Apparatus

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sensors Mode-S transponder

A60B1E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N489MC · BOEING 747-400 · operated by ATLAS AIR INC

Hex
A60B1E
Octal
51405436
Decimal
10,881,822
Country
US
Tail
N489MC
Type
B744
No current signal · last broadcast 8d ago
Flights observed
164
Distinct callsigns
20
Country
US
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S A60B1E.

Country allocation

The ICAO 24-bit address A60B1E 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
GTI8560 - 10 2026-06-23
GTI8998 Atlas Air 9 2026-05-03
GTI8825 Atlas Air 9 2026-06-12
GTI8102 Atlas Air 9 2026-06-03
GTI512 - 9 2026-07-04
GTI8559 - 6 2026-06-27
GTI8997 Atlas Air 5 2026-05-02
GTI8977 Atlas Air 5 2026-04-14
GTI8976 - 5 2026-04-13
GTI8824 Atlas Air 4 2026-06-10
GTI8540 Atlas Air 4 2026-05-17
GTI8120 Atlas Air 4 2026-05-25
GTI031 Atlas Air 4 2026-05-12
CMB131 - 4 2026-04-15
GTI8917 Atlas Air 3 2026-04-19
GTI8834 Atlas Air 3 2026-04-24
GTI8581 - 3 2026-07-05
GTI8373 Atlas Air 3 2026-04-27
GTI8243 - 3 2026-06-26
GTI046 - 3 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-06 GTI9021 ANC → HKG Jul 6, 08:55 UTCJul 6, 09:15 UTC20m
2026-07-06 GTI9021 ANC → HKG Jul 6, 05:40 UTCJul 6, 06:10 UTC30m
2026-07-05 GTI8581 - Jul 5, 20:55 UTCJul 6, 02:25 UTC5h 30m
2026-07-05 GTI8581 - Jul 5, 09:20 UTCJul 5, 17:10 UTC7h 50m
2026-07-05 GTI8581 - Jul 5, 02:50 UTCJul 5, 07:30 UTC4h 40m
2026-07-04 GTI512 - Jul 4, 20:20 UTCJul 4, 23:30 UTC3h 10m
2026-07-04 GTI512 - Jul 4, 11:05 UTCJul 4, 16:55 UTC5h 50m
2026-07-03 GTI512 ICN → ANC Jul 3, 19:05 UTCJul 4, 08:15 UTC13h 10m
2026-07-02 GTI9811 ANC → ICN Jul 2, 06:15 UTCJul 2, 14:40 UTC8h 25m
2026-07-01 GTI9811 - Jul 1, 20:55 UTCJul 2, 03:00 UTC6h 5m
2026-06-27 GTI8559 ORD → CVG Jun 27, 17:39 UTCJun 27, 19:49 UTC2h 10m
2026-06-26 GTI8243 ANC → ORD Jun 26, 11:34 UTCJun 26, 16:54 UTC5h 20m
2026-06-26 GTI8243 - Jun 26, 02:09 UTCJun 26, 09:39 UTC7h 30m
2026-06-25 GTI8243 HHN → PSM Jun 25, 12:40 UTCJun 25, 13:00 UTC20m
2026-06-25 GTI8254 - Jun 25, 05:15 UTCJun 25, 06:00 UTC45m
2026-06-24 GTI9628 ORD → ICN Jun 24, 08:04 UTCJun 24, 22:14 UTC14h 10m
2026-06-23 GTI8560 - Jun 23, 23:24 UTCJun 24, 04:39 UTC5h 15m
2026-06-23 GTI8560 ICN → ANC Jun 23, 13:29 UTCJun 23, 21:14 UTC7h 45m
