Apparatus

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sensors Mode-S transponder

AD3C27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N952AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AD3C27
Octal
53236047
Decimal
11,353,127
Country
US
Tail
N952AT
Type
B712
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
722
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S AD3C27.

Country allocation

The ICAO 24-bit address AD3C27 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
DAL1278 Delta Air Lines 13 2026-05-12
DAL3151 - 8 2026-07-14
DAL3103 Delta Air Lines 8 2026-05-23
DAL2968 Delta Air Lines 8 2026-07-24
DAL2868 - 8 2026-07-18
DAL2814 - 8 2026-07-18
DAL2718 - 8 2026-07-21
DAL2573 - 8 2026-07-01
DAL2381 Delta Air Lines 8 2026-05-20
DAL1546 - 8 2026-07-04
DAL412 Delta Air Lines 7 2026-07-26
DAL3005 - 7 2026-06-25
DAL2741 Delta Air Lines 7 2026-07-22
DAL2048 - 7 2026-07-17
DAL1686 Delta Air Lines 7 2026-07-24
DAL1374 Delta Air Lines 7 2026-04-29
DAL1132 - 7 2026-07-11
DAL1017 - 7 2026-06-28
DAL3173 Delta Air Lines 6 2026-06-18
DAL3063 - 6 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1371 MSY → LGA Jul 26, 19:50 UTCJul 26, 21:00 UTC1h 10m
2026-07-26 DAL1371 MSY → LGA Jul 26, 17:45 UTCJul 26, 18:50 UTC1h 5m
2026-07-26 DAL2884 MSP → SAT Jul 26, 15:15 UTCJul 26, 16:15 UTC1h 0m
2026-07-26 DAL2884 MSP → SAT Jul 26, 13:00 UTCJul 26, 14:00 UTC1h 0m
2026-07-26 DAL1079 BOS → MIA Jul 26, 10:25 UTCJul 26, 11:45 UTC1h 20m
2026-07-26 DAL412 SFO → SEA Jul 26, 01:55 UTCJul 26, 03:05 UTC1h 10m
2026-07-26 DAL412 SFO → SEA Jul 26, 01:51 UTCJul 26, 03:04 UTC1h 13m
2026-07-25 DAL2822 MSP → PHL Jul 25, 23:15 UTCJul 26, 00:25 UTC1h 10m
2026-07-25 DAL2822 MSP → PHL Jul 25, 20:55 UTCJul 25, 22:00 UTC1h 5m
2026-07-25 DAL426 CMH → ATL Jul 25, 17:15 UTCJul 25, 18:50 UTC1h 35m
2026-07-25 DAL426 CMH → ATL Jul 25, 14:15 UTCJul 25, 15:35 UTC1h 20m
2026-07-25 DAL1079 BOS → MIA Jul 25, 10:25 UTCJul 25, 11:45 UTC1h 20m
2026-07-25 DAL412 SFO → SEA Jul 25, 02:00 UTCJul 25, 03:15 UTC1h 15m
2026-07-25 DAL412 SFO → SEA Jul 25, 01:57 UTCJul 25, 03:12 UTC1h 15m
2026-07-24 DAL2822 MSP → PHL Jul 24, 23:15 UTCJul 25, 00:25 UTC1h 10m
2026-07-24 DAL2822 MSP → PHL Jul 24, 21:05 UTCJul 24, 22:10 UTC1h 5m
2026-07-24 DAL844 LAS → CVG Jul 24, 18:40 UTCJul 24, 19:25 UTC45m
2026-07-24 DAL844 LAS → CVG Jul 24, 17:00 UTCJul 24, 17:50 UTC50m
2026-07-24 DAL2968 ATL → IND Jul 24, 14:22 UTCJul 24, 15:38 UTC1h 16m
2026-07-24 DAL2968 ATL → IND Jul 24, 14:25 UTCJul 24, 15:40 UTC1h 15m
2026-07-24 DAL2968 ATL → IND Jul 24, 11:15 UTCJul 24, 12:20 UTC1h 5m
