Apparatus

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sensors Mode-S transponder

A8D327

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N668NK · AIRBUS A-321 · operated by SPIRIT AIRLINES LLC

Hex
A8D327
Octal
52151447
Decimal
11,064,103
Country
US
Tail
N668NK
Type
A321
No current signal · last broadcast 1d ago
Flights observed
107
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A8D327.

Country allocation

The ICAO 24-bit address A8D327 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
NKS2826 Spirit Airlines 6 2026-04-30
NKS265 Spirit Airlines 6 2026-04-30
NKS2827 Spirit Airlines 5 2026-04-30
NKS268 Spirit Airlines 4 2026-04-28
NNKS2226 - 3 2026-04-13
NKS935 Spirit Airlines 3 2026-04-17
NKS784 Spirit Airlines 3 2026-04-19
NKS783 - 3 2026-04-19
NKS606 Spirit Airlines 3 2026-04-20
NKS605 Spirit Airlines 3 2026-04-20
NKS208 Spirit Airlines 3 2026-04-13
NKS1162 Spirit Airlines 3 2026-04-14
NKS930 Spirit Airlines 2 2026-04-17
NKS654 Spirit Airlines 2 2026-04-15
NKS609 - 2 2026-04-20
NKS601 Spirit Airlines 2 2026-04-15
NKS462 Spirit Airlines 2 2026-05-01
NKS262 Spirit Airlines 2 2026-04-25
NKS260 Spirit Airlines 2 2026-04-24
NKS257 Spirit Airlines 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 NKS9968 - May 28, 20:05 UTCMay 28, 23:50 UTC3h 45m
2026-05-01 NKS255 IAH → SAL May 1, 22:25 UTCMay 2, 00:20 UTC1h 55m
2026-05-01 NKS255 IAH → SAL May 1, 22:22 UTCMay 2, 00:22 UTC2h 0m
2026-05-01 NKS462 LAX → MSY May 1, 16:49 UTCMay 1, 20:40 UTC3h 51m
2026-05-01 NKS462 LAX → MSY May 1, 16:50 UTCMay 1, 20:50 UTC4h 0m
2026-05-01 NKS461 DTW → FLL May 1, 13:30 UTCMay 1, 14:40 UTC1h 10m
2026-05-01 NKS460 TPA → PHL May 1, 10:15 UTCMay 1, 11:40 UTC1h 25m
2026-05-01 NKS473 EWR → MSY May 1, 01:35 UTCMay 1, 04:25 UTC2h 50m
2026-04-30 NKS2827 LAS → IAH Apr 30, 19:05 UTCApr 30, 21:40 UTC2h 35m
2026-04-30 NKS2826 IAH → LAS Apr 30, 14:35 UTCApr 30, 17:35 UTC3h 0m
2026-04-30 NKS2826 IAH → LAS Apr 30, 14:33 UTCApr 30, 17:35 UTC3h 2m
2026-04-30 NKS265 ACY → FLL Apr 30, 10:40 UTCApr 30, 13:00 UTC2h 20m
2026-04-28 NKS268 FLL → ACY Apr 28, 23:10 UTCApr 29, 00:59 UTC1h 50m
2026-04-28 NKS2827 LAS → IAH Apr 28, 19:05 UTCApr 28, 21:40 UTC2h 35m
2026-04-28 NKS2826 IAH → LAS Apr 28, 14:45 UTCApr 28, 17:45 UTC3h 0m
2026-04-28 NKS265 ACY → FLL Apr 28, 10:55 UTCApr 28, 13:25 UTC2h 30m
2026-04-27 NKS268 FLL → ACY Apr 27, 23:05 UTCApr 28, 00:55 UTC1h 50m
2026-04-27 NKS2827 LAS → IAH Apr 27, 19:05 UTCApr 27, 21:30 UTC2h 25m
2026-04-27 NKS2826 IAH → LAS Apr 27, 14:40 UTCApr 27, 17:40 UTC3h 0m
2026-04-27 NKS265 ACY → FLL Apr 27, 10:45 UTCApr 27, 13:15 UTC2h 30m
