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 1h ago
Flights observed
162
Distinct callsigns
20
Country
US
Last broadcast
1h ago

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
DAL2775 - 6 2026-07-07
DAL852 - 5 2026-07-08
DAL977 Delta Air Lines 4 2026-06-21
DAL895 - 4 2026-07-05
DAL820 - 4 2026-07-10
DAL749 - 4 2026-07-07
DAL683 Delta Air Lines 4 2026-06-12
DAL494 - 4 2026-07-08
DAL2605 - 4 2026-07-05
DAL9936 Delta Air Lines 3 2026-05-20
DAL859 - 3 2026-06-23
DAL499 Delta Air Lines 3 2026-06-06
DAL484 - 3 2026-07-08
DAL477 - 3 2026-07-12
DAL413 - 3 2026-06-30
DAL377 Delta Air Lines 3 2026-06-03
DAL356 - 3 2026-07-12
DAL2693 - 3 2026-07-07
DAL2198 - 3 2026-07-05
DAL2151 - 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL2040 - Jul 14, 05:10 UTCJul 14, 08:30 UTC3h 20m
2026-07-13 DAL2070 - Jul 13, 22:50 UTCJul 14, 02:25 UTC3h 35m
2026-07-13 DAL2070 - Jul 13, 17:15 UTCJul 13, 21:00 UTC3h 45m
2026-07-13 DAL1977 - Jul 13, 11:00 UTCJul 13, 15:00 UTC4h 0m
2026-07-12 DAL358 SEA → TPA Jul 12, 19:55 UTCJul 13, 00:50 UTC4h 55m
2026-07-12 DAL356 - Jul 12, 12:35 UTCJul 12, 18:01 UTC5h 25m
2026-07-12 DAL477 LAX → FLL Jul 12, 06:10 UTCJul 12, 10:50 UTC4h 40m
2026-07-12 DAL872 MCO → LAX Jul 12, 00:05 UTCJul 12, 04:35 UTC4h 30m
2026-07-11 DAL2024 SLC → MCO Jul 11, 18:05 UTCJul 11, 22:10 UTC4h 5m
2026-07-11 DAL2021 - Jul 11, 11:15 UTCJul 11, 15:35 UTC4h 20m
2026-07-11 DAL2040 - Jul 11, 05:10 UTCJul 11, 09:25 UTC4h 15m
2026-07-10 DAL820 DCA → SLC Jul 10, 22:00 UTCJul 11, 02:20 UTC4h 20m
2026-07-10 DAL820 SLC → DCA Jul 10, 16:40 UTCJul 10, 20:10 UTC3h 30m
2026-07-10 DAL892 JFK → SLC Jul 10, 10:10 UTCJul 10, 14:35 UTC4h 25m
2026-07-10 DAL1668 MCO → JFK Jul 10, 01:53 UTCJul 10, 04:07 UTC2h 14m
2026-07-10 DAL1668 MCO → JFK Jul 10, 01:55 UTCJul 10, 04:15 UTC2h 20m
2026-07-09 DAL867 - Jul 9, 18:00 UTCJul 9, 22:35 UTC4h 35m
2026-07-09 DAL538 - Jul 9, 11:50 UTCJul 9, 16:15 UTC4h 25m
2026-07-09 DAL910 LAX → TPA Jul 9, 05:50 UTCJul 9, 10:05 UTC4h 15m
2026-07-08 DAL852 - Jul 8, 23:10 UTCJul 9, 03:30 UTC4h 20m
2026-07-08 DAL494 LAX → DTW Jul 8, 17:00 UTCJul 8, 20:55 UTC3h 55m
2026-07-08 DAL494 LAX → DTW Jul 8, 16:57 UTCJul 8, 20:50 UTC3h 53m
2026-07-08 DAL484 MCO → LAX Jul 8, 10:40 UTCJul 8, 15:10 UTC4h 30m
2026-07-08 DAL1740 JFK → MCO Jul 8, 00:50 UTCJul 8, 02:55 UTC2h 5m
2026-07-07 DAL2775 MCO → JFK Jul 7, 20:05 UTCJul 7, 22:10 UTC2h 5m
2026-07-07 DAL2775 JFK → MCO Jul 7, 16:15 UTCJul 7, 18:20 UTC2h 5m
2026-07-07 DAL2693 MCO → JFK Jul 7, 12:30 UTCJul 7, 14:30 UTC2h 0m
2026-07-07 DAL2693 MCO → JFK Jul 7, 12:26 UTCJul 7, 14:34 UTC2h 8m
2026-07-07 DAL547 - Jul 7, 06:15 UTCJul 7, 10:45 UTC4h 30m
2026-07-07 DAL749 - Jul 7, 00:10 UTCJul 7, 04:45 UTC4h 35m
2026-07-06 DAL749 LAX → TPA Jul 6, 17:35 UTCJul 6, 21:55 UTC4h 20m
2026-07-06 DAL2110 MSP → LAX Jul 6, 12:30 UTCJul 6, 15:45 UTC3h 15m
2026-07-05 DAL2198 - Jul 5, 22:45 UTCJul 6, 01:50 UTC3h 5m
2026-07-05 DAL895 - Jul 5, 16:45 UTCJul 5, 20:55 UTC4h 10m
2026-07-05 DAL895 ATL → LAX Jul 5, 16:45 UTCJul 5, 20:47 UTC4h 2m
2026-07-05 DAL2605 - Jul 5, 14:10 UTCJul 5, 15:10 UTC1h 0m
2026-07-05 DAL2605 ATL → TPA Jul 5, 11:35 UTCJul 5, 12:40 UTC1h 5m
2026-07-05 DAL783 - Jul 5, 05:10 UTCJul 5, 09:00 UTC3h 50m
2026-07-04 DAL852 - Jul 4, 22:40 UTCJul 5, 03:05 UTC4h 25m
2026-07-04 DAL494 - Jul 4, 16:55 UTCJul 4, 20:40 UTC3h 45m
2026-07-04 DAL484 MCO → LAX Jul 4, 10:40 UTCJul 4, 15:25 UTC4h 45m
2026-07-04 DAL1740 JFK → MCO Jul 4, 01:55 UTCJul 4, 04:05 UTC2h 10m
2026-07-03 DAL2775 - Jul 3, 20:00 UTCJul 3, 22:05 UTC2h 5m
2026-07-03 DAL2775 JFK → MCO Jul 3, 15:55 UTCJul 3, 18:05 UTC2h 10m
2026-07-03 DAL2693 MCO → JFK Jul 3, 11:50 UTCJul 3, 13:50 UTC2h 0m
2026-07-03 DAL547 - Jul 3, 05:30 UTCJul 3, 09:50 UTC4h 20m
2026-07-02 DAL852 - Jul 2, 22:30 UTCJul 3, 02:55 UTC4h 25m
2026-07-02 DAL494 - Jul 2, 17:00 UTCJul 2, 21:05 UTC4h 5m
2026-07-02 DAL484 - Jul 2, 10:30 UTCJul 2, 15:05 UTC4h 35m
2026-07-02 DAL1740 JFK → MCO Jul 2, 00:25 UTCJul 2, 02:35 UTC2h 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 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 1h ago.
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 DAL2775, DAL852, DAL977, DAL895, DAL820.