Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A716F6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N556NW · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A716F6
Octal
51613366
Decimal
10,950,390
Country
US
Tail
N556NW
Type
B752
No current signal · last broadcast 3h ago
Flights observed
426
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A716F6.

Country allocation

The ICAO 24-bit address A716F6 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
DAL777 Delta Air Lines 12 2026-06-24
DAL391 Delta Air Lines 11 2026-06-07
DAL348 Delta Air Lines 11 2026-06-16
DAL549 - 8 2026-07-11
DAL2262 Delta Air Lines 8 2026-07-03
DAL1463 - 8 2026-07-09
DAL1462 Delta Air Lines 8 2026-06-01
DAL2881 - 7 2026-07-04
DAL1902 Delta Air Lines 7 2026-07-01
DAL1214 Delta Air Lines 7 2026-05-24
DAL796 - 6 2026-06-18
DAL466 - 6 2026-07-08
DAL1298 Delta Air Lines 6 2026-07-07
DAL857 Delta Air Lines 5 2026-06-24
DAL2326 Delta Air Lines 5 2026-04-28
DAL1785 - 5 2026-07-13
DAL1588 - 5 2026-07-04
DAL1001 - 5 2026-07-14
DAL929 - 4 2026-07-13
DAL8887 Delta Air Lines 4 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1001 - Jul 14, 02:10 UTCJul 14, 03:00 UTC50m
2026-07-14 DAL1001 ATL → JAX Jul 14, 02:10 UTCJul 14, 03:03 UTC53m
2026-07-13 DAL1785 - Jul 13, 22:10 UTCJul 13, 23:40 UTC1h 30m
2026-07-13 DAL1785 - Jul 13, 19:35 UTCJul 13, 19:45 UTC10m
2026-07-13 DAL2350 - Jul 13, 13:50 UTCJul 13, 17:05 UTC3h 15m
2026-07-13 DAL929 - Jul 13, 07:50 UTCJul 13, 10:55 UTC3h 5m
2026-07-12 DAL1135 - Jul 12, 21:45 UTCJul 13, 01:10 UTC3h 25m
2026-07-12 DAL1031 ATL → DTW Jul 12, 18:32 UTCJul 12, 20:03 UTC1h 31m
2026-07-12 DAL1031 - Jul 12, 18:35 UTCJul 12, 20:05 UTC1h 30m
2026-07-12 DAL755 LAS → ATL Jul 12, 13:25 UTCJul 12, 16:50 UTC3h 25m
2026-07-11 DAL549 ATL → LAS Jul 11, 18:00 UTCJul 11, 21:35 UTC3h 35m
2026-07-11 DAL2204 - Jul 11, 15:10 UTCJul 11, 16:10 UTC1h 0m
2026-07-11 DAL2204 ATL → MCO Jul 11, 12:40 UTCJul 11, 13:40 UTC1h 0m
2026-07-10 DAL1873 - Jul 10, 19:55 UTCJul 10, 23:20 UTC3h 25m
2026-07-10 DAL1873 SXM → ATL Jul 10, 19:44 UTCJul 10, 23:23 UTC3h 39m
2026-07-10 DAL1894 - Jul 10, 14:05 UTCJul 10, 17:20 UTC3h 15m
2026-07-10 DAL1215 - Jul 10, 10:50 UTCJul 10, 12:10 UTC1h 20m
2026-07-10 DAL1229 ATL → FLL Jul 10, 03:45 UTCJul 10, 05:05 UTC1h 20m
2026-07-09 DAL599 - Jul 9, 22:55 UTCJul 10, 01:35 UTC2h 40m
2026-07-09 DAL599 MEX → ATL Jul 9, 22:52 UTCJul 10, 01:41 UTC2h 49m
2026-07-09 DAL602 - Jul 9, 16:55 UTCJul 9, 19:20 UTC2h 25m
