Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A16C3A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N191DN · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A16C3A
Octal
50266072
Decimal
10,579,002
Country
US
Tail
N191DN
Type
B763
No current signal · last broadcast 2h ago
Flights observed
264
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A16C3A.

Country allocation

The ICAO 24-bit address A16C3A 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 17 2026-05-03
DAL650 Delta Air Lines 12 2026-06-13
DAL416 - 10 2026-06-28
DAL632 - 8 2026-07-02
DAL316 Delta Air Lines 8 2026-05-27
DAL209 Delta Air Lines 8 2026-06-01
DAL830 Delta Air Lines 7 2026-04-27
DAL427 Delta Air Lines 7 2026-06-09
DAL140 - 7 2026-06-30
DAL34 Delta Air Lines 6 2026-06-01
DAL219 Delta Air Lines 6 2026-05-15
DAL218 Delta Air Lines 6 2026-05-14
DAL181 Delta Air Lines 6 2026-06-05
DAL180 Delta Air Lines 6 2026-06-05
DAL141 - 6 2026-07-01
DAL980 - 5 2026-07-05
DAL92 Delta Air Lines 5 2026-04-18
DAL915 - 5 2026-07-11
DAL636 Delta Air Lines 5 2026-06-08
DAL480 Delta Air Lines 5 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL114 - Jul 14, 02:55 UTCJul 14, 04:40 UTC1h 45m
2026-07-13 DAL668 SFO → JFK Jul 13, 19:00 UTCJul 14, 00:10 UTC5h 10m
2026-07-13 DAL668 JFK → SFO Jul 13, 11:25 UTCJul 13, 16:35 UTC5h 10m
2026-07-12 DAL938 LAX → JFK Jul 12, 22:20 UTCJul 13, 03:20 UTC5h 0m
2026-07-12 DAL767 JFK → LAX Jul 12, 15:35 UTCJul 12, 20:45 UTC5h 10m
2026-07-12 DAL365 - Jul 12, 06:05 UTCJul 12, 11:05 UTC5h 0m
2026-07-11 DAL363 JFK → SFO Jul 11, 21:45 UTCJul 12, 03:20 UTC5h 35m
2026-07-11 DAL915 LAX → JFK Jul 11, 08:01 UTCJul 11, 12:40 UTC4h 40m
2026-07-11 DAL707 JFK → LAX Jul 11, 00:10 UTCJul 11, 05:31 UTC5h 20m
2026-07-10 DAL9967 ATL → JFK Jul 10, 03:30 UTCJul 10, 05:15 UTC1h 45m
2026-07-10 DAL9967 ATL → JFK Jul 10, 03:30 UTCJul 10, 05:06 UTC1h 36m
2026-07-09 DAL554 SEA → ATL Jul 9, 19:15 UTCJul 9, 23:35 UTC4h 20m
2026-07-09 DAL444 ATL → SEA Jul 9, 11:55 UTCJul 9, 16:45 UTC4h 50m
2026-07-09 DAL9982 ATL → ATL Jul 9, 01:40 UTCJul 9, 02:25 UTC45m
2026-07-08 DAL9980 ATL → ATL Jul 8, 13:35 UTCJul 8, 14:00 UTC25m
2026-07-06 DAL9980 ATL → ATL Jul 6, 18:55 UTCJul 6, 19:35 UTC40m
2026-07-05 DAL980 - Jul 5, 17:20 UTCJul 5, 18:30 UTC1h 10m
2026-07-05 DAL980 BOG → ATL Jul 5, 14:39 UTCJul 5, 18:50 UTC4h 11m
2026-07-04 DAL981 ATL → BOG Jul 4, 19:50 UTCJul 4, 21:20 UTC1h 30m
2026-07-03 DAL395 LAX → ATL Jul 3, 20:45 UTCJul 4, 01:00 UTC4h 15m
2026-07-03 DAL501 ATL → LAX Jul 3, 15:05 UTCJul 3, 19:05 UTC4h 0m
