Apparatus

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sensors Mode-S transponder

AA90C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N780CK · BOEING 777-300ER · operated by BANK OF UTAH TRUSTEE

Hex
AA90C2
Octal
52510302
Decimal
11,178,178
Country
US
Tail
N780CK
Type
B77W
Broadcasting now · callsign CKS272 · 34,000 ft
Flights observed
114
Distinct callsigns
20
Country
US
Last broadcast
20m ago

Current position

AA90C2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA90C2 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
CKS253 - 10 2026-04-13
CKS243 Kalitta Air 10 2026-04-15
CKS551 Kalitta Air 8 2026-05-03
CKS281 Kalitta Air 6 2026-05-27
CKS252 Kalitta Air 6 2026-04-14
CKS219 Kalitta Air 6 2026-05-20
CKS218 Kalitta Air 6 2026-05-22
CKS610 Kalitta Air 4 2026-04-21
CKS550 Kalitta Air 4 2026-05-02
CKS286 Kalitta Air 4 2026-05-26
CKS242 Kalitta Air 4 2026-05-29
CKS285 Kalitta Air 3 2026-05-25
CKS283 Kalitta Air 3 2026-05-23
CKS282 Kalitta Air 3 2026-05-23
CKS259 Kalitta Air 3 2026-05-14
CKS209 Kalitta Air 3 2026-04-25
CKS9780 Kalitta Air 2 2026-04-26
CKS292 Kalitta Air 2 2026-05-07
CKS291 Kalitta Air 2 2026-05-08
CKS284 Kalitta Air 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CKS272 CVG → NGO May 29, 21:10 UTCMay 30, 00:30 UTC3h 20m
2026-05-29 CKS272 CVG → NGO May 29, 09:25 UTCMay 29, 09:40 UTC15m
2026-05-29 CKS242 CVG → LEJ May 29, 03:15 UTCMay 29, 06:35 UTC3h 20m
2026-05-28 CKS242 CVG → LEJ May 28, 12:15 UTCMay 29, 01:00 UTC12h 45m
2026-05-27 CKS280 CVG → LAX May 27, 14:20 UTCMay 28, 04:50 UTC14h 30m
2026-05-27 CKS281 LAX → LEJ May 27, 09:35 UTCMay 27, 10:05 UTC30m
2026-05-26 CKS281 LAX → LEJ May 26, 22:59 UTCMay 27, 02:44 UTC3h 45m
2026-05-26 CKS286 YHM → CVG May 26, 15:49 UTCMay 26, 19:30 UTC3h 40m
2026-05-26 CKS286 YHM → CVG May 26, 03:45 UTCMay 26, 04:04 UTC20m
2026-05-25 CKS285 LAX → LEJ May 25, 22:30 UTCMay 25, 23:10 UTC40m
2026-05-25 CKS285 LAX → LEJ May 25, 11:45 UTCMay 25, 15:30 UTC3h 45m
2026-05-23 CKS284 ANC → HKG May 23, 20:05 UTCMay 24, 11:30 UTC15h 25m
2026-05-23 CKS283 LEJ → LEJ May 23, 04:35 UTCMay 23, 16:20 UTC11h 45m
2026-05-23 CKS282 CVG → OSC May 23, 00:05 UTCMay 23, 01:45 UTC1h 40m
2026-05-22 CKS282 CVG → OSC May 22, 10:40 UTCMay 22, 10:50 UTC10m
2026-05-22 CKS218 CAI → OST May 22, 03:05 UTCMay 22, 07:00 UTC3h 55m
2026-05-21 CKS218 CAI → OST May 21, 10:25 UTCMay 21, 23:20 UTC12h 55m
2026-05-20 CKS219 NGO → CVG May 20, 17:10 UTCMay 21, 04:20 UTC11h 10m
2026-05-20 CKS219 NGO → CVG May 20, 13:20 UTCMay 20, 14:35 UTC1h 15m
2026-05-20 CKS218 CAI → OST May 20, 01:25 UTCMay 20, 03:20 UTC1h 55m
