Apparatus

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sensors Mode-S transponder

ABB68C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N854DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
ABB68C
Octal
52733214
Decimal
11,253,388
Country
US
Tail
N854DN
Type
B739
No current signal · last broadcast 3h ago
Flights observed
456
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S ABB68C.

Country allocation

The ICAO 24-bit address ABB68C 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
DAL2071 - 7 2026-07-07
DAL2711 - 6 2026-06-28
DAL2215 Delta Air Lines 5 2026-04-13
DAL866 Delta Air Lines 4 2026-05-05
DAL809 - 4 2026-07-03
DAL743 Delta Air Lines 4 2026-04-18
DAL719 - 4 2026-07-07
DAL640 Delta Air Lines 4 2026-05-10
DAL560 - 4 2026-07-11
DAL2500 Delta Air Lines 4 2026-06-11
DAL2205 Delta Air Lines 4 2026-06-02
DAL1928 - 4 2026-06-30
DAL1696 Delta Air Lines 4 2026-05-02
DAL1542 - 4 2026-04-16
DAL1178 - 4 2026-07-12
DAL963 Delta Air Lines 3 2026-04-21
DAL902 Delta Air Lines 3 2026-05-01
DAL864 Delta Air Lines 3 2026-05-25
DAL756 Delta Air Lines 3 2026-04-17
DAL689 Delta Air Lines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL3168 ATL → SAV Jul 14, 02:01 UTCJul 14, 02:45 UTC44m
2026-07-14 DAL3168 ATL → SAV Jul 14, 02:05 UTCJul 14, 02:45 UTC40m
2026-07-13 DAL3112 SAV → ATL Jul 13, 23:25 UTCJul 14, 00:10 UTC45m
2026-07-13 DAL3112 SAV → ATL Jul 13, 23:25 UTCJul 14, 00:09 UTC44m
2026-07-13 DAL3112 ATL → SAV Jul 13, 21:15 UTCJul 13, 22:05 UTC50m
2026-07-13 DAL2342 JFK → ATL Jul 13, 17:45 UTCJul 13, 19:35 UTC1h 50m
2026-07-13 DAL1034 ATL → JFK Jul 13, 14:25 UTCJul 13, 16:15 UTC1h 50m
2026-07-13 DAL1034 ATL → JFK Jul 13, 14:24 UTCJul 13, 16:16 UTC1h 52m
2026-07-13 DAL2838 CLE → ATL Jul 13, 11:25 UTCJul 13, 12:45 UTC1h 20m
2026-07-13 DAL2838 CLE → ATL Jul 13, 11:25 UTCJul 13, 12:49 UTC1h 24m
2026-07-13 DAL2150 - Jul 13, 02:25 UTCJul 13, 03:30 UTC1h 5m
2026-07-12 DAL2739 - Jul 12, 22:05 UTCJul 13, 00:05 UTC2h 0m
2026-07-12 DAL2739 ATL → BDL Jul 12, 18:25 UTCJul 12, 20:35 UTC2h 10m
2026-07-12 DAL1178 ORD → ATL Jul 12, 15:05 UTCJul 12, 16:25 UTC1h 20m
2026-07-12 DAL1178 - Jul 12, 11:55 UTCJul 12, 13:35 UTC1h 40m
2026-07-11 DAL560 SEA → ATL Jul 11, 23:20 UTCJul 12, 03:45 UTC4h 25m
2026-07-11 DAL629 ATL → SEA Jul 11, 16:45 UTCJul 11, 21:25 UTC4h 40m
2026-07-11 DAL1741 - Jul 11, 12:30 UTCJul 11, 15:00 UTC2h 30m
2026-07-10 DAL1713 - Jul 10, 23:50 UTCJul 11, 02:10 UTC2h 20m
2026-07-10 DAL1480 JFK → ATL Jul 10, 20:22 UTCJul 10, 22:21 UTC1h 59m