2026-07-09 DAL602 ATL → MEX Jul 9, 16:55 UTCJul 9, 20:04 UTC3h 9m
2026-07-09 DAL1463 MCO → ATL Jul 9, 12:30 UTCJul 9, 13:35 UTC1h 5m
2026-07-09 DAL1162 ATL → MCO Jul 9, 03:50 UTCJul 9, 04:50 UTC1h 0m
2026-07-08 DAL466 LAS → ATL Jul 8, 20:40 UTCJul 9, 00:05 UTC3h 25m
2026-07-08 DAL466 ATL → LAS Jul 8, 15:15 UTCJul 8, 18:50 UTC3h 35m
2026-07-08 DAL2569 - Jul 8, 12:30 UTCJul 8, 13:10 UTC40m
2026-07-08 DAL2569 JAX → ATL Jul 8, 12:25 UTCJul 8, 13:11 UTC46m
2026-07-08 DAL2276 - Jul 8, 03:30 UTCJul 8, 04:15 UTC45m
2026-07-08 DAL2276 ATL → JAX Jul 8, 03:30 UTCJul 8, 04:13 UTC43m
2026-07-07 DAL591 LAS → ATL Jul 7, 22:30 UTCJul 8, 02:00 UTC3h 30m
2026-07-07 DAL421 - Jul 7, 17:10 UTCJul 7, 20:45 UTC3h 35m
2026-07-07 DAL421 DTW → LAS Jul 7, 17:08 UTCJul 7, 20:47 UTC3h 39m
2026-07-07 DAL1298 ATL → DTW Jul 7, 14:22 UTCJul 7, 15:41 UTC1h 19m
2026-07-07 DAL1298 ATL → DTW Jul 7, 14:25 UTCJul 7, 15:45 UTC1h 20m
2026-07-07 DAL1611 - Jul 7, 10:30 UTCJul 7, 12:00 UTC1h 30m
2026-07-06 DAL778 - Jul 6, 22:35 UTCJul 7, 02:05 UTC3h 30m
2026-07-06 DAL807 JFK → LAS Jul 6, 16:30 UTCJul 6, 21:15 UTC4h 45m
2026-07-06 DAL2420 ATL → JFK Jul 6, 12:35 UTCJul 6, 14:20 UTC1h 45m
2026-07-06 DAL1385 RSW → ATL Jul 6, 09:50 UTCJul 6, 11:05 UTC1h 15m
2026-07-06 DAL1083 ATL → RSW Jul 6, 02:35 UTCJul 6, 04:00 UTC1h 25m
2026-07-06 DAL3112 SAV → ATL Jul 6, 00:25 UTCJul 6, 01:05 UTC40m
2026-07-05 DAL3112 - Jul 5, 21:10 UTCJul 5, 22:05 UTC55m
2026-07-05 DAL3013 - Jul 5, 18:10 UTCJul 5, 19:25 UTC1h 15m
2026-07-05 DAL3013 IND → ATL Jul 5, 18:09 UTCJul 5, 19:20 UTC1h 11m
2026-07-05 DAL3013 ATL → IND Jul 5, 15:25 UTCJul 5, 16:30 UTC1h 5m
2026-07-05 DAL1463 - Jul 5, 12:25 UTCJul 5, 13:25 UTC1h 0m
2026-07-05 DAL1463 MCO → ATL Jul 5, 12:23 UTCJul 5, 13:26 UTC1h 3m
2026-07-04 DAL2881 - Jul 4, 23:45 UTCJul 5, 00:45 UTC1h 0m
2026-07-04 DAL2881 ATL → MCO Jul 4, 23:44 UTCJul 5, 00:46 UTC1h 2m

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 N556NW page for operator, model, and routing details .

Mode-S A716F6 frequently asked

What is Mode-S code A716F6?
A716F6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N556NW.
Where is Mode-S A716F6 registered?
Mode-S code A716F6 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 A716F6 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A716F6, octal 51613366, decimal 10,950,390.
What flights does A716F6 operate?
Mode-S A716F6 has broadcast 20 distinct callsigns, including DAL777, DAL391, DAL348, DAL549, DAL2262.