Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD7639

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N967AT · BOEING 717-200 · operated by DELTA AIR LINES INC

Hex
AD7639
Octal
53273071
Decimal
11,367,993
Country
US
Tail
N967AT
Type
B712
Broadcasting now · callsign DAL2220 · 29,000 ft
Flights observed
617
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AD7639 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD7639 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
DAL3027 - 11 2026-07-05
DAL1369 Delta Air Lines 8 2026-07-12
DAL2577 - 7 2026-06-26
DAL2480 - 7 2026-06-27
DAL3099 Delta Air Lines 6 2026-06-10
DAL3060 - 6 2026-04-17
DAL3012 - 6 2026-06-30
DAL2944 Delta Air Lines 6 2026-05-01
DAL2868 - 6 2026-06-28
DAL2599 Delta Air Lines 6 2026-06-04
DAL1374 Delta Air Lines 6 2026-06-06
DAL731 Delta Air Lines 5 2026-06-07
DAL3202 - 5 2026-07-06
DAL3182 Delta Air Lines 5 2026-05-28
DAL3163 Delta Air Lines 5 2026-05-19
DAL3141 Delta Air Lines 5 2026-07-04
DAL3118 Delta Air Lines 5 2026-05-15
DAL3103 Delta Air Lines 5 2026-05-13
DAL3094 Delta Air Lines 5 2026-06-13
DAL3026 Delta Air Lines 5 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL1640 - Jul 14, 19:00 UTCJul 14, 20:05 UTC1h 5m
2026-07-14 DAL1640 ATL → PNS Jul 14, 17:00 UTCJul 14, 17:45 UTC45m
2026-07-14 DAL376 - Jul 14, 14:35 UTCJul 14, 15:35 UTC1h 0m
2026-07-14 DAL0376 - Jul 14, 12:25 UTCJul 14, 13:15 UTC50m
2026-07-14 DAL2637 BNA → ATL Jul 14, 10:15 UTCJul 14, 10:55 UTC40m
2026-07-14 DAL3002 ATL → BNA Jul 14, 02:09 UTCJul 14, 02:51 UTC42m
2026-07-14 DAL3002 ATL → BNA Jul 14, 02:10 UTCJul 14, 02:55 UTC45m
2026-07-13 DAL1183 - Jul 13, 14:25 UTCJul 13, 15:30 UTC1h 5m
2026-07-13 DAL1183 BTR → ATL Jul 13, 14:23 UTCJul 13, 15:29 UTC1h 6m
2026-07-13 DAL3111 ATL → BTR Jul 13, 01:55 UTCJul 13, 03:10 UTC1h 15m
2026-07-12 DAL1110 - Jul 12, 22:20 UTCJul 12, 23:10 UTC50m
2026-07-12 DAL1110 - Jul 12, 20:30 UTCJul 12, 21:15 UTC45m
2026-07-12 DAL3096 - Jul 12, 17:35 UTCJul 12, 19:20 UTC1h 45m
2026-07-12 DAL3096 ATL → LEX Jul 12, 15:45 UTCJul 12, 16:35 UTC50m
2026-07-12 DAL1369 ATL → GRR Jul 12, 13:55 UTCJul 12, 14:25 UTC30m
2026-07-06 DAL3202 - Jul 6, 01:00 UTCJul 6, 01:25 UTC25m
2026-07-05 DAL3027 - Jul 5, 21:20 UTCJul 5, 22:45 UTC1h 25m
2026-07-05 DAL3027 - Jul 5, 18:55 UTCJul 5, 19:50 UTC55m
2026-07-05 DAL3045 - Jul 5, 16:55 UTCJul 5, 17:55 UTC1h 0m
2026-07-05 DAL3045 - Jul 5, 14:55 UTCJul 5, 15:25 UTC30m
2026-07-05 DAL2802 ATL → EWR Jul 5, 12:45 UTCJul 5, 13:25 UTC40m
