Apparatus

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sensors Mode-S transponder

A39017

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N329DN · AIRBUS A-321 · operated by UMB BANK NA TRUSTEE

Hex
A39017
Octal
50710027
Decimal
10,719,255
Country
US
Tail
N329DN
Type
A321
No current signal · last broadcast 1h ago
Flights observed
527
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A39017.

Country allocation

The ICAO 24-bit address A39017 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
DAL1458 - 12 2026-07-13
DAL959 - 9 2026-07-09
DAL665 Delta Air Lines 8 2026-05-29
DAL1386 - 8 2026-06-24
DAL759 Delta Air Lines 7 2026-06-02
DAL961 - 6 2026-07-01
DAL1946 - 6 2026-06-23
DAL1384 - 6 2026-07-12
DAL1352 - 6 2026-07-10
DAL1271 - 6 2026-06-29
DAL2886 - 5 2026-07-09
DAL2432 Delta Air Lines 5 2026-06-08
DAL2011 - 5 2026-06-26
DAL1709 Delta Air Lines 5 2026-06-04
DAL1587 Delta Air Lines 5 2026-05-08
DAL1527 Delta Air Lines 5 2026-05-27
DAL1329 - 5 2026-07-02
DAL1269 Delta Air Lines 5 2026-06-08
DAL1153 Delta Air Lines 5 2026-06-17
DAL921 - 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL1502 MSP → BOS Jul 13, 23:25 UTCJul 14, 01:45 UTC2h 20m
2026-07-13 DAL1127 BOS → MSP Jul 13, 19:36 UTCJul 13, 22:00 UTC2h 24m
2026-07-13 DAL1127 BOS → MSP Jul 13, 19:40 UTCJul 13, 22:05 UTC2h 25m
2026-07-13 DAL862 ATL → BNH Jul 13, 15:35 UTCJul 13, 17:45 UTC2h 10m
2026-07-13 DAL1180 PHL → ATL Jul 13, 12:30 UTCJul 13, 14:05 UTC1h 35m
2026-07-13 DAL2642 ATL → PHL Jul 13, 04:10 UTCJul 13, 05:40 UTC1h 30m
2026-07-13 DAL2642 ATL → PHL Jul 13, 04:10 UTCJul 13, 05:34 UTC1h 24m
2026-07-13 DAL1458 - Jul 13, 00:55 UTCJul 13, 02:20 UTC1h 25m
2026-07-12 DAL1458 - Jul 12, 20:15 UTCJul 12, 21:45 UTC1h 30m
2026-07-12 DAL1384 BUF → ATL Jul 12, 16:25 UTCJul 12, 18:05 UTC1h 40m
2026-07-12 DAL1384 ATL → BUF Jul 12, 13:25 UTCJul 12, 14:55 UTC1h 30m
2026-07-12 DAL1494 MCO → ATL Jul 12, 10:30 UTCJul 12, 11:30 UTC1h 0m
2026-07-12 DAL1735 ATL → MCO Jul 12, 03:20 UTCJul 12, 04:20 UTC1h 0m
2026-07-11 DAL2063 - Jul 11, 18:55 UTCJul 11, 21:15 UTC2h 20m
2026-07-11 DAL2063 ATL → FLL Jul 11, 16:05 UTCJul 11, 17:25 UTC1h 20m
2026-07-11 DAL1592 - Jul 11, 13:15 UTCJul 11, 14:35 UTC1h 20m
2026-07-11 DAL2590 ATL → BWI Jul 11, 05:01 UTCJul 11, 06:25 UTC1h 25m
2026-07-11 DAL1742 MCO → ATL Jul 11, 02:05 UTCJul 11, 03:10 UTC1h 5m
2026-07-10 DAL1742 ATL → MCO Jul 10, 20:20 UTCJul 10, 21:30 UTC1h 11m
2026-07-10 DAL2650 - Jul 10, 17:20 UTCJul 10, 18:30 UTC1h 10m
