Apparatus

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sensors Mode-S transponder

A49D22

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N397DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A49D22
Octal
51116442
Decimal
10,788,130
Country
US
Tail
N397DN
Type
A321
Broadcasting now · callsign DAL975 · 2,300 ft
Flights observed
529
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Current position

A49D22 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A49D22 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
DAL1580 - 16 2026-07-24
DAL2887 Delta Air Lines 13 2026-07-24
DAL2321 - 9 2026-06-27
DAL888 Delta Air Lines 7 2026-07-25
DAL2852 - 7 2026-07-19
DAL582 Delta Air Lines 6 2026-07-20
DAL1791 - 6 2026-06-30
DAL1177 - 6 2026-07-09
DAL308 - 5 2026-07-17
DAL2694 Delta Air Lines 5 2026-05-28
DAL1659 - 5 2026-07-18
DAL1455 - 5 2026-06-13
DAL1413 - 5 2026-07-12
DAL1349 Delta Air Lines 5 2026-04-13
DAL1164 - 5 2026-07-17
DAL994 - 4 2026-06-27
DAL975 Delta Air Lines 4 2026-04-28
DAL706 Delta Air Lines 4 2026-06-11
DAL581 - 4 2026-07-20
DAL525 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1025 BOS → RSW Jul 26, 19:40 UTCJul 26, 21:20 UTC1h 40m
2026-07-26 DAL2409 JFK → DFW Jul 26, 15:20 UTCJul 26, 17:50 UTC2h 30m
2026-07-26 DAL2133 ATL → RIC Jul 26, 11:10 UTCJul 26, 13:35 UTC2h 25m
2026-07-25 DAL2196 LGA → BOS Jul 25, 20:35 UTCJul 25, 23:30 UTC2h 55m
2026-07-25 DAL1399 PHL → SLC Jul 25, 16:00 UTCJul 25, 18:50 UTC2h 50m
2026-07-25 DAL1399 PHL → SLC Jul 25, 11:25 UTCJul 25, 14:30 UTC3h 5m
2026-07-25 DAL888 ATL → PDX Jul 25, 00:42 UTCJul 25, 03:13 UTC2h 31m
2026-07-25 DAL888 ATL → PDX Jul 25, 00:45 UTCJul 25, 03:20 UTC2h 35m
2026-07-24 DAL2887 MYR → ATL Jul 24, 19:55 UTCJul 24, 22:25 UTC2h 30m
2026-07-24 DAL1580 MCO → BOS Jul 24, 15:25 UTCJul 24, 17:55 UTC2h 30m
2026-07-24 DAL1580 BOS → MCO Jul 24, 11:30 UTCJul 24, 14:10 UTC2h 40m
2026-07-24 DAL888 ATL → PDX Jul 24, 00:00 UTCJul 24, 02:35 UTC2h 35m
2026-07-23 DAL888 ATL → PDX Jul 23, 23:58 UTCJul 24, 02:31 UTC2h 33m
2026-07-23 DAL2887 MYR → ATL Jul 23, 19:50 UTCJul 23, 22:53 UTC3h 3m
2026-07-23 DAL2887 MYR → ATL Jul 23, 19:50 UTCJul 23, 22:50 UTC3h 0m
2026-07-23 DAL1580 - Jul 23, 16:30 UTCJul 23, 17:50 UTC1h 20m
2026-07-23 DAL1580 - Jul 23, 15:25 UTCJul 23, 16:25 UTC1h 0m
2026-07-23 DAL1580 BOS → MCO Jul 23, 11:20 UTCJul 23, 14:00 UTC2h 40m
2026-07-23 DAL1187 MCO → BOS Jul 23, 02:30 UTCJul 23, 03:50 UTC1h 20m
2026-07-22 DAL337 DTW → ORD Jul 22, 22:20 UTCJul 23, 00:15 UTC1h 55m
2026-07-22 DAL337 DTW → ORD Jul 22, 22:00 UTCJul 22, 22:15 UTC15m
