sensors Mode-S transponder

A29A19

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N267MH · AIRBUS HELICOPTERS EC-145 · operated by METRO AVIATION INC

Hex
A29A19
Octal
50515031
Decimal
10,656,281
Country
US
Tail
N267MH
Type
EC45
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A29A19.

Country allocation

The ICAO 24-bit address A29A19 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
N267MH - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N267MH - Apr 13, 22:35 UTCApr 13, 23:05 UTC30m
2026-04-13 N267MH - Apr 13, 21:15 UTCApr 13, 21:50 UTC35m
2026-04-13 N267MH - Apr 13, 03:10 UTCApr 13, 04:00 UTC50m
2026-04-13 N267MH - Apr 13, 02:15 UTCApr 13, 02:30 UTC15m
2026-04-12 N267MH - Apr 12, 20:00 UTCApr 12, 20:10 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 N267MH page for operator, model, and routing details .

Mode-S A29A19 frequently asked

What is Mode-S code A29A19?
A29A19 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N267MH.
Where is Mode-S A29A19 registered?
Mode-S code A29A19 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 A29A19 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 A29A19, octal 50515031, decimal 10,656,281.
What flights does A29A19 operate?
Mode-S A29A19 has broadcast 1 distinct callsign, including N267MH.