sensors Mode-S transponder

A9EC7F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N739AE · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A9EC7F
Octal
52366177
Decimal
11,136,127
Country
US
Tail
N739AE
Type
E170
No current signal · last broadcast 1d ago
Flights observed
11
Distinct callsigns
8
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A9EC7F.

Country allocation

The ICAO 24-bit address A9EC7F 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 8 distinct

Callsign Airline Flights Last seen
ENY4268 - 3 2026-04-13
ENY4160 - 2 2026-04-13
ENY4331 - 1 2026-04-13
ENY4328 - 1 2026-04-13
ENY3987 - 1 2026-04-13
ENY3568 Envoy Air 1 2026-04-13
ENY3557 - 1 2026-04-13
ENY3514 - 1 2026-04-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-13 ENY3568 MAF → DFW Apr 13, 22:50 UTCApr 13, 23:25 UTC35m
2026-04-13 ENY3987 - Apr 13, 20:38 UTCApr 13, 21:29 UTC51m
2026-04-13 ENY3557 - Apr 13, 17:38 UTCApr 13, 18:18 UTC40m
2026-04-13 ENY4268 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 ENY4268 LEX → ORD Apr 13, 15:13 UTCApr 13, 16:13 UTC1h 0m
2026-04-13 ENY4268 - Apr 13, 13:20 UTCApr 13, 14:15 UTC55m
2026-04-13 ENY4328 - Apr 13, 10:55 UTCApr 13, 11:48 UTC53m
2026-04-13 ENY4331 - Apr 13, 04:52 UTCApr 13, 05:25 UTC33m
2026-04-13 ENY4160 - Apr 13, 02:40 UTCApr 13, 03:55 UTC1h 15m
2026-04-12 ENY4160 - Apr 12, 23:55 UTCApr 13, 00:20 UTC25m
2026-04-12 ENY3514 - Apr 12, 18:55 UTCApr 12, 19:45 UTC50m

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 N739AE page for operator, model, and routing details .

Mode-S A9EC7F frequently asked

What is Mode-S code A9EC7F?
A9EC7F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N739AE.
Where is Mode-S A9EC7F registered?
Mode-S code A9EC7F 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 A9EC7F 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 A9EC7F, octal 52366177, decimal 11,136,127.
What flights does A9EC7F operate?
Mode-S A9EC7F has broadcast 8 distinct callsigns, including ENY4268, ENY4160, ENY4331, ENY4328, ENY3987.