Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACC1F3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N921AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
ACC1F3
Octal
53140763
Decimal
11,321,843
Country
US
Tail
N921AT
Type
B712
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
709
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S ACC1F3.

Country allocation

The ICAO 24-bit address ACC1F3 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
DAL3143 Delta Air Lines 20 2026-07-26
DAL2718 Delta Air Lines 14 2026-07-24
DAL3133 Delta Air Lines 9 2026-07-25
DAL3116 Delta Air Lines 9 2026-07-26
DAL3051 - 9 2026-07-12
DAL3151 - 8 2026-06-19
DAL1290 - 8 2026-06-21
DAL3089 Delta Air Lines 7 2026-06-12
DAL2763 - 7 2026-06-28
DAL2220 - 7 2026-07-10
DAL1716 Delta Air Lines 7 2026-06-08
DAL940 Delta Air Lines 6 2026-05-28
DAL376 - 6 2026-07-20
DAL3127 - 6 2026-07-13
DAL3108 - 6 2026-07-14
DAL2837 Delta Air Lines 6 2026-06-10
DAL2741 Delta Air Lines 6 2026-06-22
DAL2725 Delta Air Lines 6 2026-05-29
DAL2417 - 6 2026-07-07
DAL2182 - 6 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL3143 ATL → LEX Jul 26, 22:00 UTCJul 26, 22:45 UTC45m
2026-07-26 DAL3143 ATL → LEX Jul 26, 20:05 UTCJul 26, 20:55 UTC50m
2026-07-26 DAL1737 PHL → MSP Jul 26, 17:20 UTCJul 26, 17:55 UTC35m
2026-07-26 DAL1737 PHL → MSP Jul 26, 17:18 UTCJul 26, 17:45 UTC27m
2026-07-26 DAL1737 PHL → MSP Jul 26, 15:40 UTCJul 26, 16:05 UTC25m
2026-07-26 DAL2250 RDU → ATL Jul 26, 13:45 UTCJul 26, 14:25 UTC40m
2026-07-26 DAL2250 RDU → ATL Jul 26, 13:43 UTCJul 26, 14:20 UTC37m
2026-07-26 DAL2250 RDU → ATL Jul 26, 11:30 UTCJul 26, 12:15 UTC45m
2026-07-26 DAL2712 AVL → ATL Jul 26, 09:40 UTCJul 26, 10:05 UTC25m
2026-07-26 DAL2712 AVL → ATL Jul 26, 09:35 UTCJul 26, 10:07 UTC32m
2026-07-26 DAL3116 SFO → SEA Jul 26, 02:10 UTCJul 26, 02:35 UTC25m
2026-07-25 DAL3133 GNV → ATL Jul 25, 21:40 UTCJul 25, 22:35 UTC55m
2026-07-25 DAL3133 GNV → ATL Jul 25, 21:35 UTCJul 25, 22:26 UTC51m
2026-07-25 DAL3133 GNV → ATL Jul 25, 19:30 UTCJul 25, 20:15 UTC45m
2026-07-25 DAL1725 HNL → DTW Jul 25, 17:35 UTCJul 25, 18:05 UTC30m
2026-07-25 DAL1725 HNL → DTW Jul 25, 15:30 UTCJul 25, 16:00 UTC30m
2026-07-25 DAL3183 JAN → ATL Jul 25, 13:15 UTCJul 25, 14:00 UTC45m
2026-07-25 DAL3183 JAN → ATL Jul 25, 12:58 UTCJul 25, 13:55 UTC57m
2026-07-25 DAL3117 ATL → JAN Jul 25, 04:25 UTCJul 25, 05:05 UTC40m
2026-07-25 DAL2771 LGA → TPA Jul 25, 01:10 UTCJul 25, 02:30 UTC1h 20m
2026-07-25 DAL2771 LGA → TPA Jul 25, 01:07 UTCJul 25, 02:24 UTC1h 17m