2026-07-24 DAL1686 MSP → ORD Jul 24, 01:05 UTCJul 24, 02:15 UTC1h 10m
2026-07-23 DAL1686 MSP → ORD Jul 23, 22:25 UTCJul 23, 23:35 UTC1h 10m
2026-07-23 DAL1716 ATL → RDU Jul 23, 20:35 UTCJul 23, 21:20 UTC45m
2026-07-23 DAL1716 ATL → RDU Jul 23, 20:33 UTCJul 23, 21:19 UTC46m
2026-07-23 DAL1716 ATL → RDU Jul 23, 18:10 UTCJul 23, 19:10 UTC1h 0m
2026-07-23 DAL2341 DTW → CVG Jul 23, 13:45 UTCJul 23, 14:45 UTC1h 0m
2026-07-23 DAL2341 DTW → CVG Jul 23, 11:25 UTCJul 23, 12:25 UTC1h 0m
2026-07-23 DAL1686 MSP → ORD Jul 23, 00:30 UTCJul 23, 01:40 UTC1h 10m
2026-07-23 DAL1686 MSP → ORD Jul 23, 00:25 UTCJul 23, 01:40 UTC1h 15m
2026-07-22 DAL1686 MSP → ORD Jul 22, 22:10 UTCJul 22, 23:15 UTC1h 5m
2026-07-22 DAL2741 JAN → ATL Jul 22, 19:25 UTCJul 22, 20:45 UTC1h 20m
2026-07-22 DAL2741 JAN → ATL Jul 22, 16:50 UTCJul 22, 18:30 UTC1h 40m
2026-07-22 DAL1639 SJC → ATL Jul 22, 14:15 UTCJul 22, 15:35 UTC1h 20m
2026-07-22 DAL3144 ATL → CLT Jul 22, 11:50 UTCJul 22, 12:30 UTC40m
2026-07-22 DAL3144 ATL → CLT Jul 22, 11:47 UTCJul 22, 12:31 UTC44m
2026-07-22 DAL3116 - Jul 22, 03:05 UTCJul 22, 03:40 UTC35m
2026-07-22 DAL2771 LGA → TPA Jul 22, 00:25 UTCJul 22, 02:00 UTC1h 35m
2026-07-21 DAL2771 LGA → TPA Jul 21, 21:25 UTCJul 21, 22:45 UTC1h 20m
2026-07-21 DAL2718 - Jul 21, 19:10 UTCJul 21, 20:05 UTC55m
2026-07-21 DAL2718 GPT → ATL Jul 21, 19:07 UTCJul 21, 19:59 UTC52m
2026-07-21 DAL2718 - Jul 21, 17:05 UTCJul 21, 17:55 UTC50m
2026-07-21 DAL376 - Jul 21, 14:40 UTCJul 21, 15:40 UTC1h 0m
2026-07-21 DAL376 - Jul 21, 12:20 UTCJul 21, 13:10 UTC50m
2026-07-21 DAL3186 MEM → ATL Jul 21, 09:40 UTCJul 21, 10:20 UTC40m
2026-07-21 DAL2352 - Jul 21, 00:45 UTCJul 21, 02:05 UTC1h 20m
2026-07-21 DAL2352 DTW → CLT Jul 21, 00:42 UTCJul 21, 01:54 UTC1h 12m
2026-07-20 DAL2826 SLC → CVG Jul 20, 16:20 UTCJul 20, 17:45 UTC1h 25m
2026-07-20 DAL2826 SLC → CVG Jul 20, 13:55 UTCJul 20, 15:15 UTC1h 20m
2026-07-20 DAL2596 PHL → ATL Jul 20, 11:35 UTCJul 20, 12:45 UTC1h 10m

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 N952AT page for operator, model, and routing details .

Mode-S AD3C27 frequently asked

What is Mode-S code AD3C27?
AD3C27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N952AT.
Where is Mode-S AD3C27 registered?
Mode-S code AD3C27 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 AD3C27 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3C27, octal 53236047, decimal 11,353,127.
What flights does AD3C27 operate?
Mode-S AD3C27 has broadcast 20 distinct callsigns, including DAL1278, DAL3151, DAL3103, DAL2968, DAL2868.