Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A4E35F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N414DZ · AIRBUS A-330-900 · operated by DELTA AIR LINES INC

Hex
A4E35F
Octal
51161537
Decimal
10,806,111
Country
US
Tail
N414DZ
Type
A339
Broadcasting now · callsign DAL43 · 34,000 ft
Flights observed
230
Distinct callsigns
20
Country
US
Last broadcast
6m ago

Current position

A4E35F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4E35F 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
DAL57 - 8 2026-07-05
DAL125 - 8 2026-07-10
DAL227 - 7 2026-06-14
DAL9 - 6 2026-06-16
DAL81 Delta Air Lines 6 2026-06-19
DAL4 Delta Air Lines 6 2026-06-05
DAL3 - 6 2026-06-16
DAL226 - 6 2026-06-15
DAL225 - 6 2026-07-06
DAL63 - 5 2026-07-12
DAL242 - 5 2026-07-13
DAL220 Delta Air Lines 5 2026-07-05
DAL213 Delta Air Lines 5 2026-06-29
DAL165 Delta Air Lines 5 2026-05-30
DAL164 - 5 2026-06-18
DAL137 Delta Air Lines 5 2026-07-02
DAL124 - 5 2026-07-10
DAL10 Delta Air Lines 5 2026-06-05
DAL80 - 4 2026-06-19
DAL742 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL43 - Jul 14, 11:50 UTCJul 14, 13:45 UTC1h 55m
2026-07-13 DAL42 SEA → FCO Jul 13, 21:25 UTCJul 14, 07:48 UTC10h 23m
2026-07-13 DAL42 - Jul 13, 21:25 UTCJul 14, 07:45 UTC10h 20m
2026-07-13 DAL143 AMS → SEA Jul 13, 09:25 UTCJul 13, 19:04 UTC9h 39m
2026-07-13 DAL143 - Jul 13, 09:25 UTCJul 13, 10:55 UTC1h 30m
2026-07-13 DAL242 - Jul 13, 00:15 UTCJul 13, 06:45 UTC6h 30m
2026-07-12 DAL63 - Jul 12, 14:30 UTCJul 12, 15:30 UTC1h 0m
2026-07-12 DAL63 MAD → BOS Jul 12, 14:26 UTCJul 12, 21:18 UTC6h 52m
2026-07-12 DAL63 MAD → BOS Jul 12, 14:26 UTCJul 12, 21:21 UTC6h 55m
2026-07-12 DAL108 ATL → MAD Jul 12, 04:01 UTCJul 12, 12:15 UTC8h 15m
2026-07-11 DAL109 MAD → ATL Jul 11, 08:05 UTCJul 11, 17:05 UTC9h 0m
2026-07-10 DAL62 BOS → MAD Jul 10, 21:50 UTCJul 11, 04:05 UTC6h 15m
2026-07-10 DAL125 LIS → BOS Jul 10, 12:00 UTCJul 10, 18:40 UTC6h 40m
2026-07-10 DAL125 LIS → BOS Jul 10, 11:58 UTCJul 10, 18:32 UTC6h 34m
2026-07-10 DAL124 BOS → LIS Jul 10, 03:40 UTCJul 10, 09:25 UTC5h 45m
2026-07-09 DAL125 - Jul 9, 12:05 UTCJul 9, 18:45 UTC6h 40m
2026-07-09 DAL124 BOS → LIS Jul 9, 03:50 UTCJul 9, 09:45 UTC5h 55m
2026-07-08 DAL59 - Jul 8, 09:15 UTCJul 8, 15:45 UTC6h 30m
2026-07-08 DAL59 LHR → BOS Jul 8, 09:11 UTCJul 8, 15:47 UTC6h 36m
2026-07-07 DAL16 - Jul 7, 22:50 UTCJul 8, 01:00 UTC2h 10m
2026-07-07 DAL16 DTW → LHR Jul 7, 22:49 UTCJul 8, 05:56 UTC7h 7m
