Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A42EFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N369NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A42EFC
Octal
51027374
Decimal
10,759,932
Country
US
Tail
N369NW
Type
A320
Broadcasting now · callsign DAL850 · 30,000 ft
Flights observed
560
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Current position

A42EFC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A42EFC 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
DAL2749 Delta Air Lines 15 2026-07-24
DAL2982 Delta Air Lines 14 2026-07-21
DAL1242 Delta Air Lines 14 2026-07-24
DAL1337 Delta Air Lines 13 2026-06-07
DAL1145 - 13 2026-07-07
DAL735 Delta Air Lines 12 2026-07-24
DAL2688 Delta Air Lines 11 2026-05-25
DAL2566 Delta Air Lines 11 2026-05-24
DAL1842 Delta Air Lines 11 2026-07-24
DAL2790 Delta Air Lines 10 2026-06-15
DAL2996 - 9 2026-07-20
DAL2994 - 9 2026-07-05
DAL2485 - 9 2026-06-29
DAL1543 - 9 2026-07-07
DAL2896 Delta Air Lines 8 2026-06-01
DAL2660 Delta Air Lines 8 2026-07-05
DAL1853 - 8 2026-07-08
DAL1707 Delta Air Lines 8 2026-05-31
DAL1427 Delta Air Lines 8 2026-04-30
DAL3191 Delta Air Lines 7 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1749 ATL → SFO Jul 26, 20:30 UTCJul 26, 22:05 UTC1h 35m
2026-07-26 DAL2017 MKE → ATL Jul 26, 16:40 UTCJul 26, 18:55 UTC2h 15m
2026-07-26 DAL2017 MKE → ATL Jul 26, 16:37 UTCJul 26, 18:52 UTC2h 15m
2026-07-26 DAL1744 GEG → MSP Jul 26, 14:35 UTCJul 26, 15:20 UTC45m
2026-07-26 DAL1744 GEG → MSP Jul 26, 14:34 UTCJul 26, 15:18 UTC44m
2026-07-26 DAL2173 BOI → SLC Jul 26, 12:15 UTCJul 26, 13:00 UTC45m
2026-07-26 DAL2488 BOS → RDU Jul 26, 00:20 UTCJul 26, 03:00 UTC2h 40m
2026-07-25 DAL2129 LGA → ORD Jul 25, 19:05 UTCJul 25, 22:40 UTC3h 35m
2026-07-25 DAL2129 LGA → ORD Jul 25, 19:02 UTCJul 25, 22:29 UTC3h 27m
2026-07-25 DAL2129 LGA → ORD Jul 25, 14:20 UTCJul 25, 17:25 UTC3h 5m
2026-07-25 DAL2403 CMH → MSP Jul 25, 11:10 UTCJul 25, 12:45 UTC1h 35m
2026-07-25 DAL1356 TPA → LGA Jul 25, 01:30 UTCJul 25, 02:45 UTC1h 15m
2026-07-25 DAL1356 TPA → LGA Jul 25, 01:26 UTCJul 25, 02:45 UTC1h 19m
2026-07-24 DAL1842 PVR → ATL Jul 24, 22:30 UTCJul 24, 23:55 UTC1h 25m
2026-07-24 DAL1842 PVR → ATL Jul 24, 22:29 UTCJul 24, 23:53 UTC1h 24m
2026-07-24 DAL735 LGA → ATL Jul 24, 18:40 UTCJul 24, 20:45 UTC2h 5m
2026-07-24 DAL735 LGA → ATL Jul 24, 18:39 UTCJul 24, 20:45 UTC2h 6m
2026-07-24 DAL2970 ATL → MKE Jul 24, 15:20 UTCJul 24, 17:20 UTC2h 0m
2026-07-24 DAL1242 AUS → MSP Jul 24, 11:20 UTCJul 24, 13:35 UTC2h 15m
2026-07-24 DAL2749 BNA → BOS Jul 24, 01:05 UTCJul 24, 03:20 UTC2h 15m
2026-07-24 DAL2749 BNA → BOS Jul 24, 01:10 UTCJul 24, 03:20 UTC2h 10m
