Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A042D5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N116DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A042D5
Octal
50041325
Decimal
10,502,869
Country
US
Tail
N116DN
Type
A321
No current signal · last broadcast Jul 26, 20:50 UTC
Flights observed
536
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Last known position

Most recent position reported by Mode-S A042D5.

Country allocation

The ICAO 24-bit address A042D5 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
DAL513 - 10 2026-07-15
DAL1181 - 9 2026-06-19
DAL2070 Delta Air Lines 8 2026-06-05
DAL1465 - 8 2026-06-22
DAL843 Delta Air Lines 7 2026-07-25
DAL2397 Delta Air Lines 7 2026-06-25
DAL994 - 6 2026-06-29
DAL894 Delta Air Lines 6 2026-06-02
DAL550 - 6 2026-07-17
DAL2720 - 6 2026-06-24
DAL1117 Delta Air Lines 6 2026-06-05
DAL1046 - 6 2026-07-19
DAL990 - 5 2026-07-15
DAL2841 - 5 2026-07-13
DAL2589 - 5 2026-07-20
DAL2349 - 5 2026-07-18
DAL2308 - 5 2026-06-20
DAL2133 - 5 2026-06-20
DAL1882 - 5 2026-07-17
DAL1206 - 5 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL524 LAX → SFO Jul 26, 19:05 UTCJul 26, 20:45 UTC1h 40m
2026-07-26 DAL993 DTW → SLC Jul 26, 15:20 UTCJul 26, 17:00 UTC1h 40m
2026-07-26 DAL323 LAX → JFK Jul 26, 11:50 UTCJul 26, 13:35 UTC1h 45m
2026-07-26 DAL819 ATL → LGA Jul 26, 05:50 UTCJul 26, 09:40 UTC3h 51m
2026-07-25 DAL843 SFO → DTW Jul 25, 19:55 UTCJul 25, 23:50 UTC3h 55m
2026-07-25 DAL729 SFO → LAX Jul 25, 13:36 UTCJul 25, 17:40 UTC4h 4m
2026-07-25 DAL729 SFO → LAX Jul 25, 13:40 UTCJul 25, 17:40 UTC4h 0m
2026-07-25 DAL700 CVG → DEN Jul 25, 04:15 UTCJul 25, 08:10 UTC3h 55m
2026-07-24 DAL334 BOS → ATL Jul 24, 21:35 UTCJul 25, 01:25 UTC3h 50m
2026-07-24 DAL334 BOS → ATL Jul 24, 21:32 UTCJul 25, 01:27 UTC3h 55m
2026-07-24 DAL334 BOS → ATL Jul 24, 19:35 UTCJul 24, 20:20 UTC45m
2026-07-24 DAL334 BOS → ATL Jul 24, 13:55 UTCJul 24, 17:45 UTC3h 50m
2026-07-23 DAL1070 MCO → MSP Jul 23, 18:15 UTCJul 23, 21:35 UTC3h 20m
2026-07-23 DAL1070 MCO → MSP Jul 23, 13:05 UTCJul 23, 16:45 UTC3h 40m
2026-07-22 DAL2940 ATL → DTW Jul 22, 03:10 UTCJul 22, 04:40 UTC1h 30m
2026-07-21 DAL715 ATL → SFO Jul 21, 21:30 UTCJul 22, 01:30 UTC4h 0m
2026-07-21 DAL326 ORD → ATL Jul 21, 15:45 UTCJul 21, 19:35 UTC3h 50m
2026-07-21 DAL364 BOS → SFO Jul 21, 12:18 UTCJul 21, 14:04 UTC1h 46m
2026-07-21 DAL364 BOS → SFO Jul 21, 12:20 UTCJul 21, 14:10 UTC1h 50m
2026-07-20 DAL468 ATL → LGA Jul 20, 23:40 UTCJul 21, 01:30 UTC1h 50m
2026-07-20 DAL1467 JFK → LAS Jul 20, 20:15 UTCJul 20, 21:40 UTC1h 25m
