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sensors Mode-S transponder

A9F64B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N741AK · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A9F64B
Octal
52373113
Decimal
11,138,635
Country
US
Tail
N741AK
Type
E170
No current signal · last broadcast 1h ago
Flights observed
722
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A9F64B.

Country allocation

The ICAO 24-bit address A9F64B 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 20 distinct

Callsign Airline Flights Last seen
ENY3553 - 10 2026-07-05
ENY3437 - 10 2026-07-08
ENY3812 - 9 2026-06-25
ENY3741 - 8 2026-07-06
ENY3645 - 8 2026-07-06
ENY3402 - 8 2026-07-14
ENY4330 - 7 2026-07-02
ENY4218 - 7 2026-07-14
ENY3996 Envoy Air 7 2026-06-17
ENY3743 Envoy Air 7 2026-05-14
ENY3695 - 7 2026-06-21
ENY3639 - 7 2026-07-11
ENY3592 - 7 2026-07-12
ENY4112 - 6 2026-06-20
ENY4036 - 6 2026-07-04
ENY3839 - 6 2026-07-01
ENY3785 Envoy Air 6 2026-06-30
ENY3769 - 6 2026-07-06
ENY3715 Envoy Air 6 2026-07-08
ENY3710 - 6 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ENY4218 - Jul 14, 14:55 UTCJul 14, 15:55 UTC1h 0m
2026-07-14 ENY3525 - Jul 14, 12:25 UTCJul 14, 13:35 UTC1h 10m
2026-07-14 ENY4282 - Jul 14, 06:05 UTCJul 14, 07:05 UTC1h 0m
2026-07-14 ENY3402 AUS → DFW Jul 14, 03:10 UTCJul 14, 04:10 UTC1h 0m
2026-07-14 ENY3402 AUS → DFW Jul 14, 03:09 UTCJul 14, 04:04 UTC55m
2026-07-14 ENY3402 - Jul 14, 00:05 UTCJul 14, 00:40 UTC35m
2026-07-13 ENY4185 AGU → DFW Jul 13, 19:07 UTCJul 13, 21:19 UTC2h 12m
2026-07-13 ENY4185 DFW → DFW Jul 13, 16:10 UTCJul 13, 21:15 UTC5h 5m
2026-07-13 ENY3736 - Jul 13, 12:55 UTCJul 13, 14:50 UTC1h 55m
2026-07-13 ENY3736 AGU → DFW Jul 13, 12:24 UTCJul 13, 14:39 UTC2h 15m
2026-07-13 ENY3735 - Jul 13, 05:25 UTCJul 13, 06:45 UTC1h 20m
2026-07-13 ENY3735 DFW → AGU Jul 13, 05:23 UTCJul 13, 07:15 UTC1h 52m
2026-07-13 ENY3365 - Jul 13, 02:45 UTCJul 13, 03:25 UTC40m
2026-07-12 ENY3365 - Jul 12, 22:10 UTCJul 12, 22:30 UTC20m
2026-07-12 ENY3592 - Jul 12, 19:50 UTCJul 12, 20:55 UTC1h 5m
2026-07-12 ENY3592 DFW → ICT Jul 12, 18:01 UTCJul 12, 19:01 UTC1h 0m
2026-07-12 ENY3748 - Jul 12, 15:20 UTCJul 12, 16:50 UTC1h 30m
2026-07-12 ENY3748 DFW → PNS Jul 12, 12:10 UTCJul 12, 13:35 UTC1h 25m
2026-07-12 ENY4186 - Jul 12, 10:15 UTCJul 12, 10:45 UTC30m
2026-07-12 ENY4166 - Jul 12, 04:10 UTCJul 12, 04:30 UTC20m
2026-07-12 ENY3402 AUS → DFW Jul 12, 01:00 UTCJul 12, 01:45 UTC45m