2026-07-23 DAL2900 JAX → LGA Jul 23, 20:50 UTCJul 23, 22:45 UTC1h 55m
2026-07-23 DAL1041 DFW → DTW Jul 23, 17:00 UTCJul 23, 19:10 UTC2h 10m
2026-07-23 DAL3191 ATL → GSO Jul 23, 14:55 UTCJul 23, 15:40 UTC45m
2026-07-23 DAL3191 ATL → GSO Jul 23, 12:40 UTCJul 23, 13:25 UTC45m
2026-07-23 DAL2964 JFK → FLL Jul 23, 09:40 UTCJul 23, 11:10 UTC1h 30m
2026-07-23 DAL2989 DTW → BDL Jul 23, 01:40 UTCJul 23, 03:05 UTC1h 25m
2026-07-22 DAL1435 MSP → DTW Jul 22, 22:45 UTCJul 23, 00:00 UTC1h 15m
2026-07-22 DAL2062 AUS → MSP Jul 22, 19:10 UTCJul 22, 21:25 UTC2h 15m
2026-07-22 DAL2062 AUS → MSP Jul 22, 15:30 UTCJul 22, 17:40 UTC2h 10m
2026-07-22 DAL2808 - Jul 22, 11:45 UTCJul 22, 14:05 UTC2h 20m
2026-07-22 DAL2808 BOI → MSP Jul 22, 11:42 UTCJul 22, 13:59 UTC2h 17m
2026-07-22 DAL2488 BOS → RDU Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-22 DAL2488 BOS → RDU Jul 22, 03:07 UTCJul 22, 05:43 UTC2h 36m
2026-07-21 DAL2982 ORD → BOS Jul 21, 21:30 UTCJul 21, 23:50 UTC2h 20m
2026-07-21 DAL2982 ORD → BOS Jul 21, 17:45 UTCJul 21, 20:15 UTC2h 30m
2026-07-21 DAL2875 IND → ATL Jul 21, 13:15 UTCJul 21, 16:00 UTC2h 45m
2026-07-21 DAL2977 JFK → SAN Jul 21, 00:20 UTCJul 21, 03:50 UTC3h 30m
2026-07-20 DAL2900 JAX → LGA Jul 20, 20:57 UTCJul 20, 22:59 UTC2h 2m
2026-07-20 DAL2900 JAX → LGA Jul 20, 21:00 UTCJul 20, 23:05 UTC2h 5m
2026-07-20 DAL1041 - Jul 20, 17:10 UTCJul 20, 19:15 UTC2h 5m
2026-07-20 DAL3191 ATL → GSO Jul 20, 15:05 UTCJul 20, 15:45 UTC40m
2026-07-20 DAL3191 ATL → GSO Jul 20, 15:04 UTCJul 20, 15:45 UTC41m
2026-07-20 DAL3191 ATL → GSO Jul 20, 12:50 UTCJul 20, 13:35 UTC45m
2026-07-20 DAL2996 - Jul 20, 10:20 UTCJul 20, 11:35 UTC1h 15m
2026-07-20 DAL1053 ATL → ALB Jul 20, 01:55 UTCJul 20, 03:50 UTC1h 55m
2026-07-19 DAL1118 CVG → SLC Jul 19, 01:10 UTCJul 19, 01:40 UTC30m
2026-07-18 DAL1118 CVG → SLC Jul 18, 21:15 UTCJul 18, 23:35 UTC2h 20m
2026-07-18 DAL1118 CVG → SLC Jul 18, 16:05 UTCJul 18, 18:20 UTC2h 15m
2026-07-18 DAL2691 - Jul 18, 11:50 UTCJul 18, 13:35 UTC1h 45m

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 N369NW page for operator, model, and routing details .

Mode-S A42EFC frequently asked

What is Mode-S code A42EFC?
A42EFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N369NW.
Where is Mode-S A42EFC registered?
Mode-S code A42EFC 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 A42EFC broadcasting right now?
Yes. Mode-S A42EFC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A42EFC, octal 51027374, decimal 10,759,932.
What flights does A42EFC operate?
Mode-S A42EFC has broadcast 20 distinct callsigns, including DAL2749, DAL2982, DAL1242, DAL1337, DAL1145.