2026-05-19 CKS218 CAI → OST May 19, 10:10 UTCMay 19, 22:55 UTC12h 45m
2026-05-18 CKS219 NGO → CVG May 18, 17:25 UTCMay 19, 04:50 UTC11h 24m
2026-05-18 CKS219 NGO → CVG May 18, 13:25 UTCMay 18, 14:45 UTC1h 20m
2026-05-17 CKS218 CAI → OST May 17, 11:55 UTCMay 17, 13:40 UTC1h 45m
2026-05-16 CKS218 CAI → OST May 16, 17:55 UTCMay 17, 06:20 UTC12h 25m
2026-05-15 CKS219 NGO → CVG May 15, 19:45 UTCMay 16, 07:25 UTC11h 41m
2026-05-15 CKS219 NGO → CVG May 15, 15:30 UTCMay 15, 16:50 UTC1h 20m
2026-05-14 CKS258 LAX → CVG May 14, 22:15 UTCMay 15, 11:25 UTC13h 10m
2026-05-14 CKS259 CVG → LAX May 14, 11:15 UTCMay 14, 17:05 UTC5h 50m
2026-05-14 CKS259 CVG → LAX May 14, 00:30 UTCMay 14, 09:05 UTC8h 35m
2026-05-13 CKS259 CVG → LAX May 13, 23:45 UTCMay 14, 00:00 UTC15m
2026-05-13 CKS281 LAX → LEJ May 13, 07:45 UTCMay 13, 08:15 UTC30m
2026-05-12 CKS281 LAX → LEJ May 12, 21:15 UTCMay 13, 00:50 UTC3h 35m
2026-05-12 CKS286 YHM → CVG May 12, 14:45 UTCMay 12, 18:40 UTC3h 55m
2026-05-12 CKS286 YHM → CVG May 12, 03:35 UTCMay 12, 03:50 UTC15m
2026-05-11 CKS285 LAX → LEJ May 11, 12:10 UTCMay 11, 15:55 UTC3h 45m
2026-05-09 CKS284 ANC → HKG May 9, 23:55 UTCMay 10, 16:44 UTC16h 50m
2026-05-09 CKS283 LEJ → LEJ May 9, 20:40 UTCMay 9, 21:05 UTC25m
2026-05-09 CKS283 LEJ → LEJ May 9, 10:15 UTCMay 9, 13:55 UTC3h 40m
2026-05-08 CKS282 CVG → OSC May 8, 15:30 UTCMay 9, 06:55 UTC15h 25m
2026-05-08 CKS291 WRI → OSL May 8, 00:09 UTCMay 8, 11:09 UTC11h 0m
2026-05-07 CKS291 WRI → OSL May 7, 13:30 UTCMay 7, 21:45 UTC8h 15m
2026-05-07 CKS292 NRT → HKG May 7, 02:45 UTCMay 7, 09:40 UTC6h 55m
2026-05-06 CKS292 NRT → HKG May 6, 15:25 UTCMay 7, 00:45 UTC9h 20m
2026-05-06 CKS281 LAX → LEJ May 6, 10:50 UTCMay 6, 11:20 UTC30m
2026-05-06 CKS281 LAX → LEJ May 6, 00:05 UTCMay 6, 03:50 UTC3h 45m
2026-05-05 CKS247 CVG → LEJ May 5, 12:50 UTCMay 5, 20:55 UTC8h 5m
2026-05-03 CKS9770 OSC → CVG May 3, 20:20 UTCMay 3, 21:14 UTC55m
2026-05-03 CKS551 ANC → ORD May 3, 12:15 UTCMay 3, 17:20 UTC5h 5m
2026-05-03 CKS551 ANC → ORD May 3, 02:40 UTCMay 3, 08:50 UTC6h 9m

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 N780CK page for operator, model, and routing details .

Mode-S AA90C2 frequently asked

What is Mode-S code AA90C2?
AA90C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N780CK.
Where is Mode-S AA90C2 registered?
Mode-S code AA90C2 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 AA90C2 broadcasting right now?
Yes. Mode-S AA90C2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA90C2, octal 52510302, decimal 11,178,178.
What flights does AA90C2 operate?
Mode-S AA90C2 has broadcast 20 distinct callsigns, including CKS253, CKS243, CKS551, CKS281, CKS252.