Apparatus

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sensors Mode-S transponder

A34B15

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N311FR · AIRBUS A-320neo · operated by BANK OF UTAH TRUSTEE

Hex
A34B15
Octal
50645425
Decimal
10,701,589
Country
US
Tail
N311FR
Type
A20N
No current signal · last broadcast 28d ago
Flights observed
44
Distinct callsigns
20
Country
US
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S A34B15.

Country allocation

The ICAO 24-bit address A34B15 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
FFT2871 Frontier Airlines 3 2026-04-16
FFT1790 Frontier Airlines 3 2026-04-29
FFT1660 - 3 2026-04-13
FFT9011 Frontier Airlines 2 2026-05-01
FFT4190 - 2 2026-04-13
FFT3599 Frontier Airlines 2 2026-04-17
FFT2173 - 2 2026-04-14
FFT2082 - 2 2026-04-16
FFT1659 - 2 2026-04-13
FFT1264 - 2 2026-04-14
FFT1112 - 2 2026-04-13
FFT9611 - 1 2026-04-25
FFT4344 Frontier Airlines 1 2026-04-27
FFT4061 Frontier Airlines 1 2026-04-26
FFT3439 Frontier Airlines 1 2026-04-27
FFT3376 Frontier Airlines 1 2026-04-27
FFT3375 Frontier Airlines 1 2026-04-27
FFT2553 Frontier Airlines 1 2026-04-28
FFT2310 - 1 2026-04-13
FFT1927 Frontier Airlines 1 2026-04-27

Recent flights last 44

DateFlightRouteTakeoffLandingDuration
2026-05-01 FFT9011 DEN → TPA May 1, 14:25 UTCMay 1, 16:00 UTC1h 35m
2026-05-01 FFT9011 DEN → TPA May 1, 14:13 UTCMay 1, 16:06 UTC1h 53m
2026-04-29 FFT1790 PDX → DEN Apr 29, 07:29 UTCApr 29, 07:35 UTC5m
2026-04-28 FFT1790 PDX → DEN Apr 28, 19:45 UTCApr 28, 21:50 UTC2h 5m
2026-04-28 FFT1790 PDX → DEN Apr 28, 19:48 UTCApr 28, 21:49 UTC2h 1m
2026-04-28 FFT2553 DEN → PDX Apr 28, 16:15 UTCApr 28, 18:35 UTC2h 20m
2026-04-28 FFT1500 ONT → DEN Apr 28, 08:15 UTCApr 28, 09:50 UTC1h 35m
2026-04-28 FFT1261 DEN → ONT Apr 28, 05:05 UTCApr 28, 07:05 UTC2h 0m
2026-04-28 FFT1091 IND → MCO Apr 28, 00:55 UTCApr 28, 03:05 UTC2h 10m
2026-04-27 FFT4344 DEN → XNA Apr 27, 22:20 UTCApr 27, 23:30 UTC1h 10m
2026-04-27 FFT3375 MCI → DEN Apr 27, 19:25 UTCApr 27, 20:55 UTC1h 30m
2026-04-27 FFT3376 DEN → MCI Apr 27, 16:55 UTCApr 27, 18:05 UTC1h 10m
2026-04-27 FFT1230 MCO → GRB Apr 27, 13:10 UTCApr 27, 15:15 UTC2h 5m
2026-04-27 FFT3439 DEN → SFO Apr 27, 04:40 UTCApr 27, 06:55 UTC2h 15m
2026-04-27 FFT1927 OKC → DEN Apr 27, 01:30 UTCApr 27, 02:50 UTC1h 20m
2026-04-26 FFT1864 DEN → OKC Apr 26, 23:10 UTCApr 27, 00:15 UTC1h 5m
2026-04-26 FFT4061 MSN → DEN Apr 26, 19:40 UTCApr 26, 21:35 UTC1h 55m
2026-04-26 FFT1560 DEN → MSN Apr 26, 16:40 UTCApr 26, 18:25 UTC1h 45m
2026-04-25 FFT9611 DEN → DEN Apr 25, 16:30 UTCApr 25, 17:40 UTC1h 10m
2026-04-17 FFT3599 ATL → DEN Apr 17, 03:20 UTCApr 17, 05:15 UTC1h 56m
2026-04-17 FFT3599 ATL → DEN Apr 17, 01:56 UTCApr 17, 05:14 UTC3h 18m
2026-04-16 FFT2871 SJU → ATL Apr 16, 23:20 UTCApr 17, 00:00 UTC40m
2026-04-16 FFT2871 SJU → ATL Apr 16, 22:40 UTCApr 16, 23:10 UTC30m
2026-04-16 FFT2871 SJU → ATL Apr 16, 20:45 UTCApr 16, 21:00 UTC15m
2026-04-16 FFT2082 - Apr 16, 18:50 UTCApr 16, 19:10 UTC20m
2026-04-16 FFT2082 - Apr 16, 16:00 UTCApr 16, 17:10 UTC1h 10m
2026-04-14 FFT1263 - Apr 14, 17:20 UTCApr 14, 18:45 UTC1h 25m
2026-04-14 FFT1264 - Apr 14, 14:50 UTCApr 14, 15:50 UTC1h 0m
2026-04-14 FFT1264 - Apr 14, 14:20 UTCApr 14, 14:45 UTC25m
2026-04-14 FFT2173 LAS → PDX Apr 14, 10:50 UTCApr 14, 12:05 UTC1h 15m
2026-04-14 FFT2173 - Apr 14, 10:40 UTCApr 14, 11:05 UTC25m
2026-04-13 FFT2310 - Apr 13, 22:10 UTCApr 13, 23:45 UTC1h 35m
2026-04-13 FFT1659 - Apr 13, 19:50 UTCApr 13, 20:50 UTC1h 0m
2026-04-13 FFT1659 - Apr 13, 18:30 UTCApr 13, 20:10 UTC1h 40m
2026-04-13 FFT1660 - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 FFT1660 - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 FFT1660 - Apr 13, 14:05 UTCApr 13, 16:15 UTC2h 10m
2026-04-13 FFT1111 RDU → MCO Apr 13, 10:14 UTCApr 13, 11:33 UTC1h 19m
2026-04-13 FFT1112 - Apr 13, 03:55 UTCApr 13, 04:20 UTC25m
2026-04-13 FFT1112 - Apr 13, 03:00 UTCApr 13, 04:15 UTC1h 15m
2026-04-13 FFT4190 - Apr 13, 00:20 UTCApr 13, 01:15 UTC55m
2026-04-12 FFT4190 - Apr 12, 23:55 UTCApr 13, 01:15 UTC1h 20m
2026-04-12 FFT1655 - Apr 12, 19:50 UTCApr 12, 20:15 UTC25m
2026-04-12 FFT1656 - Apr 12, 17:15 UTCApr 12, 17:40 UTC25m

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 N311FR page for operator, model, and routing details .

Mode-S A34B15 frequently asked

What is Mode-S code A34B15?
A34B15 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N311FR.
Where is Mode-S A34B15 registered?
Mode-S code A34B15 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 A34B15 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A34B15, octal 50645425, decimal 10,701,589.
What flights does A34B15 operate?
Mode-S A34B15 has broadcast 20 distinct callsigns, including FFT2871, FFT1790, FFT1660, FFT9011, FFT4190.