Apparatus

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sensors Mode-S transponder

A388A9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N327DN · AIRBUS A-321 · operated by BANK OF UTAH TRUSTEE

Hex
A388A9
Octal
50704251
Decimal
10,717,353
Country
US
Tail
N327DN
Type
A321
Broadcasting now · callsign DAL655 · 5,475 ft
Flights observed
486
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:50 UTC

Current position

A388A9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A388A9 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
DAL1311 Delta Air Lines 12 2026-07-23
DAL838 Delta Air Lines 11 2026-07-23
DAL2401 Delta Air Lines 10 2026-06-07
DAL893 - 8 2026-07-11
DAL1190 Delta Air Lines 8 2026-05-15
DAL959 Delta Air Lines 6 2026-07-18
DAL862 Delta Air Lines 6 2026-06-18
DAL665 Delta Air Lines 6 2026-04-15
DAL1295 Delta Air Lines 6 2026-07-25
DAL638 Delta Air Lines 5 2026-06-18
DAL598 Delta Air Lines 5 2026-04-22
DAL2982 Delta Air Lines 5 2026-05-30
DAL2891 Delta Air Lines 5 2026-06-07
DAL2642 - 5 2026-07-18
DAL2212 Delta Air Lines 5 2026-05-30
DAL2209 Delta Air Lines 5 2026-05-03
DAL1836 Delta Air Lines 5 2026-07-19
DAL1515 Delta Air Lines 5 2026-06-10
DAL1512 Delta Air Lines 5 2026-07-24
DAL1266 Delta Air Lines 5 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1576 ATL → MCO Jul 26, 19:20 UTCJul 26, 21:45 UTC2h 25m
2026-07-26 DAL1576 ATL → MCO Jul 26, 15:15 UTCJul 26, 17:40 UTC2h 25m
2026-07-26 DAL1301 DTW → PHL Jul 26, 12:10 UTCJul 26, 13:30 UTC1h 20m
2026-07-26 DAL1301 DTW → PHL Jul 26, 12:09 UTCJul 26, 13:30 UTC1h 21m
2026-07-26 DAL1606 ATL → PBI Jul 26, 01:41 UTCJul 26, 03:02 UTC1h 21m
2026-07-26 DAL1606 ATL → PBI Jul 26, 01:45 UTCJul 26, 03:05 UTC1h 20m
2026-07-25 DAL1413 SAN → SEA Jul 25, 21:10 UTCJul 25, 22:55 UTC1h 45m
2026-07-25 DAL1413 SAN → SEA Jul 25, 21:08 UTCJul 25, 22:48 UTC1h 40m
2026-07-25 DAL1413 SAN → SEA Jul 25, 18:20 UTCJul 25, 19:50 UTC1h 30m
2026-07-25 DAL1094 BOS → BNA Jul 25, 15:40 UTCJul 25, 17:00 UTC1h 20m
2026-07-25 DAL1094 BOS → BNA Jul 25, 12:40 UTCJul 25, 14:05 UTC1h 25m
2026-07-25 DAL1295 PHL → MSP Jul 25, 01:25 UTCJul 25, 02:45 UTC1h 20m
2026-07-24 DAL1295 PHL → MSP Jul 24, 22:35 UTCJul 25, 00:05 UTC1h 30m
2026-07-24 DAL1512 ATL → FLL Jul 24, 19:20 UTCJul 24, 20:15 UTC55m
2026-07-24 DAL1512 ATL → FLL Jul 24, 19:17 UTCJul 24, 20:49 UTC1h 32m
2026-07-24 DAL1512 ATL → FLL Jul 24, 15:10 UTCJul 24, 16:35 UTC1h 25m
2026-07-24 DAL1326 FLL → LGA Jul 24, 12:00 UTCJul 24, 13:20 UTC1h 20m
2026-07-24 DAL1489 ATL → FLL Jul 24, 00:45 UTCJul 24, 02:15 UTC1h 30m
2026-07-23 DAL838 PVD → ATL Jul 23, 21:35 UTCJul 23, 22:55 UTC1h 20m
2026-07-23 DAL838 PVD → ATL Jul 23, 18:50 UTCJul 23, 20:15 UTC1h 25m
