Apparatus

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sensors Mode-S transponder

A17B16

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N195DN · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A17B16
Octal
50275426
Decimal
10,582,806
Country
US
Tail
N195DN
Type
B763
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
329
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A17B16.

Country allocation

The ICAO 24-bit address A17B16 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
DAL679 - 13 2026-07-02
DAL205 - 13 2026-07-04
DAL405 - 12 2026-07-03
DAL204 - 12 2026-07-03
DAL636 - 11 2026-07-17
DAL480 Delta Air Lines 11 2026-07-26
DAL93 - 10 2026-06-24
DAL92 - 9 2026-06-23
DAL316 Delta Air Lines 9 2026-07-24
DAL209 - 9 2026-07-16
DAL713 - 8 2026-06-29
DAL670 Delta Air Lines 8 2026-04-17
DAL650 - 8 2026-07-14
DAL960 - 7 2026-06-28
DAL939 - 7 2026-06-29
DAL34 - 7 2026-07-16
DAL773 - 6 2026-07-14
DAL534 Delta Air Lines 6 2026-07-24
DAL427 Delta Air Lines 6 2026-07-25
DAL181 Delta Air Lines 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL480 LAX → HNL Jul 26, 21:00 UTCJul 26, 21:15 UTC15m
2026-07-26 DAL480 LAX → HNL Jul 26, 16:00 UTCJul 26, 16:25 UTC25m
2026-07-25 DAL427 JFK → SEA Jul 25, 23:00 UTCJul 25, 23:15 UTC15m
2026-07-25 DAL427 JFK → SEA Jul 25, 22:54 UTCJul 26, 03:47 UTC4h 53m
2026-07-25 DAL180 HND → HNL Jul 25, 13:15 UTCJul 25, 13:55 UTC40m
2026-07-25 DAL181 HNL → HND Jul 25, 02:50 UTCJul 25, 10:50 UTC8h 0m
2026-07-24 DAL316 SFO → JFK Jul 24, 18:00 UTCJul 25, 00:15 UTC6h 15m
2026-07-24 DAL534 ATL → DCA Jul 24, 06:10 UTCJul 24, 11:25 UTC5h 15m
2026-07-23 DAL480 LAX → HNL Jul 23, 21:05 UTCJul 24, 02:25 UTC5h 20m
2026-07-23 DAL480 LAX → HNL Jul 23, 21:04 UTCJul 24, 02:19 UTC5h 15m
2026-07-23 DAL463 LGA → DEN Jul 23, 06:40 UTCJul 23, 08:00 UTC1h 20m
2026-07-23 DAL425 BOS → LAX Jul 23, 01:25 UTCJul 23, 01:35 UTC10m
2026-07-22 DAL425 BOS → LAX Jul 22, 20:05 UTCJul 22, 20:35 UTC30m
2026-07-20 DAL427 JFK → SEA Jul 20, 23:05 UTCJul 21, 04:00 UTC4h 54m
2026-07-20 DAL180 - Jul 20, 13:15 UTCJul 20, 20:35 UTC7h 20m
2026-07-20 DAL181 HNL → HND Jul 20, 02:55 UTCJul 20, 10:35 UTC7h 40m
2026-07-20 DAL181 HNL → HND Jul 20, 02:52 UTCJul 20, 10:38 UTC7h 46m
2026-07-19 DAL316 - Jul 19, 18:00 UTCJul 20, 00:15 UTC6h 15m
2026-07-19 DAL397 - Jul 19, 09:55 UTCJul 19, 11:45 UTC1h 50m
2026-07-18 DAL623 - Jul 18, 17:55 UTCJul 18, 19:50 UTC1h 55m
2026-07-18 DAL534 ATL → DCA Jul 18, 06:00 UTCJul 18, 11:35 UTC5h 35m
