Apparatus

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sensors Mode-S transponder

A7DE16

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N606FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A7DE16
Octal
51757026
Decimal
11,001,366
Country
US
Tail
N606FR
Type
A21N
Broadcasting now · callsign FFT3679 · 36,000 ft
Flights observed
463
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Current position

A7DE16 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A7DE16 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
FFT2695 - 7 2026-07-21
FFT3215 Frontier Airlines 6 2026-04-23
FFT2265 Frontier Airlines 6 2026-07-21
FFT2111 - 5 2026-07-18
FFT1774 Frontier Airlines 5 2026-07-21
FFT1726 Frontier Airlines 5 2026-07-21
FFT1446 - 5 2026-06-18
FFT4353 - 4 2026-07-06
FFT3930 - 4 2026-06-28
FFT3357 Frontier Airlines 4 2026-05-11
FFT1165 Frontier Airlines 4 2026-07-17
FFT87 Frontier Airlines 3 2026-05-22
FFT4639 - 3 2026-06-28
FFT4462 - 3 2026-07-19
FFT4440 - 3 2026-07-07
FFT44 Frontier Airlines 3 2026-05-22
FFT4278 - 3 2026-07-14
FFT3600 Frontier Airlines 3 2026-04-22
FFT3469 Frontier Airlines 3 2026-06-11
FFT3418 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT4385 CID → DEN Jul 26, 20:05 UTCJul 26, 21:30 UTC1h 25m
2026-07-26 FFT4386 DEN → CID Jul 26, 17:15 UTCJul 26, 18:45 UTC1h 30m
2026-07-26 FFT3156 LAX → DEN Jul 26, 13:40 UTCJul 26, 15:35 UTC1h 55m
2026-07-26 FFT4345 DEN → LAX Jul 26, 04:45 UTCJul 26, 06:35 UTC1h 51m
2026-07-26 FFT3707 SAT → DEN Jul 26, 00:55 UTCJul 26, 02:45 UTC1h 50m
2026-07-25 FFT2356 RSW → PHL Jul 25, 21:55 UTCJul 25, 23:40 UTC1h 45m
2026-07-25 FFT2225 RDU → DEN Jul 25, 16:40 UTCJul 25, 19:45 UTC3h 5m
2026-07-25 FFT2440 SEA → PHX Jul 25, 12:30 UTCJul 25, 15:20 UTC2h 50m
2026-07-24 FFT4418 ELP → DEN Jul 24, 22:25 UTCJul 25, 02:55 UTC4h 30m
2026-07-24 FFT3199 PHL → MCO Jul 24, 18:55 UTCJul 24, 20:30 UTC1h 35m
2026-07-24 FFT1150 DEN → MSP Jul 24, 16:15 UTCJul 24, 17:45 UTC1h 30m
2026-07-24 FFT3220 SLC → DEN Jul 24, 13:40 UTCJul 24, 14:45 UTC1h 5m
2026-07-24 FFT4251 DEN → SLC Jul 24, 04:45 UTCJul 24, 05:50 UTC1h 5m
2026-07-23 FFT71 CUN → DEN Jul 23, 21:00 UTCJul 24, 00:30 UTC3h 30m
2026-07-23 FFT316 IAH → CUN Jul 23, 17:00 UTCJul 23, 18:50 UTC1h 50m
2026-07-23 FFT3206 DEN → IAH Jul 23, 13:10 UTCJul 23, 15:00 UTC1h 50m
2026-07-23 FFT3599 ATL → DEN Jul 23, 03:10 UTCJul 23, 06:15 UTC3h 5m
2026-07-22 FFT152 CUN → ATL Jul 22, 20:15 UTCJul 22, 22:25 UTC2h 10m
2026-07-22 FFT153 ATL → CUN Jul 22, 16:20 UTCJul 22, 18:25 UTC2h 5m
2026-07-22 FFT1596 ORD → ATL Jul 22, 12:25 UTCJul 22, 13:50 UTC1h 25m