2026-07-23 DAL1311 SLC → SFO Jul 23, 15:25 UTCJul 23, 16:40 UTC1h 15m
2026-07-23 DAL1311 SLC → SFO Jul 23, 15:19 UTCJul 23, 16:36 UTC1h 17m
2026-07-23 DAL1311 SLC → SFO Jul 23, 12:50 UTCJul 23, 14:10 UTC1h 20m
2026-07-23 DAL1632 - Jul 23, 01:05 UTCJul 23, 02:25 UTC1h 20m
2026-07-23 DAL1632 MIA → ATL Jul 23, 01:00 UTCJul 23, 02:22 UTC1h 22m
2026-07-22 DAL1631 BOS → ATL Jul 22, 21:45 UTCJul 22, 23:15 UTC1h 30m
2026-07-22 DAL1631 BOS → ATL Jul 22, 21:42 UTCJul 22, 23:06 UTC1h 24m
2026-07-22 DAL1332 - Jul 22, 18:50 UTCJul 22, 20:10 UTC1h 20m
2026-07-22 DAL1332 - Jul 22, 15:45 UTCJul 22, 17:10 UTC1h 25m
2026-07-22 DAL1258 AUS → ATL Jul 22, 12:05 UTCJul 22, 14:00 UTC1h 55m
2026-07-22 DAL1081 SFO → MSP Jul 22, 01:10 UTCJul 22, 02:55 UTC1h 45m
2026-07-21 DAL1100 SFO → SLC Jul 21, 15:03 UTCJul 21, 16:38 UTC1h 35m
2026-07-21 DAL1100 SFO → SLC Jul 21, 15:05 UTCJul 21, 16:40 UTC1h 35m
2026-07-21 DAL1100 SFO → SLC Jul 21, 11:45 UTCJul 21, 13:25 UTC1h 40m
2026-07-21 DAL488 MCO → MSP Jul 21, 00:00 UTCJul 21, 02:05 UTC2h 5m
2026-07-20 DAL488 MCO → MSP Jul 20, 20:20 UTCJul 20, 22:40 UTC2h 20m
2026-07-20 DAL2450 - Jul 20, 15:20 UTCJul 20, 16:00 UTC40m
2026-07-20 DAL1489 ATL → JAX Jul 20, 03:20 UTCJul 20, 04:20 UTC1h 0m
2026-07-19 DAL1836 PUJ → ATL Jul 19, 20:59 UTCJul 20, 00:00 UTC3h 1m
2026-07-19 DAL1836 PUJ → ATL Jul 19, 16:15 UTCJul 20, 00:00 UTC7h 45m
2026-07-19 DAL1352 - Jul 19, 12:15 UTCJul 19, 13:25 UTC1h 10m
2026-07-18 DAL959 DEN → ATL Jul 18, 22:25 UTCJul 18, 23:45 UTC1h 20m
2026-07-18 DAL2886 ATL → AUS Jul 18, 14:40 UTCJul 18, 15:20 UTC40m
2026-07-18 DAL1269 PHL → ATL Jul 18, 11:20 UTCJul 18, 12:50 UTC1h 30m
2026-07-18 DAL2642 ATL → PHL Jul 18, 05:10 UTCJul 18, 06:45 UTC1h 35m
2026-07-18 DAL2642 ATL → PHL Jul 18, 05:09 UTCJul 18, 06:39 UTC1h 30m
2026-07-18 DAL1295 - Jul 18, 01:45 UTCJul 18, 03:35 UTC1h 51m
2026-07-17 DAL1295 ATL → FLL Jul 17, 22:29 UTCJul 18, 00:04 UTC1h 35m
2026-07-17 DAL1512 - Jul 17, 18:05 UTCJul 17, 19:25 UTC1h 20m
2026-07-17 DAL1512 ATL → FLL Jul 17, 14:50 UTCJul 17, 16:29 UTC1h 40m

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 N327DN page for operator, model, and routing details .

Mode-S A388A9 frequently asked

What is Mode-S code A388A9?
A388A9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N327DN.
Where is Mode-S A388A9 registered?
Mode-S code A388A9 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 A388A9 broadcasting right now?
Yes. Mode-S A388A9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A388A9, octal 50704251, decimal 10,717,353.
What flights does A388A9 operate?
Mode-S A388A9 has broadcast 20 distinct callsigns, including DAL1311, DAL838, DAL2401, DAL893, DAL1190.