Apparatus

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sensors Mode-S transponder

A04ECA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N119MW · AGUSTA AW-139 · operated by ERA HELICOPTERS LLC

Hex
A04ECA
Octal
50047312
Decimal
10,505,930
Country
US
Tail
N119MW
Type
A139
No current signal · last broadcast 1d ago
Flights observed
117
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A04ECA.

Country allocation

The ICAO 24-bit address A04ECA 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
BTZ119 - 117 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 BTZ119 - Jul 16, 14:40 UTCJul 16, 15:45 UTC1h 5m
2026-07-16 BTZ119 - Jul 16, 14:10 UTCJul 16, 14:29 UTC20m
2026-07-16 BTZ119 - Jul 16, 13:30 UTCJul 16, 13:40 UTC10m
2026-07-16 BTZ119 - Jul 16, 12:55 UTCJul 16, 13:10 UTC15m
2026-07-14 BTZ119 - Jul 14, 14:25 UTCJul 14, 15:05 UTC40m
2026-07-14 BTZ119 - Jul 14, 13:25 UTCJul 14, 13:40 UTC15m
2026-07-14 BTZ119 - Jul 14, 12:55 UTCJul 14, 13:10 UTC15m
2026-07-13 BTZ119 - Jul 13, 12:45 UTCJul 13, 13:00 UTC15m
2026-07-13 BTZ119 - Jul 13, 12:20 UTCJul 13, 12:35 UTC15m
2026-07-09 BTZ119 - Jul 9, 13:00 UTCJul 9, 14:45 UTC1h 45m
2026-07-07 BTZ119 FRG → FRG Jul 7, 18:10 UTCJul 7, 18:55 UTC45m
2026-07-07 BTZ119 - Jul 7, 16:15 UTCJul 7, 17:00 UTC45m
2026-07-07 BTZ119 FRG → FRG Jul 7, 14:55 UTCJul 7, 15:40 UTC45m
2026-07-01 BTZ119 - Jul 1, 22:10 UTCJul 1, 22:50 UTC40m
2026-07-01 BTZ119 - Jul 1, 19:50 UTCJul 1, 20:35 UTC45m
2026-07-01 BTZ119 - Jul 1, 18:20 UTCJul 1, 19:10 UTC50m
2026-06-30 BTZ119 - Jun 30, 14:45 UTCJun 30, 15:00 UTC15m
2026-06-30 BTZ119 - Jun 30, 14:20 UTCJun 30, 14:35 UTC15m
2026-06-30 BTZ119 - Jun 30, 13:30 UTCJun 30, 13:45 UTC15m
2026-06-30 BTZ119 - Jun 30, 13:00 UTCJun 30, 13:20 UTC20m
2026-06-25 BTZ119 - Jun 25, 15:54 UTCJun 25, 16:09 UTC15m
2026-06-25 BTZ119 - Jun 25, 14:44 UTCJun 25, 15:50 UTC1h 5m
2026-06-25 BTZ119 - Jun 25, 14:20 UTCJun 25, 14:34 UTC15m
2026-06-25 BTZ119 - Jun 25, 13:29 UTCJun 25, 13:45 UTC15m
2026-06-25 BTZ119 - Jun 25, 13:00 UTCJun 25, 13:14 UTC15m
2026-06-23 BTZ119 - Jun 23, 16:24 UTCJun 23, 18:14 UTC1h 50m
2026-06-23 BTZ119 - Jun 23, 13:34 UTCJun 23, 14:25 UTC50m
2026-06-18 BTZ119 FRG → FRG Jun 18, 16:45 UTCJun 18, 17:30 UTC45m
2026-06-18 BTZ119 - Jun 18, 12:45 UTCJun 18, 13:30 UTC45m
2026-06-16 BTZ119 - Jun 16, 14:45 UTCJun 16, 15:20 UTC35m
2026-06-16 BTZ119 FRG → FRG Jun 16, 13:09 UTCJun 16, 13:55 UTC45m
2026-06-14 BTZ119 - Jun 14, 11:35 UTCJun 14, 11:50 UTC15m
2026-06-14 BTZ119 - Jun 14, 11:10 UTCJun 14, 11:25 UTC15m
2026-06-11 BTZ119 - Jun 11, 15:20 UTCJun 11, 16:00 UTC40m
2026-06-11 BTZ119 - Jun 11, 13:50 UTCJun 11, 14:30 UTC40m
2026-06-09 BTZ119 - Jun 9, 14:55 UTCJun 9, 15:10 UTC15m
2026-06-09 BTZ119 - Jun 9, 14:30 UTCJun 9, 14:45 UTC15m
2026-06-09 BTZ119 - Jun 9, 13:35 UTCJun 9, 13:50 UTC15m
2026-06-09 BTZ119 - Jun 9, 13:00 UTCJun 9, 13:20 UTC20m
2026-06-07 BTZ119 - Jun 7, 14:30 UTCJun 7, 14:55 UTC25m
2026-06-07 BTZ119 - Jun 7, 12:50 UTCJun 7, 13:55 UTC1h 5m
2026-06-04 BTZ119 - Jun 4, 14:50 UTCJun 4, 15:30 UTC40m
2026-06-04 BTZ119 - Jun 4, 13:00 UTCJun 4, 13:40 UTC40m
2026-06-02 BTZ119 - Jun 2, 15:55 UTCJun 2, 16:40 UTC45m
2026-06-02 BTZ119 - Jun 2, 15:00 UTCJun 2, 15:15 UTC15m
2026-06-02 BTZ119 - Jun 2, 14:30 UTCJun 2, 14:50 UTC20m
2026-06-02 BTZ119 - Jun 2, 13:35 UTCJun 2, 13:55 UTC20m
2026-06-02 BTZ119 - Jun 2, 13:10 UTCJun 2, 13:25 UTC15m
2026-05-31 BTZ119 FRG → FRG May 31, 12:05 UTCMay 31, 12:50 UTC45m
2026-05-28 BTZ119 - May 28, 18:00 UTCMay 28, 18:20 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 N119MW page for operator, model, and routing details .

Mode-S A04ECA frequently asked

What is Mode-S code A04ECA?
A04ECA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N119MW.
Where is Mode-S A04ECA registered?
Mode-S code A04ECA 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 A04ECA 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 A04ECA, octal 50047312, decimal 10,505,930.
What flights does A04ECA operate?
Mode-S A04ECA has broadcast 1 distinct callsign, including BTZ119.