sensors Mode-S transponder

A04E00

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N119DU · AIRBUS A220-100 · operated by BANK OF UTAH TRUSTEE

Hex
A04E00
Octal
50047000
Decimal
10,505,728
Country
US
Tail
N119DU
Type
BCS1
No current signal · last broadcast 19h ago
Flights observed
181
Distinct callsigns
20
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A04E00.

Country allocation

The ICAO 24-bit address A04E00 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DAL9968 MSP → BOS May 29, 13:53 UTCMay 29, 14:05 UTC12m
2026-05-29 DAL9968 MSP → BOS May 29, 13:55 UTCMay 29, 14:10 UTC15m
2026-05-29 DAL2692 BUF → DTW May 29, 01:10 UTCMay 29, 03:25 UTC2h 15m
2026-05-28 DAL2528 MSY → ATL May 28, 20:00 UTCMay 28, 22:20 UTC2h 20m
2026-05-28 DAL3123 DTW → MEM May 28, 16:10 UTCMay 28, 18:25 UTC2h 15m
2026-05-28 DAL1314 BOS → SFO May 28, 13:15 UTCMay 28, 14:45 UTC1h 30m
2026-05-27 DAL2087 MSP → BIL May 27, 23:50 UTCMay 28, 03:15 UTC3h 25m
2026-05-26 DAL2885 LGA → SRQ May 26, 22:29 UTCMay 27, 00:55 UTC2h 25m
2026-05-26 DAL2885 LGA → SRQ May 26, 18:24 UTCMay 26, 20:45 UTC2h 20m
2026-05-26 DAL2622 CVG → ATL May 26, 14:24 UTCMay 26, 16:59 UTC2h 35m
2026-05-25 DAL762 PDX → ATL May 25, 23:30 UTCMay 26, 02:15 UTC2h 45m
2026-05-25 DAL2792 BOS → ATL May 25, 15:50 UTCMay 25, 18:00 UTC2h 10m
2026-05-25 DAL2792 BOS → ATL May 25, 15:45 UTCMay 25, 17:54 UTC2h 9m
2026-05-25 DAL2792 BOS → ATL May 25, 12:30 UTCMay 25, 14:25 UTC1h 55m
2026-05-23 DAL2006 ATL → CMH May 23, 21:10 UTCMay 23, 22:00 UTC50m
2026-05-23 DAL2006 ATL → CMH May 23, 18:55 UTCMay 23, 19:45 UTC50m
2026-05-23 DAL1053 DEN → CVG May 23, 16:40 UTCMay 23, 17:45 UTC1h 5m
2026-05-23 DAL1053 DEN → CVG May 23, 14:35 UTCMay 23, 15:45 UTC1h 10m
2026-05-23 DAL1597 DTW → DEN May 23, 11:25 UTCMay 23, 12:35 UTC1h 10m
2026-05-23 DAL1609 TUS → ATL May 23, 02:58 UTCMay 23, 04:05 UTC1h 7m
2026-05-23 DAL1609 TUS → ATL May 23, 03:00 UTCMay 23, 04:10 UTC1h 10m
2026-05-22 DAL2245 ORD → LGA May 22, 22:50 UTCMay 23, 01:25 UTC2h 35m
2026-05-22 DAL2245 ORD → LGA May 22, 22:50 UTCMay 23, 01:30 UTC2h 40m
2026-05-22 DAL396 LGA → ATL May 22, 18:00 UTCMay 22, 21:05 UTC3h 5m
2026-05-22 DAL2502 ATL → BNA May 22, 14:10 UTCMay 22, 16:40 UTC2h 30m
2026-05-22 DAL2544 SLC → OAK May 22, 12:05 UTCMay 22, 13:10 UTC1h 5m
2026-05-22 DAL1586 DTW → AUS May 22, 01:30 UTCMay 22, 02:30 UTC1h 0m
2026-05-21 DAL1254 ATL → PVD May 21, 20:45 UTCMay 21, 22:15 UTC1h 30m
2026-05-21 DAL1254 ATL → PVD May 21, 18:00 UTCMay 21, 19:20 UTC1h 20m
2026-05-21 DAL1185 LGA → MSY May 21, 14:15 UTCMay 21, 15:45 UTC1h 30m
2026-05-21 DAL1304 DTW → SFO May 21, 03:15 UTCMay 21, 04:40 UTC1h 25m
2026-05-21 DAL2920 MCO → BOS May 21, 00:50 UTCMay 21, 01:40 UTC50m
2026-05-20 DAL2920 MCO → BOS May 20, 22:50 UTCMay 20, 23:35 UTC45m
2026-05-20 DAL1116 DTW → IAH May 20, 19:55 UTCMay 20, 21:25 UTC1h 30m
2026-05-20 DAL1116 DTW → IAH May 20, 17:20 UTCMay 20, 18:45 UTC1h 25m
2026-05-20 DAL1583 SNA → SEA May 20, 13:05 UTCMay 20, 15:50 UTC2h 45m
2026-05-20 DAL2514 IND → ATL May 20, 03:15 UTCMay 20, 06:00 UTC2h 46m
2026-05-20 DAL2514 IND → ATL May 20, 03:15 UTCMay 20, 05:57 UTC2h 42m
2026-05-19 DAL1623 ATL → SJC May 19, 22:15 UTCMay 19, 23:20 UTC1h 5m
2026-05-19 DAL1623 ATL → SJC May 19, 20:05 UTCMay 19, 21:10 UTC1h 5m
2026-05-19 DAL1367 ORD → ATL May 19, 17:00 UTCMay 19, 18:20 UTC1h 20m
2026-05-19 DAL1367 ORD → ATL May 19, 14:45 UTCMay 19, 16:00 UTC1h 15m
2026-05-19 DAL2795 ATL → MCI May 19, 12:20 UTCMay 19, 13:00 UTC40m
2026-05-19 DAL1723 LAX → PDX May 19, 04:52 UTCMay 19, 06:04 UTC1h 12m
2026-05-19 DAL1723 LAX → PDX May 19, 04:55 UTCMay 19, 05:30 UTC35m
2026-05-19 DAL2903 PVD → MSP May 19, 01:05 UTCMay 19, 03:45 UTC2h 40m
2026-05-19 DAL2903 PVD → MSP May 19, 01:04 UTCMay 19, 03:41 UTC2h 37m
2026-05-18 DAL314 JFK → SFO May 18, 20:32 UTCMay 18, 23:44 UTC3h 12m
2026-05-18 DAL314 JFK → SFO May 18, 20:35 UTCMay 18, 23:45 UTC3h 10m
2026-05-18 DAL2141 SLC → SMF May 18, 16:15 UTCMay 18, 18:20 UTC2h 5m

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 N119DU page for operator, model, and routing details .

Mode-S A04E00 frequently asked

What is Mode-S code A04E00?
A04E00 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N119DU.
Where is Mode-S A04E00 registered?
Mode-S code A04E00 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 A04E00 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A04E00, octal 50047000, decimal 10,505,728.
What flights does A04E00 operate?
Mode-S A04E00 has broadcast 20 distinct callsigns, including DAL2985, DAL2533, DAL724, DAL563, DAL8962.