Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A13AF4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N179DN · BOEING 767-300 · operated by DELTA AIR LINES INC

Hex
A13AF4
Octal
50235364
Decimal
10,566,388
Country
US
Tail
N179DN
Type
B763
No current signal · last broadcast 1h ago
Flights observed
146
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A13AF4.

Country allocation

The ICAO 24-bit address A13AF4 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
DAL669 Delta Air Lines 27 2026-05-28
DAL531 Delta Air Lines 17 2026-05-28
DAL691 Delta Air Lines 13 2026-05-03
DAL715 Delta Air Lines 9 2026-05-04
DAL365 Delta Air Lines 9 2026-05-28
DAL78 Delta Air Lines 7 2026-05-23
DAL488 Delta Air Lines 6 2026-05-29
DAL823 Delta Air Lines 5 2026-05-29
DAL79 Delta Air Lines 5 2026-05-24
DAL285 Delta Air Lines 4 2026-05-27
DAL284 Delta Air Lines 3 2026-05-30
DAL209 Delta Air Lines 3 2026-05-08
DAL996 Delta Air Lines 2 2026-05-01
DAL934 Delta Air Lines 2 2026-05-12
DAL676 Delta Air Lines 2 2026-04-24
DAL670 Delta Air Lines 2 2026-05-06
DAL668 Delta Air Lines 2 2026-05-22
DAL625 Delta Air Lines 2 2026-04-20
DAL446 Delta Air Lines 2 2026-05-02
DAL416 Delta Air Lines 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 DAL284 ICN → DTW May 30, 04:15 UTCMay 30, 05:00 UTC45m
2026-05-29 DAL488 MCO → MSP May 29, 21:05 UTCMay 30, 02:20 UTC5h 15m
2026-05-29 DAL823 SFO → ATL May 29, 14:40 UTCMay 29, 19:11 UTC4h 31m
2026-05-29 DAL823 SFO → ATL May 29, 14:40 UTCMay 29, 19:10 UTC4h 30m
2026-05-28 DAL531 LAX → SFO May 28, 21:00 UTCMay 29, 01:10 UTC4h 10m
2026-05-28 DAL669 MSP → SEA May 28, 13:40 UTCMay 28, 19:25 UTC5h 45m
2026-05-28 DAL365 ATL → MEX May 28, 05:50 UTCMay 28, 10:50 UTC5h 0m
2026-05-27 DAL365 ATL → MEX May 27, 21:30 UTCMay 28, 03:00 UTC5h 30m
2026-05-27 DAL285 SFO → JFK May 27, 12:20 UTCMay 27, 12:50 UTC30m
2026-05-27 DAL285 SFO → JFK May 27, 12:17 UTCMay 27, 18:34 UTC6h 17m
2026-05-27 DAL285 SFO → JFK May 27, 12:17 UTCMay 27, 18:37 UTC6h 20m
2026-05-27 DAL284 ICN → DTW May 27, 03:59 UTCMay 27, 09:55 UTC5h 56m
2026-05-26 DAL488 MCO → MSP May 26, 20:34 UTCMay 27, 01:34 UTC5h 0m
2026-05-26 DAL823 SFO → ATL May 26, 13:54 UTCMay 26, 18:30 UTC4h 35m
2026-05-25 DAL531 LAX → SFO May 25, 21:24 UTCMay 26, 01:40 UTC4h 15m
2026-05-25 DAL531 LAX → SFO May 25, 21:24 UTCMay 26, 01:39 UTC4h 15m
2026-05-25 DAL669 MSP → SEA May 25, 13:35 UTCMay 25, 19:10 UTC5h 35m
2026-05-25 DAL365 ATL → MEX May 25, 05:45 UTCMay 25, 10:45 UTC5h 0m
2026-05-25 DAL365 ATL → MEX May 25, 05:41 UTCMay 25, 10:41 UTC5h 0m
2026-05-24 DAL365 ATL → MEX May 24, 21:25 UTCMay 25, 03:30 UTC6h 5m
