Apparatus

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sensors Mode-S transponder

A3B4B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N338NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3B4B5
Octal
50732265
Decimal
10,728,629
Country
US
Tail
N338NB
Type
A319
Broadcasting now · callsign DAL1444 · 33,000 ft
Flights observed
412
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:40 UTC

Current position

A3B4B5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3B4B5 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
DAL1438 Delta Air Lines 9 2026-05-22
DAL946 Delta Air Lines 8 2026-05-22
DAL2168 Delta Air Lines 8 2026-06-10
DAL1472 Delta Air Lines 8 2026-06-05
DAL1281 Delta Air Lines 7 2026-06-10
DAL1143 Delta Air Lines 7 2026-05-19
DAL628 Delta Air Lines 6 2026-07-26
DAL2815 Delta Air Lines 6 2026-06-05
DAL1517 Delta Air Lines 6 2026-04-17
DAL487 Delta Air Lines 5 2026-05-14
DAL381 Delta Air Lines 5 2026-04-16
DAL3047 Delta Air Lines 5 2026-06-12
DAL2534 Delta Air Lines 5 2026-05-03
DAL2459 Delta Air Lines 5 2026-05-25
DAL2316 Delta Air Lines 5 2026-05-06
DAL1558 Delta Air Lines 5 2026-05-11
DAL1072 Delta Air Lines 5 2026-06-06
DAL2970 Delta Air Lines 4 2026-04-22
DAL2682 Delta Air Lines 4 2026-05-26
DAL2598 - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL628 SLC → MEX Jul 26, 19:25 UTCJul 26, 19:40 UTC15m
2026-07-26 DAL628 SLC → MEX Jul 26, 16:15 UTCJul 26, 18:45 UTC2h 30m
2026-07-26 DAL1645 LAX → PDX Jul 26, 13:20 UTCJul 26, 14:30 UTC1h 10m
2026-07-26 DAL1712 SLC → ORD Jul 26, 03:40 UTCJul 26, 04:50 UTC1h 10m
2026-07-24 DAL2592 BOS → LGA Jul 24, 11:40 UTCJul 24, 14:05 UTC2h 25m
2026-07-24 DAL2797 DTW → BUF Jul 24, 02:50 UTCJul 24, 05:05 UTC2h 15m
2026-07-23 DAL642 MEX → SLC Jul 23, 21:30 UTCJul 24, 00:50 UTC3h 20m
2026-07-23 DAL628 SLC → MEX Jul 23, 16:35 UTCJul 23, 17:15 UTC40m
2026-07-23 DAL628 SLC → MEX Jul 23, 16:30 UTCJul 23, 19:58 UTC3h 28m
2026-07-22 DAL2592 BOS → LGA Jul 22, 11:55 UTCJul 22, 14:10 UTC2h 15m
2026-07-22 DAL1365 PHL → DTW Jul 22, 00:30 UTCJul 22, 03:20 UTC2h 50m
2026-07-21 DAL2265 - Jul 21, 19:10 UTCJul 21, 21:25 UTC2h 15m
2026-07-21 DAL2118 BOS → RDU Jul 21, 16:15 UTCJul 21, 17:55 UTC1h 40m
2026-07-21 DAL1054 - Jul 21, 11:15 UTCJul 21, 12:45 UTC1h 30m
2026-07-21 DAL1275 TPA → RDU Jul 21, 02:05 UTCJul 21, 03:35 UTC1h 30m
2026-07-13 - TPA → TPA Jul 13, 20:40 UTCJul 13, 20:50 UTC10m
2026-06-25 DAL1275 - Jun 25, 22:14 UTCJun 25, 23:39 UTC1h 25m
2026-06-25 DAL1018 - Jun 25, 19:24 UTCJun 25, 20:59 UTC1h 35m
2026-06-25 DAL1038 RDU → FLL Jun 25, 16:05 UTCJun 25, 17:44 UTC1h 40m
