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sensors Mode-S transponder

A34F8C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N312PH · AIRBUS HELICOPTERS EC-135/635 · operated by PHI HEALTH LLC

Hex
A34F8C
Octal
50647614
Decimal
10,702,732
Country
US
Tail
N312PH
Type
EC35
Broadcasting now · callsign N312PH · 1,575 ft
Flights observed
198
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 01:45 UTC

Current position

A34F8C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A34F8C 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 2 distinct

Callsign Airline Flights Last seen
N312PH - 189 2026-07-26
0127 - 1 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N312PH - Jul 26, 01:35 UTCJul 26, 01:45 UTC10m
2026-07-25 N312PH - Jul 25, 23:10 UTCJul 25, 23:20 UTC10m
2026-07-25 N312PH - Jul 25, 21:50 UTCJul 25, 22:35 UTC45m
2026-07-24 N312PH - Jul 24, 20:50 UTCJul 24, 21:00 UTC10m
2026-07-24 N312PH - Jul 24, 16:45 UTCJul 24, 17:00 UTC15m
2026-07-23 N312PH - Jul 23, 21:10 UTCJul 23, 22:55 UTC1h 45m
2026-07-23 N312PH - Jul 23, 19:35 UTCJul 23, 20:10 UTC35m
2026-07-23 N312PH - Jul 23, 15:50 UTCJul 23, 16:00 UTC10m
2026-07-23 N312PH - Jul 23, 15:00 UTCJul 23, 15:10 UTC10m
2026-07-23 N312PH - Jul 23, 09:00 UTCJul 23, 09:20 UTC20m
2026-07-23 N312PH - Jul 23, 08:00 UTCJul 23, 08:25 UTC25m
2026-07-23 N312PH - Jul 23, 05:50 UTCJul 23, 06:45 UTC55m
2026-07-23 N312PH - Jul 23, 02:05 UTCJul 23, 02:35 UTC30m
2026-07-22 N312PH - Jul 22, 19:15 UTCJul 22, 19:30 UTC15m
2026-07-22 N312PH - Jul 22, 17:45 UTCJul 22, 18:25 UTC40m
2026-07-22 N312PH - Jul 22, 15:40 UTCJul 22, 16:30 UTC50m
2026-07-19 N312PH - Jul 19, 20:05 UTCJul 19, 20:20 UTC15m
2026-07-19 N312PH - Jul 19, 18:20 UTCJul 19, 18:40 UTC20m
2026-07-19 N312PH - Jul 19, 16:55 UTCJul 19, 17:25 UTC30m
2026-07-19 N312PH - Jul 19, 13:05 UTCJul 19, 13:15 UTC10m
2026-07-19 N312PH - Jul 19, 11:40 UTCJul 19, 11:50 UTC10m
2026-07-15 N312PH - Jul 15, 22:25 UTCJul 15, 23:25 UTC1h 0m
2026-07-15 N312PH - Jul 15, 17:10 UTCJul 15, 17:30 UTC20m
2026-07-15 N312PH - Jul 15, 16:05 UTCJul 15, 16:35 UTC30m
2026-07-15 N312PH - Jul 15, 15:15 UTCJul 15, 15:30 UTC15m
2026-07-14 N312PH - Jul 14, 20:15 UTCJul 14, 21:00 UTC45m
2026-07-12 N312PH - Jul 12, 04:05 UTCJul 12, 04:20 UTC15m
2026-07-12 N312PH - Jul 12, 01:55 UTCJul 12, 02:25 UTC30m
2026-07-11 N312PH - Jul 11, 09:20 UTCJul 11, 09:30 UTC10m
2026-07-11 N312PH - Jul 11, 08:05 UTCJul 11, 08:40 UTC35m
2026-07-11 N312PH - Jul 11, 04:15 UTCJul 11, 04:50 UTC35m
2026-07-07 N312PH - Jul 7, 20:05 UTCJul 7, 20:25 UTC20m
2026-07-07 N312PH - Jul 7, 19:15 UTCJul 7, 19:30 UTC15m
2026-07-07 N312PH - Jul 7, 17:55 UTCJul 7, 18:05 UTC10m
2026-07-07 N312PH - Jul 7, 16:45 UTCJul 7, 16:55 UTC10m
2026-07-07 N312PH - Jul 7, 15:35 UTCJul 7, 15:50 UTC15m
2026-07-05 N312PH - Jul 5, 20:20 UTCJul 5, 20:45 UTC25m
2026-07-05 N312PH - Jul 5, 18:35 UTCJul 5, 19:00 UTC25m
2026-07-04 N312PH - Jul 4, 14:15 UTCJul 4, 14:25 UTC10m
2026-07-03 N312PH - Jul 3, 17:15 UTCJul 3, 17:30 UTC15m
2026-07-03 N312PH - Jul 3, 16:25 UTCJul 3, 16:40 UTC15m
2026-07-03 N312PH - Jul 3, 15:40 UTCJul 3, 15:55 UTC15m
2026-07-03 N312PH - Jul 3, 04:05 UTCJul 3, 05:15 UTC1h 10m
2026-07-03 N312PH - Jul 3, 02:40 UTCJul 3, 03:15 UTC35m
2026-07-02 N312PH - Jul 2, 06:15 UTCJul 2, 06:25 UTC10m
2026-07-02 N312PH - Jul 2, 05:00 UTCJul 2, 05:20 UTC20m
2026-07-02 N312PH - Jul 2, 03:15 UTCJul 2, 03:50 UTC35m
2026-07-01 N312PH - Jul 1, 16:30 UTCJul 1, 16:35 UTC5m
2026-07-01 - - Jul 1, 15:15 UTCJul 1, 15:30 UTC15m
2026-07-01 N312PH - Jul 1, 13:40 UTCJul 1, 13:55 UTC15m

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 N312PH page for operator, model, and routing details .

Mode-S A34F8C frequently asked

What is Mode-S code A34F8C?
A34F8C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N312PH.
Where is Mode-S A34F8C registered?
Mode-S code A34F8C 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 A34F8C broadcasting right now?
Yes. Mode-S A34F8C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A34F8C, octal 50647614, decimal 10,702,732.
What flights does A34F8C operate?
Mode-S A34F8C has broadcast 2 distinct callsigns, including N312PH, 0127.