Apparatus

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sensors Mode-S transponder

AB5C69

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N831DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB5C69
Octal
52656151
Decimal
11,230,313
Country
US
Tail
N831DN
Type
B739
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
508
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AB5C69.

Country allocation

The ICAO 24-bit address AB5C69 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
DAL2078 Delta Air Lines 9 2026-04-16
DAL2711 - 8 2026-06-19
DAL1401 Delta Air Lines 8 2026-04-15
DAL1468 - 7 2026-07-07
DAL2879 - 6 2026-07-12
DAL2461 Delta Air Lines 6 2026-04-15
DAL2437 Delta Air Lines 6 2026-05-28
DAL2604 - 5 2026-07-07
DAL1925 Delta Air Lines 5 2026-05-16
DAL1599 Delta Air Lines 5 2026-06-13
DAL1274 Delta Air Lines 5 2026-06-13
DAL1247 - 5 2026-07-12
DAL874 - 4 2026-07-12
DAL861 Delta Air Lines 4 2026-07-23
DAL574 Delta Air Lines 4 2026-05-30
DAL3097 Delta Air Lines 4 2026-05-03
DAL2791 Delta Air Lines 4 2026-05-18
DAL2720 Delta Air Lines 4 2026-07-24
DAL2700 Delta Air Lines 4 2026-06-21
DAL2607 Delta Air Lines 4 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2981 TPA → BOS Jul 26, 21:10 UTCJul 26, 22:15 UTC1h 5m
2026-07-26 DAL3104 SRQ → ATL Jul 26, 18:30 UTCJul 26, 19:40 UTC1h 10m
2026-07-26 DAL3104 SRQ → ATL Jul 26, 14:20 UTCJul 26, 15:35 UTC1h 15m
2026-07-26 DAL2838 RDU → LGA Jul 26, 11:10 UTCJul 26, 12:20 UTC1h 10m
2026-07-26 DAL1339 ATL → SDF Jul 26, 01:45 UTCJul 26, 03:05 UTC1h 20m
2026-07-25 DAL1807 ORD → BOS Jul 25, 20:10 UTCJul 25, 22:35 UTC2h 25m
2026-07-25 DAL1808 ATL → RTB Jul 25, 15:25 UTCJul 25, 17:40 UTC2h 15m
2026-07-25 DAL2909 CMH → ATL Jul 25, 11:30 UTCJul 25, 12:35 UTC1h 5m
2026-07-25 DAL1545 BNA → DTW Jul 25, 01:30 UTCJul 25, 02:35 UTC1h 5m
2026-07-24 DAL2720 JAX → ATL Jul 24, 23:00 UTCJul 24, 23:50 UTC50m
2026-07-24 DAL2720 JAX → ATL Jul 24, 20:55 UTCJul 24, 21:35 UTC40m
2026-07-24 DAL677 BZN → MSP Jul 24, 14:55 UTCJul 24, 19:00 UTC4h 5m
2026-07-24 DAL2202 JFK → MIA Jul 24, 04:05 UTCJul 24, 04:55 UTC50m
2026-07-23 DAL861 BNA → SEA Jul 23, 21:25 UTCJul 24, 01:15 UTC3h 50m
2026-07-23 DAL861 BNA → SEA Jul 23, 16:15 UTCJul 23, 19:45 UTC3h 30m
2026-07-23 DAL553 LAS → LAX Jul 23, 14:10 UTCJul 23, 14:55 UTC45m
2026-07-23 DAL2202 JFK → MIA Jul 23, 03:05 UTCJul 23, 03:55 UTC50m
2026-07-23 DAL2202 JFK → MIA Jul 23, 03:03 UTCJul 23, 03:49 UTC46m
2026-07-22 DAL861 BNA → SEA Jul 22, 21:35 UTCJul 23, 01:20 UTC3h 45m
2026-07-22 DAL861 BNA → SEA Jul 22, 16:15 UTCJul 22, 19:50 UTC3h 35m
