ.