Apparatus

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sensors Mode-S transponder

ACDC40

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N928DU · BOEING 737-900 · operated by BANK OF UTAH TRUSTEE

Hex
ACDC40
Octal
53156100
Decimal
11,328,576
Country
US
Tail
N928DU
Type
B739
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
527
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S ACDC40.

Country allocation

The ICAO 24-bit address ACDC40 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
DAL2695 Delta Air Lines 7 2026-04-28
DAL2547 Delta Air Lines 7 2026-04-27
DAL3115 - 6 2026-07-10
DAL2437 - 6 2026-07-03
DAL2136 - 6 2026-07-15
DAL1766 Delta Air Lines 6 2026-06-18
DAL1393 - 6 2026-06-26
DAL801 Delta Air Lines 5 2026-06-14
DAL532 Delta Air Lines 5 2026-05-08
DAL503 Delta Air Lines 5 2026-07-02
DAL3114 Delta Air Lines 5 2026-07-19
DAL2369 - 5 2026-07-03
DAL1944 Delta Air Lines 5 2026-07-21
DAL1701 Delta Air Lines 5 2026-05-28
DAL1523 - 5 2026-07-09
DAL1359 Delta Air Lines 5 2026-07-02
DAL809 Delta Air Lines 4 2026-07-18
DAL600 - 4 2026-06-29
DAL2415 - 4 2026-06-16
DAL2378 Delta Air Lines 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2720 JAX → ATL Jul 26, 21:50 UTCJul 26, 22:00 UTC10m
2026-07-26 DAL2720 JAX → ATL Jul 26, 19:25 UTCJul 26, 20:10 UTC45m
2026-07-26 DAL2978 MSP → YYC Jul 26, 16:45 UTCJul 26, 17:55 UTC1h 10m
2026-07-26 DAL2978 MSP → YYC Jul 26, 13:50 UTCJul 26, 15:15 UTC1h 25m
2026-07-26 DAL1361 SAT → LAX Jul 26, 10:50 UTCJul 26, 12:05 UTC1h 15m
2026-07-25 DAL1124 RSW → ATL Jul 25, 21:20 UTCJul 25, 22:35 UTC1h 15m
2026-07-25 DAL2342 LGA → MIA Jul 25, 18:00 UTCJul 25, 19:45 UTC1h 45m
2026-07-25 DAL1411 JAX → JFK Jul 25, 12:55 UTCJul 25, 16:25 UTC3h 30m
2026-07-24 DAL1233 JFK → AUS Jul 24, 22:10 UTCJul 25, 01:20 UTC3h 10m
2026-07-24 DAL732 DTW → LAS Jul 24, 15:20 UTCJul 24, 17:40 UTC2h 20m
2026-07-24 DAL2042 JFK → TPA Jul 24, 11:40 UTCJul 24, 14:00 UTC2h 20m
2026-07-24 DAL2042 JFK → TPA Jul 24, 11:35 UTCJul 24, 13:50 UTC2h 15m
2026-07-24 DAL1419 DTW → DEN Jul 24, 00:30 UTCJul 24, 02:50 UTC2h 20m
2026-07-23 DAL1419 DTW → DEN Jul 23, 20:20 UTCJul 23, 23:15 UTC2h 55m
2026-07-23 DAL1422 JFK → FLL Jul 23, 15:30 UTCJul 23, 18:00 UTC2h 30m
2026-07-23 DAL1422 JFK → FLL Jul 23, 11:20 UTCJul 23, 14:00 UTC2h 40m
2026-07-22 DAL2398 MCO → LGA Jul 22, 23:25 UTCJul 23, 01:10 UTC1h 45m
2026-07-22 DAL2438 MCO → CVG Jul 22, 19:25 UTCJul 22, 20:40 UTC1h 15m
2026-07-22 DAL2438 MCO → CVG Jul 22, 16:55 UTCJul 22, 17:55 UTC1h 0m
2026-07-22 DAL2227 JFK → ATL Jul 22, 13:15 UTCJul 22, 15:00 UTC1h 45m
