sensors Mode-S transponder

8953FD

ICAO 24-bit transponder address · allocated to Brunei

Currently assigned to TUDB503 · CASA C-295 Persuader

Hex
8953FD
Octal
42251775
Decimal
8,999,933
Country
BN
Tail
TUDB503
Type
C295
No current signal · last broadcast 1d ago
Flights observed
1
Distinct callsigns
1
Country
BN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 8953FD.

Country allocation

The ICAO 24-bit address 8953FD falls within the block assigned to Brunei (BN) by ICAO Annex 10, Volume III. Every aircraft registered in Brunei 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
DOLP03 - 1 2026-04-14

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-14 DOLP03 - Apr 14, 05:15 UTCApr 14, 05:25 UTC10m

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 TUDB503 page for operator, model, and routing details .

Mode-S 8953FD frequently asked

What is Mode-S code 8953FD?
8953FD is an ICAO 24-bit transponder address. Allocated to Brunei. Assigned to TUDB503.
Where is Mode-S 8953FD registered?
Mode-S code 8953FD is allocated to Brunei (BN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8953FD broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8953FD, octal 42251775, decimal 8,999,933.
What flights does 8953FD operate?
Mode-S 8953FD has broadcast 1 distinct callsign, including DOLP03.