Apparatus

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sensors Mode-S transponder

A04DFA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N119DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A04DFA
Octal
50046772
Decimal
10,505,722
Country
US
Tail
N119DN
Type
A321
Broadcasting now · callsign DAL2313 · 35,475 ft
Flights observed
554
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Current position

A04DFA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A04DFA 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
DAL1177 - 9 2026-07-13
DAL2564 Delta Air Lines 8 2026-07-24
DAL1252 - 6 2026-07-16
DAL1181 Delta Air Lines 6 2026-05-11
DAL342 Delta Air Lines 5 2026-07-26
DAL2990 - 5 2026-06-30
DAL2719 Delta Air Lines 5 2026-07-24
DAL2587 - 5 2026-06-28
DAL2308 Delta Air Lines 5 2026-05-16
DAL1648 Delta Air Lines 5 2026-07-19
DAL988 Delta Air Lines 4 2026-07-26
DAL813 Delta Air Lines 4 2026-04-29
DAL754 Delta Air Lines 4 2026-05-21
DAL582 - 4 2026-06-22
DAL581 - 4 2026-06-22
DAL519 - 4 2026-07-10
DAL493 Delta Air Lines 4 2026-06-03
DAL434 Delta Air Lines 4 2026-07-26
DAL2936 - 4 2026-07-02
DAL2849 Delta Air Lines 4 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL434 BOS → LAX Jul 26, 22:15 UTCJul 26, 22:30 UTC15m
2026-07-26 DAL988 SFO → JFK Jul 26, 18:25 UTCJul 26, 20:10 UTC1h 45m
2026-07-26 DAL988 SFO → JFK Jul 26, 18:23 UTCJul 26, 20:04 UTC1h 41m
2026-07-26 DAL371 JFK → SFO Jul 26, 15:05 UTCJul 26, 16:50 UTC1h 45m
2026-07-26 DAL342 MCO → SEA Jul 26, 11:05 UTCJul 26, 12:45 UTC1h 40m
2026-07-26 DAL520 JFK → LAX Jul 26, 02:00 UTCJul 26, 03:40 UTC1h 40m
2026-07-25 DAL706 SAN → DTW Jul 25, 20:45 UTCJul 25, 23:15 UTC2h 30m
2026-07-25 DAL706 SAN → DTW Jul 25, 16:40 UTCJul 25, 19:20 UTC2h 40m
2026-07-25 DAL1505 SLC → SAT Jul 25, 13:25 UTCJul 25, 14:25 UTC1h 0m
2026-07-25 DAL2540 ATL → MSN Jul 25, 00:20 UTCJul 25, 02:30 UTC2h 10m
2026-07-24 DAL2564 LGA → MCO Jul 24, 20:00 UTCJul 24, 22:15 UTC2h 15m
2026-07-24 DAL2564 LGA → MCO Jul 24, 16:00 UTCJul 24, 18:05 UTC2h 5m
2026-07-24 DAL2564 LGA → MCO Jul 24, 15:56 UTCJul 24, 18:12 UTC2h 16m
2026-07-24 DAL2719 TLH → ATL Jul 24, 12:30 UTCJul 24, 14:35 UTC2h 5m
2026-07-23 DAL2191 JFK → SLC Jul 23, 22:53 UTCJul 24, 01:59 UTC3h 6m
2026-07-23 DAL2191 JFK → SLC Jul 23, 22:55 UTCJul 24, 02:05 UTC3h 10m
2026-07-23 DAL2155 LGA → MCO Jul 23, 17:15 UTCJul 23, 21:25 UTC4h 10m
2026-07-23 DAL1078 BOS → LGA Jul 23, 13:54 UTCJul 23, 15:14 UTC1h 20m
2026-07-23 DAL1078 BOS → LGA Jul 23, 13:55 UTCJul 23, 15:20 UTC1h 25m
2026-07-23 DAL404 SFO → DTW Jul 23, 10:15 UTCJul 23, 12:05 UTC1h 50m
2026-07-23 DAL404 SFO → DTW Jul 23, 10:15 UTCJul 23, 11:50 UTC1h 35m
