Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A03F1E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N115DN · AIRBUS A-321 · operated by DELTA AIR LINES INC

Hex
A03F1E
Octal
50037436
Decimal
10,501,918
Country
US
Tail
N115DN
Type
A321
No current signal · last broadcast Jul 26, 18:45 UTC
Flights observed
498
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:45 UTC

Last known position

Most recent position reported by Mode-S A03F1E.

Country allocation

The ICAO 24-bit address A03F1E 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
DAL2321 - 11 2026-06-15
DAL729 Delta Air Lines 9 2026-07-20
DAL2235 - 7 2026-07-07
DAL1181 - 7 2026-06-28
DAL819 - 6 2026-07-17
DAL2927 - 6 2026-07-02
DAL2694 Delta Air Lines 6 2026-06-02
DAL2564 - 6 2026-07-10
DAL2397 Delta Air Lines 6 2026-06-27
DAL896 Delta Air Lines 5 2026-07-20
DAL550 - 5 2026-07-15
DAL513 - 5 2026-07-10
DAL369 - 5 2026-07-03
DAL2589 - 5 2026-07-16
DAL2465 - 5 2026-06-23
DAL2191 Delta Air Lines 5 2026-07-21
DAL2125 Delta Air Lines 5 2026-05-19
DAL1803 Delta Air Lines 5 2026-07-18
DAL1434 Delta Air Lines 5 2026-05-30
DAL1379 Delta Air Lines 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL655 JFK → AUS Jul 26, 16:15 UTCJul 26, 18:45 UTC2h 30m
2026-07-26 DAL655 JFK → AUS Jul 26, 16:13 UTCJul 26, 18:54 UTC2h 41m
2026-07-26 DAL655 JFK → AUS Jul 26, 11:25 UTCJul 26, 13:50 UTC2h 25m
2026-07-24 DAL2067 LGA → BOS Jul 24, 22:10 UTCJul 24, 23:45 UTC1h 35m
2026-07-24 DAL2067 LGA → BOS Jul 24, 22:08 UTCJul 24, 23:43 UTC1h 35m
2026-07-24 DAL1983 ATL → BZE Jul 24, 19:15 UTCJul 24, 20:40 UTC1h 25m
2026-07-24 DAL754 SEA → ATL Jul 24, 13:45 UTCJul 24, 17:35 UTC3h 50m
2026-07-24 DAL700 CVG → DEN Jul 24, 01:05 UTCJul 24, 05:30 UTC4h 25m
2026-07-23 DAL999 LAX → PDX Jul 23, 21:55 UTCJul 23, 23:15 UTC1h 20m
2026-07-23 DAL2602 JFK → DFW Jul 23, 18:50 UTCJul 23, 20:00 UTC1h 10m
2026-07-23 DAL1240 FLL → LGA Jul 23, 16:00 UTCJul 23, 17:25 UTC1h 25m
2026-07-23 DAL364 BOS → SFO Jul 23, 12:25 UTCJul 23, 14:15 UTC1h 50m
2026-07-23 DAL2466 BOS → ROC Jul 23, 01:05 UTCJul 23, 03:15 UTC2h 10m
2026-07-22 DAL2460 FSD → MSP Jul 22, 20:40 UTCJul 22, 23:25 UTC2h 45m
2026-07-22 DAL1669 MCO → BOS Jul 22, 16:30 UTCJul 22, 17:45 UTC1h 15m
2026-07-22 DAL1745 DEN → DTW Jul 22, 12:15 UTCJul 22, 14:40 UTC2h 25m
2026-07-22 DAL1745 DEN → DTW Jul 22, 12:11 UTCJul 22, 14:33 UTC2h 22m
2026-07-22 DAL1705 PHX → JFK Jul 22, 03:30 UTCJul 22, 05:00 UTC1h 30m
2026-07-21 DAL2191 JFK → SLC Jul 21, 23:05 UTCJul 22, 02:15 UTC3h 10m
2026-07-21 DAL2155 - Jul 21, 17:20 UTCJul 21, 21:20 UTC4h 0m
