Apparatus

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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 Jul 26, 21:35 UTC
Flights observed
814
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

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
ENY3402 - 12 2026-07-17
ENY3553 - 10 2026-07-05
ENY3437 - 10 2026-07-08
ENY3812 - 9 2026-06-25
ENY3592 Envoy Air 9 2026-07-26
ENY3785 Envoy Air 8 2026-07-24
ENY3741 - 8 2026-07-06
ENY3645 - 8 2026-07-06
ENY3475 - 8 2026-07-16
ENY4330 - 7 2026-07-02
ENY4218 - 7 2026-07-14
ENY4185 - 7 2026-07-15
ENY4018 Envoy Air 7 2026-07-19
ENY3996 Envoy Air 7 2026-06-17
ENY3836 - 7 2026-07-16
ENY3743 Envoy Air 7 2026-05-14
ENY3695 - 7 2026-06-21
ENY3639 - 7 2026-07-11
ENY4112 - 6 2026-06-20
ENY4036 - 6 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3592 CMH → DFW Jul 26, 20:40 UTCJul 26, 21:35 UTC55m
2026-07-26 ENY3592 CMH → DFW Jul 26, 17:35 UTCJul 26, 18:30 UTC55m
2026-07-26 ENY3789 ORD → EWR Jul 26, 14:40 UTCJul 26, 15:35 UTC55m
2026-07-26 ENY3789 ORD → EWR Jul 26, 13:00 UTCJul 26, 13:55 UTC55m
2026-07-26 ENY3942 PHX → STS Jul 26, 10:40 UTCJul 26, 11:00 UTC20m
2026-07-26 ENY3942 PHX → STS Jul 26, 10:33 UTCJul 26, 10:58 UTC25m
2026-07-26 ENY3949 CVG → AUS Jul 26, 04:20 UTCJul 26, 04:40 UTC20m
2026-07-26 ENY3544 ORD → CMI Jul 26, 00:35 UTCJul 26, 02:20 UTC1h 45m
2026-07-25 ENY4183 PNS → MIA Jul 25, 21:10 UTCJul 25, 22:50 UTC1h 40m
2026-07-25 ENY4183 PNS → MIA Jul 25, 18:30 UTCJul 25, 19:50 UTC1h 20m
2026-07-25 ENY3775 BNA → ORD Jul 25, 15:35 UTCJul 25, 17:00 UTC1h 25m
2026-07-25 ENY3775 BNA → ORD Jul 25, 13:35 UTCJul 25, 14:50 UTC1h 15m
2026-07-25 ENY3672 IAH → ORD Jul 25, 10:25 UTCJul 25, 11:25 UTC1h 0m
2026-07-25 ENY3684 DFW → BHM Jul 25, 01:40 UTCJul 25, 02:40 UTC1h 0m
2026-07-24 ENY3785 DCA → RSW Jul 24, 21:50 UTCJul 24, 23:30 UTC1h 40m
2026-07-24 ENY3785 DCA → RSW Jul 24, 19:05 UTCJul 24, 20:40 UTC1h 35m
2026-07-24 ENY3476 ATL → ORD Jul 24, 16:50 UTCJul 24, 17:30 UTC40m
2026-07-24 ENY3476 ATL → ORD Jul 24, 15:25 UTCJul 24, 15:50 UTC25m
2026-07-23 ENY3407 ABI → DFW Jul 23, 22:55 UTCJul 24, 00:35 UTC1h 40m
2026-07-23 ENY3407 ABI → DFW Jul 23, 20:40 UTCJul 23, 22:00 UTC1h 20m
2026-07-23 ENY3600 CMH → CLT Jul 23, 16:40 UTCJul 23, 18:25 UTC1h 45m
2026-07-23 ENY3600 CMH → CLT Jul 23, 13:40 UTCJul 23, 15:25 UTC1h 45m
2026-07-23 ENY4272 ORD → AUS Jul 23, 10:15 UTCJul 23, 12:10 UTC1h 55m
2026-07-23 ENY4272 ORD → AUS Jul 23, 10:14 UTCJul 23, 12:00 UTC1h 46m
2026-07-23 ENY4271 EYW → DCA Jul 23, 01:30 UTCJul 23, 02:50 UTC1h 20m
2026-07-23 ENY4271 EYW → DCA Jul 23, 01:27 UTCJul 23, 02:49 UTC1h 22m
2026-07-22 ENY4151 AVL → DFW Jul 22, 22:35 UTCJul 22, 23:40 UTC1h 5m
2026-07-22 ENY4151 AVL → DFW Jul 22, 20:20 UTCJul 22, 21:25 UTC1h 5m
2026-07-22 ENY3649 - Jul 22, 17:05 UTCJul 22, 18:00 UTC55m
2026-07-22 ENY3649 - Jul 22, 15:25 UTCJul 22, 16:10 UTC45m
2026-07-22 ENY3681 - Jul 22, 12:10 UTCJul 22, 13:35 UTC1h 25m
2026-07-22 ENY3873 MSY → MIA Jul 22, 02:50 UTCJul 22, 03:40 UTC50m
2026-07-22 ENY3511 DCA → DSM Jul 22, 00:10 UTCJul 22, 01:30 UTC1h 20m
2026-07-21 ENY3511 DCA → DSM Jul 21, 22:15 UTCJul 21, 22:50 UTC35m
2026-07-21 ENY3815 STL → ORD Jul 21, 19:45 UTCJul 21, 20:40 UTC55m
2026-07-21 ENY3815 - Jul 21, 18:00 UTCJul 21, 18:45 UTC45m
2026-07-21 ENY3480 - Jul 21, 15:55 UTCJul 21, 16:55 UTC1h 0m
2026-07-21 ENY3480 COU → ORD Jul 21, 15:52 UTCJul 21, 16:52 UTC1h 0m
2026-07-21 ENY3480 - Jul 21, 14:10 UTCJul 21, 15:00 UTC50m
2026-07-21 ENY3655 ZIH → DFW Jul 21, 11:30 UTCJul 21, 12:20 UTC50m
2026-07-21 ENY3655 ZIH → DFW Jul 21, 11:24 UTCJul 21, 12:19 UTC55m
2026-07-21 ENY3745 - Jul 21, 01:15 UTCJul 21, 02:05 UTC50m
2026-07-20 ENY3972 BOS → ORD Jul 20, 23:20 UTCJul 21, 00:00 UTC39m
2026-07-20 ENY3972 BOS → ORD Jul 20, 21:40 UTCJul 20, 22:05 UTC25m
2026-07-20 ENY3719 - Jul 20, 19:25 UTCJul 20, 20:30 UTC1h 5m
2026-07-20 ENY3375 - Jul 20, 17:20 UTCJul 20, 18:20 UTC1h 0m
2026-07-20 ENY3973 BNA → ORD Jul 20, 14:15 UTCJul 20, 15:30 UTC1h 15m
2026-07-20 ENY3973 - Jul 20, 12:00 UTCJul 20, 12:55 UTC55m
2026-07-20 ENY4247 AUS → CVG Jul 20, 09:15 UTCJul 20, 10:35 UTC1h 20m
2026-07-20 ENY4219 MSY → AUS Jul 20, 02:40 UTCJul 20, 03:50 UTC1h 10m

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 Jul 26, 21:35 UTC.
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 ENY3402, ENY3553, ENY3437, ENY3812, ENY3592.