2026-07-20 DAL1467 JFK → LAS Jul 20, 20:14 UTCJul 20, 21:36 UTC1h 22m
2026-07-20 DAL1122 LGA → DTW Jul 20, 17:10 UTCJul 20, 18:25 UTC1h 15m
2026-07-20 DAL1122 LGA → DTW Jul 20, 17:08 UTCJul 20, 18:25 UTC1h 17m
2026-07-20 DAL2589 - Jul 20, 14:25 UTCJul 20, 15:35 UTC1h 10m
2026-07-20 DAL1461 MSP → DTW Jul 20, 11:20 UTCJul 20, 12:40 UTC1h 20m
2026-07-20 DAL2647 - Jul 20, 01:50 UTCJul 20, 05:00 UTC3h 10m
2026-07-19 DAL843 ATL → SAN Jul 19, 20:10 UTCJul 20, 00:15 UTC4h 5m
2026-07-19 DAL1046 MSP → ATL Jul 19, 15:45 UTCJul 19, 17:40 UTC1h 55m
2026-07-19 DAL1046 MSP → ATL Jul 19, 15:44 UTCJul 19, 17:37 UTC1h 53m
2026-07-19 DAL2254 - Jul 19, 12:40 UTCJul 19, 14:10 UTC1h 30m
2026-07-19 DAL2941 - Jul 19, 02:15 UTCJul 19, 03:15 UTC1h 0m
2026-07-18 DAL2349 LGA → MSP Jul 18, 22:20 UTCJul 19, 00:55 UTC2h 35m
2026-07-18 DAL323 LAX → JFK Jul 18, 11:40 UTCJul 18, 13:30 UTC1h 50m
2026-07-18 DAL819 SAN → ATL Jul 18, 06:00 UTCJul 18, 09:50 UTC3h 50m
2026-07-18 DAL819 ATL → SAN Jul 18, 01:00 UTCJul 18, 04:40 UTC3h 41m
2026-07-17 DAL1882 - Jul 17, 20:50 UTCJul 17, 22:35 UTC1h 45m
2026-07-17 DAL1882 - Jul 17, 18:55 UTCJul 17, 19:09 UTC15m
2026-07-17 DAL1882 SJU → ATL Jul 17, 18:53 UTCJul 17, 22:40 UTC3h 47m
2026-07-17 DAL1882 - Jul 17, 16:59 UTCJul 17, 17:20 UTC20m
2026-07-17 DAL1882 - Jul 17, 14:10 UTCJul 17, 15:29 UTC1h 20m
2026-07-17 DAL550 LGA → ATL Jul 17, 10:15 UTCJul 17, 11:55 UTC1h 40m
2026-07-17 DAL550 LGA → ATL Jul 17, 10:12 UTCJul 17, 12:00 UTC1h 48m
2026-07-16 DAL434 ATL → LGA Jul 16, 23:18 UTCJul 17, 01:11 UTC1h 53m
2026-07-16 DAL434 ATL → LGA Jul 16, 23:20 UTCJul 17, 01:15 UTC1h 55m
2026-07-16 DAL322 BOS → ATL Jul 16, 18:25 UTCJul 16, 20:29 UTC2h 5m
2026-07-16 DAL322 BOS → ATL Jul 16, 18:20 UTCJul 16, 20:26 UTC2h 6m
2026-07-16 DAL855 ATL → BOS Jul 16, 14:25 UTCJul 16, 16:30 UTC2h 5m
2026-07-16 DAL855 ATL → BOS Jul 16, 14:22 UTCJul 16, 16:30 UTC2h 8m
2026-07-16 DAL1152 - Jul 16, 10:29 UTCJul 16, 12:00 UTC1h 30m

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 N116DN page for operator, model, and routing details .

Mode-S A042D5 frequently asked

What is Mode-S code A042D5?
A042D5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N116DN.
Where is Mode-S A042D5 registered?
Mode-S code A042D5 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 A042D5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A042D5, octal 50041325, decimal 10,502,869.
What flights does A042D5 operate?
Mode-S A042D5 has broadcast 20 distinct callsigns, including DAL513, DAL1181, DAL2070, DAL1465, DAL843.