2026-04-26 NKS268 FLL → ACY Apr 26, 23:10 UTCApr 27, 01:10 UTC2h 0m
2026-04-26 NKS2827 LAS → IAH Apr 26, 19:05 UTCApr 26, 21:25 UTC2h 20m
2026-04-26 NKS2826 IAH → LAS Apr 26, 14:30 UTCApr 26, 17:35 UTC3h 5m
2026-04-26 NKS265 ACY → FLL Apr 26, 10:45 UTCApr 26, 13:15 UTC2h 30m
2026-04-26 NKS265 ACY → FLL Apr 26, 10:44 UTCApr 26, 13:14 UTC2h 30m
2026-04-25 NKS268 FLL → ACY Apr 25, 23:05 UTCApr 26, 01:05 UTC2h 0m
2026-04-25 NKS2827 LAS → IAH Apr 25, 18:55 UTCApr 25, 21:20 UTC2h 25m
2026-04-25 NKS2826 IAH → LAS Apr 25, 14:35 UTCApr 25, 17:35 UTC3h 0m
2026-04-25 NKS265 ACY → FLL Apr 25, 10:45 UTCApr 25, 13:05 UTC2h 20m
2026-04-25 NKS262 FLL → ACY Apr 25, 00:45 UTCApr 25, 02:15 UTC1h 30m
2026-04-25 NKS262 FLL → ACY Apr 25, 00:44 UTCApr 25, 02:12 UTC1h 28m
2026-04-24 NKS261 ORD → SJU Apr 24, 22:25 UTCApr 24, 23:35 UTC1h 10m
2026-04-24 NKS260 SAN → LAS Apr 24, 19:40 UTCApr 24, 20:40 UTC1h 0m
2026-04-24 NKS260 SAN → LAS Apr 24, 19:40 UTCApr 24, 20:40 UTC1h 0m
2026-04-24 NKS396 LAS → PHL Apr 24, 16:55 UTCApr 24, 18:25 UTC1h 30m
2026-04-24 NKS397 ORD → MIA Apr 24, 13:25 UTCApr 24, 14:55 UTC1h 30m
2026-04-24 NKS257 FLL → IAH Apr 24, 10:25 UTCApr 24, 11:45 UTC1h 20m
2026-04-24 NKS257 FLL → IAH Apr 24, 10:22 UTCApr 24, 11:46 UTC1h 24m
2026-04-24 NKS390 MCO → DFW Apr 24, 02:05 UTCApr 24, 03:45 UTC1h 40m
2026-04-23 NKS389 FLL → LGA Apr 23, 23:20 UTCApr 24, 00:55 UTC1h 35m
2026-04-23 NKS946 CTG → FLL Apr 23, 20:35 UTCApr 23, 21:05 UTC30m
2026-04-23 NKS859 FLL → CTG Apr 23, 14:50 UTCApr 23, 15:10 UTC20m
2026-04-23 NKS1601 IAH → ATL Apr 23, 10:30 UTCApr 23, 13:05 UTC2h 35m
2026-04-23 NKS1544 FLL → DTW Apr 23, 01:30 UTCApr 23, 04:05 UTC2h 35m
2026-04-22 NKS1543 LGA → FLL Apr 22, 21:00 UTCApr 22, 23:30 UTC2h 30m
2026-04-22 NKS1542 IAH → DTW Apr 22, 18:05 UTCApr 22, 19:20 UTC1h 15m
2026-04-22 NKS1541 DTW → IAH Apr 22, 15:05 UTCApr 22, 16:25 UTC1h 20m
2026-04-22 NKS1540 ACY → FLL Apr 22, 11:25 UTCApr 22, 13:55 UTC2h 30m
2026-04-21 NKS1612 IAH → PHL Apr 21, 03:30 UTCApr 21, 03:45 UTC15m
2026-04-21 NKS1612 IAH → PHL Apr 21, 03:25 UTCApr 21, 04:02 UTC37m

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 N668NK page for operator, model, and routing details .

Mode-S A8D327 frequently asked

What is Mode-S code A8D327?
A8D327 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N668NK.
Where is Mode-S A8D327 registered?
Mode-S code A8D327 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 A8D327 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8D327, octal 52151447, decimal 11,064,103.
What flights does A8D327 operate?
Mode-S A8D327 has broadcast 20 distinct callsigns, including NKS2826, NKS265, NKS2827, NKS268, NNKS2226.