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 Jul 26, 21:05 UTC
Flights observed
737
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:05 UTC

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
2026-07-26 DAL2763 JFK → FLL Jul 26, 19:50 UTCJul 26, 21:00 UTC1h 10m
2026-07-26 DAL2763 JFK → FLL Jul 26, 17:40 UTCJul 26, 18:55 UTC1h 15m
2026-07-26 DAL1374 PBI → MSP Jul 26, 15:40 UTCJul 26, 16:35 UTC55m
2026-07-26 DAL1374 PBI → MSP Jul 26, 15:38 UTCJul 26, 16:35 UTC57m
2026-07-26 DAL1374 PBI → MSP Jul 26, 13:35 UTCJul 26, 14:35 UTC1h 0m
2026-07-26 DAL2953 DCA → MCO Jul 26, 10:10 UTCJul 26, 11:15 UTC1h 5m
2026-07-26 DAL2435 ATL → MLB Jul 26, 01:57 UTCJul 26, 03:08 UTC1h 11m
2026-07-26 DAL2435 ATL → MLB Jul 26, 02:00 UTCJul 26, 03:10 UTC1h 10m
2026-07-25 DAL2862 ATL → OKC Jul 25, 21:10 UTCJul 25, 22:55 UTC1h 45m
2026-07-25 DAL2862 ATL → OKC Jul 25, 21:07 UTCJul 25, 22:56 UTC1h 49m
2026-07-25 DAL2862 ATL → OKC Jul 25, 18:00 UTCJul 25, 19:55 UTC1h 55m
2026-07-25 DAL3108 ATL → DAY Jul 25, 15:30 UTCJul 25, 16:40 UTC1h 10m
2026-07-25 DAL3108 ATL → DAY Jul 25, 13:10 UTCJul 25, 14:15 UTC1h 5m
2026-07-25 DAL1537 SEA → CVG Jul 25, 11:05 UTCJul 25, 11:40 UTC35m
2026-07-25 DAL1596 MSP → ATL Jul 25, 02:30 UTCJul 25, 03:10 UTC40m
2026-07-25 DAL2182 SFO → DTW Jul 25, 00:15 UTCJul 25, 00:55 UTC40m
2026-07-24 DAL2182 SFO → DTW Jul 24, 22:00 UTCJul 24, 22:45 UTC45m
2026-07-23 DAL2116 TPA → LGA Jul 23, 20:25 UTCJul 23, 21:10 UTC45m
2026-07-23 DAL2241 - Jul 23, 00:10 UTCJul 23, 00:45 UTC35m
2026-07-22 DAL2730 ATL → STL Jul 22, 21:00 UTCJul 22, 22:10 UTC1h 10m
2026-07-22 DAL2730 ATL → STL Jul 22, 18:50 UTCJul 22, 19:55 UTC1h 5m
2026-07-22 DAL3190 - Jul 22, 16:30 UTCJul 22, 17:10 UTC40m
2026-07-22 DAL3190 - Jul 22, 14:20 UTCJul 22, 15:05 UTC45m
2026-07-22 DAL516 LAX → JFK Jul 22, 11:10 UTCJul 22, 12:55 UTC1h 45m
2026-07-22 DAL1104 JFK → LAS Jul 22, 01:40 UTCJul 22, 03:20 UTC1h 40m
2026-07-21 DAL3088 ATL → DAY Jul 21, 22:45 UTCJul 22, 00:15 UTC1h 30m
2026-07-21 DAL3088 ATL → DAY Jul 21, 20:25 UTCJul 21, 21:50 UTC1h 25m
2026-07-21 DAL304 SNA → DTW Jul 21, 17:25 UTCJul 21, 19:20 UTC1h 55m
2026-07-21 DAL304 SNA → DTW Jul 21, 14:35 UTCJul 21, 16:10 UTC1h 35m
2026-07-21 DAL3156 ATL → STL Jul 21, 12:20 UTCJul 21, 13:00 UTC40m
2026-07-20 DAL720 MSP → MSO Jul 20, 23:10 UTCJul 20, 23:55 UTC45m
2026-07-20 DAL2763 JFK → FLL Jul 20, 20:40 UTCJul 20, 21:55 UTC1h 15m
2026-07-20 DAL2763 JFK → FLL Jul 20, 20:37 UTCJul 20, 21:52 UTC1h 15m
2026-07-20 DAL2763 JFK → FLL Jul 20, 18:25 UTCJul 20, 19:35 UTC1h 10m
2026-07-20 DAL2158 - Jul 20, 15:50 UTCJul 20, 16:15 UTC25m
2026-07-20 DAL2158 GSP → ATL Jul 20, 15:50 UTCJul 20, 16:23 UTC33m
2026-07-20 DAL2158 - Jul 20, 14:10 UTCJul 20, 14:45 UTC35m
2026-07-20 DAL2379 ATL → HPN Jul 20, 10:40 UTCJul 20, 12:20 UTC1h 40m
2026-07-20 DAL1616 ATL → HPN Jul 20, 01:25 UTCJul 20, 03:30 UTC2h 5m
2026-07-19 DAL1110 - Jul 19, 22:20 UTCJul 19, 23:15 UTC55m
2026-07-19 DAL1110 - Jul 19, 20:25 UTCJul 19, 21:15 UTC50m
2026-07-19 DAL2048 - Jul 19, 16:40 UTCJul 19, 17:45 UTC1h 5m
2026-07-19 DAL2048 - Jul 19, 14:35 UTCJul 19, 15:15 UTC40m
2026-07-19 DAL2853 - Jul 19, 12:10 UTCJul 19, 12:40 UTC30m
2026-07-19 DAL2853 AVL → ATL Jul 19, 12:05 UTCJul 19, 12:37 UTC32m
2026-07-19 DAL3071 ATL → AVL Jul 19, 02:20 UTCJul 19, 02:50 UTC30m
2026-07-18 DAL2086 DSM → ATL Jul 18, 23:20 UTCJul 19, 01:00 UTC1h 40m
2026-07-18 DAL2086 DSM → ATL Jul 18, 20:30 UTCJul 18, 22:10 UTC1h 40m
2026-07-18 DAL3198 - Jul 18, 16:45 UTCJul 18, 17:30 UTC45m
2026-07-18 DAL3198 - Jul 18, 15:00 UTCJul 18, 15:40 UTC40m

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 Jul 26, 21:05 UTC.
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.