Apparatus

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sensors Mode-S transponder

AA6CFA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N771CK · BOEING 777-300ER · operated by BANK OF UTAH TRUSTEE

Hex
AA6CFA
Octal
52466372
Decimal
11,169,018
Country
US
Tail
N771CK
Type
B77W
Broadcasting now · callsign CKS919 · 31,000 ft
Flights observed
101
Distinct callsigns
15
Country
US
Last broadcast
1h ago

Current position

AA6CFA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA6CFA 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 15 distinct

Callsign Airline Flights Last seen
CKS217 Kalitta Air 18 2026-04-23
CKS235 Kalitta Air 12 2026-05-10
CKS234 Kalitta Air 11 2026-05-09
CKS216 Kalitta Air 11 2026-04-23
CKS915 Kalitta Air 9 2026-05-28
CKS919 Kalitta Air 7 2026-05-30
CKS910 Kalitta Air 5 2026-05-29
CKS218 Kalitta Air 5 2026-05-03
CKS979 Kalitta Air 4 2026-05-25
CKS970 Kalitta Air 4 2026-05-24
CKS916 Kalitta Air 4 2026-05-26
CKS219 Kalitta Air 4 2026-05-04
CKS254 Kalitta Air 3 2026-05-06
CKS241 Kalitta Air 3 2026-05-07
CKS9771 Kalitta Air 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CKS919 PVG → ANC May 30, 08:20 UTCMay 30, 08:30 UTC10m
2026-05-29 CKS910 JFK → ANC May 29, 10:05 UTCMay 30, 06:05 UTC20h 0m
2026-05-28 CKS910 JFK → ANC May 28, 20:45 UTCMay 29, 02:50 UTC6h 5m
2026-05-28 CKS915 ANC → CVG May 28, 12:10 UTCMay 28, 17:30 UTC5h 20m
2026-05-27 CKS915 ANC → CVG May 27, 14:45 UTCMay 28, 06:00 UTC15h 15m
2026-05-27 CKS915 ANC → CVG May 27, 08:35 UTCMay 28, 06:00 UTC21h 25m
2026-05-26 CKS916 YYZ → ANC May 26, 22:59 UTCMay 27, 04:39 UTC5h 40m
2026-05-25 CKS979 ANC → ORD May 25, 13:20 UTCMay 25, 18:45 UTC5h 25m
2026-05-24 CKS979 ANC → ORD May 24, 14:45 UTCMay 25, 10:05 UTC19h 20m
2026-05-24 CKS970 YYZ → ANC May 24, 08:40 UTCMay 25, 08:30 UTC23h 50m
2026-05-23 CKS970 YYZ → ANC May 23, 22:50 UTCMay 24, 04:35 UTC5h 45m
2026-05-23 CKS919 PVG → ANC May 23, 08:35 UTCMay 23, 14:15 UTC5h 40m
2026-05-22 CKS919 PVG → ANC May 22, 14:40 UTCMay 23, 06:30 UTC15h 50m
2026-05-22 CKS910 JFK → ANC May 22, 08:40 UTCMay 23, 06:30 UTC21h 49m
2026-05-21 CKS910 JFK → ANC May 21, 23:35 UTCMay 22, 05:35 UTC6h 0m
2026-05-21 CKS915 ANC → CVG May 21, 10:35 UTCMay 21, 16:01 UTC5h 25m
2026-05-20 CKS915 ANC → CVG May 20, 14:20 UTCMay 21, 07:25 UTC17h 5m
2026-05-20 CKS915 ANC → CVG May 20, 08:35 UTCMay 21, 07:25 UTC22h 50m
2026-05-20 CKS916 YYZ → ANC May 20, 08:10 UTCMay 21, 06:30 UTC22h 20m
2026-05-19 CKS916 YYZ → ANC May 19, 22:50 UTCMay 20, 04:35 UTC5h 45m
2026-05-18 CKS979 ANC → ORD May 18, 13:50 UTCMay 18, 19:20 UTC5h 29m
