Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACE9BA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N931DQ · operated by DELTA AIR LINES INC

Hex
ACE9BA
Octal
53164672
Decimal
11,332,026
Country
US
Tail
N931DQ
Type
B739
Broadcasting now · callsign DAL1393 · 35,000 ft
Flights observed
634
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

ACE9BA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ACE9BA 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
DAL2542 - 28 2026-07-10
DAL3035 - 17 2026-07-13
DAL2052 Delta Air Lines 16 2026-06-28
DAL3195 - 13 2026-07-08
DAL1393 - 13 2026-07-13
DAL880 Delta Air Lines 12 2026-06-03
DAL2071 Delta Air Lines 12 2026-06-18
DAL2952 - 11 2026-07-05
DAL2867 - 11 2026-07-07
DAL2545 Delta Air Lines 11 2026-06-05
DAL2522 - 11 2026-07-04
DAL3069 Delta Air Lines 9 2026-06-16
DAL3054 Delta Air Lines 9 2026-06-03
DAL2711 Delta Air Lines 9 2026-06-04
DAL2600 Delta Air Lines 9 2026-05-17
DAL1345 - 9 2026-07-12
DAL527 - 8 2026-06-27
DAL3196 - 8 2026-07-03
DAL3126 Delta Air Lines 8 2026-06-27
DAL3059 Delta Air Lines 8 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DAL1393 ATL → STL Jul 13, 23:00 UTCJul 14, 00:20 UTC1h 20m
2026-07-13 DAL1148 - Jul 13, 20:35 UTCJul 13, 21:20 UTC45m
2026-07-13 DAL1148 - Jul 13, 18:20 UTCJul 13, 18:50 UTC30m
2026-07-13 DAL3035 - Jul 13, 15:40 UTCJul 13, 16:35 UTC55m
2026-07-13 DAL3035 - Jul 13, 13:10 UTCJul 13, 14:05 UTC55m
2026-07-13 DAL1547 MSY → ATL Jul 13, 10:35 UTCJul 13, 11:50 UTC1h 15m
2026-07-13 DAL2224 ATL → MSY Jul 13, 05:05 UTCJul 13, 06:10 UTC1h 5m
2026-07-13 DAL2224 ATL → MSY Jul 13, 05:06 UTCJul 13, 06:09 UTC1h 3m
2026-07-13 DAL1490 - Jul 13, 01:50 UTCJul 13, 02:30 UTC40m
2026-07-13 DAL1490 BNA → ATL Jul 13, 01:51 UTCJul 13, 02:29 UTC38m
2026-07-12 DAL1490 ATL → BNA Jul 12, 23:50 UTCJul 13, 00:35 UTC45m
2026-07-12 DAL1345 - Jul 12, 20:40 UTCJul 12, 22:00 UTC1h 20m
2026-07-12 DAL1345 ATL → PIT Jul 12, 16:25 UTCJul 12, 17:35 UTC1h 10m
2026-07-12 DAL1674 - Jul 12, 14:01 UTCJul 12, 14:40 UTC40m
2026-07-12 DAL2494 - Jul 12, 01:40 UTCJul 12, 02:15 UTC35m
2026-07-12 DAL2494 ATL → ECP Jul 12, 01:39 UTCJul 12, 02:17 UTC38m
2026-07-11 DAL1041 - Jul 11, 22:50 UTCJul 11, 23:45 UTC55m
2026-07-11 DAL1041 ATL → RDU Jul 11, 19:00 UTCJul 11, 20:00 UTC1h 0m
2026-07-11 DAL3035 - Jul 11, 15:40 UTCJul 11, 16:40 UTC1h 0m
2026-07-11 DAL3035 - Jul 11, 13:05 UTCJul 11, 14:05 UTC1h 0m
2026-07-11 DAL1547 MSY → ATL Jul 11, 10:30 UTCJul 11, 11:35 UTC1h 5m
