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 1h ago
Flights observed
337
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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
DAL2171 Delta Air Lines 7 2026-05-30
DAL1873 Delta Air Lines 7 2026-06-09
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
DAL918 Delta Air Lines 4 2026-07-02
DAL842 - 4 2026-06-23
DAL315 Delta Air Lines 4 2026-06-14
DAL2559 Delta Air Lines 4 2026-05-30
DAL1946 Delta Air Lines 4 2026-05-02
DAL1902 Delta Air Lines 4 2026-05-07
DAL1889 - 4 2026-07-12
DAL1887 Delta Air Lines 4 2026-05-01
DAL1831 - 4 2026-07-07
DAL1830 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1107 - Jul 14, 01:55 UTCJul 14, 03:00 UTC1h 5m
2026-07-13 DAL466 LAS → ATL Jul 13, 20:40 UTCJul 14, 00:20 UTC3h 40m
2026-07-13 DAL466 ATL → LAS Jul 13, 15:10 UTCJul 13, 18:40 UTC3h 30m
2026-07-13 DAL2286 JFK → ATL Jul 13, 12:00 UTCJul 13, 13:40 UTC1h 40m
2026-07-12 DAL1768 - Jul 12, 20:35 UTCJul 13, 00:05 UTC3h 30m
2026-07-12 DAL1889 - Jul 12, 15:45 UTCJul 12, 19:05 UTC3h 20m
2026-07-12 DAL744 TPA → ATL Jul 12, 12:55 UTCJul 12, 13:55 UTC1h 0m
2026-07-11 DAL2385 MSP → TPA Jul 11, 21:40 UTCJul 12, 00:25 UTC2h 45m
2026-07-11 DAL1047 PHX → MSP Jul 11, 17:45 UTCJul 11, 20:20 UTC2h 35m
2026-07-11 DAL1047 MSP → PHX Jul 11, 12:40 UTCJul 11, 15:20 UTC2h 40m
2026-07-10 DAL377 ANC → MSP Jul 10, 07:00 UTCJul 10, 11:50 UTC4h 50m
2026-07-09 DAL377 MSP → ANC Jul 9, 23:45 UTCJul 10, 04:55 UTC5h 10m
2026-07-09 DAL2272 LAS → MSP Jul 9, 18:55 UTCJul 9, 21:20 UTC2h 25m
2026-07-09 DAL2272 LAS → MSP Jul 9, 18:53 UTCJul 9, 21:20 UTC2h 27m
2026-07-09 DAL497 JFK → LAX Jul 9, 12:05 UTCJul 9, 17:05 UTC5h 0m
2026-07-09 DAL2614 MSP → BOS Jul 9, 01:30 UTCJul 9, 03:55 UTC2h 25m
2026-07-08 DAL2238 JFK → MIA Jul 8, 20:55 UTCJul 8, 23:25 UTC2h 30m
2026-07-08 DAL2238 JFK → MIA Jul 8, 16:25 UTCJul 8, 19:20 UTC2h 55m
2026-07-08 DAL2263 TPA → MSP Jul 8, 12:00 UTCJul 8, 14:55 UTC2h 55m
2026-07-08 DAL1720 ATL → TPA Jul 8, 00:15 UTCJul 8, 01:15 UTC1h 0m
2026-07-07 DAL1831 GUA → ATL Jul 7, 19:15 UTCJul 7, 22:15 UTC3h 0m
2026-07-07 DAL1830 - Jul 7, 17:20 UTCJul 7, 17:30 UTC10m
2026-07-07 DAL1830 - Jul 7, 14:20 UTCJul 7, 16:50 UTC2h 30m
2026-07-07 DAL2286 JFK → ATL Jul 7, 10:20 UTCJul 7, 12:05 UTC1h 45m
2026-07-06 DAL689 LAS → JFK Jul 6, 23:35 UTCJul 7, 03:55 UTC4h 20m
2026-07-06 DAL549 ATL → LGA Jul 6, 18:25 UTCJul 6, 22:05 UTC3h 40m
2026-07-06 DAL755 LAS → ATL Jul 6, 13:40 UTCJul 6, 17:05 UTC3h 25m
2026-07-06 DAL781 JFK → LAS Jul 6, 05:25 UTCJul 6, 10:15 UTC4h 50m
2026-07-05 DAL1768 - Jul 5, 21:50 UTCJul 6, 01:25 UTC3h 35m
2026-07-05 DAL1883 STT → JFK Jul 5, 16:25 UTCJul 5, 19:35 UTC3h 10m
2026-07-05 DAL1261 - Jul 5, 12:40 UTCJul 5, 14:00 UTC1h 20m
2026-07-05 DAL1261 MIA → ATL Jul 5, 12:37 UTCJul 5, 14:02 UTC1h 25m
2026-07-05 DAL1588 ATL → MIA Jul 5, 01:00 UTCJul 5, 02:25 UTC1h 25m
2026-07-05 DAL1588 ATL → MIA Jul 5, 00:58 UTCJul 5, 02:20 UTC1h 22m
2026-07-04 DAL1831 GUA → ATL Jul 4, 19:10 UTCJul 4, 22:05 UTC2h 55m
2026-07-04 DAL1830 ATL → GUA Jul 4, 14:20 UTCJul 4, 17:10 UTC2h 50m
2026-07-03 DAL591 STT → JFK Jul 3, 22:35 UTCJul 4, 02:10 UTC3h 35m
2026-07-03 DAL421 - Jul 3, 17:15 UTCJul 3, 21:10 UTC3h 55m
2026-07-03 DAL1298 ATL → DTW Jul 3, 13:35 UTCJul 3, 15:00 UTC1h 25m
2026-07-03 DAL391 - Jul 3, 06:10 UTCJul 3, 09:55 UTC3h 45m
2026-07-03 DAL391 - Jul 3, 00:25 UTCJul 3, 04:40 UTC4h 15m
2026-07-02 DAL1413 - Jul 2, 21:05 UTCJul 2, 22:25 UTC1h 20m
2026-07-02 DAL1413 ATL → FLL Jul 2, 18:05 UTCJul 2, 19:30 UTC1h 25m
2026-07-02 DAL918 PHX → DTW Jul 2, 12:55 UTCJul 2, 15:55 UTC3h 0m
2026-07-02 DAL8852 - Jul 2, 06:15 UTCJul 2, 07:05 UTC50m
2026-07-02 DAL8887 - Jul 2, 00:05 UTCJul 2, 04:00 UTC3h 55m
2026-07-02 DAL8887 ORD → LAX Jul 2, 00:05 UTCJul 2, 03:54 UTC3h 49m
2026-07-01 DAL8887 ATL → ORD Jul 1, 17:45 UTCJul 1, 19:15 UTC1h 30m
2026-07-01 DAL2856 - Jul 1, 14:45 UTCJul 1, 16:10 UTC1h 25m
2026-07-01 DAL1646 ATL → DTW Jul 1, 11:40 UTCJul 1, 13:05 UTC1h 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 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 1h ago.
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, DAL2171, DAL1873, DAL836, DAL796.