Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A022C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N108DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A022C4
Octal
50021304
Decimal
10,494,660
Country
US
Tail
N108DN
Type
A321
No current signal · last broadcast Jul 26, 22:35 UTC
Flights observed
568
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:35 UTC

Last known position

Most recent position reported by Mode-S A022C4.

Country allocation

The ICAO 24-bit address A022C4 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
DAL1882 - 11 2026-07-12
DAL513 - 8 2026-07-21
DAL1349 Delta Air Lines 8 2026-06-30
DAL840 - 7 2026-07-16
DAL369 - 7 2026-07-14
DAL2965 Delta Air Lines 7 2026-04-23
DAL2561 - 7 2026-07-19
DAL990 - 6 2026-07-21
DAL843 Delta Air Lines 6 2026-07-23
DAL2397 Delta Air Lines 6 2026-07-23
DAL2300 Delta Air Lines 6 2026-04-25
DAL1511 Delta Air Lines 6 2026-05-22
DAL961 Delta Air Lines 5 2026-05-05
DAL957 Delta Air Lines 5 2026-06-15
DAL519 Delta Air Lines 5 2026-06-04
DAL2927 - 5 2026-07-08
DAL2836 - 5 2026-07-15
DAL2702 - 5 2026-07-18
DAL2648 Delta Air Lines 5 2026-07-24
DAL2589 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2887 MYR → ATL Jul 26, 19:40 UTCJul 26, 22:15 UTC2h 35m
2026-07-26 DAL1580 BOS → MCO Jul 26, 15:35 UTCJul 26, 17:55 UTC2h 20m
2026-07-26 DAL1580 BOS → MCO Jul 26, 15:31 UTCJul 26, 18:07 UTC2h 36m
2026-07-26 DAL1580 BOS → MCO Jul 26, 11:25 UTCJul 26, 14:00 UTC2h 35m
2026-07-26 DAL1187 MCO → BOS Jul 26, 02:10 UTCJul 26, 03:40 UTC1h 30m
2026-07-25 DAL337 DTW → ORD Jul 25, 22:00 UTCJul 26, 00:20 UTC2h 20m
2026-07-25 DAL337 DTW → ORD Jul 25, 18:20 UTCJul 25, 20:25 UTC2h 5m
2026-07-25 DAL864 SEA → ATL Jul 25, 13:25 UTCJul 25, 16:50 UTC3h 25m
2026-07-24 DAL766 SFO → DTW Jul 24, 20:50 UTCJul 25, 00:30 UTC3h 40m
2026-07-24 DAL2222 YUL → ATL Jul 24, 17:25 UTCJul 24, 19:00 UTC1h 35m
2026-07-24 DAL2648 DTW → BOS Jul 24, 14:20 UTCJul 24, 15:50 UTC1h 30m
2026-07-24 DAL1461 LGA → FLL Jul 24, 11:15 UTCJul 24, 12:30 UTC1h 15m
2026-07-24 DAL2647 BOS → LAX Jul 24, 01:25 UTCJul 24, 04:40 UTC3h 15m
2026-07-23 DAL843 SFO → DTW Jul 23, 20:12 UTCJul 23, 23:57 UTC3h 45m
2026-07-23 DAL843 SFO → DTW Jul 23, 20:15 UTCJul 24, 00:00 UTC3h 45m
2026-07-23 DAL2397 ATL → ROC Jul 23, 16:25 UTCJul 23, 18:15 UTC1h 50m
2026-07-23 DAL2397 ATL → ROC Jul 23, 12:50 UTCJul 23, 14:55 UTC2h 5m
2026-07-23 DAL2375 LGA → MCO Jul 23, 09:25 UTCJul 23, 10:50 UTC1h 25m
2026-07-22 DAL2172 JFK → MSP Jul 22, 22:05 UTCJul 23, 01:50 UTC3h 45m
2026-07-22 DAL2172 JFK → MSP Jul 22, 22:02 UTCJul 23, 01:46 UTC3h 44m
2026-07-22 DAL2125 MSP → SAN Jul 22, 17:20 UTCJul 22, 20:35 UTC3h 15m
