Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A017A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N105DX · AIRBUS A-321 · operated by UMB BANK NA TRUSTEE

Hex
A017A8
Octal
50013650
Decimal
10,491,816
Country
US
Tail
N105DX
Type
A321
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
356
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A017A8.

Country allocation

The ICAO 24-bit address A017A8 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
DAL1882 Delta Air Lines 9 2026-07-24
DAL1491 Delta Air Lines 8 2026-04-18
DAL581 - 6 2026-07-19
DAL2469 Delta Air Lines 6 2026-04-18
DAL990 Delta Air Lines 5 2026-05-31
DAL916 Delta Air Lines 5 2026-05-03
DAL706 Delta Air Lines 5 2026-05-26
DAL1459 Delta Air Lines 5 2026-04-18
DAL865 Delta Air Lines 4 2026-04-26
DAL813 Delta Air Lines 4 2026-05-06
DAL582 Delta Air Lines 4 2026-07-19
DAL513 Delta Air Lines 4 2026-05-31
DAL2936 - 4 2026-07-12
DAL2743 Delta Air Lines 4 2026-05-03
DAL1946 Delta Air Lines 4 2026-05-10
DAL1455 Delta Air Lines 4 2026-07-26
DAL1384 Delta Air Lines 4 2026-04-18
DAL1345 Delta Air Lines 4 2026-05-03
DAL965 Delta Air Lines 3 2026-05-03
DAL961 Delta Air Lines 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2431 ATL → MKE Jul 26, 21:45 UTCJul 26, 22:00 UTC15m
2026-07-26 DAL1455 SLC → SMF Jul 26, 17:10 UTCJul 26, 19:30 UTC2h 20m
2026-07-26 DAL1455 SLC → SMF Jul 26, 13:50 UTCJul 26, 15:45 UTC1h 55m
2026-07-26 DAL1019 ORD → DTW Jul 26, 09:45 UTCJul 26, 11:15 UTC1h 30m
2026-07-26 DAL1896 ATL → UVF Jul 26, 00:30 UTCJul 26, 03:10 UTC2h 40m
2026-07-25 DAL2321 MKE → DTW Jul 25, 19:45 UTCJul 25, 22:10 UTC2h 25m
2026-07-25 DAL2465 ATL → PHL Jul 25, 15:45 UTCJul 25, 18:15 UTC2h 30m
2026-07-25 DAL2465 ATL → PHL Jul 25, 11:45 UTCJul 25, 14:20 UTC2h 35m
2026-07-25 DAL490 LGA → ATL Jul 25, 00:15 UTCJul 25, 02:00 UTC1h 45m
2026-07-24 DAL1882 SJU → ATL Jul 24, 20:50 UTCJul 24, 22:15 UTC1h 25m
2026-07-24 DAL1882 SJU → ATL Jul 24, 18:55 UTCJul 24, 19:10 UTC15m
2026-07-24 DAL1882 SJU → ATL Jul 24, 18:52 UTCJul 24, 22:18 UTC3h 26m
2026-07-24 DAL1882 SJU → ATL Jul 24, 16:55 UTCJul 24, 17:20 UTC25m
2026-07-24 DAL1882 SJU → ATL Jul 24, 14:00 UTCJul 24, 15:20 UTC1h 20m
2026-07-24 DAL1402 BWI → MSP Jul 24, 11:20 UTCJul 24, 12:30 UTC1h 10m
2026-07-24 DAL1426 JFK → DFW Jul 24, 00:25 UTCJul 24, 01:40 UTC1h 15m
2026-07-23 DAL1413 SAN → SEA Jul 23, 21:15 UTCJul 23, 22:35 UTC1h 20m
2026-07-23 DAL1413 SAN → SEA Jul 23, 18:00 UTCJul 23, 19:25 UTC1h 25m
2026-07-23 DAL1089 ATL → RSW Jul 23, 15:00 UTCJul 23, 16:20 UTC1h 20m
2026-07-23 DAL1089 ATL → RSW Jul 23, 14:58 UTCJul 23, 16:15 UTC1h 17m