2026-07-05 DAL3121 ATL → BNA Jul 5, 01:15 UTCJul 5, 01:55 UTC40m
2026-07-04 DAL3141 CHA → ATL Jul 4, 19:50 UTCJul 4, 20:20 UTC30m
2026-07-04 DAL3141 CHA → ATL Jul 4, 18:10 UTCJul 4, 18:35 UTC25m
2026-07-04 DAL1369 ATL → GRR Jul 4, 15:15 UTCJul 4, 15:55 UTC40m
2026-07-04 DAL1369 ATL → GRR Jul 4, 15:14 UTCJul 4, 15:51 UTC37m
2026-07-04 DAL3202 - Jul 4, 01:15 UTCJul 4, 01:45 UTC30m
2026-07-04 DAL3202 ATL → BHM Jul 4, 01:12 UTCJul 4, 01:40 UTC28m
2026-07-03 DAL512 - Jul 3, 22:20 UTCJul 4, 00:00 UTC1h 40m
2026-07-03 DAL512 ATL → DAL Jul 3, 17:20 UTCJul 3, 19:00 UTC1h 40m
2026-07-03 DAL1158 OKC → ATL Jul 3, 13:50 UTCJul 3, 15:30 UTC1h 40m
2026-07-02 DAL2784 ATL → OKC Jul 2, 22:30 UTCJul 3, 00:15 UTC1h 45m
2026-07-02 DAL2718 - Jul 2, 20:20 UTCJul 2, 21:10 UTC50m
2026-07-02 DAL2718 GPT → ATL Jul 2, 20:17 UTCJul 2, 21:10 UTC53m
2026-07-02 DAL2718 - Jul 2, 18:05 UTCJul 2, 18:50 UTC45m
2026-07-02 DAL932 - Jul 2, 16:00 UTCJul 2, 16:45 UTC45m
2026-07-02 DAL3054 - Jul 2, 13:30 UTCJul 2, 14:05 UTC35m
2026-07-01 DAL1125 - Jul 1, 18:45 UTCJul 1, 20:30 UTC1h 45m
2026-07-01 DAL1125 - Jul 1, 15:30 UTCJul 1, 17:20 UTC1h 50m
2026-07-01 DAL1369 ATL → GRR Jul 1, 12:30 UTCJul 1, 13:05 UTC35m
2026-06-30 DAL2371 ATL → BHM Jun 30, 23:27 UTCJun 30, 23:57 UTC30m
2026-06-30 DAL2371 - Jun 30, 23:30 UTCJul 1, 00:00 UTC30m
2026-06-30 DAL3012 - Jun 30, 19:15 UTCJun 30, 19:50 UTC35m
2026-06-30 DAL3012 BHM → ATL Jun 30, 19:11 UTCJun 30, 19:47 UTC36m
2026-06-30 DAL3012 - Jun 30, 17:35 UTCJun 30, 18:05 UTC30m
2026-06-30 DAL1708 EWR → MSP Jun 30, 14:55 UTCJun 30, 15:25 UTC30m
2026-06-30 DAL1708 EWR → MSP Jun 30, 14:53 UTCJun 30, 15:22 UTC29m
2026-06-30 DAL1708 EWR → MSP Jun 30, 13:10 UTCJun 30, 13:45 UTC35m
2026-06-30 DAL1255 - Jun 30, 10:05 UTCJun 30, 11:30 UTC1h 25m
2026-06-30 DAL1283 ATL → HAR Jun 30, 02:00 UTCJun 30, 03:25 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 N967AT page for operator, model, and routing details .

Mode-S AD7639 frequently asked

What is Mode-S code AD7639?
AD7639 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N967AT.
Where is Mode-S AD7639 registered?
Mode-S code AD7639 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 AD7639 broadcasting right now?
Yes. Mode-S AD7639 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD7639, octal 53273071, decimal 11,367,993.
What flights does AD7639 operate?
Mode-S AD7639 has broadcast 20 distinct callsigns, including DAL3027, DAL1369, DAL2577, DAL2480, DAL3099.