Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3FFFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N357NB · AIRBUS A-319 · operated by DELTA AIR LINES INC

Hex
A3FFFC
Octal
50777774
Decimal
10,747,900
Country
US
Tail
N357NB
Type
A319
No current signal · last broadcast Jul 26, 12:35 UTC
Flights observed
496
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 12:35 UTC

Last known position

Most recent position reported by Mode-S A3FFFC.

Country allocation

The ICAO 24-bit address A3FFFC 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
DAL2168 Delta Air Lines 14 2026-05-20
DAL2766 - 13 2026-07-03
DAL2459 - 9 2026-06-18
DAL2314 Delta Air Lines 9 2026-04-28
DAL2148 - 9 2026-07-08
DAL2476 - 8 2026-07-18
DAL2243 - 8 2026-07-03
DAL2147 Delta Air Lines 8 2026-05-21
DAL2007 Delta Air Lines 8 2026-07-22
DAL1454 Delta Air Lines 8 2026-05-12
DAL2578 Delta Air Lines 7 2026-05-14
DAL2176 - 7 2026-07-09
DAL487 - 6 2026-07-14
DAL2568 - 6 2026-07-09
DAL2337 - 6 2026-06-20
DAL1279 Delta Air Lines 6 2026-07-25
DAL1077 - 6 2026-07-15
DAL1072 Delta Air Lines 6 2026-05-01
DAL1018 Delta Air Lines 6 2026-07-25
DAL2975 Delta Air Lines 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1054 ALB → ATL Jul 26, 11:05 UTCJul 26, 12:25 UTC1h 20m
2026-07-26 DAL1275 TPA → RDU Jul 26, 01:25 UTCJul 26, 02:45 UTC1h 20m
2026-07-25 DAL1275 TPA → RDU Jul 25, 22:55 UTCJul 26, 00:30 UTC1h 35m
2026-07-25 DAL1018 MSY → ATL Jul 25, 20:15 UTCJul 25, 21:55 UTC1h 40m
2026-07-25 DAL1018 MSY → ATL Jul 25, 20:14 UTCJul 25, 22:09 UTC1h 55m
2026-07-25 DAL1038 DTW → LGA Jul 25, 16:05 UTCJul 25, 17:40 UTC1h 35m
2026-07-25 DAL1279 BOS → PBI Jul 25, 13:10 UTCJul 25, 14:40 UTC1h 30m
2026-07-25 DAL1279 BOS → PBI Jul 25, 10:35 UTCJul 25, 11:55 UTC1h 20m
2026-07-25 DAL1275 TPA → RDU Jul 25, 01:25 UTCJul 25, 03:05 UTC1h 40m
2026-07-25 DAL1275 TPA → RDU Jul 25, 01:23 UTCJul 25, 03:02 UTC1h 39m
2026-07-24 DAL1275 TPA → RDU Jul 24, 22:10 UTCJul 24, 23:40 UTC1h 30m
2026-07-24 DAL1018 MSY → ATL Jul 24, 19:05 UTCJul 24, 20:45 UTC1h 40m
2026-07-24 DAL1018 MSY → ATL Jul 24, 19:04 UTCJul 24, 20:39 UTC1h 35m
2026-07-24 DAL1038 DTW → LGA Jul 24, 16:10 UTCJul 24, 17:45 UTC1h 35m
2026-07-24 DAL1038 DTW → LGA Jul 24, 16:08 UTCJul 24, 17:40 UTC1h 32m
2026-07-24 DAL1279 BOS → PBI Jul 24, 13:15 UTCJul 24, 14:45 UTC1h 30m
2026-07-24 DAL1279 BOS → PBI Jul 24, 10:35 UTCJul 24, 11:55 UTC1h 20m
2026-07-23 DAL2992 SDF → ATL Jul 23, 22:50 UTCJul 24, 00:25 UTC1h 35m
2026-07-23 DAL2576 TPA → BOS Jul 23, 18:55 UTCJul 23, 21:15 UTC2h 20m
2026-07-23 DAL2576 TPA → BOS Jul 23, 18:51 UTCJul 23, 21:07 UTC2h 16m
