Apparatus

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sensors Mode-S transponder

A3F120

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N353NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3F120
Octal
50770440
Decimal
10,744,096
Country
US
Tail
N353NB
Type
A319
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A3F120.

Country allocation

The ICAO 24-bit address A3F120 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
DAL1075 - 22 2026-07-09
DAL2351 - 19 2026-07-09
DAL2283 - 19 2026-07-09
DAL1275 - 19 2026-07-08
DAL2305 Delta Air Lines 15 2026-05-18
DAL1279 Delta Air Lines 12 2026-05-27
DAL2659 Delta Air Lines 11 2026-04-20
DAL2147 - 10 2026-04-21
DAL1529 Delta Air Lines 10 2026-07-26
DAL1043 - 9 2026-06-28
DAL1038 Delta Air Lines 9 2026-05-27
DAL1077 - 8 2026-07-04
DAL487 Delta Air Lines 7 2026-07-03
DAL1281 Delta Air Lines 7 2026-04-19
DAL1018 Delta Air Lines 7 2026-05-27
DAL1003 Delta Air Lines 7 2026-06-07
DAL788 - 6 2026-07-17
DAL3135 Delta Air Lines 6 2026-07-01
DAL2934 - 6 2026-07-13
DAL2632 Delta Air Lines 6 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1529 TPA → DTW Jul 26, 21:05 UTCJul 26, 22:00 UTC55m
2026-07-26 DAL1218 AUS → DTW Jul 26, 17:15 UTCJul 26, 19:45 UTC2h 30m
2026-07-26 DAL1218 AUS → DTW Jul 26, 13:15 UTCJul 26, 15:40 UTC2h 25m
2026-07-26 DAL2091 ATL → DAB Jul 26, 10:40 UTCJul 26, 11:30 UTC50m
2026-07-25 DAL2097 MSP → LAS Jul 25, 21:25 UTCJul 25, 23:10 UTC1h 45m
2026-07-25 DAL2097 MSP → LAS Jul 25, 21:23 UTCJul 25, 23:08 UTC1h 45m
2026-07-25 DAL2057 DTW → MYR Jul 25, 18:40 UTCJul 25, 20:10 UTC1h 30m
2026-07-25 DAL2057 DTW → MYR Jul 25, 16:10 UTCJul 25, 17:30 UTC1h 20m
2026-07-24 DAL605 MEX → MSP Jul 24, 20:15 UTCJul 25, 00:05 UTC3h 50m
2026-07-24 DAL611 MSP → MEX Jul 24, 14:30 UTCJul 24, 18:20 UTC3h 50m
2026-07-24 DAL1193 SLC → SJC Jul 24, 10:20 UTCJul 24, 12:35 UTC2h 15m
2026-07-24 DAL2073 CHS → BOS Jul 24, 01:35 UTCJul 24, 02:35 UTC1h 0m
2026-07-23 DAL559 CVG → BOS Jul 23, 13:10 UTCJul 23, 15:40 UTC2h 30m
2026-07-22 DAL1012 FLL → LGA Jul 22, 17:00 UTCJul 22, 19:30 UTC2h 30m
2026-07-22 DAL1012 FLL → LGA Jul 22, 16:56 UTCJul 22, 19:30 UTC2h 34m
2026-07-22 DAL559 CVG → BOS Jul 22, 13:12 UTCJul 22, 15:42 UTC2h 30m
2026-07-22 DAL559 CVG → BOS Jul 22, 13:15 UTCJul 22, 15:45 UTC2h 30m
2026-07-21 DAL622 - Jul 21, 23:05 UTCJul 22, 01:40 UTC2h 35m
2026-07-21 DAL946 PHX → DTW Jul 21, 19:05 UTCJul 21, 21:45 UTC2h 40m
2026-07-21 DAL946 PHX → DTW Jul 21, 15:10 UTCJul 21, 17:40 UTC2h 30m
2026-07-21 DAL2176 YUL → ATL Jul 21, 02:15 UTCJul 21, 04:20 UTC2h 5m
