Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AAC71D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N794CK · BOEING 777-200LR · operated by DAE 35609 TRUST

Hex
AAC71D
Octal
52543435
Decimal
11,192,093
Country
US
Tail
N794CK
Type
B77L
No current signal · last broadcast 47m ago
Flights observed
122
Distinct callsigns
20
Country
US
Last broadcast
47m ago

Last known position

Most recent position reported by Mode-S AAC71D.

Country allocation

The ICAO 24-bit address AAC71D 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
CKS255 Kalitta Air 17 2026-05-17
CKS243 Kalitta Air 14 2026-05-28
CKS240 Kalitta Air 10 2026-05-13
CKS241 Kalitta Air 9 2026-05-14
CKS206 Kalitta Air 8 2026-05-29
CKS272 Kalitta Air 6 2026-05-10
CKS256 Kalitta Air 6 2026-05-11
CKS242 Kalitta Air 6 2026-04-16
CKS202 Kalitta Air 6 2026-05-16
CKS253 Kalitta Air 5 2026-05-25
CKS271 Kalitta Air 4 2026-05-09
CKS248 Kalitta Air 4 2026-05-23
CKS247 Kalitta Air 4 2026-05-23
CKS290 Kalitta Air 3 2026-04-26
CKS254 Kalitta Air 3 2026-04-29
CKS294 Kalitta Air 2 2026-05-27
CKS291 Kalitta Air 2 2026-04-27
CKS264 Kalitta Air 2 2026-05-21
CKS263 Kalitta Air 2 2026-05-21
CKS262 Kalitta Air 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CKS209 JFK → BAH May 29, 15:40 UTCMay 30, 00:50 UTC9h 10m
2026-05-29 CKS206 KWI → AMS May 29, 08:25 UTCMay 29, 12:35 UTC4h 10m
2026-05-28 CKS206 KWI → AMS May 28, 16:45 UTCMay 29, 05:50 UTC13h 5m
2026-05-28 CKS243 LEJ → CVG May 28, 09:40 UTCMay 28, 12:05 UTC2h 25m
2026-05-27 CKS243 LEJ → CVG May 27, 23:25 UTCMay 28, 06:45 UTC7h 20m
2026-05-27 CKS243 LEJ → CVG May 27, 12:50 UTCMay 27, 21:25 UTC8h 35m
2026-05-27 CKS243 LEJ → CVG May 27, 12:00 UTCMay 27, 12:20 UTC20m
2026-05-27 CKS294 LAX → ICN May 27, 06:04 UTCMay 27, 08:55 UTC2h 51m
2026-05-26 CKS294 LAX → ICN May 26, 08:45 UTCMay 26, 22:50 UTC14h 5m
2026-05-25 CKS253 CVG → EMA May 25, 20:34 UTCMay 26, 02:04 UTC5h 30m
2026-05-25 CKS253 CVG → EMA May 25, 08:55 UTCMay 25, 18:50 UTC9h 55m
2026-05-25 CKS206 KWI → AMS May 25, 05:20 UTCMay 25, 05:45 UTC25m
2026-05-25 CKS206 KWI → AMS May 25, 02:40 UTCMay 25, 04:40 UTC2h 0m
2026-05-24 CKS206 KWI → AMS May 24, 09:55 UTCMay 24, 23:45 UTC13h 50m
2026-05-23 CKS248 LEJ → CVG May 23, 22:45 UTCMay 24, 07:25 UTC8h 40m
2026-05-23 CKS248 LEJ → CVG May 23, 17:05 UTCMay 23, 20:40 UTC3h 36m
2026-05-23 CKS247 CVG → LEJ May 23, 09:10 UTCMay 23, 12:45 UTC3h 35m
2026-05-22 CKS247 CVG → LEJ May 22, 11:55 UTCMay 22, 19:15 UTC7h 20m
2026-05-21 CKS264 BRU → CVG May 21, 19:35 UTCMay 22, 03:35 UTC8h 0m
2026-05-21 CKS263 CVG → BRU May 21, 09:30 UTCMay 21, 16:45 UTC7h 15m
2026-05-20 CKS262 BRU → CVG May 20, 20:10 UTCMay 21, 04:50 UTC8h 40m
