Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACDFAB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N929AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
ACDFAB
Octal
53157653
Decimal
11,329,451
Country
US
Tail
N929AT
Type
B712
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
691
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S ACDFAB.

Country allocation

The ICAO 24-bit address ACDFAB 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
DAL2763 - 9 2026-07-11
DAL1248 - 9 2026-07-19
DAL1126 - 9 2026-07-01
DAL3089 Delta Air Lines 8 2026-06-11
DAL2780 - 8 2026-07-15
DAL2182 - 8 2026-07-08
DAL1290 Delta Air Lines 8 2026-07-23
DAL3053 Delta Air Lines 7 2026-07-24
DAL2158 - 7 2026-07-08
DAL1637 Delta Air Lines 7 2026-06-03
DAL3108 - 6 2026-06-25
DAL2758 Delta Air Lines 6 2026-05-20
DAL2086 - 6 2026-06-17
DAL1549 - 6 2026-07-10
DAL976 Delta Air Lines 5 2026-05-28
DAL3164 - 5 2026-07-18
DAL3142 Delta Air Lines 5 2026-06-06
DAL3033 - 5 2026-06-18
DAL3032 Delta Air Lines 5 2026-07-21
DAL2968 Delta Air Lines 5 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1186 MSP → BOS Jul 26, 22:00 UTCJul 26, 22:45 UTC45m
2026-07-26 DAL1186 MSP → BOS Jul 26, 19:05 UTCJul 26, 20:40 UTC1h 35m
2026-07-26 DAL1017 ATL → JFK Jul 26, 17:20 UTCJul 26, 17:50 UTC30m
2026-07-26 DAL1017 ATL → JFK Jul 26, 15:30 UTCJul 26, 15:50 UTC20m
2026-07-26 DAL1625 JFK → MCO Jul 26, 13:10 UTCJul 26, 14:05 UTC55m
2026-07-26 DAL2001 ATL → CMH Jul 26, 00:45 UTCJul 26, 01:40 UTC55m
2026-07-25 DAL2700 BDL → ATL Jul 25, 21:00 UTCJul 25, 22:15 UTC1h 15m
2026-07-25 DAL2700 BDL → ATL Jul 25, 18:40 UTCJul 25, 19:50 UTC1h 10m
2026-07-25 DAL1155 ATL → BNA Jul 25, 16:30 UTCJul 25, 17:10 UTC40m
2026-07-25 DAL1155 ATL → BNA Jul 25, 14:05 UTCJul 25, 14:45 UTC40m
2026-07-25 DAL2379 ATL → HPN Jul 25, 10:40 UTCJul 25, 12:25 UTC1h 45m
2026-07-25 DAL1616 ORD → MSP Jul 25, 01:45 UTCJul 25, 03:40 UTC1h 55m
2026-07-24 DAL2571 LGA → ORD Jul 24, 23:55 UTCJul 25, 00:25 UTC30m
2026-07-24 DAL2571 LGA → ORD Jul 24, 23:51 UTCJul 25, 00:21 UTC30m
2026-07-24 DAL2571 LGA → ORD Jul 24, 21:05 UTCJul 24, 21:40 UTC35m
2026-07-24 DAL2044 ATL → BDL Jul 24, 17:10 UTCJul 24, 19:20 UTC2h 10m
2026-07-24 DAL2044 ATL → BDL Jul 24, 17:08 UTCJul 24, 19:18 UTC2h 10m
2026-07-24 DAL2044 ATL → BDL Jul 24, 14:05 UTCJul 24, 16:05 UTC2h 0m
2026-07-24 DAL3155 AUS → DTW Jul 24, 11:50 UTCJul 24, 12:45 UTC55m
2026-07-24 DAL3178 ATL → GPT Jul 24, 02:05 UTCJul 24, 02:50 UTC45m
2026-07-24 DAL3053 - Jul 24, 00:00 UTCJul 24, 00:50 UTC50m