2026-05-17 CKS979 ANC → ORD May 17, 16:45 UTCMay 18, 11:30 UTC18h 45m
2026-05-17 CKS970 YYZ → ANC May 17, 10:50 UTCMay 18, 10:30 UTC23h 40m
2026-05-17 CKS970 YYZ → ANC May 17, 01:25 UTCMay 17, 07:20 UTC5h 55m
2026-05-16 CKS919 PVG → ANC May 16, 17:35 UTCMay 16, 23:05 UTC5h 30m
2026-05-15 CKS919 PVG → ANC May 15, 22:05 UTCMay 16, 14:20 UTC16h 16m
2026-05-15 CKS919 PVG → ANC May 15, 16:35 UTCMay 16, 14:20 UTC21h 46m
2026-05-15 CKS919 PVG → ANC May 15, 16:05 UTCMay 16, 14:20 UTC22h 16m
2026-05-15 CKS910 JFK → ANC May 15, 05:45 UTCMay 15, 11:30 UTC5h 45m
2026-05-14 CKS915 ANC → CVG May 14, 21:20 UTCMay 15, 03:00 UTC5h 40m
2026-05-14 CKS915 ANC → CVG May 14, 04:25 UTCMay 14, 19:35 UTC15h 10m
2026-05-13 CKS915 ANC → CVG May 13, 22:35 UTCMay 14, 19:35 UTC21h 0m
2026-05-13 CKS916 YYZ → ANC May 13, 12:35 UTCMay 13, 18:25 UTC5h 50m
2026-05-11 CKS9771 OSC → JFK May 11, 02:45 UTCMay 11, 03:30 UTC45m
2026-05-10 CKS235 HKG → ANC May 10, 22:49 UTCMay 11, 00:49 UTC2h 0m
2026-05-10 CKS235 HKG → ANC May 10, 11:15 UTCMay 10, 18:25 UTC7h 10m
2026-05-10 CKS235 HKG → ANC May 10, 01:20 UTCMay 10, 09:45 UTC8h 25m
2026-05-10 CKS235 HKG → ANC May 10, 00:30 UTCMay 10, 00:49 UTC20m
2026-05-09 CKS234 MXP → EWR May 9, 07:40 UTCMay 9, 12:05 UTC4h 25m
2026-05-08 CKS234 MXP → EWR May 8, 11:40 UTCMay 9, 01:15 UTC13h 35m
2026-05-07 CKS241 MIA → CVG May 7, 20:50 UTCMay 7, 22:50 UTC2h 0m
2026-05-07 CKS241 MIA → CVG May 7, 11:25 UTCMay 7, 18:25 UTC7h 0m
2026-05-07 CKS241 MIA → CVG May 7, 00:25 UTCMay 7, 09:45 UTC9h 20m
2026-05-06 CKS254 LEJ → CVG May 6, 12:40 UTCMay 6, 13:05 UTC25m
2026-05-06 CKS254 LEJ → CVG May 6, 10:01 UTCMay 6, 12:05 UTC2h 5m
2026-05-05 CKS254 LEJ → CVG May 5, 17:00 UTCMay 6, 06:25 UTC13h 24m
2026-05-04 CKS219 NGO → CVG May 4, 17:10 UTCMay 5, 04:20 UTC11h 11m
2026-05-04 CKS219 NGO → CVG May 4, 13:20 UTCMay 4, 14:30 UTC1h 10m
2026-05-03 CKS218 CAI → OST May 3, 13:15 UTCMay 3, 13:45 UTC30m
2026-05-03 CKS218 CAI → OST May 3, 11:50 UTCMay 3, 12:50 UTC1h 0m

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 N771CK page for operator, model, and routing details .

Mode-S AA6CFA frequently asked

What is Mode-S code AA6CFA?
AA6CFA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N771CK.
Where is Mode-S AA6CFA registered?
Mode-S code AA6CFA 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 AA6CFA broadcasting right now?
Yes. Mode-S AA6CFA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA6CFA, octal 52466372, decimal 11,169,018.
What flights does AA6CFA operate?
Mode-S AA6CFA has broadcast 15 distinct callsigns, including CKS217, CKS235, CKS234, CKS216, CKS915.