Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A924FC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N689DL · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A924FC
Octal
52222374
Decimal
11,085,052
Country
US
Tail
N689DL
Type
B752
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
393
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A924FC.

Country allocation

The ICAO 24-bit address A924FC 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
DAL348 - 11 2026-06-23
DAL1831 - 8 2026-07-18
DAL2171 Delta Air Lines 7 2026-05-30
DAL1902 - 7 2026-07-20
DAL1873 Delta Air Lines 7 2026-06-09
DAL1830 - 7 2026-07-18
DAL836 Delta Air Lines 6 2026-06-20
DAL796 - 6 2026-06-30
DAL725 Delta Air Lines 6 2026-05-21
DAL2261 Delta Air Lines 6 2026-05-30
DAL2249 Delta Air Lines 6 2026-05-30
DAL929 - 5 2026-06-23
DAL1894 Delta Air Lines 5 2026-06-09
DAL1889 Delta Air Lines 5 2026-07-22
DAL918 Delta Air Lines 4 2026-07-02
DAL842 - 4 2026-06-23
DAL807 - 4 2026-07-15
DAL625 - 4 2026-07-17
DAL391 - 4 2026-07-15
DAL315 Delta Air Lines 4 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL421 DFW → LGA Jul 26, 16:35 UTCJul 26, 20:10 UTC3h 35m
2026-07-26 DAL1298 ATL → DTW Jul 26, 13:40 UTCJul 26, 15:10 UTC1h 30m
2026-07-25 DAL2569 JAX → ATL Jul 25, 12:30 UTCJul 25, 13:15 UTC45m
2026-07-25 DAL1001 ORD → LGA Jul 25, 02:40 UTCJul 25, 03:25 UTC45m
2026-07-24 DAL1785 UVF → ATL Jul 24, 20:45 UTCJul 25, 00:10 UTC3h 25m
2026-07-24 DAL1785 UVF → ATL Jul 24, 19:55 UTCJul 24, 20:05 UTC10m
2026-07-24 DAL2350 IND → ATL Jul 24, 14:20 UTCJul 24, 17:35 UTC3h 15m
2026-07-24 DAL2350 IND → ATL Jul 24, 14:20 UTCJul 24, 18:22 UTC4h 2m
2026-07-24 DAL2080 MCO → LGA Jul 24, 11:25 UTCJul 24, 12:30 UTC1h 5m
2026-07-24 DAL1735 SEA → DEN Jul 24, 01:10 UTCJul 24, 02:10 UTC1h 0m
2026-07-23 DAL1823 ATL → CVG Jul 23, 20:10 UTCJul 23, 23:25 UTC3h 15m
2026-07-23 DAL1930 JFK → STT Jul 23, 12:33 UTCJul 23, 16:27 UTC3h 54m
2026-07-23 DAL1930 JFK → STT Jul 23, 12:35 UTCJul 23, 16:25 UTC3h 50m
2026-07-22 DAL1768 BOS → LIR Jul 22, 20:55 UTCJul 23, 00:35 UTC3h 40m
2026-07-22 DAL1889 ATL → STT Jul 22, 15:50 UTCJul 22, 19:05 UTC3h 15m
2026-07-22 DAL744 SEA → BOS Jul 22, 13:05 UTCJul 22, 14:05 UTC1h 0m
2026-07-22 DAL1560 PBI → LGA Jul 22, 03:40 UTCJul 22, 04:40 UTC1h 0m
2026-07-21 DAL983 LGA → MSP Jul 21, 20:05 UTCJul 22, 00:25 UTC4h 20m
2026-07-21 DAL983 LGA → MSP Jul 21, 20:01 UTCJul 22, 00:24 UTC4h 23m
2026-07-21 DAL982 ATL → BOG Jul 21, 14:15 UTCJul 21, 18:25 UTC4h 10m
2026-07-21 DAL857 - Jul 21, 07:55 UTCJul 21, 11:25 UTC3h 30m