2026-07-23 DAL3053 - Jul 23, 22:00 UTCJul 23, 22:45 UTC45m
2026-07-23 DAL2517 LGA → SRQ Jul 23, 19:05 UTCJul 23, 20:35 UTC1h 30m
2026-07-23 DAL2517 LGA → SRQ Jul 23, 16:30 UTCJul 23, 17:50 UTC1h 20m
2026-07-23 DAL1290 ATL → MSN Jul 23, 14:35 UTCJul 23, 15:05 UTC30m
2026-07-23 DAL1290 ATL → MSN Jul 23, 12:55 UTCJul 23, 13:30 UTC35m
2026-07-23 DAL2556 MSP → SFO Jul 23, 10:40 UTCJul 23, 11:15 UTC35m
2026-07-23 DAL2556 MSP → SFO Jul 23, 10:38 UTCJul 23, 11:09 UTC31m
2026-07-22 DAL3171 ATL → HSV Jul 22, 23:10 UTCJul 22, 23:40 UTC30m
2026-07-22 DAL1060 ATL → COS Jul 22, 18:50 UTCJul 22, 20:35 UTC1h 45m
2026-07-22 DAL1060 ATL → COS Jul 22, 16:00 UTCJul 22, 17:40 UTC1h 40m
2026-07-22 DAL3036 HSV → ATL Jul 22, 13:55 UTCJul 22, 14:30 UTC35m
2026-07-22 DAL3036 HSV → ATL Jul 22, 12:10 UTCJul 22, 12:40 UTC30m
2026-07-22 DAL1979 MSP → PUJ Jul 22, 10:25 UTCJul 22, 11:07 UTC42m
2026-07-22 DAL3202 ATL → BNA Jul 22, 00:15 UTCJul 22, 00:40 UTC25m
2026-07-21 DAL3032 ATL → CAE Jul 21, 22:00 UTCJul 21, 22:40 UTC40m
2026-07-21 DAL1429 BOS → RSW Jul 21, 18:40 UTCJul 21, 19:50 UTC1h 10m
2026-07-21 DAL3137 ATL → CLT Jul 21, 15:40 UTCJul 21, 17:05 UTC1h 25m
2026-07-21 DAL3137 ATL → CLT Jul 21, 13:00 UTCJul 21, 14:35 UTC1h 35m
2026-07-21 DAL1405 - Jul 21, 10:05 UTCJul 21, 11:30 UTC1h 25m
2026-07-21 DAL3177 GPT → ATL Jul 21, 03:00 UTCJul 21, 03:50 UTC50m
2026-07-21 DAL1959 PLS → ATL Jul 21, 00:00 UTCJul 21, 00:55 UTC55m
2026-07-20 DAL1959 PLS → ATL Jul 20, 22:20 UTCJul 20, 23:05 UTC45m
2026-07-20 DAL3078 ATL → LEX Jul 20, 19:40 UTCJul 20, 20:45 UTC1h 5m
2026-07-20 DAL3078 ATL → LEX Jul 20, 17:40 UTCJul 20, 18:30 UTC50m
2026-07-20 DAL3118 MLB → ATL Jul 20, 15:25 UTCJul 20, 16:30 UTC1h 5m
2026-07-20 DAL3118 MLB → ATL Jul 20, 13:05 UTCJul 20, 14:10 UTC1h 5m
2026-07-20 DAL2953 DCA → MCO Jul 20, 10:05 UTCJul 20, 11:10 UTC1h 5m
2026-07-20 DAL2435 ATL → MLB Jul 20, 03:00 UTCJul 20, 04:05 UTC1h 5m
2026-07-20 DAL2435 ATL → MLB Jul 20, 02:59 UTCJul 20, 04:05 UTC1h 6m

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 N929AT page for operator, model, and routing details .

Mode-S ACDFAB frequently asked

What is Mode-S code ACDFAB?
ACDFAB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N929AT.
Where is Mode-S ACDFAB registered?
Mode-S code ACDFAB 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 ACDFAB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACDFAB, octal 53157653, decimal 11,329,451.
What flights does ACDFAB operate?
Mode-S ACDFAB has broadcast 20 distinct callsigns, including DAL2763, DAL1248, DAL1126, DAL3089, DAL2780.