2026-07-22 FFT3345 SJU → ORD Jul 22, 03:00 UTCJul 22, 05:25 UTC2h 25m
2026-07-22 FFT3345 SJU → ORD Jul 22, 01:10 UTCJul 22, 01:25 UTC15m
2026-07-21 FFT1774 BWI → SJU Jul 21, 23:00 UTCJul 21, 23:20 UTC20m
2026-07-21 FFT1774 BWI → SJU Jul 21, 19:05 UTCJul 21, 21:15 UTC2h 10m
2026-07-21 FFT2265 ATL → TPA Jul 21, 14:35 UTCJul 21, 16:15 UTC1h 40m
2026-07-21 FFT2265 ATL → TPA Jul 21, 12:35 UTCJul 21, 12:50 UTC15m
2026-07-21 FFT1726 PHL → SJU Jul 21, 06:25 UTCJul 21, 06:50 UTC25m
2026-07-21 FFT1726 PHL → SJU Jul 21, 03:10 UTCJul 21, 04:15 UTC1h 5m
2026-07-21 FFT2695 - Jul 21, 00:55 UTCJul 21, 01:25 UTC30m
2026-07-21 FFT2695 - Jul 21, 00:40 UTCJul 21, 00:50 UTC10m
2026-07-20 FFT2695 - Jul 20, 22:00 UTCJul 20, 22:15 UTC15m
2026-07-20 FFT1774 BWI → SJU Jul 20, 20:15 UTCJul 20, 20:30 UTC15m
2026-07-20 FFT1774 BWI → SJU Jul 20, 17:15 UTCJul 20, 18:10 UTC55m
2026-07-20 FFT2265 ATL → TPA Jul 20, 13:55 UTCJul 20, 15:40 UTC1h 45m
2026-07-20 FFT2265 ATL → TPA Jul 20, 12:00 UTCJul 20, 12:15 UTC15m
2026-07-20 FFT1726 - Jul 20, 07:20 UTCJul 20, 07:40 UTC20m
2026-07-20 FFT1726 - Jul 20, 04:30 UTCJul 20, 05:20 UTC50m
2026-07-20 FFT2695 - Jul 20, 01:00 UTCJul 20, 02:45 UTC1h 45m
2026-07-19 FFT2695 - Jul 19, 22:55 UTCJul 19, 23:10 UTC15m
2026-07-19 FFT1774 BWI → SJU Jul 19, 18:00 UTCJul 19, 21:15 UTC3h 15m
2026-07-19 FFT2265 ATL → TPA Jul 19, 14:40 UTCJul 19, 15:30 UTC50m
2026-07-19 FFT2265 ATL → TPA Jul 19, 12:05 UTCJul 19, 12:15 UTC10m
2026-07-19 FFT4462 - Jul 19, 03:35 UTCJul 19, 06:45 UTC3h 10m
2026-07-19 FFT4462 - Jul 19, 03:15 UTCJul 19, 03:20 UTC5m
2026-07-19 FFT4462 - Jul 19, 02:40 UTCJul 19, 02:45 UTC5m
2026-07-19 FFT1015 SJU → PHL Jul 19, 00:05 UTCJul 19, 01:00 UTC55m
2026-07-18 FFT1015 SJU → PHL Jul 18, 21:40 UTCJul 18, 21:55 UTC15m
2026-07-18 FFT1015 SJU → PHL Jul 18, 21:41 UTCJul 19, 01:00 UTC3h 19m
2026-07-18 FFT1166 MCO → PHL Jul 18, 19:55 UTCJul 18, 20:15 UTC20m
2026-07-18 FFT1166 MCO → PHL Jul 18, 17:00 UTCJul 18, 17:30 UTC30m

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 N606FR page for operator, model, and routing details .

Mode-S A7DE16 frequently asked

What is Mode-S code A7DE16?
A7DE16 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N606FR.
Where is Mode-S A7DE16 registered?
Mode-S code A7DE16 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 A7DE16 broadcasting right now?
Yes. Mode-S A7DE16 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7DE16, octal 51757026, decimal 11,001,366.
What flights does A7DE16 operate?
Mode-S A7DE16 has broadcast 20 distinct callsigns, including FFT2695, FFT3215, FFT2265, FFT2111, FFT1774.