Apparatus

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sensors Mode-S transponder

A3DF4A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N349FR · AIRBUS A-320neo · operated by UMB BANK NA TRUSTEE

Hex
A3DF4A
Octal
50757512
Decimal
10,739,530
Country
US
Tail
N349FR
Type
A20N
No current signal · last broadcast 23m ago
Flights observed
277
Distinct callsigns
20
Country
US
Last broadcast
23m ago

Last known position

Most recent position reported by Mode-S A3DF4A.

Country allocation

The ICAO 24-bit address A3DF4A 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
FFT688 Frontier Airlines 7 2026-05-28
FFT689 Frontier Airlines 6 2026-05-28
FFT2440 Frontier Airlines 5 2026-05-17
FFT685 Frontier Airlines 4 2026-05-22
FFT3046 Frontier Airlines 4 2026-06-11
FFT2297 Frontier Airlines 4 2026-06-11
FFT2216 Frontier Airlines 4 2026-04-22
FFT1230 Frontier Airlines 4 2026-05-19
FFT9449 Frontier Airlines 3 2026-05-05
FFT690 Frontier Airlines 3 2026-05-21
FFT4545 - 3 2026-04-13
FFT4195 - 3 2026-04-13
FFT3565 Frontier Airlines 3 2026-05-27
FFT3358 Frontier Airlines 3 2026-05-15
FFT3357 Frontier Airlines 3 2026-05-15
FFT3315 Frontier Airlines 3 2026-06-04
FFT2291 Frontier Airlines 3 2026-06-09
FFT1324 Frontier Airlines 3 2026-05-28
FFT1279 - 3 2026-04-13
FFT125 Frontier Airlines 3 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 FFT4401 LAS → SFO Jun 13, 01:30 UTCJun 13, 02:30 UTC1h 0m
2026-06-12 FFT3292 LAX → LAS Jun 12, 19:45 UTCJun 12, 20:35 UTC50m
2026-06-12 FFT4129 SLC → LAX Jun 12, 16:25 UTCJun 12, 17:55 UTC1h 30m
2026-06-12 FFT3016 LAS → SLC Jun 12, 14:15 UTCJun 12, 15:15 UTC1h 0m
2026-06-12 FFT3923 ATL → LAS Jun 12, 02:55 UTCJun 12, 06:35 UTC3h 40m
2026-06-11 FFT3046 MSP → ATL Jun 11, 21:55 UTCJun 12, 00:20 UTC2h 25m
2026-06-11 FFT3045 ATL → MSP Jun 11, 16:30 UTCJun 11, 18:40 UTC2h 10m
2026-06-11 FFT2297 PHL → FLL Jun 11, 13:35 UTCJun 11, 15:05 UTC1h 30m
2026-06-11 FFT2297 PHL → FLL Jun 11, 13:16 UTCJun 11, 15:02 UTC1h 46m
2026-06-11 FFT1004 ATL → PHL Jun 11, 09:20 UTCJun 11, 10:55 UTC1h 35m
2026-06-11 FFT3046 MSP → ATL Jun 11, 05:00 UTCJun 11, 07:25 UTC2h 25m
2026-06-10 FFT3046 MSP → ATL Jun 10, 18:40 UTCJun 10, 21:25 UTC2h 45m
2026-06-10 FFT2297 PHL → FLL Jun 10, 14:45 UTCJun 10, 16:15 UTC1h 30m
2026-06-10 FFT1004 ATL → PHL Jun 10, 11:50 UTCJun 10, 13:30 UTC1h 40m
2026-06-10 FFT1157 ORD → MCO Jun 10, 04:35 UTCJun 10, 06:10 UTC1h 35m
2026-06-10 FFT1158 ATL → EWR Jun 10, 01:20 UTCJun 10, 03:00 UTC1h 40m
2026-06-09 FFT124 MBJ → ATL Jun 9, 21:30 UTCJun 9, 23:20 UTC1h 50m
2026-06-09 FFT125 ATL → MBJ Jun 9, 16:45 UTCJun 9, 17:35 UTC50m
2026-06-09 FFT125 ATL → MBJ Jun 9, 15:45 UTCJun 9, 15:50 UTC5m
2026-06-09 FFT125 ATL → MBJ Jun 9, 15:41 UTCJun 9, 18:19 UTC2h 38m