2026-07-22 DAL2639 EWR → ATL Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 DAL2378 SMF → SEA Jul 22, 00:00 UTCJul 22, 02:15 UTC2h 15m
2026-07-21 DAL2378 SMF → SEA Jul 21, 23:57 UTCJul 22, 02:08 UTC2h 11m
2026-07-21 DAL1965 NAS → ATL Jul 21, 17:35 UTCJul 21, 19:10 UTC1h 35m
2026-07-21 DAL1944 ATL → NAS Jul 21, 14:05 UTCJul 21, 15:20 UTC1h 15m
2026-07-21 DAL690 BOS → MSP Jul 21, 07:50 UTCJul 21, 12:05 UTC4h 15m
2026-07-21 DAL545 LAX → SFO Jul 21, 01:54 UTCJul 21, 06:03 UTC4h 9m
2026-07-21 DAL545 LAX → SFO Jul 21, 01:55 UTCJul 21, 06:10 UTC4h 15m
2026-07-20 DAL3112 ATL → SAV Jul 20, 23:30 UTCJul 21, 00:10 UTC39m
2026-07-20 DAL3112 ATL → SAV Jul 20, 21:20 UTCJul 20, 22:00 UTC40m
2026-07-20 DAL2925 - Jul 20, 18:35 UTCJul 20, 19:45 UTC1h 10m
2026-07-20 DAL2925 ATL → ORF Jul 20, 15:50 UTCJul 20, 17:05 UTC1h 15m
2026-07-20 DAL2299 - Jul 20, 13:40 UTCJul 20, 14:35 UTC55m
2026-07-20 DAL3093 ATL → SDF Jul 20, 01:45 UTCJul 20, 02:35 UTC50m
2026-07-19 DAL2700 STL → ATL Jul 19, 22:40 UTCJul 20, 00:10 UTC1h 30m
2026-07-19 DAL2700 ATL → STL Jul 19, 19:30 UTCJul 19, 20:55 UTC1h 25m
2026-07-19 DAL2356 - Jul 19, 16:05 UTCJul 19, 16:45 UTC40m
2026-07-19 DAL2356 - Jul 19, 13:50 UTCJul 19, 14:35 UTC45m
2026-07-19 DAL3114 - Jul 19, 11:10 UTCJul 19, 11:55 UTC45m
2026-07-19 DAL3131 - Jul 19, 03:55 UTCJul 19, 04:35 UTC40m
2026-07-18 DAL809 SJC → ATL Jul 18, 19:50 UTCJul 19, 00:30 UTC4h 40m
2026-07-18 DAL809 SJC → ATL Jul 18, 13:55 UTCJul 18, 18:05 UTC4h 10m
2026-07-18 DAL1547 SAT → DTW Jul 18, 10:30 UTCJul 18, 11:30 UTC1h 0m
2026-07-18 DAL2224 ATL → MSY Jul 18, 03:45 UTCJul 18, 04:40 UTC55m
2026-07-17 DAL2206 PDX → ATL Jul 17, 21:25 UTCJul 18, 01:50 UTC4h 25m
2026-07-17 DAL2206 ATL → PDX Jul 17, 15:25 UTCJul 17, 19:45 UTC4h 20m
2026-07-17 DAL1536 STL → ATL Jul 17, 12:15 UTCJul 17, 13:25 UTC1h 10m
2026-07-17 DAL2833 ATL → STL Jul 17, 02:34 UTCJul 17, 03:39 UTC1h 5m
2026-07-16 DAL809 SJC → ATL Jul 16, 19:50 UTCJul 17, 00:35 UTC4h 45m
2026-07-16 DAL809 ATL → SJC Jul 16, 14:00 UTCJul 16, 18:10 UTC4h 10m

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 N928DU page for operator, model, and routing details .

Mode-S ACDC40 frequently asked

What is Mode-S code ACDC40?
ACDC40 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N928DU.
Where is Mode-S ACDC40 registered?
Mode-S code ACDC40 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 ACDC40 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACDC40, octal 53156100, decimal 11,328,576.
What flights does ACDC40 operate?
Mode-S ACDC40 has broadcast 20 distinct callsigns, including DAL2695, DAL2547, DAL3115, DAL2437, DAL2136.