Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A9B06F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N723TW · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A9B06F
Octal
52330157
Decimal
11,120,751
Country
US
Tail
N723TW
Type
B752
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
367
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A9B06F.

Country allocation

The ICAO 24-bit address A9B06F 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
DAL987 Delta Air Lines 21 2026-07-26
DAL392 Delta Air Lines 21 2026-07-20
DAL437 Delta Air Lines 20 2026-07-23
DAL479 - 19 2026-07-23
DAL639 Delta Air Lines 18 2026-07-24
DAL329 Delta Air Lines 18 2026-07-25
DAL321 Delta Air Lines 17 2026-07-24
DAL2012 - 16 2026-06-19
DAL507 Delta Air Lines 15 2026-07-25
DAL695 Delta Air Lines 14 2026-07-25
DAL318 Delta Air Lines 13 2026-07-24
DAL2166 Delta Air Lines 13 2026-07-22
DAL2004 Delta Air Lines 13 2026-07-26
DAL667 - 10 2026-07-06
DAL383 - 9 2026-06-25
DAL750 - 8 2026-07-15
DAL724 - 7 2026-07-15
DAL551 Delta Air Lines 7 2026-04-27
DAL2328 Delta Air Lines 7 2026-07-05
DAL2326 - 7 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2004 TPA → BOS Jul 26, 15:55 UTCJul 26, 21:10 UTC5h 15m
2026-07-26 DAL987 PDX → JFK Jul 26, 12:15 UTCJul 26, 14:20 UTC2h 5m
2026-07-26 DAL987 PDX → JFK Jul 26, 12:15 UTCJul 26, 14:19 UTC2h 4m
2026-07-25 DAL329 SJU → MSP Jul 25, 23:10 UTCJul 26, 03:05 UTC3h 55m
2026-07-25 DAL329 SJU → MSP Jul 25, 23:08 UTCJul 26, 03:03 UTC3h 55m
2026-07-25 DAL329 SJU → MSP Jul 25, 15:10 UTCJul 25, 19:00 UTC3h 50m
2026-07-25 DAL695 BOS → LAS Jul 25, 10:55 UTCJul 25, 13:05 UTC2h 10m
2026-07-25 DAL507 LGA → ATL Jul 25, 04:15 UTCJul 25, 09:10 UTC4h 55m
2026-07-25 DAL507 LGA → ATL Jul 25, 04:13 UTCJul 25, 09:12 UTC4h 59m
2026-07-24 DAL318 BOS → SEA Jul 24, 20:45 UTCJul 25, 02:30 UTC5h 45m
2026-07-24 DAL639 CVG → DEN Jul 24, 13:55 UTCJul 24, 18:55 UTC5h 0m
2026-07-24 DAL321 JFK → LAS Jul 24, 00:55 UTCJul 24, 06:35 UTC5h 40m
2026-07-23 DAL437 SFO → ATL Jul 23, 17:55 UTCJul 23, 22:55 UTC5h 0m
2026-07-23 DAL437 SFO → ATL Jul 23, 17:54 UTCJul 23, 22:54 UTC5h 0m
2026-07-23 DAL479 BOS → LAX Jul 23, 10:45 UTCJul 23, 16:25 UTC5h 40m
2026-07-22 DAL2166 MSP → CLE Jul 22, 22:55 UTCJul 23, 03:45 UTC4h 50m
2026-07-22 DAL2166 MSP → CLE Jul 22, 22:50 UTCJul 23, 03:44 UTC4h 54m
2026-07-22 DAL2004 TPA → BOS Jul 22, 15:20 UTCJul 22, 20:55 UTC5h 35m
2026-07-22 DAL987 PDX → JFK Jul 22, 11:20 UTCJul 22, 13:25 UTC2h 5m
2026-07-21 DAL329 SJU → MSP Jul 21, 21:15 UTCJul 22, 01:20 UTC4h 5m
