Apparatus

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sensors Mode-S transponder

AA70B1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N772CK · BOEING 777-200LR · operated by DAE 35607 TRUST

Hex
AA70B1
Octal
52470261
Decimal
11,169,969
Country
US
Tail
N772CK
Type
B77L
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
252
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S AA70B1.

Country allocation

The ICAO 24-bit address AA70B1 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
CKS273 Kalitta Air 23 2026-07-26
CKS255 - 20 2026-07-12
CKS241 Kalitta Air 16 2026-05-28
CKS254 - 15 2026-07-08
CKS270 - 14 2026-06-24
CKS272 Kalitta Air 10 2026-07-24
CKS253 Kalitta Air 10 2026-07-22
CKS240 - 9 2026-06-16
CKS204 Kalitta Air 9 2026-05-25
CKS292 Kalitta Air 8 2026-06-07
CKS281 Kalitta Air 7 2026-04-14
CKS262 - 7 2026-07-16
CKS264 - 6 2026-07-15
CKS261 - 6 2026-07-15
CKS252 - 6 2026-06-20
CKS202 Kalitta Air 6 2026-07-21
CKS200 - 6 2026-04-18
CKS291 Kalitta Air 5 2026-06-08
CKS280 - 5 2026-04-13
CKS263 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CKS273 HKG → ANC Jul 26, 20:25 UTCJul 26, 21:00 UTC35m
2026-07-26 CKS273 HKG → ANC Jul 26, 10:05 UTCJul 26, 12:10 UTC2h 5m
2026-07-26 CKS273 HKG → ANC Jul 26, 04:00 UTCJul 26, 07:40 UTC3h 41m
2026-07-25 CKS273 HKG → ANC Jul 25, 06:20 UTCJul 25, 10:00 UTC3h 40m
2026-07-24 CKS272 CVG → NGO Jul 24, 01:40 UTCJul 24, 12:10 UTC10h 30m
2026-07-23 CKS272 CVG → NGO Jul 23, 23:30 UTCJul 23, 23:40 UTC10m
2026-07-23 CKS242 CVG → LEJ Jul 23, 15:10 UTCJul 23, 18:30 UTC3h 20m
2026-07-22 CKS242 CVG → LEJ Jul 22, 23:50 UTCJul 23, 12:50 UTC13h 0m
2026-07-22 CKS253 CVG → EMA Jul 22, 20:10 UTCJul 22, 21:40 UTC1h 30m
2026-07-22 CKS253 CVG → EMA Jul 22, 16:15 UTCJul 22, 17:25 UTC1h 10m
2026-07-21 CKS253 CVG → EMA Jul 21, 23:15 UTCJul 22, 13:40 UTC14h 25m
2026-07-21 CKS202 SYD → SIN Jul 21, 09:10 UTCJul 21, 12:55 UTC3h 45m
2026-07-20 CKS202 SYD → SIN Jul 20, 17:25 UTCJul 21, 06:50 UTC13h 24m
2026-07-19 CKS232 CVG → LAX Jul 19, 11:40 UTCJul 19, 19:15 UTC7h 35m
2026-07-19 CKS232 CVG → LAX Jul 19, 07:20 UTCJul 19, 08:50 UTC1h 30m
2026-07-18 CKS232 CVG → LAX Jul 18, 15:35 UTCJul 18, 19:30 UTC3h 55m
2026-07-18 CKS232 CVG → LAX Jul 18, 04:50 UTCJul 18, 10:20 UTC5h 30m
2026-07-18 CKS232 CVG → LAX Jul 18, 02:50 UTCJul 18, 03:05 UTC15m
2026-07-17 CKS231 - Jul 17, 16:10 UTCJul 17, 23:50 UTC7h 40m
2026-07-17 CKS231 - Jul 17, 12:45 UTCJul 17, 13:35 UTC50m
