Apparatus

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sensors Mode-S transponder

A3A5D9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N334NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3A5D9
Octal
50722731
Decimal
10,724,825
Country
US
Tail
N334NB
Type
A319
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
535
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A3A5D9.

Country allocation

The ICAO 24-bit address A3A5D9 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
DAL1003 - 14 2026-07-06
DAL487 Delta Air Lines 13 2026-07-07
DAL381 Delta Air Lines 9 2026-06-14
DAL3043 Delta Air Lines 9 2026-06-03
DAL1077 - 9 2026-07-08
DAL946 Delta Air Lines 8 2026-07-24
DAL2766 - 8 2026-07-14
DAL1216 - 8 2026-07-13
DAL1040 - 8 2026-07-16
DAL2455 Delta Air Lines 7 2026-04-20
DAL1218 Delta Air Lines 7 2026-07-22
DAL2762 Delta Air Lines 6 2026-04-18
DAL2568 - 6 2026-07-11
DAL2476 Delta Air Lines 6 2026-05-08
DAL2459 - 6 2026-07-15
DAL2163 - 6 2026-07-16
DAL2073 - 6 2026-07-04
DAL1224 - 6 2026-07-05
DAL646 - 5 2026-06-26
DAL645 - 5 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL417 ATL → LGA Jul 26, 22:05 UTCJul 26, 22:15 UTC10m
2026-07-26 DAL2282 ATL → DAY Jul 26, 19:45 UTCJul 26, 20:15 UTC30m
2026-07-26 DAL2282 ATL → DAY Jul 26, 17:30 UTCJul 26, 17:50 UTC20m
2026-07-26 DAL2618 MSP → DCA Jul 26, 14:00 UTCJul 26, 15:50 UTC1h 50m
2026-07-26 DAL2618 MSP → DCA Jul 26, 13:30 UTCJul 26, 13:55 UTC25m
2026-07-25 DAL1967 LAX → SAL Jul 25, 21:15 UTCJul 25, 22:55 UTC1h 40m
2026-07-25 DAL1967 LAX → SAL Jul 25, 21:12 UTCJul 25, 22:52 UTC1h 40m
2026-07-25 DAL1967 LAX → SAL Jul 25, 17:55 UTCJul 25, 19:30 UTC1h 35m
2026-07-24 DAL622 JFK → SLC Jul 24, 23:15 UTCJul 25, 01:55 UTC2h 40m
2026-07-24 DAL946 PHX → DTW Jul 24, 18:50 UTCJul 24, 21:20 UTC2h 30m
2026-07-24 DAL946 PHX → DTW Jul 24, 18:47 UTCJul 24, 21:20 UTC2h 33m
2026-07-24 DAL946 PHX → DTW Jul 24, 14:45 UTCJul 24, 17:25 UTC2h 40m
2026-07-24 DAL1584 AUS → ATL Jul 24, 01:50 UTCJul 24, 04:25 UTC2h 35m
2026-07-23 DAL1612 JFK → PBI Jul 23, 21:00 UTCJul 23, 23:25 UTC2h 25m
2026-07-23 DAL1043 SFO → ATL Jul 23, 17:05 UTCJul 23, 19:25 UTC2h 20m
2026-07-23 DAL1043 SFO → ATL Jul 23, 13:05 UTCJul 23, 15:40 UTC2h 35m
2026-07-23 DAL2898 BIL → MSP Jul 23, 10:40 UTCJul 23, 11:30 UTC50m
2026-07-23 DAL978 LAX → DTW Jul 23, 04:40 UTCJul 23, 05:30 UTC50m
2026-07-23 DAL2030 IND → MSP Jul 23, 00:45 UTCJul 23, 02:00 UTC1h 15m
2026-07-22 DAL2030 IND → MSP Jul 22, 21:55 UTCJul 22, 23:00 UTC1h 5m
2026-07-22 DAL1218 AUS → DTW Jul 22, 17:15 UTCJul 22, 19:45 UTC2h 30m