2026-06-25 DAL1279 TPA → RDU Jun 25, 13:20 UTCJun 25, 14:50 UTC1h 30m
2026-06-25 DAL1279 - Jun 25, 10:30 UTCJun 25, 11:54 UTC1h 25m
2026-06-25 DAL1275 - Jun 25, 00:59 UTCJun 25, 02:30 UTC1h 30m
2026-06-24 DAL1275 - Jun 24, 22:14 UTCJun 24, 23:40 UTC1h 25m
2026-06-24 DAL1018 - Jun 24, 19:29 UTCJun 24, 21:09 UTC1h 40m
2026-06-24 DAL1038 - Jun 24, 16:19 UTCJun 24, 18:09 UTC1h 50m
2026-06-24 DAL1279 TPA → RDU Jun 24, 13:34 UTCJun 24, 14:55 UTC1h 20m
2026-06-24 DAL1279 - Jun 24, 10:35 UTCJun 24, 11:59 UTC1h 25m
2026-06-23 DAL2992 - Jun 23, 22:55 UTCJun 24, 00:44 UTC1h 50m
2026-06-23 DAL2576 TPA → BOS Jun 23, 19:29 UTCJun 23, 21:49 UTC2h 20m
2026-06-23 DAL2983 MSP → DCA Jun 23, 15:34 UTCJun 23, 17:34 UTC2h 0m
2026-06-23 DAL1006 FSD → MSP Jun 23, 13:29 UTCJun 23, 14:04 UTC35m
2026-06-23 DAL1694 MSP → FSD Jun 23, 03:21 UTCJun 23, 03:55 UTC34m
2026-06-23 DAL1694 MSP → FSD Jun 23, 03:25 UTCJun 23, 04:00 UTC35m
2026-06-22 DAL1224 - Jun 22, 19:00 UTCJun 22, 21:40 UTC2h 40m
2026-06-22 DAL1224 MSP → PVD Jun 22, 15:24 UTCJun 22, 17:55 UTC2h 30m
2026-06-22 DAL2834 - Jun 22, 12:00 UTCJun 22, 14:10 UTC2h 10m
2026-06-22 DAL1689 - Jun 22, 01:44 UTCJun 22, 02:34 UTC50m
2026-06-21 DAL2598 - Jun 21, 21:29 UTCJun 21, 23:14 UTC1h 45m
2026-06-21 DAL2598 SAT → DTW Jun 21, 21:24 UTCJun 22, 00:03 UTC2h 39m
2026-06-21 DAL2568 - Jun 21, 17:29 UTCJun 21, 19:55 UTC2h 25m
2026-06-21 DAL2002 DEN → LAX Jun 21, 13:50 UTCJun 21, 15:59 UTC2h 10m
2026-06-21 DAL1729 - Jun 21, 01:49 UTCJun 21, 03:40 UTC1h 50m
2026-06-20 DAL681 DFW → LAX Jun 20, 21:44 UTCJun 21, 00:34 UTC2h 50m
2026-06-20 DAL521 - Jun 20, 17:34 UTCJun 20, 20:09 UTC2h 35m
2026-06-20 DAL1216 - Jun 20, 13:09 UTCJun 20, 16:05 UTC2h 55m
2026-06-20 DAL1633 - Jun 20, 00:44 UTCJun 20, 03:09 UTC2h 25m
2026-06-19 DAL645 - Jun 19, 18:59 UTCJun 19, 22:55 UTC3h 55m
2026-06-19 DAL646 - Jun 19, 13:09 UTCJun 19, 17:09 UTC4h 0m
2026-06-19 DAL646 DTW → MEX Jun 19, 13:08 UTCJun 19, 17:07 UTC3h 59m
2026-06-19 DAL2292 - Jun 19, 10:50 UTCJun 19, 11:24 UTC35m

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 N338NB page for operator, model, and routing details .

Mode-S A3B4B5 frequently asked

What is Mode-S code A3B4B5?
A3B4B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N338NB.
Where is Mode-S A3B4B5 registered?
Mode-S code A3B4B5 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 A3B4B5 broadcasting right now?
Yes. Mode-S A3B4B5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3B4B5, octal 50732265, decimal 10,728,629.
What flights does A3B4B5 operate?
Mode-S A3B4B5 has broadcast 20 distinct callsigns, including DAL1438, DAL946, DAL2168, DAL1472, DAL1281.