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 1h ago
Flights observed
442
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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
DAL574 Delta Air Lines 4 2026-05-30
DAL3097 Delta Air Lines 4 2026-05-03
DAL2791 Delta Air Lines 4 2026-05-18
DAL2700 Delta Air Lines 4 2026-06-21
DAL2607 Delta Air Lines 4 2026-06-14
DAL2415 Delta Air Lines 4 2026-05-14
DAL2313 Delta Air Lines 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL682 ATL → SMF Jul 14, 01:30 UTCJul 14, 05:40 UTC4h 10m
2026-07-13 DAL1820 LIR → ATL Jul 13, 19:31 UTCJul 13, 23:08 UTC3h 37m
2026-07-13 DAL1820 ATL → ATL Jul 13, 14:35 UTCJul 13, 23:05 UTC8h 30m
2026-07-13 DAL3098 SAV → ATL Jul 13, 11:50 UTCJul 13, 12:30 UTC40m
2026-07-13 DAL3168 ATL → SAV Jul 13, 03:15 UTCJul 13, 04:00 UTC45m
2026-07-13 DAL3168 ATL → SAV Jul 13, 03:16 UTCJul 13, 03:56 UTC40m
2026-07-12 DAL874 - Jul 12, 20:50 UTCJul 13, 01:01 UTC4h 10m
2026-07-12 DAL874 - Jul 12, 15:35 UTCJul 12, 19:15 UTC3h 40m
2026-07-12 DAL1247 ORD → ATL Jul 12, 12:10 UTCJul 12, 13:35 UTC1h 25m
2026-07-12 DAL2879 ATL → ORD Jul 12, 00:30 UTCJul 12, 02:05 UTC1h 35m
2026-07-11 DAL539 - Jul 11, 18:45 UTCJul 11, 23:10 UTC4h 25m
2026-07-11 DAL539 ATL → PDX Jul 11, 12:40 UTCJul 11, 17:20 UTC4h 40m
2026-07-11 DAL1383 - Jul 11, 09:55 UTCJul 11, 11:10 UTC1h 15m
2026-07-11 DAL2583 - Jul 11, 01:35 UTCJul 11, 02:50 UTC1h 15m
2026-07-10 DAL1013 - Jul 10, 22:40 UTCJul 10, 23:35 UTC55m
2026-07-10 DAL1013 ATL → PNS Jul 10, 19:10 UTCJul 10, 20:05 UTC55m
2026-07-10 DAL2835 - Jul 10, 16:00 UTCJul 10, 17:45 UTC1h 45m
2026-07-10 DAL2957 ATL → YYZ Jul 10, 12:10 UTCJul 10, 13:50 UTC1h 40m
2026-07-08 DAL1480 - Jul 8, 20:45 UTCJul 8, 22:30 UTC1h 45m
2026-07-08 DAL1520 - Jul 8, 16:05 UTCJul 8, 18:25 UTC2h 20m
2026-07-08 DAL2347 LGA → MIA Jul 8, 12:00 UTCJul 8, 14:25 UTC2h 25m
2026-07-07 DAL2604 DTW → LGA Jul 7, 22:15 UTCJul 8, 00:00 UTC1h 45m
2026-07-07 DAL2604 DTW → LGA Jul 7, 22:15 UTCJul 7, 23:50 UTC1h 35m
2026-07-07 DAL1468 - Jul 7, 18:10 UTCJul 7, 20:40 UTC2h 30m
2026-07-07 DAL1468 MIA → DTW Jul 7, 18:09 UTCJul 7, 20:33 UTC2h 24m
2026-07-07 DAL1468 - Jul 7, 13:35 UTCJul 7, 16:20 UTC2h 45m
2026-07-06 DAL533 - Jul 6, 22:05 UTCJul 7, 01:50 UTC3h 45m
2026-07-06 DAL1656 ANC → SEA Jul 6, 16:20 UTCJul 6, 19:35 UTC3h 15m
2026-07-06 DAL931 SEA → ANC Jul 6, 01:30 UTCJul 6, 04:35 UTC3h 5m
2026-07-05 DAL2905 LAS → SEA Jul 5, 20:55 UTCJul 5, 22:55 UTC2h 0m
2026-07-05 DAL2905 LAS → SEA Jul 5, 20:54 UTCJul 5, 22:55 UTC2h 1m
2026-07-05 DAL2905 SEA → LAS Jul 5, 17:25 UTCJul 5, 19:30 UTC2h 5m
2026-07-05 DAL1418 MSP → SEA Jul 5, 12:10 UTCJul 5, 15:30 UTC3h 20m
2026-07-04 DAL2696 ATL → CAE Jul 4, 19:25 UTCJul 4, 22:25 UTC3h 0m
2026-07-04 DAL2696 ATL → CAE Jul 4, 15:10 UTCJul 4, 17:55 UTC2h 45m
2026-07-04 DAL1129 DEN → MSP Jul 4, 12:15 UTCJul 4, 13:40 UTC1h 25m
2026-07-04 DAL1129 DEN → MSP Jul 4, 12:13 UTCJul 4, 13:40 UTC1h 27m
2026-07-04 DAL2931 MSP → DEN Jul 4, 01:10 UTCJul 4, 03:00 UTC1h 50m
2026-07-03 DAL2981 ATL → MSP Jul 3, 21:20 UTCJul 3, 23:30 UTC2h 10m
2026-07-03 DAL654 SJC → ATL Jul 3, 13:50 UTCJul 3, 18:20 UTC4h 30m
2026-07-03 DAL933 LGA → MCO Jul 3, 01:30 UTCJul 3, 06:05 UTC4h 35m
2026-07-02 DAL924 MSY → ATL Jul 2, 22:30 UTCJul 2, 23:40 UTC1h 10m
2026-07-02 DAL1652 MIA → LGA Jul 2, 19:00 UTCJul 2, 20:55 UTC1h 55m
2026-07-02 DAL772 - Jul 2, 12:55 UTCJul 2, 16:55 UTC4h 0m
2026-07-02 DAL772 SFO → DTW Jul 2, 12:52 UTCJul 2, 16:50 UTC3h 58m
2026-07-02 DAL2986 - Jul 2, 05:35 UTCJul 2, 06:30 UTC55m
2026-07-01 DAL508 - Jul 1, 23:35 UTCJul 2, 04:10 UTC4h 35m
2026-07-01 DAL508 - Jul 1, 17:35 UTCJul 1, 21:50 UTC4h 15m
2026-07-01 DAL1598 HAF → LAX Jul 1, 14:15 UTCJul 1, 15:10 UTC55m
2026-07-01 DAL1598 SFO → LAX Jul 1, 14:11 UTCJul 1, 15:03 UTC52m

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 1h ago.
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.