Apparatus

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sensors Mode-S transponder

AD402F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N953DZ · operated by DELTA AIR LINES INC

Hex
AD402F
Octal
53240057
Decimal
11,354,159
Country
US
Tail
N953DZ
Type
B739
Broadcasting now · callsign DAL1927 · 37,000 ft
Flights observed
293
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Current position

AD402F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD402F 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
DAL566 - 9 2026-07-10
DAL3112 Delta Air Lines 9 2026-04-26
DAL2152 Delta Air Lines 7 2026-04-27
DAL1363 Delta Air Lines 7 2026-04-27
DAL2999 Delta Air Lines 6 2026-04-19
DAL2545 Delta Air Lines 5 2026-04-22
DAL532 Delta Air Lines 4 2026-07-24
DAL3136 Delta Air Lines 4 2026-04-27
DAL3122 Delta Air Lines 4 2026-04-15
DAL3056 Delta Air Lines 4 2026-04-30
DAL2001 Delta Air Lines 4 2026-04-17
DAL1383 - 4 2026-07-16
DAL1236 Delta Air Lines 4 2026-04-26
DAL1206 Delta Air Lines 4 2026-04-25
DAL1146 Delta Air Lines 4 2026-04-27
DAL931 - 3 2026-07-08
DAL775 Delta Air Lines 3 2026-04-29
DAL3125 - 3 2026-04-13
DAL305 Delta Air Lines 3 2026-07-25
DAL2711 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2323 BOS → JAX Jul 26, 17:15 UTCJul 26, 20:25 UTC3h 10m
2026-07-26 DAL2165 MIA → BOS Jul 26, 13:25 UTCJul 26, 15:45 UTC2h 20m
2026-07-26 DAL1414 ATL → BDL Jul 26, 00:20 UTCJul 26, 02:45 UTC2h 25m
2026-07-25 DAL305 HNL → JFK Jul 25, 20:20 UTCJul 25, 22:40 UTC2h 20m
2026-07-25 DAL305 HNL → JFK Jul 25, 20:17 UTCJul 25, 22:32 UTC2h 15m
2026-07-25 DAL305 HNL → JFK Jul 25, 15:35 UTCJul 25, 18:05 UTC2h 30m
2026-07-25 DAL2428 SEA → SAN Jul 25, 11:15 UTCJul 25, 13:40 UTC2h 25m
2026-07-25 DAL1428 JFK → AUS Jul 25, 01:05 UTCJul 25, 03:40 UTC2h 35m
2026-07-24 DAL532 EWR → DTW Jul 24, 18:40 UTCJul 24, 21:45 UTC3h 5m
2026-07-24 DAL532 EWR → DTW Jul 24, 12:55 UTCJul 24, 16:40 UTC3h 45m
2026-07-24 DAL2095 VPS → ATL Jul 24, 00:15 UTCJul 24, 02:40 UTC2h 25m
2026-07-24 DAL2095 VPS → ATL Jul 24, 00:15 UTCJul 24, 02:33 UTC2h 18m
2026-07-23 DAL2404 MSP → BZN Jul 23, 20:15 UTCJul 23, 22:55 UTC2h 40m
2026-07-23 DAL2346 JFK → MIA Jul 23, 15:40 UTCJul 23, 18:10 UTC2h 30m
2026-07-23 DAL1528 LGA → FLL Jul 23, 11:40 UTCJul 23, 14:10 UTC2h 30m
2026-07-22 DAL1643 ATL → MSN Jul 22, 23:35 UTCJul 23, 02:55 UTC3h 20m
2026-07-22 DAL1643 ATL → MSN Jul 22, 18:00 UTCJul 22, 21:25 UTC3h 25m
2026-07-22 DAL1643 ATL → MSN Jul 22, 17:59 UTCJul 22, 21:20 UTC3h 21m
2026-07-22 DAL1411 JAX → JFK Jul 22, 13:05 UTCJul 22, 16:30 UTC3h 25m
2026-07-21 DAL1233 JFK → AUS Jul 21, 02:55 UTCJul 21, 03:25 UTC30m
