Apparatus

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sensors Mode-S transponder

A50E93

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N425DX · AIRBUS A-330-900 · operated by DELTA AIR LINES INC

Hex
A50E93
Octal
51207223
Decimal
10,817,171
Country
US
Tail
N425DX
Type
A339
Broadcasting now · callsign DAL221 · 3,200 ft
Flights observed
245
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Current position

A50E93 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A50E93 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
DAL214 Delta Air Lines 9 2026-06-24
DAL143 - 9 2026-07-06
DAL215 - 7 2026-06-25
DAL165 Delta Air Lines 7 2026-06-21
DAL144 - 7 2026-06-16
DAL110 Delta Air Lines 7 2026-05-18
DAL67 Delta Air Lines 6 2026-07-04
DAL101 Delta Air Lines 6 2026-05-18
DAL10 - 6 2026-06-22
DAL66 - 5 2026-07-03
DAL4 - 5 2026-06-22
DAL226 - 5 2026-06-18
DAL145 Delta Air Lines 5 2026-06-11
DAL124 - 5 2026-06-30
DAL81 Delta Air Lines 4 2026-06-12
DAL70 Delta Air Lines 4 2026-05-24
DAL63 Delta Air Lines 4 2026-07-05
DAL242 - 4 2026-07-05
DAL236 Delta Air Lines 4 2026-04-16
DAL224 - 4 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL224 BOS → CDG Jul 13, 23:35 UTCJul 14, 06:00 UTC6h 25m
2026-07-13 DAL243 AMS → BOS Jul 13, 09:45 UTCJul 13, 16:40 UTC6h 55m
2026-07-12 DAL132 - Jul 12, 20:40 UTCJul 12, 22:45 UTC2h 5m
2026-07-12 DAL132 DTW → AMS Jul 12, 20:40 UTCJul 13, 04:10 UTC7h 30m
2026-07-12 DAL17 LHR → DTW Jul 12, 10:10 UTCJul 12, 17:45 UTC7h 35m
2026-07-11 DAL16 - Jul 11, 23:00 UTCJul 12, 00:45 UTC1h 45m
2026-07-11 DAL16 DTW → LHR Jul 11, 22:55 UTCJul 12, 05:58 UTC7h 3m
2026-07-11 DAL133 - Jul 11, 07:40 UTCJul 11, 15:35 UTC7h 55m
2026-07-10 DAL256 - Jul 10, 21:10 UTCJul 11, 03:15 UTC6h 5m
2026-07-10 DAL59 LHR → BOS Jul 10, 09:00 UTCJul 10, 16:05 UTC7h 5m
2026-07-09 DAL16 - Jul 9, 23:00 UTCJul 10, 05:50 UTC6h 50m
2026-07-09 DAL133 - Jul 9, 07:40 UTCJul 9, 15:50 UTC8h 10m
2026-07-08 DAL256 BOS → AMS Jul 8, 21:40 UTCJul 9, 03:50 UTC6h 10m
2026-07-08 DAL225 - Jul 8, 11:55 UTCJul 8, 18:55 UTC7h 0m
2026-07-08 DAL220 SLC → CDG Jul 8, 00:05 UTCJul 8, 02:15 UTC2h 10m
2026-07-08 DAL220 SLC → CDG Jul 8, 00:02 UTCJul 8, 09:18 UTC9h 16m
2026-07-07 DAL57 - Jul 7, 11:15 UTCJul 7, 18:20 UTC7h 5m
2026-07-07 DAL57 AMS → SLC Jul 7, 11:14 UTCJul 7, 21:21 UTC10h 7m
2026-07-06 DAL142 SEA → AMS Jul 6, 22:00 UTCJul 7, 06:55 UTC8h 55m
2026-07-06 DAL143 AMS → SEA Jul 6, 08:50 UTCJul 6, 18:40 UTC9h 50m
2026-07-06 DAL143 AMS → SEA Jul 6, 08:49 UTCJul 6, 18:39 UTC9h 50m