2026-07-23 DAL1089 ATL → RSW Jul 23, 12:15 UTCJul 23, 13:25 UTC1h 10m
2026-07-23 DAL2722 SFO → ATL Jul 23, 09:50 UTCJul 23, 10:30 UTC40m
2026-07-22 DAL2189 DTW → PHL Jul 22, 22:35 UTCJul 22, 23:15 UTC40m
2026-07-22 DAL1983 ATL → BZE Jul 22, 19:15 UTCJul 22, 20:55 UTC1h 40m
2026-07-22 DAL754 SEA → ATL Jul 22, 13:45 UTCJul 22, 17:40 UTC3h 55m
2026-07-21 DAL680 UIO → ATL Jul 21, 23:05 UTCJul 22, 03:00 UTC3h 55m
2026-07-21 DAL835 SLC → ATL Jul 21, 16:35 UTCJul 21, 19:45 UTC3h 10m
2026-07-21 DAL1331 MSP → SJC Jul 21, 13:00 UTCJul 21, 14:25 UTC1h 25m
2026-07-21 DAL1091 CVG → LAS Jul 21, 06:15 UTCJul 21, 07:55 UTC1h 40m
2026-07-21 DAL660 ATL → SLC Jul 21, 00:05 UTCJul 21, 03:20 UTC3h 15m
2026-07-20 DAL824 - Jul 20, 19:55 UTCJul 20, 22:30 UTC2h 35m
2026-07-20 DAL2927 LAX → PHX Jul 20, 16:25 UTCJul 20, 18:00 UTC1h 35m
2026-07-20 DAL2927 LAX → PHX Jul 20, 16:25 UTCJul 20, 18:03 UTC1h 38m
2026-07-20 DAL2258 - Jul 20, 13:30 UTCJul 20, 14:50 UTC1h 20m
2026-07-20 DAL1019 BOS → DTW Jul 20, 09:50 UTCJul 20, 11:25 UTC1h 35m
2026-07-20 DAL2269 ATL → BNH Jul 20, 02:00 UTCJul 20, 04:10 UTC2h 10m
2026-07-19 DAL581 PAP → ATL Jul 19, 20:45 UTCJul 19, 23:25 UTC2h 40m
2026-07-19 DAL581 - Jul 19, 19:50 UTCJul 19, 20:10 UTC20m
2026-07-19 DAL581 AUA → ATL Jul 19, 19:48 UTCJul 19, 23:22 UTC3h 34m
2026-07-19 DAL582 ATL → AUA Jul 19, 18:00 UTCJul 19, 18:15 UTC15m
2026-07-19 DAL582 ATL → AUA Jul 19, 14:45 UTCJul 19, 17:20 UTC2h 35m
2026-07-19 DAL582 ATL → AUA Jul 19, 14:42 UTCJul 19, 18:15 UTC3h 33m
2026-07-19 DAL2242 LAS → CVG Jul 19, 09:50 UTCJul 19, 11:50 UTC2h 0m
2026-07-19 DAL2242 LAS → CVG Jul 19, 09:46 UTCJul 19, 11:46 UTC2h 0m
2026-07-19 DAL2269 ATL → BOS Jul 19, 03:09 UTCJul 19, 05:16 UTC2h 7m
2026-07-19 DAL2269 ATL → BOS Jul 19, 03:10 UTCJul 19, 05:25 UTC2h 15m
2026-07-18 DAL2104 - Jul 18, 20:20 UTCJul 18, 22:00 UTC1h 40m
2026-07-18 DAL2104 AUS → ATL Jul 18, 20:20 UTCJul 18, 22:14 UTC1h 54m
2026-07-18 DAL2104 ATL → AUS Jul 18, 16:50 UTCJul 18, 18:45 UTC1h 55m
2026-07-18 DAL342 MCO → SEA Jul 18, 12:15 UTCJul 18, 14:05 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 N105DX page for operator, model, and routing details .

Mode-S A017A8 frequently asked

What is Mode-S code A017A8?
A017A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N105DX.
Where is Mode-S A017A8 registered?
Mode-S code A017A8 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 A017A8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A017A8, octal 50013650, decimal 10,491,816.
What flights does A017A8 operate?
Mode-S A017A8 has broadcast 20 distinct callsigns, including DAL1882, DAL1491, DAL581, DAL2469, DAL990.