Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD8ECF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N973AE · AEROSPATIALE AS-350 Ecureuil · operated by PHI HEALTH LLC

Hex
AD8ECF
Octal
53307317
Decimal
11,374,287
Country
US
Tail
N973AE
Type
AS50
No current signal · last broadcast Jul 26, 04:45 UTC
Flights observed
74
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 04:45 UTC

Last known position

Most recent position reported by Mode-S AD8ECF.

Country allocation

The ICAO 24-bit address AD8ECF 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
N973AE - 74 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N973AE - Jul 26, 04:30 UTCJul 26, 04:45 UTC15m
2026-07-25 N973AE - Jul 25, 23:10 UTCJul 25, 23:35 UTC25m
2026-07-25 N973AE - Jul 25, 04:05 UTCJul 25, 04:25 UTC20m
2026-07-25 N973AE - Jul 25, 02:25 UTCJul 25, 02:40 UTC15m
2026-07-23 N973AE - Jul 23, 21:20 UTCJul 23, 21:35 UTC15m
2026-07-23 N973AE - Jul 23, 16:00 UTCJul 23, 16:20 UTC20m
2026-07-20 N973AE - Jul 20, 01:00 UTCJul 20, 01:25 UTC25m
2026-07-19 N973AE - Jul 19, 22:20 UTCJul 19, 22:35 UTC15m
2026-07-17 N973AE - Jul 17, 09:55 UTCJul 17, 11:25 UTC1h 30m
2026-07-03 N973AE - Jul 3, 16:05 UTCJul 3, 16:15 UTC10m
2026-07-03 N973AE - Jul 3, 14:20 UTCJul 3, 14:35 UTC15m
2026-07-02 N973AE - Jul 2, 02:00 UTCJul 2, 02:35 UTC35m
2026-07-02 N973AE - Jul 2, 00:55 UTCJul 2, 01:25 UTC30m
2026-07-01 N973AE - Jul 1, 00:15 UTCJul 1, 01:45 UTC1h 30m
2026-06-22 N973AE - Jun 22, 18:49 UTCJun 22, 19:19 UTC30m
2026-06-22 N973AE - Jun 22, 17:44 UTCJun 22, 17:55 UTC10m
2026-06-22 N973AE - Jun 22, 16:40 UTCJun 22, 16:54 UTC15m
2026-06-20 N973AE - Jun 20, 00:34 UTCJun 20, 00:49 UTC15m
2026-06-19 N973AE - Jun 19, 23:49 UTCJun 19, 23:59 UTC10m
2026-06-19 N973AE - Jun 19, 22:24 UTCJun 19, 22:39 UTC15m
2026-06-18 N973AE - Jun 18, 15:20 UTCJun 18, 16:25 UTC1h 5m
2026-06-18 N973AE - Jun 18, 14:05 UTCJun 18, 14:40 UTC35m
2026-06-13 N973AE - Jun 13, 20:40 UTCJun 13, 21:15 UTC35m
2026-06-13 N973AE - Jun 13, 19:40 UTCJun 13, 19:55 UTC15m
2026-06-12 N973AE - Jun 12, 00:15 UTCJun 12, 00:30 UTC15m
2026-06-11 N973AE - Jun 11, 22:20 UTCJun 11, 22:35 UTC15m
2026-06-07 N973AE - Jun 7, 22:10 UTCJun 7, 23:05 UTC55m
2026-06-07 N973AE - Jun 7, 20:55 UTCJun 7, 21:15 UTC20m
2026-06-07 N973AE - Jun 7, 02:10 UTCJun 7, 02:55 UTC45m
2026-06-07 N973AE - Jun 7, 01:09 UTCJun 7, 01:24 UTC15m
2026-06-02 N973AE - Jun 2, 09:20 UTCJun 2, 09:35 UTC15m
2026-06-02 N973AE - Jun 2, 07:20 UTCJun 2, 07:35 UTC15m
2026-06-01 N973AE - Jun 1, 10:50 UTCJun 1, 11:05 UTC15m
2026-06-01 N973AE - Jun 1, 08:30 UTCJun 1, 08:45 UTC15m
2026-05-29 N973AE - May 29, 10:35 UTCMay 29, 10:55 UTC20m
2026-05-29 N973AE - May 29, 09:35 UTCMay 29, 10:00 UTC25m
2026-05-24 N973AE - May 24, 03:10 UTCMay 24, 03:50 UTC40m
2026-05-24 N973AE - May 24, 01:55 UTCMay 24, 02:35 UTC40m
2026-05-20 N973AE - May 20, 08:30 UTCMay 20, 09:10 UTC40m
2026-05-19 N973AE - May 19, 06:40 UTCMay 19, 06:50 UTC10m
2026-05-19 N973AE - May 19, 05:10 UTCMay 19, 05:20 UTC10m
2026-05-18 N973AE - May 18, 21:00 UTCMay 18, 21:55 UTC55m
2026-05-15 N973AE - May 15, 10:45 UTCMay 15, 10:55 UTC10m
2026-05-14 N973AE - May 14, 06:55 UTCMay 14, 08:00 UTC1h 5m
2026-05-13 N973AE - May 13, 02:15 UTCMay 13, 02:55 UTC40m
2026-05-12 N973AE - May 12, 22:55 UTCMay 12, 23:10 UTC15m
2026-05-12 N973AE - May 12, 21:10 UTCMay 12, 21:20 UTC10m
2026-05-11 N973AE - May 11, 03:40 UTCMay 11, 03:55 UTC15m
2026-05-11 N973AE - May 11, 02:55 UTCMay 11, 03:00 UTC5m
2026-05-11 N973AE - May 11, 01:55 UTCMay 11, 02:00 UTC5m

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 N973AE page for operator, model, and routing details .

Mode-S AD8ECF frequently asked

What is Mode-S code AD8ECF?
AD8ECF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N973AE.
Where is Mode-S AD8ECF registered?
Mode-S code AD8ECF 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 AD8ECF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 04:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD8ECF, octal 53307317, decimal 11,374,287.
What flights does AD8ECF operate?
Mode-S AD8ECF has broadcast 1 distinct callsign, including N973AE.