2026-07-05 DAL242 BOS → AMS Jul 5, 23:13 UTCJul 6, 05:12 UTC5h 59m
2026-07-05 DAL242 - Jul 5, 23:15 UTCJul 6, 05:20 UTC6h 5m
2026-07-05 DAL63 FCO → ATL Jul 5, 13:10 UTCJul 5, 20:30 UTC7h 20m
2026-07-05 DAL108 - Jul 5, 02:00 UTCJul 5, 10:15 UTC8h 15m
2026-07-04 DAL67 FCO → ATL Jul 4, 11:35 UTCJul 4, 21:50 UTC10h 15m
2026-07-03 DAL66 - Jul 3, 23:30 UTCJul 4, 02:40 UTC3h 10m
2026-07-03 DAL66 ATL → FCO Jul 3, 23:28 UTCJul 4, 08:28 UTC9h 0m
2026-07-02 DAL55 LOS → ATL Jul 2, 11:05 UTCJul 2, 22:21 UTC11h 16m
2026-07-01 DAL54 - Jul 1, 21:25 UTCJul 2, 14:25 UTC17h 0m
2026-07-01 DAL109 - Jul 1, 08:05 UTCJul 1, 16:50 UTC8h 45m
2026-06-30 DAL62 ATL → FCO Jun 30, 21:45 UTCJul 1, 04:20 UTC6h 35m
2026-06-30 DAL125 LIS → BOS Jun 30, 12:15 UTCJun 30, 18:50 UTC6h 35m
2026-06-30 DAL124 BOS → LIS Jun 30, 03:40 UTCJun 30, 09:30 UTC5h 50m
2026-06-29 DAL63 FCO → ATL Jun 29, 13:30 UTCJun 29, 20:49 UTC7h 20m
2026-06-29 DAL108 ATL → MAD Jun 29, 03:14 UTCJun 29, 11:04 UTC7h 50m
2026-06-26 DAL67 FCO → ATL Jun 26, 11:45 UTCJun 26, 21:55 UTC10h 10m
2026-06-25 DAL66 ATL → FCO Jun 25, 23:24 UTCJun 26, 08:24 UTC9h 0m
2026-06-25 DAL215 - Jun 25, 08:40 UTCJun 25, 19:09 UTC10h 30m
2026-06-24 DAL214 ATL → FCO Jun 24, 20:13 UTCJun 25, 05:15 UTC9h 2m
2026-06-24 DAL214 ATL → FCO Jun 24, 20:14 UTCJun 24, 23:10 UTC2h 55m
2026-06-24 DAL9963 JFK → ATL Jun 24, 14:29 UTCJun 24, 16:14 UTC1h 45m
2026-06-24 DAL9963 JFK → ATL Jun 24, 14:28 UTCJun 24, 16:13 UTC1h 45m
2026-06-23 DAL185 MXP → JFK Jun 23, 13:29 UTCJun 23, 21:49 UTC8h 20m
2026-06-23 DAL184 JFK → MXP Jun 23, 03:38 UTCJun 23, 11:08 UTC7h 30m
2026-06-23 DAL184 - Jun 23, 03:39 UTCJun 23, 04:45 UTC1h 5m
2026-06-22 DAL4 - Jun 22, 15:40 UTCJun 22, 22:59 UTC7h 20m
2026-06-22 DAL10 MSP → LHR Jun 22, 04:15 UTCJun 22, 11:35 UTC7h 20m
2026-06-21 DAL165 AMS → MSP Jun 21, 13:34 UTCJun 21, 14:54 UTC1h 20m
2026-06-21 DAL165 AMS → MSP Jun 21, 13:30 UTCJun 21, 21:55 UTC8h 25m

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 N425DX page for operator, model, and routing details .

Mode-S A50E93 frequently asked

What is Mode-S code A50E93?
A50E93 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N425DX.
Where is Mode-S A50E93 registered?
Mode-S code A50E93 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 A50E93 broadcasting right now?
Yes. Mode-S A50E93 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A50E93, octal 51207223, decimal 10,817,171.
What flights does A50E93 operate?
Mode-S A50E93 has broadcast 20 distinct callsigns, including DAL214, DAL143, DAL215, DAL165, DAL144.