Apparatus

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sensors Mode-S transponder

A39AF6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N331QT · AIRBUS A-330-200 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A39AF6
Octal
50715366
Decimal
10,722,038
Country
US
Tail
N331QT
Type
A332
No current signal · last broadcast 1h ago
Flights observed
168
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A39AF6.

Country allocation

The ICAO 24-bit address A39AF6 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
TPA4093 Tampa Cargo 9 2026-05-28
TPA4087 Tampa Cargo 7 2026-05-24
TPA4091 Tampa Cargo 6 2026-04-27
TPA4015 Tampa Cargo 6 2026-05-28
TNO4269 Aerotransporte de Carga Union 6 2026-05-13
TPA4092 Tampa Cargo 5 2026-04-26
TPA4090 Tampa Cargo 5 2026-04-27
TPA4045 Tampa Cargo 5 2026-04-26
TPA4080 Tampa Cargo 4 2026-05-26
TPA4059 Tampa Cargo 4 2026-04-16
TPA4024 Tampa Cargo 4 2026-05-03
TPA4012 Tampa Cargo 4 2026-05-19
TPA4210 Tampa Cargo 3 2026-05-27
TPA4208 Tampa Cargo 3 2026-05-29
TPA4099 Tampa Cargo 3 2026-05-29
TPA4069 Tampa Cargo 3 2026-05-08
TPA4057 Tampa Cargo 3 2026-05-09
TPA4054 Tampa Cargo 3 2026-05-28
TPA4052 Tampa Cargo 3 2026-04-17
TPA4051 Tampa Cargo 3 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 TPA4009 MIA → BOG May 30, 13:00 UTCMay 30, 13:25 UTC25m
2026-05-30 TPA4010 BOG → MIA May 30, 06:50 UTCMay 30, 10:00 UTC3h 10m
2026-05-29 TPA4078 EZE → BOG May 29, 20:30 UTCMay 30, 02:20 UTC5h 50m
2026-05-29 TPA4099 MIA → EZE May 29, 10:00 UTCMay 29, 18:25 UTC8h 26m
2026-05-29 TPA4208 BOG → MIA May 29, 07:20 UTCMay 29, 07:55 UTC35m
2026-05-29 TPA4208 BOG → MIA May 29, 04:50 UTCMay 29, 05:05 UTC15m
2026-05-29 TPA4242 - May 29, 02:30 UTCMay 29, 02:45 UTC15m
2026-05-28 TPA4241 MIA → UIO May 28, 23:15 UTCMay 28, 23:30 UTC15m
2026-05-28 TPA4015 MIA → BOG May 28, 17:30 UTCMay 28, 20:45 UTC3h 15m
2026-05-28 TPA4202 BOG → MIA May 28, 14:00 UTCMay 28, 14:35 UTC35m
2026-05-28 TPA4054 VCP → BOG May 28, 03:35 UTCMay 28, 09:00 UTC5h 25m
2026-05-28 TPA4093 MIA → MVD May 28, 00:30 UTCMay 28, 02:20 UTC1h 50m
2026-05-27 TPA4093 MIA → MVD May 27, 14:30 UTCMay 27, 22:35 UTC8h 5m
2026-05-27 TPA4210 BOG → MIA May 27, 09:25 UTCMay 27, 09:55 UTC30m
2026-05-27 TPA4210 BOG → MIA May 27, 06:49 UTCMay 27, 07:05 UTC16m
2026-05-27 TPA4203 MIA → BOG May 27, 01:19 UTCMay 27, 04:30 UTC3h 10m
2026-05-26 TPA4080 BOG → MIA May 26, 18:19 UTCMay 26, 18:55 UTC35m
2026-05-26 TPA4080 BOG → MIA May 26, 15:45 UTCMay 26, 16:00 UTC15m
2026-05-26 TPA4080 BOG → MIA May 26, 04:54 UTCMay 26, 10:54 UTC6h 0m
2026-05-26 TPA4093 MIA → MVD May 26, 01:14 UTCMay 26, 01:49 UTC35m
