Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC50D1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N893DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AC50D1
Octal
53050321
Decimal
11,292,881
Country
US
Tail
N893DN
Type
B739
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
552
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AC50D1.

Country allocation

The ICAO 24-bit address AC50D1 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
DAL904 Delta Air Lines 6 2026-05-17
DAL2397 Delta Air Lines 6 2026-04-18
DAL2807 Delta Air Lines 5 2026-07-06
DAL2535 - 5 2026-04-16
DAL2340 - 5 2026-07-08
DAL1820 - 5 2026-07-07
DAL1437 - 5 2026-07-10
DAL1424 - 5 2026-07-02
DAL941 Delta Air Lines 4 2026-06-12
DAL3198 Delta Air Lines 4 2026-04-22
DAL2747 Delta Air Lines 4 2026-06-05
DAL2469 - 4 2026-07-02
DAL2281 - 4 2026-06-21
DAL2058 Delta Air Lines 4 2026-07-05
DAL1911 Delta Air Lines 4 2026-06-10
DAL1664 - 4 2026-07-09
DAL1550 - 4 2026-06-15
DAL971 Delta Air Lines 3 2026-07-24
DAL914 Delta Air Lines 3 2026-04-15
DAL809 Delta Air Lines 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2114 MSY → ATL Jul 26, 21:00 UTCJul 26, 22:15 UTC1h 15m
2026-07-26 DAL2924 SLC → OAK Jul 26, 17:35 UTCJul 26, 19:35 UTC2h 0m
2026-07-26 DAL2924 SLC → OAK Jul 26, 17:35 UTCJul 26, 19:35 UTC2h 0m
2026-07-26 DAL2628 HSV → ATL Jul 26, 13:25 UTCJul 26, 15:45 UTC2h 20m
2026-07-25 DAL2159 LAX → AUS Jul 25, 22:45 UTCJul 26, 01:45 UTC3h 0m
2026-07-25 DAL469 DTW → SFO Jul 25, 16:25 UTCJul 25, 20:45 UTC4h 20m
2026-07-25 DAL808 JFK → LAX Jul 25, 12:40 UTCJul 25, 14:45 UTC2h 5m
2026-07-25 DAL808 JFK → LAX Jul 25, 12:36 UTCJul 25, 14:46 UTC2h 10m
2026-07-25 DAL1355 MSP → LGA Jul 25, 00:55 UTCJul 25, 03:00 UTC2h 5m
2026-07-24 DAL618 CUN → DTW Jul 24, 19:45 UTCJul 24, 23:15 UTC3h 30m
2026-07-24 DAL619 DTW → CUN Jul 24, 16:25 UTCJul 24, 18:30 UTC2h 5m
2026-07-24 DAL1074 MSP → LGA Jul 24, 12:20 UTCJul 24, 14:50 UTC2h 30m
2026-07-24 DAL1074 MSP → LGA Jul 24, 12:18 UTCJul 24, 14:47 UTC2h 29m
2026-07-24 DAL971 MSP → CMH Jul 24, 00:20 UTCJul 24, 02:55 UTC2h 35m
2026-07-23 DAL1804 GDL → ATL Jul 23, 20:00 UTCJul 23, 22:35 UTC2h 35m
2026-07-23 DAL1992 ATL → GDL Jul 23, 14:23 UTCJul 23, 17:22 UTC2h 59m
2026-07-23 DAL1992 ATL → GDL Jul 23, 14:25 UTCJul 23, 16:45 UTC2h 20m
2026-07-22 DAL1206 JAX → MSP Jul 22, 22:55 UTCJul 23, 00:30 UTC1h 35m
2026-07-22 DAL1206 JAX → MSP Jul 22, 19:40 UTCJul 22, 21:20 UTC1h 40m
2026-07-22 DAL741 SMF → ATL Jul 22, 13:40 UTCJul 22, 17:50 UTC4h 10m
2026-07-22 DAL574 BOS → ATL Jul 22, 00:00 UTCJul 22, 03:15 UTC3h 15m
