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 2h ago
Flights observed
428
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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
DAL2243 - 8 2026-07-03
DAL2147 Delta Air Lines 8 2026-05-21
DAL1454 Delta Air Lines 8 2026-05-12
DAL2578 Delta Air Lines 7 2026-05-14
DAL2176 - 7 2026-07-09
DAL2568 - 6 2026-07-09
DAL2476 Delta Air Lines 6 2026-05-12
DAL2337 - 6 2026-06-20
DAL2007 Delta Air Lines 6 2026-06-25
DAL1072 Delta Air Lines 6 2026-05-01
DAL2975 Delta Air Lines 5 2026-06-18
DAL2820 Delta Air Lines 5 2026-06-24
DAL2641 - 5 2026-07-04
DAL2615 - 5 2026-06-27
DAL1558 Delta Air Lines 5 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL2524 MCO → AUS Jul 13, 23:05 UTCJul 14, 01:35 UTC2h 30m
2026-07-13 DAL1007 - Jul 13, 18:05 UTCJul 13, 19:50 UTC1h 45m
2026-07-13 DAL1007 DCA → MCO Jul 13, 18:01 UTCJul 13, 19:48 UTC1h 47m
2026-07-13 DAL1003 MCO → DCA Jul 13, 14:30 UTCJul 13, 16:10 UTC1h 40m
2026-07-13 DAL1003 MCO → DCA Jul 13, 14:26 UTCJul 13, 16:09 UTC1h 43m
2026-07-13 DAL1003 DCA → MCO Jul 13, 11:10 UTCJul 13, 13:00 UTC1h 50m
2026-07-13 DAL2073 - Jul 13, 02:05 UTCJul 13, 03:05 UTC1h 0m
2026-07-12 DAL2316 BNA → DTW Jul 12, 23:25 UTCJul 13, 00:40 UTC1h 15m
2026-07-12 DAL2316 - Jul 12, 20:15 UTCJul 12, 21:25 UTC1h 10m
2026-07-12 DAL2746 - Jul 12, 16:30 UTCJul 12, 18:30 UTC2h 0m
2026-07-12 DAL2746 - Jul 12, 12:50 UTCJul 12, 15:10 UTC2h 20m
2026-07-12 DAL1253 JFK → DTW Jul 12, 01:20 UTCJul 12, 02:40 UTC1h 20m
2026-07-11 DAL2934 - Jul 11, 21:10 UTCJul 11, 22:20 UTC1h 10m
2026-07-11 DAL2934 DTW → JFK Jul 11, 21:08 UTCJul 11, 22:18 UTC1h 10m
2026-07-11 DAL1043 - Jul 11, 17:40 UTCJul 11, 19:55 UTC2h 15m
2026-07-11 DAL1043 - Jul 11, 13:25 UTCJul 11, 15:55 UTC2h 30m
2026-07-11 DAL1529 - Jul 11, 01:15 UTCJul 11, 03:40 UTC2h 25m
2026-07-10 DAL1529 - Jul 10, 21:20 UTCJul 11, 00:05 UTC2h 45m
2026-07-10 DAL788 - Jul 10, 16:50 UTCJul 10, 19:20 UTC2h 30m
2026-07-10 DAL788 - Jul 10, 12:40 UTCJul 10, 15:15 UTC2h 35m
2026-07-10 DAL1752 ROC → DTW Jul 10, 10:25 UTCJul 10, 11:15 UTC50m
2026-07-10 DAL3148 - Jul 10, 02:30 UTCJul 10, 03:15 UTC45m
2026-07-09 DAL2598 - Jul 9, 21:10 UTCJul 10, 00:00 UTC2h 50m
2026-07-09 DAL2598 SAT → DTW Jul 9, 21:07 UTCJul 9, 23:51 UTC2h 44m
2026-07-09 DAL2568 - Jul 9, 17:00 UTCJul 9, 19:35 UTC2h 35m
2026-07-09 DAL2002 - Jul 9, 13:40 UTCJul 9, 15:40 UTC2h 0m
2026-07-09 DAL2002 DEN → LAX Jul 9, 13:40 UTCJul 9, 15:32 UTC1h 52m
2026-07-09 DAL1729 - Jul 9, 05:40 UTCJul 9, 07:35 UTC1h 55m
2026-07-09 DAL1729 LAX → DEN Jul 9, 05:38 UTCJul 9, 07:28 UTC1h 50m
2026-07-09 DAL2176 DEN → LAX Jul 9, 02:20 UTCJul 9, 04:25 UTC2h 5m
2026-07-08 DAL2176 - Jul 8, 23:15 UTCJul 9, 01:00 UTC1h 45m
2026-07-08 DAL2148 - Jul 8, 18:35 UTCJul 8, 20:30 UTC1h 55m
2026-07-08 DAL2148 DEN → LAX Jul 8, 18:34 UTCJul 8, 20:26 UTC1h 52m
2026-07-08 DAL2148 - Jul 8, 15:05 UTCJul 8, 16:55 UTC1h 50m
2026-07-08 DAL1584 AUS → ATL Jul 8, 01:45 UTCJul 8, 04:20 UTC2h 35m
2026-07-07 DAL1612 - Jul 7, 20:50 UTCJul 7, 23:20 UTC2h 30m
2026-07-07 DAL1612 DTW → AUS Jul 7, 20:48 UTCJul 7, 23:25 UTC2h 37m
2026-07-07 DAL2163 MSP → SRQ Jul 7, 17:25 UTCJul 7, 18:50 UTC1h 25m
2026-07-07 DAL2163 MSP → SRQ Jul 7, 14:40 UTCJul 7, 15:55 UTC1h 15m
2026-07-07 DAL1040 AUS → DTW Jul 7, 10:25 UTCJul 7, 13:00 UTC2h 35m
2026-07-07 DAL1077 SFO → AUS Jul 7, 01:40 UTCJul 7, 04:40 UTC3h 0m
2026-07-07 DAL1077 SFO → AUS Jul 7, 01:39 UTCJul 7, 04:42 UTC3h 3m
2026-07-06 DAL1077 AUS → SFO Jul 6, 20:55 UTCJul 7, 00:20 UTC3h 25m
2026-07-06 DAL487 JFK → SDQ Jul 6, 17:10 UTCJul 6, 19:25 UTC2h 15m
2026-07-06 DAL487 JFK → SDQ Jul 6, 13:25 UTCJul 6, 15:30 UTC2h 5m
2026-07-05 DAL622 - Jul 5, 23:10 UTCJul 6, 01:45 UTC2h 35m
2026-07-05 DAL2148 DEN → LAX Jul 5, 18:40 UTCJul 5, 20:40 UTC2h 0m
2026-07-05 DAL2148 - Jul 5, 15:05 UTCJul 5, 16:55 UTC1h 50m
2026-07-05 DAL2742 - Jul 5, 00:00 UTCJul 5, 01:00 UTC1h 0m
2026-07-04 DAL2742 - Jul 4, 21:55 UTCJul 4, 22:40 UTC45m

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 2h ago.
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.