Apparatus

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sensors Mode-S transponder

A18284

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N197DN · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A18284
Octal
50301204
Decimal
10,584,708
Country
US
Tail
N197DN
Type
B763
No current signal · last broadcast Jul 26, 17:50 UTC
Flights observed
316
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 17:50 UTC

Last known position

Most recent position reported by Mode-S A18284.

Country allocation

The ICAO 24-bit address A18284 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
DAL668 - 10 2026-07-09
DAL981 Delta Air Lines 9 2026-07-06
DAL980 - 9 2026-07-06
DAL633 - 9 2026-07-13
DAL416 - 9 2026-07-13
DAL636 - 8 2026-07-19
DAL632 - 8 2026-07-14
DAL623 Delta Air Lines 8 2026-07-22
DAL208 - 8 2026-07-11
DAL246 Delta Air Lines 7 2026-05-17
DAL713 Delta Air Lines 6 2026-05-31
DAL534 Delta Air Lines 6 2026-07-20
DAL53 Delta Air Lines 6 2026-06-05
DAL463 Delta Air Lines 6 2026-06-13
DAL425 - 6 2026-06-13
DAL35 - 6 2026-07-12
DAL217 Delta Air Lines 6 2026-07-26
DAL180 Delta Air Lines 6 2026-06-07
DAL115 - 6 2026-07-15
DAL938 Delta Air Lines 5 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL217 DSS → JFK Jul 26, 10:05 UTCJul 26, 17:50 UTC7h 45m
2026-07-26 DAL217 DSS → JFK Jul 26, 10:05 UTCJul 26, 17:50 UTC7h 45m
2026-07-25 DAL216 JFK → DSS Jul 25, 23:35 UTCJul 26, 00:30 UTC55m
2026-07-25 DAL216 JFK → DSS Jul 25, 23:32 UTCJul 26, 06:45 UTC7h 13m
2026-07-25 DAL209 EDI → JFK Jul 25, 13:20 UTCJul 25, 20:30 UTC7h 10m
2026-07-25 DAL34 ATL → EDI Jul 25, 03:15 UTCJul 25, 10:20 UTC7h 5m
2026-07-24 DAL395 LAX → ATL Jul 24, 20:30 UTCJul 25, 00:35 UTC4h 5m
2026-07-24 DAL773 DTW → PHX Jul 24, 13:30 UTCJul 24, 18:50 UTC5h 20m
2026-07-24 DAL650 JFK → ATL Jul 24, 02:05 UTCJul 24, 10:45 UTC8h 40m
2026-07-23 DAL316 SFO → JFK Jul 23, 18:10 UTCJul 24, 00:30 UTC6h 20m
2026-07-23 DAL397 SLC → HNL Jul 23, 09:40 UTCJul 23, 11:20 UTC1h 40m
2026-07-22 DAL623 ATL → SFO Jul 22, 19:30 UTCJul 22, 21:15 UTC1h 45m
2026-07-22 DAL397 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 DAL623 - Jul 21, 17:55 UTCJul 21, 19:35 UTC1h 40m
2026-07-21 DAL623 SLC → OGG Jul 21, 17:53 UTCJul 22, 00:19 UTC6h 26m
2026-07-21 DAL397 - Jul 21, 09:50 UTCJul 21, 11:55 UTC2h 5m
2026-07-20 DAL623 - Jul 20, 17:35 UTCJul 20, 19:10 UTC1h 35m
2026-07-20 DAL623 SLC → OGG Jul 20, 17:34 UTCJul 20, 23:37 UTC6h 3m
2026-07-20 DAL534 ATL → DCA Jul 20, 06:00 UTCJul 20, 11:40 UTC5h 40m
2026-07-20 DAL534 ATL → DCA Jul 20, 06:00 UTCJul 20, 11:34 UTC5h 34m
