Apparatus

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sensors Mode-S transponder

ABFE1C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N872DN · BOEING 737-900 · operated by UMB BANK NA TRUSTEE

Hex
ABFE1C
Octal
52777034
Decimal
11,271,708
Country
US
Tail
N872DN
Type
B739
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
501
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S ABFE1C.

Country allocation

The ICAO 24-bit address ABFE1C 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
DAL3157 - 8 2026-07-01
DAL1925 Delta Air Lines 7 2026-06-20
DAL1456 - 7 2026-06-25
DAL933 Delta Air Lines 6 2026-05-26
DAL672 Delta Air Lines 6 2026-05-22
DAL2261 Delta Air Lines 5 2026-06-24
DAL1766 Delta Air Lines 5 2026-06-22
DAL1757 Delta Air Lines 5 2026-05-10
DAL1599 Delta Air Lines 5 2026-06-12
DAL1542 - 5 2026-06-22
DAL1274 Delta Air Lines 5 2026-06-12
DAL1226 - 5 2026-06-19
DAL868 Delta Air Lines 4 2026-06-15
DAL654 Delta Air Lines 4 2026-05-26
DAL466 Delta Air Lines 4 2026-05-17
DAL402 - 4 2026-06-11
DAL2843 - 4 2026-06-14
DAL2711 - 4 2026-04-13
DAL2652 - 4 2026-07-16
DAL2348 Delta Air Lines 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1643 ATL → MSN Jul 26, 17:55 UTCJul 26, 21:10 UTC3h 15m
2026-07-26 DAL1411 JAX → JFK Jul 26, 12:50 UTCJul 26, 16:20 UTC3h 30m
2026-07-25 DAL1233 JFK → AUS Jul 25, 22:15 UTCJul 26, 01:25 UTC3h 10m
2026-07-25 DAL1918 NAS → JFK Jul 25, 12:40 UTCJul 25, 20:10 UTC7h 30m
2026-07-25 DAL2611 ATL → EWR Jul 25, 10:20 UTCJul 25, 11:10 UTC50m
2026-07-25 DAL2639 EWR → ATL Jul 25, 02:30 UTCJul 25, 03:15 UTC45m
2026-07-24 DAL2378 SMF → SEA Jul 24, 22:45 UTCJul 25, 00:30 UTC1h 45m
2026-07-24 DAL2378 SMF → SEA Jul 24, 22:40 UTCJul 25, 00:24 UTC1h 44m
2026-07-24 DAL1965 NAS → ATL Jul 24, 18:05 UTCJul 24, 19:35 UTC1h 30m
2026-07-24 DAL1965 NAS → ATL Jul 24, 17:50 UTCJul 24, 19:47 UTC1h 57m
2026-07-24 DAL1944 ATL → NAS Jul 24, 14:50 UTCJul 24, 16:10 UTC1h 20m
2026-07-24 DAL1364 MIA → MCO Jul 24, 10:30 UTCJul 24, 11:45 UTC1h 15m
2026-07-24 DAL2984 ATL → ORF Jul 24, 00:25 UTCJul 24, 01:35 UTC1h 10m
2026-07-23 DAL2700 BDL → ATL Jul 23, 21:05 UTCJul 23, 22:10 UTC1h 5m
2026-07-23 DAL2700 BDL → ATL Jul 23, 18:25 UTCJul 23, 19:35 UTC1h 10m
2026-07-23 DAL2356 - Jul 23, 16:00 UTCJul 23, 16:45 UTC45m
2026-07-23 DAL2356 - Jul 23, 13:45 UTCJul 23, 14:30 UTC45m
2026-07-23 DAL3114 - Jul 23, 11:15 UTCJul 23, 11:55 UTC40m
2026-07-23 DAL3114 - Jul 23, 11:14 UTCJul 23, 12:01 UTC47m
2026-07-23 DAL3131 - Jul 23, 03:35 UTCJul 23, 04:15 UTC40m
2026-07-22 DAL2430 RSW → JFK Jul 22, 23:25 UTCJul 23, 01:10 UTC1h 45m