2026-07-02 DAL632 ATL → ATL Jul 2, 20:10 UTCJul 3, 11:05 UTC14h 55m
2026-07-01 DAL141 - Jul 1, 08:05 UTCJul 1, 17:10 UTC9h 5m
2026-06-30 DAL140 ATL → BRU Jun 30, 21:15 UTCJul 1, 05:20 UTC8h 5m
2026-06-30 DAL980 BOG → ATL Jun 30, 14:30 UTCJun 30, 18:52 UTC4h 22m
2026-06-29 DAL981 ATL → BOG Jun 29, 21:50 UTCJun 30, 00:39 UTC2h 50m
2026-06-29 DAL141 - Jun 29, 09:40 UTCJun 29, 18:30 UTC8h 50m
2026-06-28 DAL140 ATL → BRU Jun 28, 22:38 UTCJun 29, 06:45 UTC8h 7m
2026-06-28 DAL140 ATL → BRU Jun 28, 22:39 UTCJun 29, 06:44 UTC8h 5m
2026-06-28 DAL416 - Jun 28, 05:34 UTCJun 28, 12:19 UTC6h 45m
2026-06-27 DAL416 ATL → ANC Jun 27, 20:59 UTCJun 28, 03:35 UTC6h 35m
2026-06-27 DAL980 - Jun 27, 17:04 UTCJun 27, 18:39 UTC1h 35m
2026-06-27 DAL980 BOG → ATL Jun 27, 14:26 UTCJun 27, 18:43 UTC4h 17m
2026-06-26 DAL981 ATL → BOG Jun 26, 19:53 UTCJun 27, 00:20 UTC4h 27m
2026-06-26 DAL981 ATL → BOG Jun 26, 19:55 UTCJun 26, 21:35 UTC1h 40m
2026-06-26 DAL1213 ATL → MCO Jun 26, 15:20 UTCJun 26, 16:20 UTC1h 0m
2026-06-26 DAL1213 ATL → MCO Jun 26, 12:44 UTCJun 26, 13:45 UTC1h 0m
2026-06-26 DAL632 UIO → ATL Jun 26, 06:09 UTCJun 26, 10:56 UTC4h 47m
2026-06-25 DAL632 ATL → ATL Jun 25, 18:59 UTCJun 26, 10:55 UTC15h 55m
2026-06-25 DAL416 ANC → ATL Jun 25, 05:00 UTCJun 25, 11:15 UTC6h 15m
2026-06-24 DAL416 ATL → ANC Jun 24, 20:30 UTCJun 25, 03:29 UTC7h 0m
2026-06-24 DAL141 - Jun 24, 08:35 UTCJun 24, 17:50 UTC9h 15m
2026-06-24 DAL141 BRU → ATL Jun 24, 08:32 UTCJun 24, 17:47 UTC9h 15m
2026-06-22 DAL140 ATL → BRU Jun 22, 21:24 UTCJun 23, 05:18 UTC7h 54m
2026-06-22 DAL140 - Jun 22, 21:25 UTCJun 23, 04:29 UTC7h 5m
2026-06-22 DAL141 BRU → ATL Jun 22, 08:04 UTCJun 22, 17:05 UTC9h 1m
2026-06-22 DAL141 BRU → ATL Jun 22, 08:04 UTCJun 22, 17:10 UTC9h 5m
2026-06-21 DAL140 ATL → BRU Jun 21, 21:24 UTCJun 22, 05:24 UTC8h 0m
2026-06-21 DAL140 - Jun 21, 21:24 UTCJun 22, 05:20 UTC7h 55m
2026-06-19 DAL632 - Jun 19, 07:54 UTCJun 19, 10:54 UTC3h 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 N191DN page for operator, model, and routing details .

Mode-S A16C3A frequently asked

What is Mode-S code A16C3A?
A16C3A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N191DN.
Where is Mode-S A16C3A registered?
Mode-S code A16C3A 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 A16C3A broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A16C3A, octal 50266072, decimal 10,579,002.
What flights does A16C3A operate?
Mode-S A16C3A has broadcast 20 distinct callsigns, including DAL1882, DAL650, DAL416, DAL632, DAL316.