sensors Mode-S transponder

A7F2D2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N611DT · operated by DELTA AIR LINES INC

Hex
A7F2D2
Octal
51771322
Decimal
11,006,674
Country
US
Tail
N611DT
No current signal · last broadcast Jul 26, 22:05 UTC
Flights observed
219
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S A7F2D2.

Country allocation

The ICAO 24-bit address A7F2D2 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
DAL749 - 9 2026-07-20
DAL1675 Delta Air Lines 8 2026-07-26
DAL2605 Delta Air Lines 7 2026-07-25
DAL2775 - 6 2026-07-07
DAL895 Delta Air Lines 5 2026-07-25
DAL852 - 5 2026-07-08
DAL477 Delta Air Lines 5 2026-07-20
DAL2198 Delta Air Lines 5 2026-07-25
DAL2110 - 5 2026-07-18
DAL2049 Delta Air Lines 5 2026-07-22
DAL977 Delta Air Lines 4 2026-06-21
DAL820 - 4 2026-07-10
DAL683 Delta Air Lines 4 2026-06-12
DAL494 - 4 2026-07-08
DAL356 - 4 2026-07-20
DAL2070 - 4 2026-07-15
DAL9936 Delta Air Lines 3 2026-05-20
DAL872 Delta Air Lines 3 2026-07-24
DAL859 - 3 2026-06-23
DAL800 - 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2658 STL → DTW Jul 26, 19:35 UTCJul 26, 22:05 UTC2h 30m
2026-07-26 DAL1675 SLC → PHL Jul 26, 15:30 UTCJul 26, 17:00 UTC1h 30m
2026-07-26 DAL1675 SLC → PHL Jul 26, 12:15 UTCJul 26, 13:55 UTC1h 40m
2026-07-26 DAL1675 SLC → PHL Jul 26, 12:15 UTCJul 26, 13:44 UTC1h 29m
2026-07-25 DAL2198 ATL → EWR Jul 25, 22:40 UTCJul 26, 01:50 UTC3h 10m
2026-07-25 DAL2198 ATL → EWR Jul 25, 22:36 UTCJul 26, 01:40 UTC3h 4m
2026-07-25 DAL895 XNA → ATL Jul 25, 17:05 UTCJul 25, 20:55 UTC3h 50m
2026-07-25 DAL2605 BOS → ORD Jul 25, 14:15 UTCJul 25, 15:20 UTC1h 5m
2026-07-25 DAL2605 BOS → ORD Jul 25, 14:11 UTCJul 25, 15:17 UTC1h 6m
2026-07-25 DAL2605 BOS → ORD Jul 25, 11:50 UTCJul 25, 12:50 UTC1h 0m
2026-07-25 DAL899 LAX → ATL Jul 25, 06:00 UTCJul 25, 09:50 UTC3h 50m
2026-07-24 DAL872 SEA → MSP Jul 24, 23:40 UTCJul 25, 03:55 UTC4h 15m
2026-07-24 DAL2024 SLC → SFO Jul 24, 18:00 UTCJul 24, 21:55 UTC3h 55m
2026-07-24 DAL2025 MCO → MSP Jul 24, 12:25 UTCJul 24, 16:30 UTC4h 5m
2026-07-24 DAL2069 SLC → SFO Jul 24, 05:50 UTCJul 24, 09:35 UTC3h 45m
2026-07-23 DAL1691 HPN → ATL Jul 23, 23:35 UTCJul 24, 03:35 UTC4h 0m
2026-07-23 DAL1691 HPN → ATL Jul 23, 23:33 UTCJul 24, 03:31 UTC3h 58m
2026-07-23 DAL1685 ATL → LGA Jul 23, 19:33 UTCJul 23, 21:46 UTC2h 13m
2026-07-23 DAL1685 ATL → LGA Jul 23, 19:35 UTCJul 23, 21:45 UTC2h 10m
2026-07-23 DAL546 SFO → JFK Jul 23, 13:15 UTCJul 23, 17:30 UTC4h 15m
2026-07-23 DAL546 SFO → JFK Jul 23, 13:13 UTCJul 23, 17:27 UTC4h 14m