2026-07-24 DAL2771 LGA → TPA Jul 24, 23:00 UTCJul 25, 00:20 UTC1h 20m
2026-07-24 DAL2718 ATL → BDL Jul 24, 20:45 UTCJul 24, 21:50 UTC1h 5m
2026-07-24 DAL2718 ATL → BDL Jul 24, 20:37 UTCJul 24, 21:42 UTC1h 5m
2026-07-24 DAL2718 ATL → BDL Jul 24, 17:05 UTCJul 24, 17:55 UTC50m
2026-07-24 DAL3033 - Jul 24, 14:50 UTCJul 24, 15:55 UTC1h 5m
2026-07-24 DAL3033 - Jul 24, 12:30 UTCJul 24, 13:30 UTC1h 0m
2026-07-24 DAL1537 SEA → CVG Jul 24, 10:10 UTCJul 24, 10:50 UTC40m
2026-07-24 DAL1596 MSP → ATL Jul 24, 01:55 UTCJul 24, 02:35 UTC40m
2026-07-23 DAL3063 RIC → MSP Jul 23, 23:25 UTCJul 24, 00:20 UTC55m
2026-07-23 DAL3063 RIC → MSP Jul 23, 21:20 UTCJul 23, 22:10 UTC50m
2026-07-23 DAL3096 ATL → LEX Jul 23, 19:20 UTCJul 23, 20:20 UTC1h 0m
2026-07-23 DAL3096 ATL → LEX Jul 23, 17:25 UTCJul 23, 18:10 UTC45m
2026-07-23 DAL3036 HSV → ATL Jul 23, 13:50 UTCJul 23, 14:20 UTC30m
2026-07-23 DAL3036 HSV → ATL Jul 23, 12:15 UTCJul 23, 12:45 UTC30m
2026-07-23 DAL1537 SEA → CVG Jul 23, 10:05 UTCJul 23, 10:40 UTC35m
2026-07-23 DAL1596 MSP → ATL Jul 23, 01:35 UTCJul 23, 02:10 UTC35m
2026-07-22 DAL1625 JFK → MCO Jul 22, 12:30 UTCJul 22, 13:25 UTC55m
2026-07-22 DAL2501 LGA → MSY Jul 22, 03:50 UTCJul 22, 04:50 UTC1h 0m
2026-07-21 DAL2086 DSM → ATL Jul 21, 23:45 UTCJul 22, 01:30 UTC1h 45m
2026-07-21 DAL2086 DSM → ATL Jul 21, 21:00 UTCJul 21, 22:45 UTC1h 45m
2026-07-21 DAL3141 - Jul 21, 19:15 UTCJul 21, 19:45 UTC30m
2026-07-21 DAL3141 ATL → CHA Jul 21, 17:25 UTCJul 21, 17:50 UTC25m
2026-07-21 DAL3199 - Jul 21, 15:25 UTCJul 21, 16:20 UTC55m
2026-07-21 DAL3199 - Jul 21, 13:30 UTCJul 21, 14:25 UTC55m
2026-07-21 DAL3181 - Jul 21, 10:35 UTCJul 21, 11:20 UTC45m
2026-07-21 DAL3181 GNV → ATL Jul 21, 10:29 UTCJul 21, 11:17 UTC48m
2026-07-21 DAL3079 ATL → GNV Jul 21, 02:06 UTCJul 21, 02:53 UTC47m
2026-07-21 DAL3079 ATL → GNV Jul 21, 02:10 UTCJul 21, 02:55 UTC45m
2026-07-20 DAL2857 MSP → ORD Jul 20, 23:35 UTCJul 21, 00:55 UTC1h 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 N921AT page for operator, model, and routing details .

Mode-S ACC1F3 frequently asked

What is Mode-S code ACC1F3?
ACC1F3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N921AT.
Where is Mode-S ACC1F3 registered?
Mode-S code ACC1F3 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 ACC1F3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACC1F3, octal 53140763, decimal 11,321,843.
What flights does ACC1F3 operate?
Mode-S ACC1F3 has broadcast 20 distinct callsigns, including DAL3143, DAL2718, DAL3133, DAL3116, DAL3051.