2026-07-21 DAL574 BOS → ATL Jul 21, 23:57 UTCJul 22, 03:11 UTC3h 14m
2026-07-21 DAL2415 SLC → SFO Jul 21, 19:00 UTCJul 21, 21:45 UTC2h 45m
2026-07-21 DAL2415 SLC → SFO Jul 21, 14:30 UTCJul 21, 17:40 UTC3h 10m
2026-07-21 DAL2221 PHL → MSP Jul 21, 11:05 UTCJul 21, 12:55 UTC1h 50m
2026-07-21 DAL858 EWR → ATL Jul 21, 01:40 UTCJul 21, 05:30 UTC3h 50m
2026-07-20 DAL355 JFK → LAX Jul 20, 20:15 UTCJul 20, 23:50 UTC3h 35m
2026-07-20 DAL2214 SLC → BNA Jul 20, 15:35 UTCJul 20, 18:30 UTC2h 55m
2026-07-20 DAL1440 GEG → SLC Jul 20, 12:30 UTCJul 20, 13:40 UTC1h 10m
2026-07-20 DAL2418 SFO → DTW Jul 20, 03:50 UTCJul 20, 06:40 UTC2h 50m
2026-07-20 DAL2418 SFO → DTW Jul 20, 03:50 UTCJul 20, 06:38 UTC2h 48m
2026-07-20 DAL2699 - Jul 20, 00:10 UTCJul 20, 02:30 UTC2h 20m
2026-07-19 DAL2699 MSP → RDU Jul 19, 20:25 UTCJul 19, 22:25 UTC2h 0m
2026-07-19 DAL2697 - Jul 19, 16:40 UTCJul 19, 18:10 UTC1h 30m
2026-07-18 DAL1844 PUJ → DTW Jul 18, 12:50 UTCJul 18, 22:50 UTC10h 0m
2026-07-18 DAL1014 LGA → DTW Jul 18, 00:50 UTCJul 18, 02:09 UTC1h 20m
2026-07-17 DAL2732 ATL → STL Jul 17, 20:44 UTCJul 17, 22:55 UTC2h 10m
2026-07-17 DAL536 SEA → MSP Jul 17, 16:19 UTCJul 17, 19:15 UTC2h 55m
2026-07-17 DAL814 DTW → BDL Jul 17, 10:25 UTCJul 17, 14:35 UTC4h 10m
2026-07-16 DAL1262 ATL → DTW Jul 16, 23:49 UTCJul 17, 01:15 UTC1h 25m
2026-07-16 DAL1246 - Jul 16, 20:05 UTCJul 16, 22:19 UTC2h 15m
2026-07-16 DAL1246 ATL → MKE Jul 16, 17:00 UTCJul 16, 18:34 UTC1h 35m
2026-07-16 DAL3128 MSY → ATL Jul 16, 14:25 UTCJul 16, 15:30 UTC1h 5m
2026-07-16 DAL3128 ATL → MSY Jul 16, 11:54 UTCJul 16, 13:00 UTC1h 5m
2026-07-16 DAL3055 - Jul 16, 09:15 UTCJul 16, 09:55 UTC40m
2026-07-16 DAL2850 - Jul 16, 03:55 UTCJul 16, 04:40 UTC45m
2026-07-15 DAL1987 ATL → ATL Jul 15, 20:00 UTCJul 16, 02:15 UTC6h 15m
2026-07-15 DAL1380 - Jul 15, 14:35 UTCJul 15, 15:45 UTC1h 10m
2026-07-15 DAL1380 - Jul 15, 11:55 UTCJul 15, 13:10 UTC1h 15m
2026-07-14 DAL2293 - Jul 14, 22:00 UTCJul 14, 23:45 UTC1h 44m

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 N893DN page for operator, model, and routing details .

Mode-S AC50D1 frequently asked

What is Mode-S code AC50D1?
AC50D1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N893DN.
Where is Mode-S AC50D1 registered?
Mode-S code AC50D1 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 AC50D1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC50D1, octal 53050321, decimal 11,292,881.
What flights does AC50D1 operate?
Mode-S AC50D1 has broadcast 20 distinct callsigns, including DAL904, DAL2397, DAL2807, DAL2535, DAL2340.