Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 4h ago
Flights observed
416
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A388A9.

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
DAL2401 Delta Air Lines 10 2026-06-07
DAL838 Delta Air Lines 9 2026-06-06
DAL1311 Delta Air Lines 9 2026-06-06
DAL893 - 8 2026-07-11
DAL1190 Delta Air Lines 8 2026-05-15
DAL862 Delta Air Lines 6 2026-06-18
DAL665 Delta Air Lines 6 2026-04-15
DAL959 Delta Air Lines 5 2026-05-02
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
DAL2212 Delta Air Lines 5 2026-05-30
DAL2209 Delta Air Lines 5 2026-05-03
DAL1515 Delta Air Lines 5 2026-06-10
DAL1266 Delta Air Lines 5 2026-06-08
DAL1250 Delta Air Lines 5 2026-05-03
DAL1152 - 5 2026-06-17
DAL839 Delta Air Lines 4 2026-05-28
DAL399 Delta Air Lines 4 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL949 SEA → MSP Jul 14, 01:30 UTCJul 14, 04:20 UTC2h 50m
2026-07-13 DAL877 MSP → SEA Jul 13, 20:40 UTCJul 13, 23:55 UTC3h 15m
2026-07-13 DAL2901 ATL → MSP Jul 13, 17:05 UTCJul 13, 19:05 UTC2h 0m
2026-07-13 DAL1269 PHL → ATL Jul 13, 12:35 UTCJul 13, 14:15 UTC1h 40m
2026-07-13 DAL1269 PHL → ATL Jul 13, 12:35 UTCJul 13, 14:09 UTC1h 34m
2026-07-13 DAL2065 ATL → PHL Jul 13, 01:05 UTCJul 13, 02:50 UTC1h 45m
2026-07-12 DAL2270 PHL → ATL Jul 12, 20:05 UTCJul 12, 21:45 UTC1h 40m
2026-07-12 DAL2270 ATL → PHL Jul 12, 13:05 UTCJul 12, 14:35 UTC1h 30m
2026-07-11 DAL2711 - Jul 11, 23:20 UTCJul 12, 00:45 UTC1h 25m
2026-07-11 DAL2711 BWI → ATL Jul 11, 23:19 UTCJul 12, 00:42 UTC1h 23m
2026-07-11 DAL2711 ATL → BWI Jul 11, 15:25 UTCJul 11, 16:50 UTC1h 25m
2026-07-11 DAL893 DFW → ATL Jul 11, 12:10 UTCJul 11, 13:50 UTC1h 40m
2026-07-11 DAL3161 ATL → DFW Jul 11, 02:20 UTCJul 11, 04:01 UTC1h 40m
2026-07-10 DAL1372 - Jul 10, 23:30 UTCJul 11, 00:40 UTC1h 10m
2026-07-10 DAL1372 ATL → MCO Jul 10, 17:25 UTCJul 10, 18:25 UTC1h 0m
2026-07-10 DAL1052 MSP → ATL Jul 10, 13:40 UTCJul 10, 15:50 UTC2h 10m
2026-07-10 DAL1052 MSP → ATL Jul 10, 13:40 UTCJul 10, 15:53 UTC2h 13m
2026-07-10 DAL2752 - Jul 10, 10:25 UTCJul 10, 12:00 UTC1h 35m
2026-07-10 DAL1469 MSP → CVG Jul 10, 01:55 UTCJul 10, 03:15 UTC1h 20m
2026-06-21 DAL1878 CUN → MSP Jun 21, 19:24 UTCJun 21, 23:14 UTC3h 50m
2026-06-21 DAL1881 MSP → CUN Jun 21, 14:15 UTCJun 21, 17:50 UTC3h 35m
2026-06-20 DAL2695 - Jun 20, 22:45 UTCJun 21, 01:05 UTC2h 20m
2026-06-20 DAL2695 - Jun 20, 17:49 UTCJun 20, 21:00 UTC3h 10m
2026-06-20 DAL2090 ATL → MSP Jun 20, 14:19 UTCJun 20, 16:29 UTC2h 10m
2026-06-20 DAL1192 - Jun 20, 10:39 UTCJun 20, 11:40 UTC1h 0m
2026-06-20 DAL2839 - Jun 20, 01:55 UTCJun 20, 03:09 UTC1h 15m
2026-06-19 DAL1478 ATL → DTW Jun 19, 22:33 UTCJun 20, 00:02 UTC1h 29m
2026-06-19 DAL1478 ATL → DTW Jun 19, 22:34 UTCJun 20, 00:04 UTC1h 30m
2026-06-19 DAL641 CUN → ATL Jun 19, 17:58 UTCJun 19, 20:16 UTC2h 18m
2026-06-19 DAL641 - Jun 19, 14:24 UTCJun 19, 20:14 UTC5h 50m
2026-06-19 DAL2242 BOS → ATL Jun 19, 09:43 UTCJun 19, 12:06 UTC2h 23m
2026-06-19 DAL2242 BOS → ATL Jun 19, 09:44 UTCJun 19, 12:09 UTC2h 25m
2026-06-19 DAL821 ATL → BOS Jun 19, 01:52 UTCJun 19, 03:56 UTC2h 4m
2026-06-19 DAL821 ATL → BNH Jun 19, 01:54 UTCJun 19, 04:00 UTC2h 5m
2026-06-18 DAL638 BOS → ATL Jun 18, 19:35 UTCJun 18, 22:20 UTC2h 45m
2026-06-18 DAL638 BOS → ATL Jun 18, 19:32 UTCJun 18, 22:19 UTC2h 47m
2026-06-18 DAL862 TPA → LGA Jun 18, 15:50 UTCJun 18, 18:00 UTC2h 10m
2026-06-18 DAL862 TPA → LGA Jun 18, 15:49 UTCJun 18, 17:50 UTC2h 1m
2026-06-18 DAL349 - Jun 18, 14:10 UTCJun 18, 14:15 UTC5m
2026-06-18 DAL349 - Jun 18, 12:20 UTCJun 18, 14:15 UTC1h 55m
2026-06-18 DAL349 CLE → ATL Jun 18, 12:18 UTCJun 18, 13:55 UTC1h 37m
2026-06-18 DAL1320 ATL → CLE Jun 18, 03:20 UTCJun 18, 04:50 UTC1h 30m
2026-06-18 DAL1320 ATL → CLE Jun 18, 03:18 UTCJun 18, 04:50 UTC1h 32m
2026-06-17 DAL1267 MCO → BOS Jun 17, 22:40 UTCJun 18, 00:05 UTC1h 25m
2026-06-17 DAL1267 MCO → BOS Jun 17, 19:40 UTCJun 17, 21:05 UTC1h 25m
2026-06-17 DAL2923 JAX → ATL Jun 17, 17:35 UTCJun 17, 18:15 UTC40m
2026-06-17 DAL2923 JAX → ATL Jun 17, 14:55 UTCJun 17, 15:46 UTC50m
2026-06-17 DAL1152 - Jun 17, 10:30 UTCJun 17, 12:05 UTC1h 35m
2026-06-16 DAL1329 - Jun 16, 21:05 UTCJun 16, 22:45 UTC1h 40m
2026-06-16 DAL1329 ATL → PHL Jun 16, 21:05 UTCJun 16, 22:39 UTC1h 34m

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?
No active broadcast right now. Last signal was 4h ago.
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 DAL2401, DAL838, DAL1311, DAL893, DAL1190.