2026-07-22 DAL337 DTW → ORD Jul 22, 18:20 UTCJul 22, 20:25 UTC2h 5m
2026-07-22 DAL947 - Jul 22, 13:15 UTCJul 22, 16:30 UTC3h 15m
2026-07-22 DAL2076 BOS → BNA Jul 22, 01:15 UTCJul 22, 04:55 UTC3h 40m
2026-07-21 DAL2067 LGA → BOS Jul 21, 21:50 UTCJul 21, 23:30 UTC1h 40m
2026-07-21 DAL2067 LGA → BOS Jul 21, 21:46 UTCJul 21, 23:23 UTC1h 37m
2026-07-21 DAL3024 JAX → ATL Jul 21, 19:04 UTCJul 21, 19:46 UTC42m
2026-07-21 DAL3024 - Jul 21, 17:10 UTCJul 21, 17:55 UTC45m
2026-07-21 DAL992 SEA → MSP Jul 21, 13:55 UTCJul 21, 15:45 UTC1h 50m
2026-07-21 DAL520 ATL → LGA Jul 21, 01:30 UTCJul 21, 03:20 UTC1h 50m
2026-07-21 DAL520 ATL → LGA Jul 21, 01:25 UTCJul 21, 03:18 UTC1h 53m
2026-07-20 DAL581 AUA → ATL Jul 20, 19:40 UTCJul 20, 23:35 UTC3h 55m
2026-07-20 DAL582 ATL → AUA Jul 20, 14:20 UTCJul 20, 17:55 UTC3h 35m
2026-07-20 DAL550 LGA → ATL Jul 20, 10:20 UTCJul 20, 12:05 UTC1h 45m
2026-07-20 DAL2603 - Jul 20, 03:00 UTCJul 20, 04:10 UTC1h 10m
2026-07-19 DAL2559 LGA → FLL Jul 19, 22:30 UTCJul 20, 00:50 UTC2h 20m
2026-07-19 DAL1225 MCO → LGA Jul 19, 18:45 UTCJul 19, 21:05 UTC2h 20m
2026-07-19 DAL2852 TPA → DTW Jul 19, 15:00 UTCJul 19, 17:10 UTC2h 10m
2026-07-19 DAL2852 TPA → DTW Jul 19, 14:56 UTCJul 19, 17:03 UTC2h 7m
2026-07-19 DAL2852 - Jul 19, 11:10 UTCJul 19, 13:15 UTC2h 5m
2026-07-19 DAL2255 - Jul 19, 00:10 UTCJul 19, 03:15 UTC3h 5m
2026-07-18 DAL1659 LAS → SLC Jul 18, 21:10 UTCJul 18, 22:05 UTC55m
2026-07-18 DAL1659 SLC → LAS Jul 18, 18:55 UTCJul 18, 19:55 UTC1h 0m
2026-07-18 DAL2858 SEA → SLC Jul 18, 14:35 UTCJul 18, 16:05 UTC1h 30m
2026-07-18 DAL2016 SLC → SEA Jul 18, 03:15 UTCJul 18, 04:55 UTC1h 40m
2026-07-17 DAL765 DTW → SLC Jul 17, 22:00 UTCJul 18, 01:20 UTC3h 20m
2026-07-17 DAL308 LGA → DTW Jul 17, 18:55 UTCJul 17, 20:10 UTC1h 15m
2026-07-17 DAL1164 - Jul 17, 15:10 UTCJul 17, 17:15 UTC2h 5m
2026-07-17 DAL1164 LGA → MCO Jul 17, 11:25 UTCJul 17, 13:35 UTC2h 10m
2026-07-17 DAL468 ATL → LGA Jul 17, 00:14 UTCJul 17, 02:15 UTC2h 0m

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 N397DN page for operator, model, and routing details .

Mode-S A49D22 frequently asked

What is Mode-S code A49D22?
A49D22 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N397DN.
Where is Mode-S A49D22 registered?
Mode-S code A49D22 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 A49D22 broadcasting right now?
Yes. Mode-S A49D22 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A49D22, octal 51116442, decimal 10,788,130.
What flights does A49D22 operate?
Mode-S A49D22 has broadcast 20 distinct callsigns, including DAL1580, DAL2887, DAL2321, DAL888, DAL2852.