2026-05-24 DAL79 PRG → JFK May 24, 09:20 UTCMay 24, 11:45 UTC2h 25m
2026-05-24 DAL79 PRG → JFK May 24, 09:17 UTCMay 24, 17:43 UTC8h 26m
2026-05-23 DAL78 JFK → PRG May 23, 23:37 UTCMay 24, 07:15 UTC7h 38m
2026-05-23 DAL78 JFK → PRG May 23, 23:40 UTCMay 24, 07:20 UTC7h 40m
2026-05-23 DAL285 SFO → JFK May 23, 12:05 UTCMay 23, 18:50 UTC6h 45m
2026-05-23 DAL284 ICN → DTW May 23, 04:15 UTCMay 23, 09:30 UTC5h 15m
2026-05-22 DAL668 JFK → LAS May 22, 19:25 UTCMay 23, 00:20 UTC4h 55m
2026-05-22 DAL668 JFK → LAS May 22, 11:40 UTCMay 22, 17:45 UTC6h 5m
2026-05-22 DAL960 SLC → CVG May 22, 04:35 UTCMay 22, 09:20 UTC4h 45m
2026-05-21 DAL738 BOS → SLC May 21, 19:55 UTCMay 22, 01:15 UTC5h 20m
2026-05-20 DAL488 MCO → MSP May 20, 21:25 UTCMay 21, 02:30 UTC5h 5m
2026-05-20 DAL669 MSP → SEA May 20, 13:20 UTCMay 20, 19:00 UTC5h 40m
2026-05-20 DAL365 ATL → MEX May 20, 05:45 UTCMay 20, 10:30 UTC4h 45m
2026-05-19 DAL365 ATL → MEX May 19, 20:50 UTCMay 20, 02:45 UTC5h 55m
2026-05-19 DAL79 PRG → JFK May 19, 09:25 UTCMay 19, 17:40 UTC8h 15m
2026-05-18 DAL78 JFK → PRG May 18, 23:15 UTCMay 19, 06:50 UTC7h 35m
2026-05-18 DAL247 KEF → JFK May 18, 11:25 UTCMay 18, 16:35 UTC5h 10m
2026-05-18 DAL246 JFK → KEF May 18, 04:15 UTCMay 18, 05:35 UTC1h 20m
2026-05-18 DAL246 JFK → KEF May 18, 04:12 UTCMay 18, 09:19 UTC5h 7m
2026-05-17 DAL488 MCO → MSP May 17, 21:15 UTCMay 18, 02:20 UTC5h 5m
2026-05-17 DAL823 SFO → ATL May 17, 14:35 UTCMay 17, 19:15 UTC4h 40m
2026-05-17 DAL416 ATL → EWR May 17, 04:10 UTCMay 17, 10:45 UTC6h 35m
2026-05-16 DAL416 ATL → EWR May 16, 19:35 UTCMay 17, 02:35 UTC7h 0m
2026-05-15 DAL531 LAX → SFO May 15, 21:50 UTCMay 16, 01:45 UTC3h 55m
2026-05-15 DAL669 MSP → SEA May 15, 13:30 UTCMay 15, 19:50 UTC6h 19m
2026-05-15 DAL365 ATL → MEX May 15, 06:05 UTCMay 15, 10:55 UTC4h 50m
2026-05-14 DAL365 ATL → MEX May 14, 21:45 UTCMay 15, 03:20 UTC5h 35m
2026-05-14 DAL79 PRG → JFK May 14, 09:15 UTCMay 14, 17:50 UTC8h 35m
2026-05-13 DAL78 JFK → PRG May 13, 23:39 UTCMay 14, 07:07 UTC7h 28m
2026-05-13 DAL78 JFK → PRG May 13, 23:40 UTCMay 14, 05:00 UTC5h 20m

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 N179DN page for operator, model, and routing details .

Mode-S A13AF4 frequently asked

What is Mode-S code A13AF4?
A13AF4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N179DN.
Where is Mode-S A13AF4 registered?
Mode-S code A13AF4 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 A13AF4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A13AF4, octal 50235364, decimal 10,566,388.
What flights does A13AF4 operate?
Mode-S A13AF4 has broadcast 20 distinct callsigns, including DAL669, DAL531, DAL691, DAL715, DAL365.