Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC57F9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N895AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AC57F9
Octal
53053771
Decimal
11,294,713
Country
US
Tail
N895AT
Type
B712
No current signal · last broadcast 6h ago
Flights observed
655
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S AC57F9.

Country allocation

The ICAO 24-bit address AC57F9 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
DAL2814 - 13 2026-06-30
DAL2577 - 13 2026-07-03
DAL2715 - 10 2026-06-30
DAL3166 Delta Air Lines 9 2026-07-02
DAL2761 - 9 2026-06-24
DAL2684 Delta Air Lines 9 2026-06-08
DAL2601 - 9 2026-06-30
DAL1418 Delta Air Lines 9 2026-06-04
DAL2676 Delta Air Lines 8 2026-07-03
DAL2060 - 8 2026-07-04
DAL2039 - 8 2026-07-03
DAL1716 Delta Air Lines 8 2026-06-04
DAL1665 - 8 2026-07-03
DAL1549 Delta Air Lines 8 2026-06-12
DAL1278 Delta Air Lines 8 2026-05-22
DAL2573 - 7 2026-06-19
DAL2480 - 7 2026-07-02
DAL1787 Delta Air Lines 7 2026-06-18
DAL1343 - 7 2026-07-01
DAL976 Delta Air Lines 6 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL720 - Jul 13, 23:15 UTCJul 13, 23:55 UTC40m
2026-07-13 DAL2539 - Jul 13, 20:40 UTCJul 13, 21:40 UTC1h 0m
2026-07-13 DAL2539 GSO → ATL Jul 13, 20:37 UTCJul 13, 21:42 UTC1h 5m
2026-07-13 DAL2539 - Jul 13, 18:40 UTCJul 13, 19:30 UTC50m
2026-07-13 DAL441 DAL → ATL Jul 13, 15:30 UTCJul 13, 17:05 UTC1h 35m
2026-07-13 DAL441 ATL → DAL Jul 13, 12:20 UTCJul 13, 14:00 UTC1h 40m
2026-07-13 DAL3187 - Jul 13, 10:00 UTCJul 13, 10:55 UTC55m
2026-07-13 DAL3187 ILM → ATL Jul 13, 09:57 UTCJul 13, 10:58 UTC1h 1m
2026-07-13 DAL3070 ATL → ILM Jul 13, 02:21 UTCJul 13, 03:16 UTC55m
2026-07-13 DAL3070 - Jul 13, 02:25 UTCJul 13, 03:15 UTC50m
2026-07-12 DAL3063 - Jul 12, 23:35 UTCJul 13, 00:55 UTC1h 20m
2026-07-12 DAL3063 GPT → ATL Jul 12, 23:28 UTCJul 13, 00:55 UTC1h 27m
2026-07-12 DAL3063 - Jul 12, 21:25 UTCJul 12, 22:25 UTC1h 0m
2026-07-12 DAL2620 - Jul 12, 18:15 UTCJul 12, 20:15 UTC2h 0m
2026-07-12 DAL2620 TUL → ATL Jul 12, 18:12 UTCJul 12, 20:21 UTC2h 9m
2026-07-12 DAL2043 - Jul 12, 04:50 UTCJul 12, 06:25 UTC1h 35m
2026-07-12 DAL2043 ATL → TUL Jul 12, 04:47 UTCJul 12, 06:23 UTC1h 36m
2026-07-12 DAL2467 - Jul 12, 02:45 UTCJul 12, 03:35 UTC50m
2026-07-12 DAL2467 - Jul 12, 00:35 UTCJul 12, 01:20 UTC45m
2026-07-11 DAL3060 - Jul 11, 22:20 UTCJul 11, 23:05 UTC45m
2026-07-11 DAL3060 - Jul 11, 16:30 UTCJul 11, 17:40 UTC1h 10m
