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 23h ago
Flights observed
436
Distinct callsigns
20
Country
US
Last broadcast
23h ago

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
DAL2766 - 9 2026-06-24
DAL1438 - 9 2026-06-29
DAL1116 - 9 2026-07-12
DAL1049 - 9 2026-07-09
DAL417 - 8 2026-07-12
DAL946 Delta Air Lines 7 2026-06-28
DAL3135 - 7 2026-07-12
DAL2816 Delta Air Lines 7 2026-04-24
DAL2677 Delta Air Lines 7 2026-04-25
DAL950 - 6 2026-06-19
DAL381 Delta Air Lines 6 2026-05-12
DAL920 - 5 2026-07-08
DAL3124 - 5 2026-07-12
DAL2855 - 5 2026-07-12
DAL2785 Delta Air Lines 5 2026-04-27
DAL2682 Delta Air Lines 5 2026-05-31
DAL2282 - 5 2026-07-10
DAL2030 Delta Air Lines 5 2026-05-15
DAL1444 Delta Air Lines 5 2026-06-10
DAL1064 - 5 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL2207 - Jul 13, 11:35 UTCJul 13, 15:05 UTC3h 30m
2026-07-12 DAL2855 SLC → CLE Jul 12, 23:40 UTCJul 13, 02:50 UTC3h 10m
2026-07-12 DAL1116 - Jul 12, 20:05 UTCJul 12, 21:30 UTC1h 25m
2026-07-12 DAL1116 - Jul 12, 17:20 UTCJul 12, 18:50 UTC1h 30m
2026-07-12 DAL3135 - Jul 12, 14:15 UTCJul 12, 15:40 UTC1h 25m
2026-07-12 DAL3124 SLC → LGB Jul 12, 03:25 UTCJul 12, 04:50 UTC1h 25m
2026-07-12 DAL417 - Jul 12, 01:35 UTCJul 12, 02:10 UTC35m
2026-07-11 DAL417 - Jul 11, 23:50 UTCJul 12, 00:10 UTC20m
2026-07-11 DAL1116 LGB → SLC Jul 11, 20:15 UTCJul 11, 21:35 UTC1h 20m
2026-07-11 DAL1116 LGB → SLC Jul 11, 20:12 UTCJul 11, 21:32 UTC1h 20m
2026-07-11 DAL1116 SLC → LGB Jul 11, 17:15 UTCJul 11, 18:40 UTC1h 25m
2026-07-11 DAL3135 LGB → SLC Jul 11, 14:25 UTCJul 11, 15:50 UTC1h 25m
2026-07-11 DAL3124 SLC → LGB Jul 11, 03:05 UTCJul 11, 04:30 UTC1h 25m
2026-07-11 DAL417 - Jul 11, 00:20 UTCJul 11, 00:30 UTC10m
2026-07-11 DAL417 JAC → SLC Jul 11, 00:04 UTCJul 11, 00:46 UTC42m
2026-07-10 DAL417 - Jul 10, 22:20 UTCJul 10, 22:40 UTC20m
2026-07-10 DAL2282 - Jul 10, 19:25 UTCJul 10, 20:00 UTC35m
2026-07-10 DAL2282 - Jul 10, 17:30 UTCJul 10, 17:55 UTC25m
2026-07-10 DAL2618 AUS → SLC Jul 10, 13:25 UTCJul 10, 15:55 UTC2h 30m
2026-07-09 DAL2728 SLC → AUS Jul 9, 23:50 UTCJul 10, 02:10 UTC2h 20m
2026-07-09 DAL1064 YVR → SLC Jul 9, 20:55 UTCJul 9, 22:40 UTC1h 45m
2026-07-09 DAL1064 YVR → SLC Jul 9, 20:55 UTCJul 9, 22:53 UTC1h 58m
2026-07-09 DAL1049 SLC → YVR Jul 9, 18:00 UTCJul 9, 19:50 UTC1h 50m
2026-07-09 DAL3135 LGB → SLC Jul 9, 14:05 UTCJul 9, 15:30 UTC1h 25m
2026-07-09 DAL3135 LGB → SLC Jul 9, 14:04 UTCJul 9, 15:27 UTC1h 23m
2026-07-09 DAL3124 SLC → LGB Jul 9, 03:00 UTCJul 9, 04:30 UTC1h 30m
2026-07-08 DAL2812 DFW → SLC Jul 8, 23:30 UTCJul 9, 01:45 UTC2h 15m
2026-07-08 DAL2811 SLC → DFW Jul 8, 20:00 UTCJul 8, 22:10 UTC2h 10m
2026-07-08 DAL920 SFO → SLC Jul 8, 17:30 UTCJul 8, 18:50 UTC1h 20m
2026-07-08 DAL920 SLC → SFO Jul 8, 14:35 UTCJul 8, 16:20 UTC1h 45m
2026-07-08 DAL2581 AUS → SLC Jul 8, 00:35 UTCJul 8, 02:55 UTC2h 20m
2026-07-07 DAL2581 SLC → AUS Jul 7, 20:15 UTCJul 7, 22:30 UTC2h 15m
2026-07-07 DAL920 - Jul 7, 17:35 UTCJul 7, 18:55 UTC1h 20m
2026-07-07 DAL920 SFO → SLC Jul 7, 17:33 UTCJul 7, 18:51 UTC1h 18m
2026-07-07 DAL920 SLC → SFO Jul 7, 14:45 UTCJul 7, 16:25 UTC1h 40m
2026-07-07 DAL1238 - Jul 7, 02:30 UTCJul 7, 04:00 UTC1h 30m
2026-07-06 DAL1238 - Jul 6, 23:40 UTCJul 7, 01:10 UTC1h 30m
2026-07-06 DAL1064 - Jul 6, 20:35 UTCJul 6, 22:25 UTC1h 50m
2026-07-06 DAL1049 SLC → YVR Jul 6, 17:00 UTCJul 6, 18:45 UTC1h 45m
2026-07-06 DAL1049 SLC → YVR Jul 6, 16:58 UTCJul 6, 18:44 UTC1h 46m
2026-07-06 DAL2207 CLE → SLC Jul 6, 11:40 UTCJul 6, 15:05 UTC3h 25m
2026-07-05 DAL2855 SLC → CLE Jul 5, 23:35 UTCJul 6, 02:50 UTC3h 15m
2026-07-05 DAL1116 LGB → SLC Jul 5, 20:10 UTCJul 5, 21:40 UTC1h 30m
2026-07-05 DAL1116 SLC → LGB Jul 5, 17:15 UTCJul 5, 18:50 UTC1h 35m
2026-07-05 DAL3135 BTR → ATL Jul 5, 14:20 UTCJul 5, 15:45 UTC1h 25m
2026-07-05 DAL3135 BTR → ATL Jul 5, 14:17 UTCJul 5, 15:43 UTC1h 26m
2026-07-05 DAL3124 DTW → MEM Jul 5, 02:30 UTCJul 5, 04:00 UTC1h 30m
2026-07-04 DAL1064 YVR → SLC Jul 4, 20:35 UTCJul 4, 22:20 UTC1h 45m
2026-07-04 DAL1049 SLC → YVR Jul 4, 17:05 UTCJul 4, 19:00 UTC1h 55m
2026-07-04 DAL2207 CLE → SLC Jul 4, 11:30 UTCJul 4, 15:20 UTC3h 50m

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 23h ago.
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 DAL2766, DAL1438, DAL1116, DAL1049, DAL417.