sensors Mode-S transponder

8A01CD

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LGL · BOEING 737-900

Hex
8A01CD
Octal
42400715
Decimal
9,044,429
Country
ID
Tail
PK-LGL
Type
B739
Broadcasting now · callsign LNI641 · 16,400 ft
Flights observed
5
Distinct callsigns
5
Country
ID
Last broadcast
20h ago

Current position

8A01CD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8A01CD falls within the block assigned to Indonesia (ID) by ICAO Annex 10, Volume III. Every aircraft registered in Indonesia 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
LNI972 - 1 2026-04-13
LNI971 - 1 2026-04-13
LNI239 - 1 2026-04-13
LNI238 - 1 2026-04-13
LNI171 Lion Mentari Airlines 1 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 LNI171 TKG → CGK Apr 14, 05:35 UTCApr 14, 05:50 UTC15m
2026-04-13 LNI972 - Apr 13, 06:45 UTCApr 13, 07:20 UTC35m
2026-04-13 LNI971 - Apr 13, 04:20 UTCApr 13, 05:05 UTC45m
2026-04-13 LNI238 - Apr 13, 02:45 UTCApr 13, 02:55 UTC10m
2026-04-13 LNI239 - Apr 13, 01:10 UTCApr 13, 01:30 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 PK-LGL page for operator, model, and routing details .

Mode-S 8A01CD frequently asked

What is Mode-S code 8A01CD?
8A01CD is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LGL.
Where is Mode-S 8A01CD registered?
Mode-S code 8A01CD is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A01CD broadcasting right now?
Yes. Mode-S 8A01CD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A01CD, octal 42400715, decimal 9,044,429.
What flights does 8A01CD operate?
Mode-S 8A01CD has broadcast 5 distinct callsigns, including LNI972, LNI971, LNI239, LNI238, LNI171.