Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3E9B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N351NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3E9B2
Octal
50764662
Decimal
10,742,194
Country
US
Tail
N351NB
Type
A319
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
503
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A3E9B2.

Country allocation

The ICAO 24-bit address A3E9B2 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
DAL1116 - 12 2026-07-16
DAL417 - 10 2026-07-15
DAL2816 Delta Air Lines 9 2026-07-23
DAL2766 - 9 2026-06-24
DAL1438 - 9 2026-06-29
DAL1049 - 9 2026-07-09
DAL381 - 8 2026-07-17
DAL946 Delta Air Lines 7 2026-06-28
DAL3135 - 7 2026-07-12
DAL2677 Delta Air Lines 7 2026-04-25
DAL2030 Delta Air Lines 7 2026-07-25
DAL1003 - 7 2026-07-18
DAL950 - 6 2026-06-19
DAL628 - 6 2026-07-15
DAL2646 Delta Air Lines 6 2026-07-23
DAL2282 - 6 2026-07-14
DAL1218 Delta Air Lines 6 2026-07-25
DAL920 - 5 2026-07-08
DAL3124 - 5 2026-07-12
DAL2888 Delta Air Lines 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1612 JFK → PBI Jul 26, 20:50 UTCJul 26, 22:30 UTC1h 40m
2026-07-26 DAL1043 SFO → ATL Jul 26, 17:10 UTCJul 26, 19:35 UTC2h 25m
2026-07-26 DAL1043 SFO → ATL Jul 26, 13:20 UTCJul 26, 15:40 UTC2h 20m
2026-07-26 DAL2898 BIL → MSP Jul 26, 10:55 UTCJul 26, 11:35 UTC40m
2026-07-26 DAL2898 BIL → MSP Jul 26, 10:53 UTCJul 26, 11:34 UTC41m
2026-07-26 DAL978 LAX → DTW Jul 26, 02:10 UTCJul 26, 02:50 UTC40m
2026-07-25 DAL2030 IND → MSP Jul 25, 23:50 UTCJul 26, 00:55 UTC1h 5m
2026-07-25 DAL2030 IND → MSP Jul 25, 21:30 UTCJul 25, 22:30 UTC1h 0m
2026-07-25 DAL1218 AUS → DTW Jul 25, 17:28 UTCJul 25, 19:59 UTC2h 31m
2026-07-25 DAL1218 AUS → DTW Jul 25, 17:30 UTCJul 25, 20:05 UTC2h 35m
2026-07-25 DAL1218 AUS → DTW Jul 25, 13:20 UTCJul 25, 15:50 UTC2h 30m
2026-07-25 DAL2091 ATL → DAB Jul 25, 10:30 UTCJul 25, 11:30 UTC1h 0m
2026-07-25 DAL2097 MSP → LAS Jul 25, 01:15 UTCJul 25, 02:55 UTC1h 40m
2026-07-24 DAL2863 SMF → SLC Jul 24, 19:15 UTCJul 24, 21:30 UTC2h 15m
2026-07-24 DAL2888 SFO → SEA Jul 24, 15:40 UTCJul 24, 17:50 UTC2h 10m
2026-07-24 DAL2888 SFO → SEA Jul 24, 15:39 UTCJul 24, 17:42 UTC2h 3m
2026-07-24 DAL890 CLT → MSP Jul 24, 12:30 UTCJul 24, 14:05 UTC1h 35m
2026-07-24 DAL817 DEN → ATL Jul 24, 00:15 UTCJul 24, 01:55 UTC1h 40m
2026-07-23 DAL2816 ATL → BNA Jul 23, 20:50 UTCJul 23, 22:45 UTC1h 55m
2026-07-23 DAL2816 ATL → BNA Jul 23, 16:35 UTCJul 23, 18:45 UTC2h 10m
2026-07-23 DAL1022 ATL → DTW Jul 23, 13:35 UTCJul 23, 15:00 UTC1h 25m