2026-07-21 DAL1233 JFK → AUS Jul 21, 00:19 UTCJul 21, 03:21 UTC3h 2m
2026-07-21 DAL1233 JFK → AUS Jul 21, 00:20 UTCJul 21, 02:50 UTC2h 30m
2026-07-20 DAL532 DEN → JFK Jul 20, 18:30 UTCJul 20, 21:40 UTC3h 10m
2026-07-20 DAL532 JFK → DEN Jul 20, 13:00 UTCJul 20, 16:35 UTC3h 35m
2026-07-20 DAL2500 - Jul 20, 01:20 UTCJul 20, 04:00 UTC2h 40m
2026-07-20 DAL2500 MIA → JFK Jul 20, 01:15 UTCJul 20, 03:56 UTC2h 41m
2026-07-19 DAL2500 JFK → MIA Jul 19, 20:55 UTCJul 19, 23:40 UTC2h 45m
2026-07-19 DAL732 TPA → JFK Jul 19, 15:20 UTCJul 19, 17:30 UTC2h 10m
2026-07-19 DAL732 TPA → JFK Jul 19, 15:19 UTCJul 19, 17:33 UTC2h 14m
2026-07-18 DAL2195 LGA → TPA Jul 18, 22:10 UTCJul 19, 00:35 UTC2h 25m
2026-07-18 DAL2387 - Jul 18, 11:20 UTCJul 18, 13:45 UTC2h 25m
2026-07-18 DAL2187 JFK → MCO Jul 18, 00:29 UTCJul 18, 03:45 UTC3h 16m
2026-07-17 DAL941 SEA → MSP Jul 17, 19:19 UTCJul 17, 22:04 UTC2h 45m
2026-07-17 DAL941 SEA → MSP Jul 17, 19:20 UTCJul 17, 22:05 UTC2h 45m
2026-07-17 DAL868 MSP → SEA Jul 17, 14:15 UTCJul 17, 17:30 UTC3h 15m
2026-07-17 DAL868 MSP → SEA Jul 17, 14:13 UTCJul 17, 17:29 UTC3h 16m
2026-07-17 DAL2872 - Jul 17, 10:30 UTCJul 17, 12:40 UTC2h 10m
2026-07-17 DAL2918 MSP → BWI Jul 17, 00:55 UTCJul 17, 02:50 UTC1h 55m
2026-07-17 DAL2918 MSP → BWI Jul 17, 00:52 UTCJul 17, 02:51 UTC1h 59m
2026-07-16 DAL2981 ATL → MSP Jul 16, 20:05 UTCJul 16, 22:10 UTC2h 5m
2026-07-16 DAL3104 - Jul 16, 17:10 UTCJul 16, 18:19 UTC1h 10m
2026-07-16 DAL3104 ATL → SRQ Jul 16, 14:20 UTCJul 16, 15:35 UTC1h 15m
2026-07-16 DAL1383 - Jul 16, 11:15 UTCJul 16, 12:25 UTC1h 10m
2026-07-16 DAL1351 - Jul 16, 03:25 UTCJul 16, 04:40 UTC1h 15m
2026-07-16 DAL1351 ATL → PIT Jul 16, 03:23 UTCJul 16, 04:38 UTC1h 15m
2026-07-15 DAL1660 - Jul 15, 22:55 UTCJul 16, 00:35 UTC1h 40m
2026-07-15 DAL1660 - Jul 15, 19:35 UTCJul 15, 21:10 UTC1h 35m
2026-07-15 DAL1688 ABQ → ATL Jul 15, 15:25 UTCJul 15, 18:15 UTC2h 50m
2026-07-15 DAL1531 ATL → ABQ Jul 15, 00:55 UTCJul 15, 03:40 UTC2h 45m
2026-07-14 DAL1214 - Jul 14, 21:40 UTCJul 14, 23:00 UTC1h 19m

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 N953DZ page for operator, model, and routing details .

Mode-S AD402F frequently asked

What is Mode-S code AD402F?
AD402F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N953DZ.
Where is Mode-S AD402F registered?
Mode-S code AD402F 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 AD402F broadcasting right now?
Yes. Mode-S AD402F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD402F, octal 53240057, decimal 11,354,159.
What flights does AD402F operate?
Mode-S AD402F has broadcast 20 distinct callsigns, including DAL566, DAL3112, DAL2152, DAL1363, DAL2999.