2026-07-10 DAL2650 - Jul 10, 14:30 UTCJul 10, 15:40 UTC1h 10m
2026-07-10 DAL1352 - Jul 10, 11:15 UTCJul 10, 12:30 UTC1h 15m
2026-07-10 DAL1352 - Jul 10, 11:10 UTCJul 10, 12:25 UTC1h 15m
2026-07-09 DAL959 - Jul 9, 23:25 UTCJul 10, 00:50 UTC1h 25m
2026-07-09 DAL2886 AUS → ATL Jul 9, 19:20 UTCJul 9, 21:10 UTC1h 50m
2026-07-09 DAL2886 AUS → ATL Jul 9, 19:17 UTCJul 9, 21:06 UTC1h 49m
2026-07-09 DAL2886 ATL → AUS Jul 9, 13:55 UTCJul 9, 15:50 UTC1h 55m
2026-07-09 DAL2429 - Jul 9, 10:10 UTCJul 9, 12:15 UTC2h 5m
2026-07-09 DAL2584 ATL → ALB Jul 9, 01:50 UTCJul 9, 03:45 UTC1h 55m
2026-07-08 DAL1458 - Jul 8, 22:40 UTCJul 9, 00:00 UTC1h 20m
2026-07-08 DAL1458 - Jul 8, 19:55 UTCJul 8, 21:20 UTC1h 25m
2026-07-08 DAL1384 BDL → ATL Jul 8, 16:30 UTCJul 8, 18:10 UTC1h 40m
2026-07-08 DAL1384 BDL → ATL Jul 8, 13:25 UTCJul 8, 15:05 UTC1h 40m
2026-07-08 DAL1249 - Jul 8, 10:35 UTCJul 8, 11:55 UTC1h 20m
2026-07-08 DAL1589 - Jul 8, 03:20 UTCJul 8, 04:50 UTC1h 30m
2026-07-08 DAL1589 ATL → MIA Jul 8, 03:20 UTCJul 8, 04:49 UTC1h 29m
2026-07-07 DAL488 - Jul 7, 23:25 UTCJul 8, 01:40 UTC2h 15m
2026-07-07 DAL488 - Jul 7, 19:55 UTCJul 7, 21:55 UTC2h 0m
2026-07-07 DAL664 MCO → ATL Jul 7, 17:15 UTCJul 7, 18:15 UTC1h 0m
2026-07-07 DAL664 ATL → MCO Jul 7, 14:35 UTCJul 7, 15:35 UTC1h 0m
2026-07-07 DAL1673 EWR → ATL Jul 7, 11:35 UTCJul 7, 13:15 UTC1h 40m
2026-07-06 DAL2498 ATL → EWR Jul 6, 23:20 UTCJul 7, 01:00 UTC1h 40m
2026-07-06 DAL414 LGA → ATL Jul 6, 19:05 UTCJul 6, 20:45 UTC1h 40m
2026-07-06 DAL414 LGA → ATL Jul 6, 15:55 UTCJul 6, 17:45 UTC1h 50m
2026-07-06 DAL893 DFW → ATL Jul 6, 12:10 UTCJul 6, 13:50 UTC1h 40m
2026-07-06 DAL436 ATL → DFW Jul 6, 00:45 UTCJul 6, 02:30 UTC1h 45m
2026-07-05 DAL2312 - Jul 5, 20:25 UTCJul 5, 21:45 UTC1h 20m
2026-07-05 DAL2312 EWR → ATL Jul 5, 20:22 UTCJul 5, 22:04 UTC1h 42m
2026-07-05 DAL2312 ATL → EWR Jul 5, 16:50 UTCJul 5, 18:45 UTC1h 55m
2026-07-05 DAL2899 RDU → BOS Jul 5, 13:25 UTCJul 5, 15:15 UTC1h 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 N329DN page for operator, model, and routing details .

Mode-S A39017 frequently asked

What is Mode-S code A39017?
A39017 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N329DN.
Where is Mode-S A39017 registered?
Mode-S code A39017 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 A39017 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A39017, octal 50710027, decimal 10,719,255.
What flights does A39017 operate?
Mode-S A39017 has broadcast 20 distinct callsigns, including DAL1458, DAL959, DAL665, DAL1386, DAL759.