2026-07-21 DAL825 LGA → MSP Jul 21, 01:35 UTCJul 21, 05:15 UTC3h 40m
2026-07-20 DAL1883 - Jul 20, 20:40 UTCJul 21, 00:00 UTC3h 20m
2026-07-20 DAL1902 - Jul 20, 15:05 UTCJul 20, 18:10 UTC3h 5m
2026-07-20 DAL2569 - Jul 20, 12:35 UTCJul 20, 13:15 UTC40m
2026-07-20 DAL2569 JAX → ATL Jul 20, 12:33 UTCJul 20, 13:17 UTC44m
2026-07-20 DAL1001 ORD → LGA Jul 20, 04:40 UTCJul 20, 05:20 UTC40m
2026-07-20 DAL1001 ORD → LGA Jul 20, 04:36 UTCJul 20, 05:20 UTC44m
2026-07-19 DAL1785 UVF → ATL Jul 19, 22:00 UTCJul 20, 01:20 UTC3h 20m
2026-07-19 DAL2350 - Jul 19, 14:50 UTCJul 19, 18:05 UTC3h 15m
2026-07-19 DAL1611 - Jul 19, 10:50 UTCJul 19, 12:05 UTC1h 15m
2026-07-19 DAL1232 ATL → DTW Jul 19, 00:50 UTCJul 19, 02:20 UTC1h 30m
2026-07-18 DAL1831 - Jul 18, 20:05 UTCJul 18, 22:15 UTC2h 10m
2026-07-18 DAL1831 - Jul 18, 19:15 UTCJul 18, 19:25 UTC10m
2026-07-18 DAL1830 - Jul 18, 17:20 UTCJul 18, 17:30 UTC10m
2026-07-18 DAL1830 - Jul 18, 14:30 UTCJul 18, 16:45 UTC2h 15m
2026-07-18 DAL2286 JFK → ATL Jul 18, 10:20 UTCJul 18, 12:05 UTC1h 45m
2026-07-17 DAL624 - Jul 17, 20:40 UTCJul 18, 01:05 UTC4h 25m
2026-07-17 DAL625 - Jul 17, 13:55 UTCJul 17, 18:10 UTC4h 15m
2026-07-17 DAL498 LAS → JFK Jul 17, 07:44 UTCJul 17, 12:04 UTC4h 20m
2026-07-17 DAL955 - Jul 17, 01:00 UTCJul 17, 02:59 UTC2h 0m
2026-07-17 DAL955 ATL → LAS Jul 17, 00:59 UTCJul 17, 04:30 UTC3h 31m
2026-07-16 DAL1883 - Jul 16, 21:40 UTCJul 16, 23:15 UTC1h 35m
2026-07-16 DAL1883 STT → ATL Jul 16, 19:39 UTCJul 16, 23:13 UTC3h 34m
2026-07-16 DAL1902 - Jul 16, 14:55 UTCJul 16, 16:15 UTC1h 20m
2026-07-16 DAL1902 ATL → STT Jul 16, 14:54 UTCJul 16, 18:06 UTC3h 12m
2026-07-16 DAL965 DTW → ATL Jul 16, 11:40 UTCJul 16, 13:10 UTC1h 30m
2026-07-16 DAL778 LAS → DTW Jul 16, 00:35 UTCJul 16, 04:05 UTC3h 30m
2026-07-15 DAL807 JFK → LAS Jul 15, 16:55 UTCJul 15, 21:15 UTC4h 20m
2026-07-15 DAL2420 ATL → JFK Jul 15, 13:25 UTCJul 15, 15:10 UTC1h 45m

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 N689DL page for operator, model, and routing details .

Mode-S A924FC frequently asked

What is Mode-S code A924FC?
A924FC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N689DL.
Where is Mode-S A924FC registered?
Mode-S code A924FC 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 A924FC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A924FC, octal 52222374, decimal 11,085,052.
What flights does A924FC operate?
Mode-S A924FC has broadcast 20 distinct callsigns, including DAL348, DAL1831, DAL2171, DAL1902, DAL1873.