2026-07-22 DAL798 CVG → SLC Jul 22, 23:05 UTCJul 23, 03:40 UTC4h 35m
2026-07-22 DAL2049 JFK → ATL Jul 22, 18:15 UTCJul 22, 20:25 UTC2h 10m
2026-07-22 DAL2049 JFK → ATL Jul 22, 14:20 UTCJul 22, 16:35 UTC2h 15m
2026-07-22 DAL461 JFK → ATL Jul 22, 00:20 UTCJul 22, 04:45 UTC4h 25m
2026-07-21 DAL1045 - Jul 21, 19:25 UTCJul 21, 21:25 UTC2h 0m
2026-07-21 DAL800 - Jul 21, 12:05 UTCJul 21, 16:45 UTC4h 40m
2026-07-20 DAL338 JFK → SAN Jul 20, 20:25 UTCJul 21, 01:35 UTC5h 9m
2026-07-20 DAL356 - Jul 20, 13:15 UTCJul 20, 18:45 UTC5h 30m
2026-07-20 DAL477 LAX → ATL Jul 20, 06:35 UTCJul 20, 11:40 UTC5h 5m
2026-07-20 DAL477 LAX → ATL Jul 20, 06:34 UTCJul 20, 11:30 UTC4h 56m
2026-07-20 DAL749 TPA → LAX Jul 20, 00:35 UTCJul 20, 05:00 UTC4h 25m
2026-07-20 DAL749 TPA → LAX Jul 20, 00:32 UTCJul 20, 04:47 UTC4h 15m
2026-07-19 DAL749 LAX → TPA Jul 19, 18:30 UTCJul 19, 22:55 UTC4h 25m
2026-07-19 DAL538 LAX → JFK Jul 19, 11:35 UTCJul 19, 15:55 UTC4h 20m
2026-07-18 DAL749 LAX → TPA Jul 18, 17:50 UTCJul 18, 22:30 UTC4h 40m
2026-07-18 DAL749 LAX → TPA Jul 18, 17:49 UTCJul 18, 22:24 UTC4h 35m
2026-07-18 DAL2110 MSP → LAX Jul 18, 12:15 UTCJul 18, 15:20 UTC3h 5m
2026-07-18 DAL2110 MSP → LAX Jul 18, 12:13 UTCJul 18, 15:14 UTC3h 1m
2026-07-17 DAL1042 AUS → MSP Jul 17, 23:39 UTCJul 18, 01:50 UTC2h 10m
2026-07-17 DAL1042 - Jul 17, 19:35 UTCJul 17, 21:50 UTC2h 15m
2026-07-17 DAL1675 DEN → MSP Jul 17, 15:25 UTCJul 17, 17:05 UTC1h 40m
2026-07-17 DAL1675 MSP → DEN Jul 17, 12:19 UTCJul 17, 13:50 UTC1h 30m
2026-07-17 DAL756 SFO → MSP Jul 17, 01:55 UTCJul 17, 05:04 UTC3h 10m
2026-07-17 DAL756 SFO → MSP Jul 17, 01:54 UTCJul 17, 05:03 UTC3h 9m
2026-07-16 DAL756 MSP → SFO Jul 16, 20:45 UTCJul 17, 00:25 UTC3h 40m
2026-07-16 DAL1103 BOS → MSP Jul 16, 16:25 UTCJul 16, 19:10 UTC2h 45m
2026-07-16 DAL2649 MSP → BNH Jul 16, 12:34 UTCJul 16, 14:45 UTC2h 10m
2026-07-16 DAL2359 PDX → MSP Jul 16, 08:30 UTCJul 16, 11:20 UTC2h 50m
2026-07-16 DAL1373 SLC → PDX Jul 16, 05:00 UTCJul 16, 06:25 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 N611DT page for operator, model, and routing details .

Mode-S A7F2D2 frequently asked

What is Mode-S code A7F2D2?
A7F2D2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N611DT.
Where is Mode-S A7F2D2 registered?
Mode-S code A7F2D2 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 A7F2D2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7F2D2, octal 51771322, decimal 11,006,674.
What flights does A7F2D2 operate?
Mode-S A7F2D2 has broadcast 20 distinct callsigns, including DAL749, DAL1675, DAL2605, DAL2775, DAL895.