Apparatus

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sensors Mode-S transponder

A7B4F2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N596NW · BOEING 757-300 · operated by DELTA AIR LINES INC

Hex
A7B4F2
Octal
51732362
Decimal
10,990,834
Country
US
Tail
N596NW
Type
B753
Broadcasting now · callsign DAL407 · 37,000 ft
Flights observed
421
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Current position

A7B4F2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A7B4F2 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
DAL655 Delta Air Lines 17 2026-05-16
DAL2225 Delta Air Lines 16 2026-07-26
DAL673 Delta Air Lines 15 2026-07-25
DAL712 - 13 2026-07-18
DAL1208 - 13 2026-07-07
DAL734 - 12 2026-07-12
DAL2060 Delta Air Lines 12 2026-04-29
DAL2209 Delta Air Lines 11 2026-05-31
DAL1205 Delta Air Lines 11 2026-05-17
DAL2246 Delta Air Lines 10 2026-07-26
DAL2745 Delta Air Lines 9 2026-06-06
DAL1282 Delta Air Lines 9 2026-07-26
DAL1250 - 9 2026-07-01
DAL1133 Delta Air Lines 9 2026-05-25
DAL881 Delta Air Lines 8 2026-06-07
DAL1706 Delta Air Lines 7 2026-07-20
DAL1310 - 7 2026-07-10
DAL1243 - 7 2026-07-02
DAL1037 Delta Air Lines 7 2026-05-07
DAL942 - 6 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2225 ATL → ALB Jul 26, 18:10 UTCJul 26, 21:05 UTC2h 55m
2026-07-26 DAL1282 MCO → LGA Jul 26, 13:35 UTCJul 26, 16:25 UTC2h 50m
2026-07-26 DAL2246 SEA → SAN Jul 26, 01:16 UTCJul 26, 04:05 UTC2h 49m
2026-07-26 DAL2246 SEA → SAN Jul 26, 01:20 UTCJul 26, 04:10 UTC2h 50m
2026-07-25 DAL673 DFW → LGA Jul 25, 19:55 UTCJul 25, 23:40 UTC3h 45m
2026-07-25 DAL673 DFW → LGA Jul 25, 14:05 UTCJul 25, 17:00 UTC2h 55m
2026-07-24 DAL2225 ATL → ALB Jul 24, 22:40 UTCJul 25, 01:45 UTC3h 5m
2026-07-24 DAL2225 ATL → ALB Jul 24, 18:00 UTCJul 24, 20:45 UTC2h 45m
2026-07-24 DAL1282 MCO → LGA Jul 24, 13:45 UTCJul 24, 16:20 UTC2h 35m
2026-07-24 DAL2246 SEA → SAN Jul 24, 01:05 UTCJul 24, 03:55 UTC2h 50m
2026-07-23 DAL673 DFW → LGA Jul 23, 19:15 UTCJul 23, 22:40 UTC3h 25m
2026-07-23 DAL673 DFW → LGA Jul 23, 14:05 UTCJul 23, 17:05 UTC3h 0m
2026-07-23 DAL555 LAS → ATL Jul 23, 04:55 UTCJul 23, 09:25 UTC4h 30m
2026-07-23 DAL555 LAS → ATL Jul 23, 00:15 UTCJul 23, 03:35 UTC3h 20m
2026-07-22 DAL555 LAS → ATL Jul 22, 18:20 UTCJul 22, 21:30 UTC3h 10m
2026-07-22 DAL1282 MCO → LGA Jul 22, 13:30 UTCJul 22, 16:15 UTC2h 45m
2026-07-22 DAL2246 SEA → SAN Jul 22, 00:20 UTCJul 22, 03:10 UTC2h 50m
2026-07-21 DAL673 - Jul 21, 19:05 UTCJul 21, 22:25 UTC3h 20m
2026-07-21 DAL673 MSP → FLL Jul 21, 14:05 UTCJul 21, 17:00 UTC2h 55m
2026-07-21 DAL953 SEA → MSP Jul 21, 07:15 UTCJul 21, 09:50 UTC2h 35m