2026-07-07 DAL133 AMS → DTW Jul 7, 08:15 UTCJul 7, 16:00 UTC7h 45m
2026-07-07 DAL133 AMS → DTW Jul 7, 08:13 UTCJul 7, 15:57 UTC7h 44m
2026-07-06 DAL256 - Jul 6, 20:55 UTCJul 7, 02:55 UTC6h 0m
2026-07-06 DAL225 - Jul 6, 10:05 UTCJul 6, 17:15 UTC7h 10m
2026-07-06 DAL225 CDG → BOS Jul 6, 10:03 UTCJul 6, 17:12 UTC7h 9m
2026-07-05 DAL220 SLC → CDG Jul 5, 22:00 UTCJul 5, 23:45 UTC1h 45m
2026-07-05 DAL220 SLC → CDG Jul 5, 21:58 UTCJul 6, 07:16 UTC9h 18m
2026-07-05 DAL57 - Jul 5, 09:35 UTCJul 5, 09:45 UTC10m
2026-07-05 DAL57 AMS → SLC Jul 5, 09:30 UTCJul 5, 19:28 UTC9h 58m
2026-07-04 DAL132 - Jul 4, 20:35 UTCJul 4, 21:45 UTC1h 10m
2026-07-04 DAL132 DTW → AMS Jul 4, 20:34 UTCJul 5, 03:27 UTC6h 53m
2026-07-04 DAL17 LHR → DTW Jul 4, 10:10 UTCJul 4, 11:35 UTC1h 25m
2026-07-04 DAL17 LHR → DTW Jul 4, 10:06 UTCJul 4, 18:09 UTC8h 3m
2026-07-03 DAL58 BOS → LHR Jul 3, 23:38 UTCJul 4, 05:22 UTC5h 44m
2026-07-03 DAL58 - Jul 3, 23:40 UTCJul 4, 00:50 UTC1h 10m
2026-07-03 DAL257 - Jul 3, 13:10 UTCJul 3, 20:45 UTC7h 35m
2026-07-03 DAL136 - Jul 3, 03:20 UTCJul 3, 10:20 UTC7h 0m
2026-07-02 DAL137 AMS → DTW Jul 2, 19:15 UTCJul 2, 19:45 UTC30m
2026-07-02 DAL137 AMS → DTW Jul 2, 13:00 UTCJul 2, 14:25 UTC1h 25m
2026-07-02 DAL137 AMS → DTW Jul 2, 12:56 UTCJul 2, 21:09 UTC8h 13m
2026-07-02 DAL137 AMS → DTW Jul 2, 12:56 UTCJul 2, 21:09 UTC8h 13m
2026-07-02 DAL236 - Jul 2, 01:25 UTCJul 2, 09:50 UTC8h 25m
2026-07-01 DAL237 - Jul 1, 13:10 UTCJul 1, 22:45 UTC9h 35m
2026-07-01 DAL48 JFK → AMS Jul 1, 03:33 UTCJul 1, 10:19 UTC6h 46m
2026-07-01 DAL48 JFK → AMS Jul 1, 03:35 UTCJul 1, 10:10 UTC6h 35m
2026-06-30 DAL939 LAX → JFK Jun 30, 18:40 UTCJun 30, 23:20 UTC4h 40m
2026-06-30 DAL742 - Jun 30, 11:30 UTCJun 30, 15:45 UTC4h 15m
2026-06-30 DAL742 JFK → LAX Jun 30, 11:28 UTCJun 30, 16:33 UTC5h 5m
2026-06-29 DAL213 ATH → JFK Jun 29, 13:20 UTCJun 29, 23:26 UTC10h 6m

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 N414DZ page for operator, model, and routing details .

Mode-S A4E35F frequently asked

What is Mode-S code A4E35F?
A4E35F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N414DZ.
Where is Mode-S A4E35F registered?
Mode-S code A4E35F 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 A4E35F broadcasting right now?
Yes. Mode-S A4E35F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4E35F, octal 51161537, decimal 10,806,111.
What flights does A4E35F operate?
Mode-S A4E35F has broadcast 20 distinct callsigns, including DAL57, DAL125, DAL227, DAL9, DAL81.