sensors Mode-S transponder

75842D

ICAO 24-bit transponder address · allocated to Philippines

Currently assigned to RP-C5901 · DE HAVILLAND DHC-8-400 Dash 8

Hex
75842D
Octal
35302055
Decimal
7,701,549
Country
PH
Tail
RP-C5901
Type
DH8D
Broadcasting now · callsign GAP2696 · 19,250 ft
Flights observed
5
Distinct callsigns
5
Country
PH
Last broadcast
13h ago

Current position

75842D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 75842D falls within the block assigned to Philippines (PH) by ICAO Annex 10, Volume III. Every aircraft registered in Philippines 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
GAP2876 Air Philippines 1 2026-04-13
GAP2689 - 1 2026-04-13
GAP2688 - 1 2026-04-13
GAP2679 - 1 2026-04-14
GAP2678 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 GAP2679 - Apr 14, 09:10 UTCApr 14, 09:55 UTC45m
2026-04-13 GAP2678 - Apr 13, 07:05 UTCApr 13, 07:35 UTC30m
2026-04-13 GAP2689 - Apr 13, 04:50 UTCApr 13, 05:55 UTC1h 5m
2026-04-13 GAP2688 - Apr 13, 03:00 UTCApr 13, 03:30 UTC30m
2026-04-13 GAP2876 IAO → CRK Apr 13, 01:20 UTCApr 13, 02:00 UTC40m

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 RP-C5901 page for operator, model, and routing details .

Mode-S 75842D frequently asked

What is Mode-S code 75842D?
75842D is an ICAO 24-bit transponder address. Allocated to Philippines. Assigned to RP-C5901.
Where is Mode-S 75842D registered?
Mode-S code 75842D is allocated to Philippines (PH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 75842D broadcasting right now?
Yes. Mode-S 75842D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 75842D, octal 35302055, decimal 7,701,549.
What flights does 75842D operate?
Mode-S 75842D has broadcast 5 distinct callsigns, including GAP2876, GAP2689, GAP2688, GAP2679, GAP2678.