2026-07-11 DAL3011 SAV → ATL Jul 11, 14:45 UTCJul 11, 15:20 UTC35m
2026-07-11 DAL3011 ATL → SAV Jul 11, 12:50 UTCJul 11, 13:35 UTC45m
2026-07-11 DAL1959 - Jul 11, 04:35 UTCJul 11, 05:25 UTC50m
2026-07-11 DAL1959 MOB → ATL Jul 11, 04:33 UTCJul 11, 05:21 UTC48m
2026-07-11 DAL1959 - Jul 11, 02:35 UTCJul 11, 03:25 UTC50m
2026-07-10 DAL2157 CLT → ATL Jul 10, 23:42 UTCJul 11, 00:29 UTC47m
2026-07-10 DAL2157 - Jul 10, 22:50 UTCJul 10, 23:25 UTC35m
2026-07-10 DAL2157 - Jul 10, 17:20 UTCJul 10, 18:10 UTC50m
2026-07-10 DAL2793 - Jul 10, 14:25 UTCJul 10, 15:10 UTC45m
2026-07-10 DAL2793 - Jul 10, 12:30 UTCJul 10, 13:15 UTC45m
2026-07-10 DAL1044 CHA → ATL Jul 10, 09:45 UTCJul 10, 10:15 UTC30m
2026-07-10 DAL1044 CHA → ATL Jul 10, 09:45 UTCJul 10, 10:12 UTC27m
2026-07-10 DAL1059 ATL → CHA Jul 10, 03:50 UTCJul 10, 04:20 UTC30m
2026-07-10 DAL1093 - Jul 10, 01:15 UTCJul 10, 02:05 UTC50m
2026-07-10 DAL1093 MYR → ATL Jul 10, 01:07 UTCJul 10, 02:00 UTC53m
2026-07-09 DAL1093 - Jul 9, 23:35 UTCJul 10, 00:15 UTC40m
2026-07-09 DAL2823 - Jul 9, 21:45 UTCJul 9, 22:25 UTC40m
2026-07-09 DAL2823 ECP → ATL Jul 9, 21:41 UTCJul 9, 22:25 UTC44m
2026-07-09 DAL2823 - Jul 9, 18:00 UTCJul 9, 18:35 UTC35m
2026-07-09 DAL2754 - Jul 9, 15:15 UTCJul 9, 16:40 UTC1h 25m
2026-07-09 DAL2754 ATL → TUL Jul 9, 12:30 UTCJul 9, 14:00 UTC1h 30m
2026-07-09 DAL2556 - Jul 9, 10:35 UTCJul 9, 11:10 UTC35m
2026-07-09 DAL2556 HSV → ATL Jul 9, 10:31 UTCJul 9, 11:09 UTC38m
2026-07-08 DAL3171 ATL → HSV Jul 8, 23:05 UTCJul 8, 23:35 UTC30m
2026-07-08 DAL2094 - Jul 8, 19:25 UTCJul 8, 21:05 UTC1h 40m
2026-07-08 DAL2094 ATL → DSM Jul 8, 16:30 UTCJul 8, 18:15 UTC1h 45m
2026-07-08 DAL3090 ATL → STL Jul 8, 14:35 UTCJul 8, 15:25 UTC50m
2026-07-08 DAL3090 ATL → STL Jul 8, 12:20 UTCJul 8, 13:00 UTC40m
2026-07-08 DAL2184 - Jul 8, 10:10 UTCJul 8, 11:15 UTC1h 5m

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 N895AT page for operator, model, and routing details .

Mode-S AC57F9 frequently asked

What is Mode-S code AC57F9?
AC57F9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N895AT.
Where is Mode-S AC57F9 registered?
Mode-S code AC57F9 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 AC57F9 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC57F9, octal 53053771, decimal 11,294,713.
What flights does AC57F9 operate?
Mode-S AC57F9 has broadcast 20 distinct callsigns, including DAL2814, DAL2577, DAL2715, DAL3166, DAL2761.