2026-07-22 DAL2340 MCI → DTW Jul 22, 20:05 UTCJul 22, 21:50 UTC1h 45m
2026-07-22 DAL2340 MCI → DTW Jul 22, 20:03 UTCJul 22, 21:40 UTC1h 37m
2026-07-22 DAL662 BNA → LGA Jul 22, 13:55 UTCJul 22, 18:10 UTC4h 15m
2026-07-22 DAL662 BNA → LGA Jul 22, 13:52 UTCJul 22, 17:56 UTC4h 4m
2026-07-21 DAL503 BOS → ATL Jul 21, 21:15 UTCJul 22, 01:45 UTC4h 30m
2026-07-21 DAL566 DFW → LGA Jul 21, 18:30 UTCJul 21, 19:00 UTC30m
2026-07-21 DAL566 DFW → LGA Jul 21, 18:28 UTCJul 21, 19:32 UTC1h 4m
2026-07-21 DAL566 DFW → LGA Jul 21, 15:55 UTCJul 21, 17:05 UTC1h 10m
2026-07-21 DAL1074 MSP → LGA Jul 21, 12:15 UTCJul 21, 14:35 UTC2h 20m
2026-07-21 DAL971 MSP → CMH Jul 21, 04:10 UTCJul 21, 05:20 UTC1h 10m
2026-07-21 DAL971 MSP → CMH Jul 21, 00:15 UTCJul 21, 02:05 UTC1h 50m
2026-07-20 DAL1804 GDL → ATL Jul 20, 19:30 UTCJul 20, 22:05 UTC2h 35m
2026-07-20 DAL1992 ATL → GDL Jul 20, 14:10 UTCJul 20, 16:30 UTC2h 20m
2026-07-20 DAL1992 ATL → GDL Jul 20, 14:09 UTCJul 20, 17:06 UTC2h 57m
2026-07-20 DAL1565 - Jul 20, 10:45 UTCJul 20, 11:45 UTC1h 0m
2026-07-20 DAL1565 LIT → ATL Jul 20, 10:40 UTCJul 20, 11:52 UTC1h 12m
2026-07-20 DAL2701 ATL → LIT Jul 20, 01:51 UTCJul 20, 02:54 UTC1h 3m
2026-07-20 DAL2701 - Jul 20, 01:55 UTCJul 20, 02:50 UTC55m
2026-07-19 DAL2152 - Jul 19, 22:25 UTCJul 20, 00:00 UTC1h 35m
2026-07-19 DAL2152 MKE → ATL Jul 19, 22:22 UTCJul 19, 23:57 UTC1h 35m
2026-07-19 DAL2152 ATL → MKE Jul 19, 19:20 UTCJul 19, 21:05 UTC1h 45m
2026-07-19 DAL2071 MSP → LAS Jul 19, 15:45 UTCJul 19, 16:35 UTC50m
2026-07-19 DAL2071 MSP → LAS Jul 19, 13:25 UTCJul 19, 14:15 UTC50m
2026-07-19 DAL3004 - Jul 19, 10:45 UTCJul 19, 11:30 UTC45m
2026-07-19 DAL1617 - Jul 19, 03:20 UTCJul 19, 04:15 UTC55m
2026-07-19 DAL1617 ATL → GSO Jul 19, 03:20 UTCJul 19, 04:14 UTC54m
2026-07-18 DAL1820 - Jul 18, 23:40 UTCJul 18, 23:45 UTC5m
2026-07-18 DAL1820 LIR → ATL Jul 18, 19:27 UTCJul 18, 23:24 UTC3h 57m
2026-07-18 DAL1820 ATL → ATL Jul 18, 14:20 UTCJul 18, 23:45 UTC9h 25m

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 N872DN page for operator, model, and routing details .

Mode-S ABFE1C frequently asked

What is Mode-S code ABFE1C?
ABFE1C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N872DN.
Where is Mode-S ABFE1C registered?
Mode-S code ABFE1C 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 ABFE1C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFE1C, octal 52777034, decimal 11,271,708.
What flights does ABFE1C operate?
Mode-S ABFE1C has broadcast 20 distinct callsigns, including DAL3157, DAL1925, DAL1456, DAL933, DAL672.