2026-07-10 DAL1480 JFK → ATL Jul 10, 20:25 UTCJul 10, 22:20 UTC1h 55m
2026-07-10 DAL1520 - Jul 10, 15:45 UTCJul 10, 18:05 UTC2h 20m
2026-07-10 DAL2347 LGA → MIA Jul 10, 11:30 UTCJul 10, 13:50 UTC2h 20m
2026-07-10 DAL2300 - Jul 10, 02:25 UTCJul 10, 04:40 UTC2h 15m
2026-07-09 DAL2300 LGA → MIA Jul 9, 21:55 UTCJul 10, 01:00 UTC3h 5m
2026-07-09 DAL770 TPA → LGA Jul 9, 15:35 UTCJul 9, 18:35 UTC3h 0m
2026-07-09 DAL2531 LGA → TPA Jul 9, 11:31 UTCJul 9, 13:46 UTC2h 15m
2026-07-09 DAL2531 LGA → TPA Jul 9, 11:35 UTCJul 9, 13:55 UTC2h 20m
2026-07-08 DAL2454 TPA → LGA Jul 8, 23:10 UTCJul 9, 02:00 UTC2h 50m
2026-07-08 DAL2093 - Jul 8, 18:50 UTCJul 8, 21:05 UTC2h 15m
2026-07-08 DAL2380 ATL → JFK Jul 8, 15:30 UTCJul 8, 17:10 UTC1h 40m
2026-07-08 DAL2380 ATL → JFK Jul 8, 15:26 UTCJul 8, 17:10 UTC1h 44m
2026-07-08 DAL2161 TPA → JFK Jul 8, 12:10 UTCJul 8, 13:45 UTC1h 35m
2026-07-08 DAL2210 ATL → GRR Jul 8, 00:05 UTCJul 8, 01:50 UTC1h 45m
2026-07-07 DAL2700 STL → ATL Jul 7, 21:10 UTCJul 7, 22:25 UTC1h 15m
2026-07-07 DAL2700 ATL → STL Jul 7, 18:15 UTCJul 7, 19:35 UTC1h 20m
2026-07-07 DAL2071 - Jul 7, 15:50 UTCJul 7, 16:40 UTC50m
2026-07-07 DAL2071 - Jul 7, 13:15 UTCJul 7, 14:05 UTC50m
2026-07-07 DAL2407 - Jul 7, 10:10 UTCJul 7, 11:05 UTC55m
2026-07-07 DAL2624 ATL → SDF Jul 7, 03:15 UTCJul 7, 04:05 UTC50m
2026-07-07 DAL719 - Jul 7, 00:20 UTCJul 7, 01:00 UTC40m
2026-07-06 DAL719 ATL → BNA Jul 6, 22:05 UTCJul 6, 22:40 UTC35m
2026-07-06 DAL1082 - Jul 6, 18:25 UTCJul 6, 20:25 UTC2h 0m
2026-07-06 DAL1082 BDL → ATL Jul 6, 18:23 UTCJul 6, 20:23 UTC2h 0m
2026-07-06 DAL1082 ATL → BDL Jul 6, 15:00 UTCJul 6, 17:05 UTC2h 5m
2026-07-06 DAL1247 ORD → ATL Jul 6, 12:05 UTCJul 6, 13:30 UTC1h 25m
2026-07-06 DAL1199 ATL → ORD Jul 6, 03:19 UTCJul 6, 04:51 UTC1h 32m
2026-07-05 DAL937 MCI → BOS Jul 5, 21:35 UTCJul 6, 00:55 UTC3h 20m
2026-07-05 DAL937 MCI → BOS Jul 5, 17:10 UTCJul 5, 20:25 UTC3h 15m
2026-07-05 DAL2426 EWR → MSP Jul 5, 14:15 UTCJul 5, 15:45 UTC1h 30m

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 N854DN page for operator, model, and routing details .

Mode-S ABB68C frequently asked

What is Mode-S code ABB68C?
ABB68C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N854DN.
Where is Mode-S ABB68C registered?
Mode-S code ABB68C 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 ABB68C broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB68C, octal 52733214, decimal 11,253,388.
What flights does ABB68C operate?
Mode-S ABB68C has broadcast 20 distinct callsigns, including DAL2071, DAL2711, DAL2215, DAL866, DAL809.