2026-07-20 DAL2176 YUL → ATL Jul 20, 22:10 UTCJul 21, 00:10 UTC1h 59m
2026-07-20 DAL2148 MSP → RDU Jul 20, 18:40 UTCJul 20, 20:35 UTC1h 55m
2026-07-20 DAL2148 MSP → RDU Jul 20, 15:00 UTCJul 20, 17:00 UTC2h 0m
2026-07-20 DAL948 DFW → LAX Jul 20, 01:55 UTCJul 20, 04:24 UTC2h 29m
2026-07-20 DAL948 DFW → LAX Jul 20, 01:55 UTCJul 20, 04:40 UTC2h 45m
2026-07-19 DAL948 - Jul 19, 21:00 UTCJul 19, 23:45 UTC2h 45m
2026-07-19 DAL2965 BWI → DTW Jul 19, 19:01 UTCJul 19, 19:52 UTC51m
2026-07-19 DAL2965 BWI → DTW Jul 19, 19:05 UTCJul 19, 20:00 UTC55m
2026-07-19 DAL2965 BWI → DTW Jul 19, 16:50 UTCJul 19, 17:35 UTC45m
2026-07-19 DAL1216 IAH → LAX Jul 19, 12:45 UTCJul 19, 15:40 UTC2h 55m
2026-07-19 DAL1216 IAH → LAX Jul 19, 12:41 UTCJul 19, 15:30 UTC2h 49m
2026-07-18 DAL1529 - Jul 18, 20:10 UTCJul 18, 22:30 UTC2h 20m
2026-07-18 DAL1529 - Jul 18, 01:05 UTCJul 18, 03:40 UTC2h 36m
2026-07-17 DAL1529 - Jul 17, 21:20 UTCJul 17, 23:50 UTC2h 30m
2026-07-17 DAL788 SAT → DTW Jul 17, 16:40 UTCJul 17, 19:20 UTC2h 40m
2026-07-17 DAL788 - Jul 17, 12:40 UTCJul 17, 15:20 UTC2h 40m
2026-07-17 DAL2869 DCA → DTW Jul 17, 10:10 UTCJul 17, 11:15 UTC1h 5m
2026-07-17 DAL2729 MCO → DCA Jul 17, 01:59 UTCJul 17, 03:50 UTC1h 50m
2026-07-16 DAL2529 AUS → MCO Jul 16, 22:18 UTCJul 17, 00:32 UTC2h 14m
2026-07-16 DAL2529 AUS → MCO Jul 16, 22:19 UTCJul 17, 00:30 UTC2h 10m
2026-07-16 DAL1012 - Jul 16, 17:05 UTCJul 16, 19:40 UTC2h 35m
2026-07-16 DAL1012 DTW → AUS Jul 16, 17:03 UTCJul 16, 19:40 UTC2h 37m
2026-07-16 DAL2292 - Jul 16, 10:55 UTCJul 16, 11:34 UTC40m
2026-07-16 DAL2292 TVC → DTW Jul 16, 10:50 UTCJul 16, 11:27 UTC37m
2026-07-16 DAL2424 - Jul 16, 05:25 UTCJul 16, 06:00 UTC35m
2026-07-16 DAL2424 DTW → TVC Jul 16, 05:24 UTCJul 16, 06:02 UTC38m
2026-07-16 DAL1441 DFW → DTW Jul 16, 01:40 UTCJul 16, 04:00 UTC2h 20m
2026-07-15 DAL1543 - Jul 15, 21:25 UTCJul 16, 00:00 UTC2h 35m
2026-07-15 DAL2567 EWR → DTW Jul 15, 01:00 UTCJul 15, 02:20 UTC1h 20m

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 N353NB page for operator, model, and routing details .

Mode-S A3F120 frequently asked

What is Mode-S code A3F120?
A3F120 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N353NB.
Where is Mode-S A3F120 registered?
Mode-S code A3F120 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 A3F120 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3F120, octal 50770440, decimal 10,744,096.
What flights does A3F120 operate?
Mode-S A3F120 has broadcast 20 distinct callsigns, including DAL1075, DAL2351, DAL2283, DAL1275, DAL2305.