2026-07-22 DAL2960 PSC → MSP Jul 22, 12:55 UTCJul 22, 15:00 UTC2h 5m
2026-07-21 DAL990 LGA → ATL Jul 21, 17:00 UTCJul 21, 19:00 UTC2h 0m
2026-07-21 DAL513 ATL → LGA Jul 21, 12:45 UTCJul 21, 14:25 UTC1h 40m
2026-07-21 DAL513 ATL → LGA Jul 21, 12:42 UTCJul 21, 14:28 UTC1h 46m
2026-07-21 DAL2722 SFO → ATL Jul 21, 09:40 UTCJul 21, 10:25 UTC45m
2026-07-21 DAL2276 SLC → SFO Jul 21, 04:00 UTCJul 21, 04:45 UTC45m
2026-07-21 DAL2276 SLC → SFO Jul 21, 04:00 UTCJul 21, 04:47 UTC47m
2026-07-20 DAL540 BOS → TPA Jul 20, 22:15 UTCJul 21, 02:30 UTC4h 14m
2026-07-20 DAL540 BOS → TPA Jul 20, 16:30 UTCJul 20, 20:15 UTC3h 45m
2026-07-20 DAL1505 SLC → SAT Jul 20, 13:20 UTCJul 20, 14:20 UTC1h 0m
2026-07-19 DAL2561 LGA → MCO Jul 19, 22:55 UTCJul 20, 01:10 UTC2h 15m
2026-07-19 DAL1362 RDU → LGA Jul 19, 19:15 UTCJul 19, 21:10 UTC1h 55m
2026-07-18 DAL2019 JFK → MCO Jul 18, 14:35 UTCJul 18, 16:40 UTC2h 5m
2026-07-18 DAL2702 MCO → JFK Jul 18, 10:05 UTCJul 18, 12:20 UTC2h 15m
2026-07-18 DAL2702 MCO → JFK Jul 18, 10:06 UTCJul 18, 12:11 UTC2h 5m
2026-07-18 DAL1562 ATL → MCO Jul 18, 04:25 UTCJul 18, 05:25 UTC1h 0m
2026-07-17 DAL715 LAX → ATL Jul 17, 21:30 UTCJul 18, 01:34 UTC4h 5m
2026-07-17 DAL326 ATL → LAX Jul 17, 15:44 UTCJul 17, 19:35 UTC3h 50m
2026-07-17 DAL1530 - Jul 17, 13:00 UTCJul 17, 13:50 UTC50m
2026-07-17 DAL1530 RDU → ATL Jul 17, 12:57 UTCJul 17, 13:51 UTC54m
2026-07-17 DAL2938 ATL → RDU Jul 17, 04:20 UTCJul 17, 05:20 UTC1h 0m
2026-07-16 DAL840 DEN → ATL Jul 16, 23:44 UTCJul 17, 02:20 UTC2h 35m
2026-07-16 DAL840 DEN → ATL Jul 16, 23:43 UTCJul 17, 02:16 UTC2h 33m
2026-07-16 DAL1025 MSP → DEN Jul 16, 20:35 UTCJul 16, 22:05 UTC1h 30m
2026-07-16 DAL2849 DEN → MSP Jul 16, 17:25 UTCJul 16, 18:55 UTC1h 30m
2026-07-16 DAL2849 MSP → DEN Jul 16, 14:17 UTCJul 16, 15:51 UTC1h 34m
2026-07-16 DAL2849 MSP → DEN Jul 16, 14:20 UTCJul 16, 15:55 UTC1h 35m
2026-07-16 DAL2538 - Jul 16, 10:20 UTCJul 16, 12:40 UTC2h 20m
2026-07-16 DAL2538 RDU → MSP Jul 16, 10:17 UTCJul 16, 12:35 UTC2h 18m

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 N108DN page for operator, model, and routing details .

Mode-S A022C4 frequently asked

What is Mode-S code A022C4?
A022C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N108DN.
Where is Mode-S A022C4 registered?
Mode-S code A022C4 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 A022C4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A022C4, octal 50021304, decimal 10,494,660.
What flights does A022C4 operate?
Mode-S A022C4 has broadcast 20 distinct callsigns, including DAL1882, DAL513, DAL1349, DAL840, DAL369.