2026-07-16 CKS231 - Jul 16, 20:39 UTCJul 17, 06:40 UTC10h 0m
2026-07-16 CKS262 - Jul 16, 09:40 UTCJul 16, 17:40 UTC8h 0m
2026-07-15 CKS261 - Jul 15, 23:25 UTCJul 16, 07:00 UTC7h 35m
2026-07-15 CKS264 BRU → CVG Jul 15, 13:10 UTCJul 15, 21:00 UTC7h 50m
2026-07-14 CKS263 - Jul 14, 11:15 UTCJul 14, 19:10 UTC7h 55m
2026-07-13 CKS262 - Jul 13, 19:30 UTCJul 14, 03:10 UTC7h 40m
2026-07-13 CKS261 - Jul 13, 07:50 UTCJul 13, 15:35 UTC7h 45m
2026-07-12 CKS255 - Jul 12, 22:30 UTCJul 12, 23:50 UTC1h 20m
2026-07-12 CKS255 ANC → JFK Jul 12, 13:35 UTCJul 12, 19:45 UTC6h 10m
2026-07-11 CKS255 HKG → ANC Jul 11, 23:25 UTCJul 12, 08:55 UTC9h 30m
2026-07-11 CKS202 - Jul 11, 10:10 UTCJul 11, 14:00 UTC3h 50m
2026-07-10 CKS202 - Jul 10, 17:50 UTCJul 11, 06:10 UTC12h 20m
2026-07-09 CKS255 JFK → CVG Jul 9, 20:40 UTCJul 9, 22:10 UTC1h 30m
2026-07-09 CKS255 YHM → JFK Jul 9, 16:35 UTCJul 9, 17:50 UTC1h 15m
2026-07-08 CKS255 HKG → YHM Jul 8, 23:00 UTCJul 9, 14:20 UTC15h 20m
2026-07-08 CKS254 - Jul 8, 10:40 UTCJul 8, 13:55 UTC3h 15m
2026-07-07 CKS254 - Jul 7, 17:45 UTCJul 8, 06:25 UTC12h 40m
2026-07-05 CKS286 LEJ → CVG Jul 5, 09:15 UTCJul 5, 18:05 UTC8h 50m
2026-07-04 CKS287 - Jul 4, 14:05 UTCJul 5, 00:20 UTC10h 15m
2026-07-03 CKS287 - Jul 3, 22:40 UTCJul 4, 11:20 UTC12h 40m
2026-07-03 CKS206 - Jul 3, 09:00 UTCJul 3, 13:00 UTC4h 0m
2026-07-02 CKS206 - Jul 2, 18:00 UTCJul 3, 06:20 UTC12h 20m
2026-07-01 CKS262 BRU → CVG Jul 1, 19:55 UTCJul 2, 04:40 UTC8h 45m
2026-07-01 CKS261A - Jul 1, 10:00 UTCJul 1, 17:15 UTC7h 15m
2026-06-30 CKS264 BRU → CVG Jun 30, 19:55 UTCJul 1, 04:20 UTC8h 25m
2026-06-30 CKS263 - Jun 30, 09:50 UTCJun 30, 17:05 UTC7h 15m
2026-06-29 CKS262 BRU → CVG Jun 29, 19:39 UTCJun 30, 03:45 UTC8h 6m
2026-06-29 CKS261 CVG → BRU Jun 29, 07:40 UTCJun 29, 14:54 UTC7h 15m
2026-06-28 CKS273 - Jun 28, 15:34 UTCJun 28, 21:30 UTC5h 55m
2026-06-28 CKS273 - Jun 28, 04:59 UTCJun 28, 13:19 UTC8h 20m

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 N772CK page for operator, model, and routing details .

Mode-S AA70B1 frequently asked

What is Mode-S code AA70B1?
AA70B1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N772CK.
Where is Mode-S AA70B1 registered?
Mode-S code AA70B1 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 AA70B1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA70B1, octal 52470261, decimal 11,169,969.
What flights does AA70B1 operate?
Mode-S AA70B1 has broadcast 20 distinct callsigns, including CKS273, CKS255, CKS241, CKS254, CKS270.