2026-07-11 ENY3402 DFW → AUS Jul 11, 22:35 UTCJul 11, 23:10 UTC35m
2026-07-11 ENY4185 DFW → DFW Jul 11, 16:20 UTCJul 11, 21:25 UTC5h 5m
2026-07-11 ENY3736 - Jul 11, 12:50 UTCJul 11, 14:20 UTC1h 30m
2026-07-11 ENY3735 - Jul 11, 02:40 UTCJul 11, 04:01 UTC1h 20m
2026-07-11 ENY3735 DFW → AGU Jul 11, 02:38 UTCJul 11, 04:24 UTC1h 46m
2026-07-11 ENY3639 LRD → DFW Jul 11, 00:05 UTCJul 11, 01:15 UTC1h 10m
2026-07-10 ENY3639 DFW → LRD Jul 10, 22:15 UTCJul 10, 23:10 UTC55m
2026-07-10 ENY3592 - Jul 10, 19:35 UTCJul 10, 20:25 UTC50m
2026-07-10 ENY3592 ICT → DFW Jul 10, 19:30 UTCJul 10, 20:23 UTC53m
2026-07-10 ENY3592 - Jul 10, 17:45 UTCJul 10, 18:40 UTC55m
2026-07-10 ENY3425 - Jul 10, 15:00 UTCJul 10, 16:35 UTC1h 35m
2026-07-10 ENY3425 - Jul 10, 12:40 UTCJul 10, 14:05 UTC1h 25m
2026-07-10 ENY4186 - Jul 10, 10:15 UTCJul 10, 10:40 UTC25m
2026-07-10 ENY4166 - Jul 10, 04:10 UTCJul 10, 04:35 UTC25m
2026-07-10 ENY3574 - Jul 10, 01:15 UTCJul 10, 02:25 UTC1h 10m
2026-07-10 ENY3574 HRL → DFW Jul 10, 01:08 UTCJul 10, 02:21 UTC1h 13m
2026-07-09 ENY3574 - Jul 9, 23:20 UTCJul 10, 00:20 UTC1h 0m
2026-07-09 ENY4090 - Jul 9, 20:00 UTCJul 9, 21:35 UTC1h 35m
2026-07-09 ENY4090 - Jul 9, 17:00 UTCJul 9, 18:30 UTC1h 30m
2026-07-09 ENY3789 - Jul 9, 14:50 UTCJul 9, 15:55 UTC1h 5m
2026-07-09 ENY3789 DFW → ICT Jul 9, 12:55 UTCJul 9, 13:55 UTC1h 0m
2026-07-09 ENY3544 - Jul 9, 01:00 UTCJul 9, 02:40 UTC1h 40m
2026-07-08 ENY3715 ORD → PVD Jul 8, 21:50 UTCJul 8, 22:20 UTC30m
2026-07-08 ENY3715 ORD → PVD Jul 8, 21:47 UTCJul 8, 22:15 UTC28m
2026-07-08 ENY4117 - Jul 8, 20:05 UTCJul 8, 20:40 UTC35m
2026-07-08 ENY4117 ORD → GRR Jul 8, 20:04 UTCJul 8, 20:36 UTC32m
2026-07-08 ENY3437 - Jul 8, 18:10 UTCJul 8, 18:35 UTC25m
2026-07-08 ENY3437 - Jul 8, 16:40 UTCJul 8, 17:10 UTC30m
2026-07-08 ENY4041 - Jul 8, 14:10 UTCJul 8, 15:00 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 N741AK page for operator, model, and routing details .

Mode-S A9F64B frequently asked

What is Mode-S code A9F64B?
A9F64B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N741AK.
Where is Mode-S A9F64B registered?
Mode-S code A9F64B 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 A9F64B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9F64B, octal 52373113, decimal 11,138,635.
What flights does A9F64B operate?
Mode-S A9F64B has broadcast 20 distinct callsigns, including ENY3553, ENY3437, ENY3812, ENY3741, ENY3645.