2026-07-21 DAL953 SEA → MSP Jul 21, 07:14 UTCJul 21, 09:54 UTC2h 40m
2026-07-21 DAL565 SEA → KOA Jul 21, 00:50 UTCJul 21, 05:20 UTC4h 30m
2026-07-20 DAL1706 LAX → MSY Jul 20, 18:50 UTCJul 20, 22:10 UTC3h 20m
2026-07-20 DAL444 ATL → SEA Jul 20, 12:05 UTCJul 20, 16:40 UTC4h 35m
2026-07-19 DAL782 SLC → BOS Jul 19, 15:50 UTCJul 19, 20:45 UTC4h 55m
2026-07-19 DAL575 ATL → LAX Jul 19, 03:35 UTCJul 19, 07:40 UTC4h 5m
2026-07-18 DAL712 DTW → TPA Jul 18, 20:10 UTCJul 19, 00:25 UTC4h 15m
2026-07-18 DAL712 DTW → TPA Jul 18, 20:07 UTCJul 19, 00:29 UTC4h 22m
2026-07-18 DAL712 ATL → SAN Jul 18, 14:45 UTCJul 18, 18:25 UTC3h 40m
2026-07-17 DAL783 SLC → RDU Jul 17, 04:59 UTCJul 17, 08:59 UTC4h 0m
2026-07-16 DAL500 ATL → LAX Jul 16, 23:25 UTCJul 17, 03:25 UTC4h 0m
2026-07-16 DAL797 SEA → ATL Jul 16, 16:09 UTCJul 16, 20:35 UTC4h 25m
2026-07-15 DAL472 ATL → SEA Jul 15, 20:55 UTCJul 16, 01:35 UTC4h 40m
2026-07-15 DAL562 SEA → ATL Jul 15, 14:55 UTCJul 15, 19:20 UTC4h 25m
2026-07-14 DAL472 ATL → SEA Jul 14, 21:10 UTCJul 15, 01:40 UTC4h 29m
2026-07-14 DAL562 SEA → ATL Jul 14, 15:00 UTCJul 14, 19:25 UTC4h 25m
2026-07-14 DAL505 MSP → SEA Jul 14, 03:45 UTCJul 14, 06:50 UTC3h 5m
2026-07-14 DAL942 - Jul 14, 00:00 UTCJul 14, 00:55 UTC55m
2026-07-13 DAL942 SEA → MSP Jul 13, 22:04 UTCJul 14, 00:51 UTC2h 47m
2026-07-13 DAL942 - Jul 13, 22:05 UTCJul 13, 22:50 UTC45m
2026-07-12 DAL734 - Jul 12, 13:05 UTCJul 12, 17:20 UTC4h 15m
2026-07-11 DAL1706 - Jul 11, 18:50 UTCJul 11, 22:25 UTC3h 35m
2026-07-11 DAL444 ATL → SEA Jul 11, 11:50 UTCJul 11, 16:40 UTC4h 50m
2026-07-11 DAL783 - Jul 11, 04:45 UTCJul 11, 08:50 UTC4h 5m
2026-07-10 DAL500 ATL → LAX Jul 10, 23:00 UTCJul 11, 02:55 UTC3h 55m
2026-07-10 DAL1062 MSP → ATL Jul 10, 13:15 UTCJul 10, 15:25 UTC2h 10m
2026-07-10 DAL1310 ATL → MSP Jul 10, 03:15 UTCJul 10, 05:30 UTC2h 15m
2026-07-09 DAL712 - Jul 9, 20:40 UTCJul 10, 00:35 UTC3h 55m
2026-07-09 DAL712 - Jul 9, 14:40 UTCJul 9, 18:30 UTC3h 50m
2026-07-09 DAL1062 MSP → ATL Jul 9, 10:35 UTCJul 9, 12:30 UTC1h 55m

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 N596NW page for operator, model, and routing details .

Mode-S A7B4F2 frequently asked

What is Mode-S code A7B4F2?
A7B4F2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N596NW.
Where is Mode-S A7B4F2 registered?
Mode-S code A7B4F2 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 A7B4F2 broadcasting right now?
Yes. Mode-S A7B4F2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7B4F2, octal 51732362, decimal 10,990,834.
What flights does A7B4F2 operate?
Mode-S A7B4F2 has broadcast 20 distinct callsigns, including DAL655, DAL2225, DAL673, DAL712, DAL1208.