2026-06-09 FFT2292 MDW → ATL Jun 9, 11:45 UTCJun 9, 13:15 UTC1h 30m
2026-06-09 FFT2291 ATL → MDW Jun 9, 01:20 UTCJun 9, 02:50 UTC1h 30m
2026-06-08 FFT1123 FLL → ATL Jun 8, 22:15 UTCJun 8, 23:40 UTC1h 25m
2026-06-08 FFT1123 FLL → ATL Jun 8, 21:56 UTCJun 8, 23:39 UTC1h 43m
2026-06-08 FFT3014 ATL → TPA Jun 8, 19:25 UTCJun 8, 20:45 UTC1h 20m
2026-06-08 FFT1116 LAS → ATL Jun 8, 14:05 UTCJun 8, 17:40 UTC3h 35m
2026-06-08 FFT1821 CLE → LAS Jun 8, 03:00 UTCJun 8, 06:55 UTC3h 55m
2026-06-07 FFT3232 LAS → CLE Jun 7, 20:35 UTCJun 8, 00:10 UTC3h 35m
2026-06-07 FFT4277 IAD → LAS Jun 7, 13:50 UTCJun 7, 18:20 UTC4h 30m
2026-06-07 FFT4278 SAN → DFW Jun 7, 08:25 UTCJun 7, 12:25 UTC4h 0m
2026-06-07 FFT2408 SEA → LAS Jun 7, 03:35 UTCJun 7, 05:35 UTC2h 0m
2026-06-06 FFT2275 ONT → SEA Jun 6, 23:15 UTCJun 7, 01:24 UTC2h 10m
2026-06-06 FFT1357 LAS → ONT Jun 6, 21:04 UTCJun 6, 21:44 UTC40m
2026-06-06 FFT4891 ATL → LAS Jun 6, 15:30 UTCJun 6, 19:19 UTC3h 50m
2026-06-06 FFT2467 CLE → ATL Jun 6, 11:39 UTCJun 6, 12:30 UTC50m
2026-06-06 FFT2467 CLE → ATL Jun 6, 11:40 UTCJun 6, 13:51 UTC2h 11m
2026-06-06 FFT1832 TPA → CLE Jun 6, 02:15 UTCJun 6, 04:20 UTC2h 5m
2026-06-05 FFT1831 CLE → TPA Jun 5, 22:35 UTCJun 6, 00:40 UTC2h 5m
2026-06-05 FFT3073 RDU → CLE Jun 5, 19:50 UTCJun 5, 21:00 UTC1h 10m
2026-06-05 FFT3074 CLE → RDU Jun 5, 17:25 UTCJun 5, 18:30 UTC1h 5m
2026-06-05 FFT2410 ATL → CLE Jun 5, 14:45 UTCJun 5, 16:05 UTC1h 20m
2026-06-05 FFT4601 EWR → ATL Jun 5, 10:10 UTCJun 5, 11:55 UTC1h 45m
2026-06-05 FFT4602 FLL → PHL Jun 5, 03:20 UTCJun 5, 05:00 UTC1h 40m
2026-06-04 FFT3453 PHL → MIA Jun 4, 23:20 UTCJun 5, 01:05 UTC1h 45m
2026-06-04 FFT3454 MIA → PHL Jun 4, 19:50 UTCJun 4, 21:40 UTC1h 50m
2026-06-04 FFT4076 IAH → ATL Jun 4, 16:40 UTCJun 4, 18:10 UTC1h 30m
2026-06-04 FFT2399 ATL → IAH Jun 4, 12:55 UTCJun 4, 14:30 UTC1h 35m
2026-06-04 FFT3216 LAX → ATL Jun 4, 06:55 UTCJun 4, 11:00 UTC4h 5m
2026-06-04 FFT3316 SMF → LAX Jun 4, 03:25 UTCJun 4, 04:25 UTC1h 0m
2026-06-04 FFT3315 LAX → SMF Jun 4, 01:05 UTCJun 4, 02:15 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 N349FR page for operator, model, and routing details .

Mode-S A3DF4A frequently asked

What is Mode-S code A3DF4A?
A3DF4A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N349FR.
Where is Mode-S A3DF4A registered?
Mode-S code A3DF4A 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 A3DF4A broadcasting right now?
No active broadcast right now. Last signal was 23m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3DF4A, octal 50757512, decimal 10,739,530.
What flights does A3DF4A operate?
Mode-S A3DF4A has broadcast 20 distinct callsigns, including FFT688, FFT689, FFT2440, FFT685, FFT3046.