2026-07-21 DAL2155 DTW → SAN Jul 21, 17:16 UTCJul 21, 21:21 UTC4h 5m
2026-07-20 DAL2559 LGA → FLL Jul 20, 23:00 UTCJul 21, 01:30 UTC2h 30m
2026-07-20 DAL1379 JFK → LAX Jul 20, 20:30 UTCJul 20, 21:45 UTC1h 15m
2026-07-20 DAL1379 JFK → LAX Jul 20, 20:28 UTCJul 20, 21:51 UTC1h 23m
2026-07-20 DAL729 SFO → LAX Jul 20, 14:20 UTCJul 20, 18:15 UTC3h 55m
2026-07-20 DAL896 MSP → PBI Jul 20, 01:50 UTCJul 20, 05:35 UTC3h 45m
2026-07-19 DAL2621 - Jul 19, 23:25 UTCJul 20, 00:20 UTC55m
2026-07-19 DAL2621 RDU → ATL Jul 19, 23:23 UTCJul 20, 00:18 UTC55m
2026-07-19 DAL2600 ATL → RDU Jul 19, 20:55 UTCJul 19, 21:50 UTC55m
2026-07-18 DAL1803 SDQ → ATL Jul 18, 19:05 UTCJul 18, 21:45 UTC2h 40m
2026-07-18 DAL1803 SDQ → ATL Jul 18, 18:46 UTCJul 18, 21:42 UTC2h 56m
2026-07-18 DAL1958 ATL → SDQ Jul 18, 14:00 UTCJul 18, 15:25 UTC1h 25m
2026-07-18 DAL1958 ATL → SDQ Jul 18, 13:58 UTCJul 18, 16:58 UTC3h 0m
2026-07-18 DAL1632 - Jul 18, 03:55 UTCJul 18, 05:25 UTC1h 30m
2026-07-18 DAL1632 MIA → ATL Jul 18, 03:54 UTCJul 18, 05:13 UTC1h 19m
2026-07-18 DAL1631 - Jul 18, 00:50 UTCJul 18, 02:40 UTC1h 50m
2026-07-17 DAL1227 TPA → ATL Jul 17, 16:55 UTCJul 17, 18:00 UTC1h 5m
2026-07-17 DAL1227 ATL → TPA Jul 17, 14:15 UTCJul 17, 15:20 UTC1h 5m
2026-07-17 DAL819 SAN → ATL Jul 17, 08:04 UTCJul 17, 12:04 UTC4h 0m
2026-07-17 DAL819 ATL → SAN Jul 17, 00:50 UTCJul 17, 04:39 UTC3h 50m
2026-07-16 DAL1467 JFK → LAS Jul 16, 20:19 UTCJul 16, 22:10 UTC1h 50m
2026-07-16 DAL1467 JFK → LAS Jul 16, 20:15 UTCJul 16, 21:57 UTC1h 42m
2026-07-16 DAL1122 LGA → DTW Jul 16, 17:25 UTCJul 16, 18:44 UTC1h 20m
2026-07-16 DAL2589 - Jul 16, 14:55 UTCJul 16, 16:09 UTC1h 15m
2026-07-16 DAL1461 - Jul 16, 11:20 UTCJul 16, 12:30 UTC1h 10m
2026-07-16 DAL1303 - Jul 16, 00:30 UTCJul 16, 01:50 UTC1h 20m
2026-07-15 DAL1476 MSP → DTW Jul 15, 21:30 UTCJul 15, 22:40 UTC1h 10m
2026-07-15 DAL2877 - Jul 15, 18:35 UTCJul 15, 19:30 UTC55m
2026-07-15 DAL2877 DEN → MSP Jul 15, 18:33 UTCJul 15, 20:06 UTC1h 33m
2026-07-15 DAL995 ATL → DEN Jul 15, 14:20 UTCJul 15, 16:45 UTC2h 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 N115DN page for operator, model, and routing details .

Mode-S A03F1E frequently asked

What is Mode-S code A03F1E?
A03F1E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N115DN.
Where is Mode-S A03F1E registered?
Mode-S code A03F1E 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 A03F1E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A03F1E, octal 50037436, decimal 10,501,918.
What flights does A03F1E operate?
Mode-S A03F1E has broadcast 20 distinct callsigns, including DAL2321, DAL729, DAL2235, DAL1181, DAL819.