2026-07-21 DAL329 SJU → MSP Jul 21, 21:12 UTCJul 22, 01:15 UTC4h 3m
2026-07-21 DAL329 SJU → MSP Jul 21, 15:10 UTCJul 21, 19:00 UTC3h 50m
2026-07-21 DAL695 BOS → LAS Jul 21, 11:00 UTCJul 21, 13:15 UTC2h 15m
2026-07-21 DAL507 LGA → ATL Jul 21, 04:20 UTCJul 21, 09:25 UTC5h 5m
2026-07-20 DAL392 DCA → LAX Jul 20, 21:20 UTCJul 21, 02:05 UTC4h 44m
2026-07-20 DAL392 DCA → LAX Jul 20, 14:45 UTCJul 20, 19:20 UTC4h 35m
2026-07-19 DAL318 BOS → SEA Jul 19, 20:50 UTCJul 20, 02:05 UTC5h 15m
2026-07-19 DAL639 CVG → DEN Jul 19, 13:55 UTCJul 19, 19:10 UTC5h 15m
2026-07-19 DAL392 DCA → LAX Jul 19, 02:25 UTCJul 19, 06:55 UTC4h 30m
2026-07-18 DAL392 DCA → LAX Jul 18, 23:35 UTCJul 19, 01:00 UTC1h 25m
2026-07-18 DAL392 DCA → LAX Jul 18, 14:55 UTCJul 18, 19:15 UTC4h 20m
2026-07-18 DAL321 BOS → LAX Jul 18, 01:07 UTCJul 18, 06:32 UTC5h 25m
2026-07-18 DAL321 - Jul 18, 01:10 UTCJul 18, 06:35 UTC5h 26m
2026-07-17 DAL437 SFO → ATL Jul 17, 17:55 UTCJul 17, 23:10 UTC5h 15m
2026-07-17 DAL479 - Jul 17, 10:40 UTCJul 17, 16:00 UTC5h 20m
2026-07-16 DAL2166 LAX → BNH Jul 16, 22:40 UTCJul 17, 03:50 UTC5h 10m
2026-07-16 DAL2004 - Jul 16, 15:14 UTCJul 16, 20:49 UTC5h 35m
2026-07-16 DAL987 ATL → BOS Jul 16, 11:15 UTCJul 16, 13:25 UTC2h 10m
2026-07-16 DAL987 ATL → BOS Jul 16, 11:13 UTCJul 16, 13:23 UTC2h 10m
2026-07-15 DAL724 - Jul 15, 23:15 UTCJul 16, 03:35 UTC4h 20m
2026-07-15 DAL750 ATL → SFO Jul 15, 17:23 UTCJul 15, 21:36 UTC4h 13m
2026-07-15 DAL750 ATL → SFO Jul 15, 17:25 UTCJul 15, 21:35 UTC4h 10m
2026-07-15 DAL2326 JAX → ATL Jul 15, 14:50 UTCJul 15, 15:40 UTC50m
2026-07-15 DAL2326 - Jul 15, 12:35 UTCJul 15, 13:20 UTC45m
2026-07-14 DAL329 - Jul 14, 21:25 UTCJul 15, 01:35 UTC4h 9m
2026-07-14 DAL329 - Jul 14, 16:20 UTCJul 14, 20:15 UTC3h 55m
2026-07-14 DAL695 BOS → ATL Jul 14, 12:49 UTCJul 14, 14:51 UTC2h 2m
2026-07-14 DAL695 BOS → ATL Jul 14, 12:50 UTCJul 14, 14:55 UTC2h 5m
2026-07-14 DAL437 LAX → BOS Jul 14, 06:00 UTCJul 14, 11:09 UTC5h 9m
2026-07-14 DAL437 - Jul 14, 06:05 UTCJul 14, 11:20 UTC5h 15m

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 N723TW page for operator, model, and routing details .

Mode-S A9B06F frequently asked

What is Mode-S code A9B06F?
A9B06F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N723TW.
Where is Mode-S A9B06F registered?
Mode-S code A9B06F 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 A9B06F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9B06F, octal 52330157, decimal 11,120,751.
What flights does A9B06F operate?
Mode-S A9B06F has broadcast 20 distinct callsigns, including DAL987, DAL392, DAL437, DAL479, DAL639.