2026-07-23 DAL2983 MSP → DCA Jul 23, 15:40 UTCJul 23, 17:25 UTC1h 45m
2026-07-23 DAL2983 MSP → DCA Jul 23, 15:35 UTCJul 23, 17:25 UTC1h 50m
2026-07-23 DAL1006 SLC → LAX Jul 23, 13:30 UTCJul 23, 14:05 UTC35m
2026-07-23 DAL1694 SLC → AUS Jul 23, 04:00 UTCJul 23, 04:35 UTC35m
2026-07-22 DAL2007 SLC → MSY Jul 22, 15:50 UTCJul 22, 18:25 UTC2h 35m
2026-07-22 DAL2007 SLC → MSY Jul 22, 12:15 UTCJul 22, 14:20 UTC2h 5m
2026-07-21 DAL2888 - Jul 21, 15:45 UTCJul 21, 17:55 UTC2h 10m
2026-07-21 DAL890 CLT → MSP Jul 21, 12:20 UTCJul 21, 13:55 UTC1h 35m
2026-07-21 DAL890 CLT → MSP Jul 21, 12:17 UTCJul 21, 13:50 UTC1h 33m
2026-07-21 DAL817 DEN → ATL Jul 21, 00:15 UTCJul 21, 02:00 UTC1h 45m
2026-07-21 DAL817 DEN → ATL Jul 21, 00:12 UTCJul 21, 02:01 UTC1h 49m
2026-07-20 DAL2816 - Jul 20, 20:55 UTCJul 20, 22:45 UTC1h 50m
2026-07-20 DAL2816 BOS → ORD Jul 20, 16:30 UTCJul 20, 18:45 UTC2h 15m
2026-07-20 DAL1022 ATL → DTW Jul 20, 13:30 UTCJul 20, 15:05 UTC1h 35m
2026-07-20 DAL1022 ATL → DTW Jul 20, 13:29 UTCJul 20, 15:01 UTC1h 32m
2026-07-20 DAL2066 - Jul 20, 11:15 UTCJul 20, 12:10 UTC55m
2026-07-20 DAL2066 - Jul 20, 10:35 UTCJul 20, 11:10 UTC35m
2026-07-19 DAL9849 JFK → LAX Jul 19, 23:25 UTCJul 20, 01:35 UTC2h 10m
2026-07-19 DAL2316 DTW → MSN Jul 19, 20:35 UTCJul 19, 21:50 UTC1h 15m
2026-07-19 DAL2265 RDU → DTW Jul 19, 17:30 UTCJul 19, 18:50 UTC1h 20m
2026-07-19 DAL2164 - Jul 19, 14:30 UTCJul 19, 15:40 UTC1h 10m
2026-07-19 DAL2497 - Jul 19, 10:30 UTCJul 19, 13:05 UTC2h 35m
2026-07-19 DAL1365 PHL → DTW Jul 19, 00:30 UTCJul 19, 03:20 UTC2h 50m
2026-07-18 DAL2476 DCA → DTW Jul 18, 16:50 UTCJul 18, 18:10 UTC1h 20m
2026-07-18 DAL2476 - Jul 18, 14:10 UTCJul 18, 15:15 UTC1h 5m
2026-07-18 DAL2183 DFW → DTW Jul 18, 10:25 UTCJul 18, 12:40 UTC2h 15m
2026-07-18 DAL1207 DTW → DFW Jul 18, 01:45 UTCJul 18, 04:00 UTC2h 16m
2026-07-17 DAL2358 RSW → BOS Jul 17, 23:45 UTCJul 18, 00:39 UTC55m
2026-07-17 DAL2358 RSW → BOS Jul 17, 21:15 UTCJul 17, 22:00 UTC45m
2026-07-17 DAL2265 RDU → DTW Jul 17, 17:05 UTCJul 17, 18:19 UTC1h 15m

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 N357NB page for operator, model, and routing details .

Mode-S A3FFFC frequently asked

What is Mode-S code A3FFFC?
A3FFFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N357NB.
Where is Mode-S A3FFFC registered?
Mode-S code A3FFFC 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 A3FFFC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3FFFC, octal 50777774, decimal 10,747,900.
What flights does A3FFFC operate?
Mode-S A3FFFC has broadcast 20 distinct callsigns, including DAL2168, DAL2766, DAL2459, DAL2314, DAL2148.