2026-07-17 DAL636 - Jul 17, 15:15 UTCJul 18, 01:05 UTC9h 50m
2026-07-17 DAL636 JFK → HNL Jul 17, 15:11 UTCJul 18, 00:59 UTC9h 48m
2026-07-17 DAL915 LAX → JFK Jul 17, 07:25 UTCJul 17, 12:15 UTC4h 50m
2026-07-16 DAL707 - Jul 16, 23:25 UTCJul 17, 04:29 UTC5h 5m
2026-07-16 DAL707 JFK → LAX Jul 16, 23:20 UTCJul 17, 04:29 UTC5h 9m
2026-07-16 DAL209 EDI → JFK Jul 16, 13:12 UTCJul 16, 20:10 UTC6h 58m
2026-07-16 DAL209 EDI → JFK Jul 16, 13:12 UTCJul 16, 20:04 UTC6h 52m
2026-07-16 DAL209 - Jul 16, 13:15 UTCJul 16, 13:30 UTC15m
2026-07-16 DAL34 - Jul 16, 05:50 UTCJul 16, 10:40 UTC4h 50m
2026-07-16 DAL34 ATL → EDI Jul 16, 03:07 UTCJul 16, 10:43 UTC7h 36m
2026-07-16 DAL34 - Jul 16, 03:10 UTCJul 16, 05:45 UTC2h 35m
2026-07-14 DAL395 - Jul 14, 20:25 UTCJul 15, 00:35 UTC4h 9m
2026-07-14 DAL773 JFK → LAX Jul 14, 13:30 UTCJul 14, 18:25 UTC4h 55m
2026-07-14 DAL650 - Jul 14, 02:15 UTCJul 14, 11:40 UTC9h 25m
2026-07-14 DAL307 - Jul 14, 00:20 UTCJul 14, 00:40 UTC20m
2026-07-13 DAL307 - Jul 13, 15:55 UTCJul 13, 20:15 UTC4h 20m
2026-07-13 DAL310 - Jul 13, 05:10 UTCJul 13, 09:20 UTC4h 10m
2026-07-13 DAL310 - Jul 13, 01:01 UTCJul 13, 01:10 UTC10m
2026-07-12 DAL480 - Jul 12, 15:35 UTCJul 12, 20:40 UTC5h 5m
2026-07-12 DAL480 LAX → HNL Jul 12, 15:32 UTCJul 12, 20:36 UTC5h 4m
2026-07-11 DAL427 - Jul 11, 22:55 UTCJul 12, 03:50 UTC4h 55m
2026-07-11 DAL180 HND → HNL Jul 11, 13:18 UTCJul 11, 20:28 UTC7h 10m
2026-07-11 DAL180 - Jul 11, 13:20 UTCJul 11, 20:25 UTC7h 5m
2026-07-11 DAL181 - Jul 11, 02:50 UTCJul 11, 11:00 UTC8h 10m
2026-07-11 DAL181 HNL → HND Jul 11, 02:47 UTCJul 11, 10:58 UTC8h 11m
2026-07-10 DAL316 - Jul 10, 18:15 UTCJul 10, 20:00 UTC1h 45m
2026-07-10 DAL316 SLC → HNL Jul 10, 18:13 UTCJul 11, 00:11 UTC5h 58m
2026-07-10 DAL534 - Jul 10, 06:10 UTCJul 10, 11:35 UTC5h 25m
2026-07-07 DAL636 SEA → ANC Jul 7, 14:55 UTCJul 7, 20:35 UTC5h 40m

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 N195DN page for operator, model, and routing details .

Mode-S A17B16 frequently asked

What is Mode-S code A17B16?
A17B16 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N195DN.
Where is Mode-S A17B16 registered?
Mode-S code A17B16 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 A17B16 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17B16, octal 50275426, decimal 10,582,806.
What flights does A17B16 operate?
Mode-S A17B16 has broadcast 20 distinct callsigns, including DAL679, DAL205, DAL405, DAL204, DAL636.