2026-07-22 DAL1882 SJU → ATL Jul 22, 20:30 UTCJul 22, 22:10 UTC1h 40m
2026-07-22 DAL1882 SJU → ATL Jul 22, 18:55 UTCJul 22, 19:10 UTC15m
2026-07-22 DAL1882 SJU → ATL Jul 22, 14:05 UTCJul 22, 17:25 UTC3h 20m
2026-07-21 DAL1349 CVG → ATL Jul 21, 22:35 UTCJul 21, 23:55 UTC1h 20m
2026-07-21 DAL1349 CVG → ATL Jul 21, 22:33 UTCJul 21, 23:56 UTC1h 23m
2026-07-21 DAL1225 MCO → LGA Jul 21, 18:45 UTCJul 21, 21:10 UTC2h 25m
2026-07-21 DAL1225 MCO → LGA Jul 21, 18:41 UTCJul 21, 21:01 UTC2h 20m
2026-07-21 DAL864 SEA → ATL Jul 21, 13:05 UTCJul 21, 16:35 UTC3h 30m
2026-07-20 DAL766 SFO → DTW Jul 20, 20:45 UTCJul 21, 00:30 UTC3h 44m
2026-07-20 DAL2222 YUL → ATL Jul 20, 17:33 UTCJul 20, 19:09 UTC1h 36m
2026-07-20 DAL2222 YUL → ATL Jul 20, 17:35 UTCJul 20, 19:10 UTC1h 35m
2026-07-20 DAL2648 DTW → BOS Jul 20, 14:25 UTCJul 20, 15:50 UTC1h 25m
2026-07-20 DAL1201 MCO → DTW Jul 20, 10:25 UTCJul 20, 12:35 UTC2h 10m
2026-07-20 DAL1123 LAX → BOS Jul 20, 02:55 UTCJul 20, 04:55 UTC2h 0m
2026-07-19 DAL1648 DTW → DEN Jul 19, 21:15 UTCJul 19, 23:35 UTC2h 20m
2026-07-19 DAL1648 DTW → DEN Jul 19, 16:55 UTCJul 19, 19:20 UTC2h 25m
2026-07-19 DAL2994 - Jul 19, 00:15 UTCJul 19, 02:10 UTC1h 55m
2026-07-18 DAL2994 - Jul 18, 21:15 UTCJul 18, 23:10 UTC1h 55m
2026-07-18 DAL2787 DEN → DTW Jul 18, 16:45 UTCJul 18, 19:00 UTC2h 15m
2026-07-18 DAL1317 SLC → SFO Jul 18, 14:20 UTCJul 18, 15:25 UTC1h 5m
2026-07-18 DAL453 ATL → SLC Jul 18, 03:10 UTCJul 18, 06:30 UTC3h 20m
2026-07-17 DAL964 LGA → ATL Jul 17, 23:10 UTCJul 18, 01:00 UTC1h 50m
2026-07-17 DAL964 LGA → ATL Jul 17, 23:09 UTCJul 18, 00:53 UTC1h 44m
2026-07-17 DAL524 LAX → SFO Jul 17, 19:40 UTCJul 17, 21:39 UTC2h 0m
2026-07-17 DAL993 LGA → ATL Jul 17, 15:15 UTCJul 17, 16:55 UTC1h 40m
2026-07-17 DAL323 LAX → JFK Jul 17, 11:50 UTCJul 17, 13:29 UTC1h 40m
2026-07-17 DAL912 SLC → ATL Jul 17, 05:45 UTCJul 17, 09:04 UTC3h 20m
2026-07-17 DAL833 - Jul 17, 02:54 UTCJul 17, 04:25 UTC1h 30m
2026-07-16 DAL1252 SLC → SAN Jul 16, 23:35 UTCJul 17, 01:05 UTC1h 30m

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 N119DN page for operator, model, and routing details .

Mode-S A04DFA frequently asked

What is Mode-S code A04DFA?
A04DFA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N119DN.
Where is Mode-S A04DFA registered?
Mode-S code A04DFA 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 A04DFA broadcasting right now?
Yes. Mode-S A04DFA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A04DFA, octal 50046772, decimal 10,505,722.
What flights does A04DFA operate?
Mode-S A04DFA has broadcast 20 distinct callsigns, including DAL1177, DAL2564, DAL1252, DAL1181, DAL342.