2026-07-22 DAL553 LAS → LAX Jul 22, 14:00 UTCJul 22, 14:50 UTC50m
2026-07-22 DAL2653 LAX → LAS Jul 22, 04:25 UTCJul 22, 05:05 UTC40m
2026-07-22 DAL2288 DTW → MSP Jul 22, 02:20 UTCJul 22, 03:00 UTC40m
2026-07-21 DAL711 PDX → ATL Jul 21, 21:15 UTCJul 22, 00:50 UTC3h 35m
2026-07-21 DAL1963 CUN → ATL Jul 21, 16:05 UTCJul 21, 18:30 UTC2h 25m
2026-07-21 DAL1964 ATL → CUN Jul 21, 12:35 UTCJul 21, 14:45 UTC2h 10m
2026-07-21 DAL1964 ATL → CUN Jul 21, 12:32 UTCJul 21, 14:43 UTC2h 11m
2026-07-21 DAL2966 ORF → ATL Jul 21, 09:25 UTCJul 21, 10:40 UTC1h 15m
2026-07-21 DAL2731 ATL → ORF Jul 21, 04:00 UTCJul 21, 05:25 UTC1h 25m
2026-07-21 DAL1097 BOS → RSW Jul 21, 01:45 UTCJul 21, 02:40 UTC55m
2026-07-20 DAL1097 BOS → RSW Jul 20, 22:05 UTCJul 20, 23:15 UTC1h 10m
2026-07-20 DAL1273 GMU → ATL Jul 20, 19:50 UTCJul 20, 20:20 UTC30m
2026-07-20 DAL1273 - Jul 20, 17:45 UTCJul 20, 18:15 UTC30m
2026-07-20 DAL1571 STL → ATL Jul 20, 14:30 UTCJul 20, 15:40 UTC1h 10m
2026-07-20 DAL1571 STL → ATL Jul 20, 14:30 UTCJul 20, 15:36 UTC1h 6m
2026-07-20 DAL1571 ATL → STL Jul 20, 11:55 UTCJul 20, 13:05 UTC1h 10m
2026-07-19 DAL2978 MSP → YYC Jul 19, 23:40 UTCJul 20, 00:15 UTC35m
2026-07-19 DAL2978 MSP → YYC Jul 19, 17:40 UTCJul 19, 19:20 UTC1h 40m
2026-07-19 DAL2978 MSP → YYC Jul 19, 14:00 UTCJul 19, 15:15 UTC1h 15m
2026-07-19 DAL2933 - Jul 19, 10:30 UTCJul 19, 12:25 UTC1h 55m
2026-07-19 DAL1011 ATL → BDL Jul 19, 02:00 UTCJul 19, 04:10 UTC2h 10m
2026-07-18 DAL1002 - Jul 18, 21:05 UTCJul 19, 00:20 UTC3h 15m
2026-07-18 DAL1002 - Jul 18, 16:30 UTCJul 18, 18:50 UTC2h 20m
2026-07-18 DAL2161 - Jul 18, 13:10 UTCJul 18, 14:45 UTC1h 35m
2026-07-18 DAL2210 ATL → GRR Jul 18, 01:28 UTCJul 18, 03:07 UTC1h 39m
2026-07-18 DAL2210 ATL → GRR Jul 18, 01:30 UTCJul 18, 03:10 UTC1h 41m
2026-07-17 DAL2720 - Jul 17, 22:35 UTCJul 17, 23:30 UTC55m
2026-07-17 DAL2720 ATL → JAX Jul 17, 19:49 UTCJul 17, 20:35 UTC45m
2026-07-17 DAL2835 YYZ → ATL Jul 17, 16:19 UTCJul 17, 18:05 UTC1h 45m
2026-07-17 DAL2957 ATL → AUS Jul 17, 12:55 UTCJul 17, 14:44 UTC1h 50m

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 N831DN page for operator, model, and routing details .

Mode-S AB5C69 frequently asked

What is Mode-S code AB5C69?
AB5C69 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N831DN.
Where is Mode-S AB5C69 registered?
Mode-S code AB5C69 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 AB5C69 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 AB5C69, octal 52656151, decimal 11,230,313.
What flights does AB5C69 operate?
Mode-S AB5C69 has broadcast 20 distinct callsigns, including DAL2078, DAL2711, DAL1401, DAL1468, DAL2879.