2026-07-11 DAL1547 MSY → ATL Jul 11, 10:31 UTCJul 11, 11:35 UTC1h 4m
2026-07-11 DAL2224 ATL → MSY Jul 11, 04:15 UTCJul 11, 05:20 UTC1h 5m
2026-07-11 DAL1393 STL → ATL Jul 11, 00:15 UTCJul 11, 01:40 UTC1h 25m
2026-07-10 DAL1393 ATL → STL Jul 10, 21:55 UTCJul 10, 23:05 UTC1h 10m
2026-07-10 DAL2542 MSY → ATL Jul 10, 17:50 UTCJul 10, 18:55 UTC1h 5m
2026-07-10 DAL2542 ATL → MSY Jul 10, 15:20 UTCJul 10, 16:25 UTC1h 5m
2026-07-10 DAL1674 - Jul 10, 13:10 UTCJul 10, 13:50 UTC40m
2026-07-10 DAL2494 - Jul 10, 00:50 UTCJul 10, 01:25 UTC35m
2026-07-09 DAL1353 - Jul 9, 21:05 UTCJul 9, 22:35 UTC1h 30m
2026-07-09 DAL1353 - Jul 9, 18:20 UTCJul 9, 19:35 UTC1h 15m
2026-07-09 DAL3035 - Jul 9, 15:45 UTCJul 9, 16:45 UTC1h 0m
2026-07-09 DAL3035 - Jul 9, 13:20 UTCJul 9, 14:15 UTC55m
2026-07-09 DAL1547 MSY → ATL Jul 9, 10:30 UTCJul 9, 11:30 UTC1h 0m
2026-07-09 DAL1450 ATL → MSY Jul 9, 00:05 UTCJul 9, 01:10 UTC1h 5m
2026-07-08 DAL3195 - Jul 8, 20:50 UTCJul 8, 21:45 UTC55m
2026-07-08 DAL3195 SDF → ATL Jul 8, 20:46 UTCJul 8, 21:45 UTC59m
2026-07-08 DAL3195 - Jul 8, 18:35 UTCJul 8, 19:25 UTC50m
2026-07-08 DAL3035 - Jul 8, 15:45 UTCJul 8, 16:45 UTC1h 0m
2026-07-08 DAL3035 DAB → ATL Jul 8, 15:42 UTCJul 8, 16:39 UTC57m
2026-07-08 DAL3035 - Jul 8, 13:10 UTCJul 8, 14:05 UTC55m
2026-07-08 DAL3085 - Jul 8, 11:15 UTCJul 8, 12:00 UTC45m
2026-07-08 DAL3097 - Jul 8, 03:25 UTCJul 8, 04:05 UTC40m
2026-07-07 DAL1660 MCI → ATL Jul 7, 23:10 UTCJul 8, 00:50 UTC1h 40m
2026-07-07 DAL1660 MCI → ATL Jul 7, 23:07 UTCJul 8, 00:43 UTC1h 36m
2026-07-07 DAL1660 MCI → ATL Jul 7, 20:30 UTCJul 7, 22:05 UTC1h 35m
2026-07-07 DAL2867 - Jul 7, 17:55 UTCJul 7, 18:35 UTC40m
2026-07-07 DAL2867 ATL → BNA Jul 7, 15:55 UTCJul 7, 16:35 UTC40m
2026-07-07 DAL3067 PNS → ATL Jul 7, 13:10 UTCJul 7, 13:50 UTC40m
2026-07-07 DAL3086 - Jul 7, 01:50 UTCJul 7, 02:30 UTC40m

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 N931DQ page for operator, model, and routing details .

Mode-S ACE9BA frequently asked

What is Mode-S code ACE9BA?
ACE9BA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N931DQ.
Where is Mode-S ACE9BA registered?
Mode-S code ACE9BA 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 ACE9BA broadcasting right now?
Yes. Mode-S ACE9BA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACE9BA, octal 53164672, decimal 11,332,026.
What flights does ACE9BA operate?
Mode-S ACE9BA has broadcast 20 distinct callsigns, including DAL2542, DAL3035, DAL2052, DAL3195, DAL1393.