2026-07-23 DAL2066 BOS → RDU Jul 23, 10:35 UTCJul 23, 12:10 UTC1h 35m
2026-07-23 DAL2066 BOS → RDU Jul 23, 10:33 UTCJul 23, 12:09 UTC1h 36m
2026-07-23 DAL2646 PVD → ATL Jul 23, 00:50 UTCJul 23, 02:30 UTC1h 40m
2026-07-22 DAL2646 PVD → ATL Jul 22, 21:00 UTCJul 22, 23:25 UTC2h 25m
2026-07-22 DAL1033 FLL → LGA Jul 22, 17:05 UTCJul 22, 18:25 UTC1h 20m
2026-07-22 DAL2118 BOS → RDU Jul 22, 14:10 UTCJul 22, 15:50 UTC1h 40m
2026-07-22 DAL1054 - Jul 22, 11:35 UTCJul 22, 12:40 UTC1h 5m
2026-07-22 DAL1275 TPA → RDU Jul 22, 01:00 UTCJul 22, 02:30 UTC1h 30m
2026-07-21 DAL1275 TPA → RDU Jul 21, 22:40 UTCJul 21, 23:55 UTC1h 15m
2026-07-21 DAL1018 MSY → ATL Jul 21, 19:45 UTCJul 21, 21:25 UTC1h 40m
2026-07-21 DAL1018 MSY → ATL Jul 21, 19:42 UTCJul 21, 21:21 UTC1h 39m
2026-07-21 DAL1038 - Jul 21, 16:05 UTCJul 21, 17:45 UTC1h 40m
2026-07-21 DAL1279 BOS → PBI Jul 21, 13:15 UTCJul 21, 14:45 UTC1h 30m
2026-07-21 DAL1279 BOS → PBI Jul 21, 10:40 UTCJul 21, 12:00 UTC1h 20m
2026-07-21 DAL2992 - Jul 21, 00:20 UTCJul 21, 02:40 UTC2h 20m
2026-07-21 DAL2992 MIA → RDU Jul 21, 00:17 UTCJul 21, 02:33 UTC2h 16m
2026-07-20 DAL2576 TPA → BOS Jul 20, 20:30 UTCJul 20, 22:45 UTC2h 15m
2026-07-20 DAL2983 MSP → DCA Jul 20, 16:27 UTCJul 20, 18:15 UTC1h 48m
2026-07-20 DAL1006 SLC → LAX Jul 20, 14:35 UTCJul 20, 15:10 UTC35m
2026-07-20 DAL1694 SLC → AUS Jul 20, 03:55 UTCJul 20, 04:25 UTC30m
2026-07-20 DAL2820 - Jul 20, 00:30 UTCJul 20, 02:50 UTC2h 20m
2026-07-19 DAL3158 RIC → ATL Jul 19, 22:05 UTCJul 19, 22:45 UTC40m
2026-07-19 DAL1472 - Jul 19, 19:10 UTCJul 19, 20:40 UTC1h 30m
2026-07-19 DAL1472 - Jul 19, 15:45 UTCJul 19, 17:05 UTC1h 20m
2026-07-19 DAL1072 JFK → DEN Jul 19, 12:05 UTCJul 19, 13:35 UTC1h 30m
2026-07-18 DAL2815 - Jul 18, 22:10 UTCJul 18, 23:35 UTC1h 25m
2026-07-18 DAL548 DCA → ATL Jul 18, 18:27 UTCJul 18, 19:45 UTC1h 18m
2026-07-18 DAL548 DCA → ATL Jul 18, 18:30 UTCJul 18, 19:50 UTC1h 20m
2026-07-18 DAL1003 MCO → DCA Jul 18, 14:25 UTCJul 18, 16:10 UTC1h 45m

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 N351NB page for operator, model, and routing details .

Mode-S A3E9B2 frequently asked

What is Mode-S code A3E9B2?
A3E9B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N351NB.
Where is Mode-S A3E9B2 registered?
Mode-S code A3E9B2 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 A3E9B2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3E9B2, octal 50764662, decimal 10,742,194.
What flights does A3E9B2 operate?
Mode-S A3E9B2 has broadcast 20 distinct callsigns, including DAL1116, DAL417, DAL2816, DAL2766, DAL1438.