2026-05-25 TPA4093 MIA → MVD May 25, 15:25 UTCMay 25, 23:35 UTC8h 9m
2026-05-25 TPA4214 BOG → MIA May 25, 12:45 UTCMay 25, 13:20 UTC35m
2026-05-25 TPA4214 BOG → MIA May 25, 10:05 UTCMay 25, 10:20 UTC15m
2026-05-24 TPA4084 BOG → MIA May 24, 18:25 UTCMay 24, 23:20 UTC4h 55m
2026-05-24 TPA4087 MIA → ASU May 24, 09:25 UTCMay 24, 16:05 UTC6h 40m
2026-05-23 TPA4226 ZAZ → MIA May 23, 20:30 UTCMay 24, 04:05 UTC7h 35m
2026-05-23 TPA4140 UIO → MIA May 23, 12:25 UTCMay 23, 18:45 UTC6h 21m
2026-05-23 TPA4080 BOG → MIA May 23, 03:10 UTCMay 23, 08:50 UTC5h 40m
2026-05-22 TPA4099 MIA → EZE May 22, 19:40 UTCMay 23, 01:15 UTC5h 35m
2026-05-22 TPA4099 MIA → EZE May 22, 17:00 UTCMay 22, 17:20 UTC20m
2026-05-22 TPA4094 SCL → MIA May 22, 10:10 UTCMay 22, 14:30 UTC4h 20m
2026-05-22 TPA4087 MIA → ASU May 22, 01:35 UTCMay 22, 02:25 UTC50m
2026-05-21 TPA4087 MIA → ASU May 21, 16:45 UTCMay 21, 23:35 UTC6h 50m
2026-05-21 TPA4030 UIO → MIA May 21, 02:10 UTCMay 21, 08:55 UTC6h 45m
2026-05-20 TPA4001 MIA → BOG May 20, 20:00 UTCMay 20, 23:00 UTC3h 0m
2026-05-20 TPA4220 MDE → MIA May 20, 17:10 UTCMay 20, 17:45 UTC35m
2026-05-19 TPA4015 MIA → BOG May 19, 23:05 UTCMay 19, 23:20 UTC15m
2026-05-19 TPA4015 MIA → BOG May 19, 17:50 UTCMay 19, 20:45 UTC2h 55m
2026-05-19 TPA4012 BOG → MIA May 19, 14:55 UTCMay 19, 15:40 UTC45m
2026-05-19 TPA4012 BOG → MIA May 19, 12:15 UTCMay 19, 12:30 UTC15m
2026-05-19 TPA4011 MIA → BOG May 19, 06:40 UTCMay 19, 09:35 UTC2h 55m
2026-05-18 TNO4276 NLU → MIA May 18, 14:25 UTCMay 18, 16:50 UTC2h 25m
2026-05-18 TNO4276 NLU → MIA May 18, 08:25 UTCMay 18, 12:30 UTC4h 5m
2026-05-17 TPA4060 VIX → BOG May 17, 21:30 UTCMay 18, 03:01 UTC5h 30m
2026-05-17 TPA4051 VCP → EZE May 17, 18:55 UTCMay 17, 19:30 UTC35m
2026-05-17 TPA4051 VCP → EZE May 17, 16:35 UTCMay 17, 16:55 UTC20m
2026-05-17 TPA4051 VCP → EZE May 17, 07:00 UTCMay 17, 13:50 UTC6h 50m
2026-05-16 TPA4037 MIA → GYE May 16, 13:41 UTCMay 17, 01:35 UTC11h 55m
2026-05-16 TPA4200 BOG → MIA May 16, 02:50 UTCMay 16, 03:20 UTC30m
2026-05-16 TPA4200 BOG → MIA May 16, 00:20 UTCMay 16, 00:30 UTC10m

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 N331QT page for operator, model, and routing details .

Mode-S A39AF6 frequently asked

What is Mode-S code A39AF6?
A39AF6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N331QT.
Where is Mode-S A39AF6 registered?
Mode-S code A39AF6 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 A39AF6 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 A39AF6, octal 50715366, decimal 10,722,038.
What flights does A39AF6 operate?
Mode-S A39AF6 has broadcast 20 distinct callsigns, including TPA4093, TPA4087, TPA4091, TPA4015, TNO4269.