2026-07-22 DAL1218 AUS → DTW Jul 22, 13:30 UTCJul 22, 16:00 UTC2h 30m
2026-07-22 DAL2292 SYR → ATL Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 DAL2424 DTW → MSN Jul 22, 03:20 UTCJul 22, 03:45 UTC25m
2026-07-20 DAL1557 MSP → IAH Jul 20, 19:25 UTCJul 20, 20:40 UTC1h 15m
2026-07-20 DAL1557 MSP → IAH Jul 20, 19:20 UTCJul 20, 20:32 UTC1h 12m
2026-07-20 DAL1557 MSP → IAH Jul 20, 16:40 UTCJul 20, 17:45 UTC1h 5m
2026-07-20 DAL2183 DFW → DTW Jul 20, 11:50 UTCJul 20, 14:05 UTC2h 15m
2026-07-20 DAL420 LAX → BOS Jul 20, 02:10 UTCJul 20, 04:55 UTC2h 45m
2026-07-19 DAL2588 - Jul 19, 22:15 UTCJul 20, 01:00 UTC2h 45m
2026-07-19 DAL2458 - Jul 19, 17:50 UTCJul 19, 20:20 UTC2h 30m
2026-07-19 DAL2682 BNA → DTW Jul 19, 15:25 UTCJul 19, 16:30 UTC1h 5m
2026-07-19 DAL2682 BNA → DTW Jul 19, 12:40 UTCJul 19, 13:50 UTC1h 10m
2026-07-19 DAL1752 ROC → DTW Jul 19, 10:20 UTCJul 19, 11:10 UTC50m
2026-07-19 DAL3148 - Jul 19, 01:45 UTCJul 19, 02:35 UTC50m
2026-07-19 DAL3148 DTW → ROC Jul 19, 01:43 UTCJul 19, 02:31 UTC48m
2026-07-18 DAL1343 - Jul 18, 22:15 UTCJul 18, 23:10 UTC55m
2026-07-18 DAL1343 - Jul 18, 20:15 UTCJul 18, 21:10 UTC55m
2026-07-18 DAL2790 BOS → CVG Jul 18, 16:45 UTCJul 18, 18:45 UTC2h 0m
2026-07-18 DAL2790 BOS → CVG Jul 18, 13:30 UTCJul 18, 15:25 UTC1h 55m
2026-07-18 DAL2898 BUF → DTW Jul 18, 10:45 UTCJul 18, 11:30 UTC45m
2026-07-18 DAL978 - Jul 18, 03:45 UTCJul 18, 04:25 UTC40m
2026-07-18 DAL2030 DCA → DTW Jul 18, 01:15 UTCJul 18, 02:25 UTC1h 10m
2026-07-17 DAL2030 - Jul 17, 23:14 UTCJul 18, 00:15 UTC1h 0m
2026-07-17 DAL1218 AUS → DTW Jul 17, 17:25 UTCJul 17, 19:55 UTC2h 30m
2026-07-17 DAL1218 AUS → DTW Jul 17, 13:29 UTCJul 17, 16:00 UTC2h 30m
2026-07-17 DAL2292 SYR → ATL Jul 17, 11:00 UTCJul 17, 11:35 UTC35m
2026-07-17 DAL2424 - Jul 17, 03:34 UTCJul 17, 04:04 UTC30m
2026-07-17 DAL2424 DTW → TVC Jul 17, 03:34 UTCJul 17, 04:13 UTC39m
2026-07-17 DAL1253 JFK → DTW Jul 17, 00:01 UTCJul 17, 01:27 UTC1h 26m

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 N334NB page for operator, model, and routing details .

Mode-S A3A5D9 frequently asked

What is Mode-S code A3A5D9?
A3A5D9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N334NB.
Where is Mode-S A3A5D9 registered?
Mode-S code A3A5D9 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 A3A5D9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A5D9, octal 50722731, decimal 10,724,825.
What flights does A3A5D9 operate?
Mode-S A3A5D9 has broadcast 20 distinct callsigns, including DAL1003, DAL487, DAL381, DAL3043, DAL1077.