2026-05-20 CKS261 CVG → BRU May 20, 09:55 UTCMay 20, 17:25 UTC7h 30m
2026-05-19 CKS264 BRU → CVG May 19, 20:35 UTCMay 20, 04:50 UTC8h 16m
2026-05-19 CKS263 CVG → BRU May 19, 11:00 UTCMay 19, 18:20 UTC7h 20m
2026-05-18 CKS262 BRU → CVG May 18, 20:35 UTCMay 19, 04:50 UTC8h 15m
2026-05-18 CKS261 CVG → BRU May 18, 07:25 UTCMay 18, 14:50 UTC7h 25m
2026-05-17 CKS255 CVG → LAX May 17, 20:10 UTCMay 17, 21:35 UTC1h 25m
2026-05-17 CKS255 CVG → LAX May 17, 10:55 UTCMay 17, 17:01 UTC6h 5m
2026-05-17 CKS255 CVG → LAX May 17, 00:05 UTCMay 17, 09:05 UTC9h 0m
2026-05-16 CKS255 CVG → LAX May 16, 23:15 UTCMay 16, 23:30 UTC15m
2026-05-16 CKS202 SYD → SIN May 16, 12:31 UTCMay 16, 12:50 UTC20m
2026-05-16 CKS202 SYD → SIN May 16, 09:06 UTCMay 16, 11:55 UTC2h 50m
2026-05-15 CKS202 SYD → SIN May 15, 17:35 UTCMay 16, 06:31 UTC12h 56m
2026-05-14 CKS241 MIA → CVG May 14, 23:05 UTCMay 15, 01:15 UTC2h 10m
2026-05-14 CKS241 MIA → CVG May 14, 13:01 UTCMay 14, 20:35 UTC7h 35m
2026-05-13 CKS241 MIA → CVG May 13, 23:55 UTCMay 14, 09:10 UTC9h 15m
2026-05-13 CKS240 CVG → ICN May 13, 08:35 UTCMay 13, 18:55 UTC10h 20m
2026-05-12 CKS240 CVG → ICN May 12, 22:05 UTCMay 13, 06:55 UTC8h 50m
2026-05-12 CKS241 MIA → CVG May 12, 10:50 UTCMay 12, 18:00 UTC7h 10m
2026-05-12 CKS241 MIA → CVG May 12, 02:45 UTCMay 12, 09:00 UTC6h 15m
2026-05-11 CKS256 LAX → CVG May 11, 19:55 UTCMay 11, 20:15 UTC20m
2026-05-11 CKS256 LAX → CVG May 11, 17:05 UTCMay 11, 19:20 UTC2h 15m
2026-05-11 CKS256 LAX → CVG May 11, 02:40 UTCMay 11, 14:50 UTC12h 10m
2026-05-10 CKS256 LAX → CVG May 10, 07:30 UTCMay 10, 12:19 UTC4h 50m
2026-05-10 CKS272 CVG → NGO May 10, 02:55 UTCMay 10, 03:35 UTC40m
2026-05-09 CKS272 CVG → NGO May 9, 19:49 UTCMay 9, 20:30 UTC40m
2026-05-09 CKS272 CVG → NGO May 9, 10:40 UTCMay 9, 12:10 UTC1h 30m
2026-05-09 CKS271 MIA → VCP May 9, 01:05 UTCMay 9, 08:20 UTC7h 15m
2026-05-08 CKS243 LEJ → CVG May 8, 10:59 UTCMay 8, 18:00 UTC7h 1m
2026-05-07 CKS243 LEJ → CVG May 7, 23:14 UTCMay 8, 08:24 UTC9h 10m

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 N794CK page for operator, model, and routing details .

Mode-S AAC71D frequently asked

What is Mode-S code AAC71D?
AAC71D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N794CK.
Where is Mode-S AAC71D registered?
Mode-S code AAC71D 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 AAC71D broadcasting right now?
No active broadcast right now. Last signal was 47m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAC71D, octal 52543435, decimal 11,192,093.
What flights does AAC71D operate?
Mode-S AAC71D has broadcast 20 distinct callsigns, including CKS255, CKS243, CKS240, CKS241, CKS206.