2026-07-19 DAL636 - Jul 19, 15:15 UTCJul 20, 01:15 UTC10h 0m
2026-07-19 DAL9961 VQQ → ATL Jul 19, 12:40 UTCJul 19, 13:15 UTC35m
2026-07-19 DAL9961 VQQ → ATL Jul 19, 12:38 UTCJul 19, 13:07 UTC29m
2026-07-18 DAL217 - Jul 18, 19:35 UTCJul 18, 19:40 UTC5m
2026-07-18 DAL217 OLB → EWR Jul 18, 09:45 UTCJul 18, 19:40 UTC9h 55m
2026-07-18 DAL217 OLB → PHL Jul 18, 09:45 UTCJul 18, 19:19 UTC9h 34m
2026-07-17 DAL216 JFK → OLB Jul 17, 22:53 UTCJul 18, 06:37 UTC7h 44m
2026-07-17 DAL216 - Jul 17, 22:55 UTCJul 18, 06:40 UTC7h 46m
2026-07-17 DAL45 DUB → JFK Jul 17, 12:40 UTCJul 17, 19:20 UTC6h 40m
2026-07-17 DAL45 DUB → JFK Jul 17, 12:36 UTCJul 17, 19:17 UTC6h 41m
2026-07-17 DAL154 BOS → DUB Jul 17, 04:01 UTCJul 17, 09:43 UTC5h 42m
2026-07-17 DAL154 BOS → DUB Jul 17, 04:04 UTCJul 17, 09:40 UTC5h 35m
2026-07-16 DAL155 DUB → BOS Jul 16, 14:25 UTCJul 16, 20:49 UTC6h 25m
2026-07-16 DAL44 JFK → DUB Jul 16, 02:11 UTCJul 16, 08:07 UTC5h 56m
2026-07-16 DAL44 - Jul 16, 02:15 UTCJul 16, 03:00 UTC45m
2026-07-15 DAL115 - Jul 15, 12:55 UTCJul 15, 13:35 UTC40m
2026-07-15 DAL115 OPO → JFK Jul 15, 12:54 UTCJul 15, 19:52 UTC6h 58m
2026-07-15 DAL115 OPO → JFK Jul 15, 12:54 UTCJul 15, 19:54 UTC7h 0m
2026-07-15 DAL114 JFK → OPO Jul 15, 04:20 UTCJul 15, 10:35 UTC6h 15m
2026-07-14 DAL991 LAX → JFK Jul 14, 20:40 UTCJul 15, 01:45 UTC5h 4m
2026-07-14 DAL501 ATL → LAX Jul 14, 15:15 UTCJul 14, 19:15 UTC4h 0m
2026-07-14 DAL632 UIO → ATL Jul 14, 06:20 UTCJul 14, 11:07 UTC4h 47m
2026-07-13 DAL633 - Jul 13, 19:15 UTCJul 13, 22:00 UTC2h 45m
2026-07-13 DAL416 ANC → ATL Jul 13, 05:05 UTCJul 13, 11:30 UTC6h 25m
2026-07-12 DAL416 ATL → ANC Jul 12, 20:01 UTCJul 13, 02:55 UTC6h 55m
2026-07-12 DAL35 EDI → ATL Jul 12, 08:20 UTCJul 12, 16:20 UTC8h 0m
2026-07-12 DAL122 BOS → EDI Jul 12, 00:15 UTCJul 12, 06:05 UTC5h 50m
2026-07-11 DAL123 EDI → BOS Jul 11, 10:36 UTCJul 11, 17:17 UTC6h 41m
2026-07-11 DAL123 EDI → BOS Jul 11, 10:36 UTCJul 11, 17:21 UTC6h 45m
2026-07-11 DAL123 - Jul 11, 10:40 UTCJul 11, 11:40 UTC1h 0m

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 N197DN page for operator, model, and routing details .

Mode-S A18284 frequently asked

What is Mode-S code A18284?
A18284 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N197DN.
Where is Mode-S A18284 registered?
Mode-S code A18284 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 A18284 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A18284, octal 50301204, decimal 10,584,708.
What flights does A18284 operate?
Mode-S A18284 has broadcast 20 distinct callsigns, including DAL668, DAL981, DAL980, DAL633, DAL416.