2026-06-21 GTI8560 - Jun 21, 10:04 UTCJun 21, 10:25 UTC20m
2026-06-21 GTI8559 - Jun 21, 02:40 UTCJun 21, 03:05 UTC25m
2026-06-20 GTI8559 - Jun 20, 17:54 UTCJun 20, 21:44 UTC3h 50m
2026-06-20 GTI8242 IND → HHN Jun 20, 02:40 UTCJun 20, 15:39 UTC13h 0m
2026-06-19 GTI512 - Jun 19, 16:29 UTCJun 19, 19:49 UTC3h 20m
2026-06-19 GTI512 - Jun 19, 06:35 UTCJun 19, 12:25 UTC5h 50m
2026-06-18 GTI512 ICN → ANC Jun 18, 15:05 UTCJun 19, 04:19 UTC13h 14m
2026-06-18 GTI9492 - Jun 18, 12:45 UTCJun 18, 13:10 UTC25m
2026-06-18 GTI9492 - Jun 18, 01:10 UTCJun 18, 08:40 UTC7h 30m
2026-06-14 GTI8298 NGU → HHN Jun 14, 09:50 UTCJun 14, 15:30 UTC5h 40m
2026-06-12 GTI8298 NGU → HHN Jun 12, 07:30 UTCJun 12, 17:50 UTC10h 20m
2026-06-12 GTI8825 HHN → BWI Jun 12, 00:45 UTCJun 12, 03:35 UTC2h 50m
2026-06-10 GTI8825 HHN → BWI Jun 10, 19:25 UTCJun 11, 02:55 UTC7h 30m
2026-06-10 GTI8824 BWI → HHN Jun 10, 13:05 UTCJun 10, 14:05 UTC1h 0m
2026-06-10 CMB137 - Jun 10, 02:10 UTCJun 10, 09:40 UTC7h 30m
2026-06-09 GTI8824 BWI → HHN Jun 9, 19:50 UTCJun 9, 22:05 UTC2h 15m
2026-06-04 GTI9271 MIA → ANC Jun 4, 03:45 UTCJun 4, 11:30 UTC7h 45m
2026-06-03 GTI8102 DFW → ORD Jun 3, 18:45 UTCJun 4, 00:35 UTC5h 50m
2026-06-03 GTI8102 DFW → ORD Jun 3, 10:25 UTCJun 3, 16:15 UTC5h 50m
2026-06-02 GTI8102 DFW → ORD Jun 2, 16:35 UTCJun 3, 08:00 UTC15h 25m
2026-06-01 GTI811 LAX → ICN Jun 1, 16:40 UTCJun 2, 06:20 UTC13h 40m
2026-06-01 GTI812 PVG → ANC Jun 1, 08:10 UTCJun 1, 13:45 UTC5h 35m
2026-05-31 GTI812 PVG → ANC May 31, 16:25 UTCJun 1, 06:20 UTC13h 55m
2026-05-30 GTI9974 MIA → LAX May 30, 16:55 UTCMay 31, 00:25 UTC7h 30m
2026-05-30 GTI8740 HKG → ANC May 30, 04:10 UTCMay 30, 13:20 UTC9h 10m
2026-05-29 GTI9974 MIA → LAX May 29, 20:35 UTCMay 29, 23:15 UTC2h 40m
2026-05-28 GTI8091 FRA → ORD May 28, 10:00 UTCMay 28, 18:20 UTC8h 20m
2026-05-27 GTI8092 ORD → FRA May 27, 22:15 UTCMay 28, 06:15 UTC8h 0m
2026-05-25 GTI8120 HOP → HHN May 25, 21:35 UTCMay 26, 02:49 UTC5h 15m
2026-05-25 GTI8120 HOP → HHN May 25, 11:05 UTCMay 25, 18:35 UTC7h 30m
2026-05-24 GTI8120 HOP → HHN May 24, 21:35 UTCMay 25, 18:35 UTC21h 0m
2026-05-24 GTI8120 HOP → HHN May 24, 21:20 UTCMay 25, 18:35 UTC21h 15m

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 N489MC page for operator, model, and routing details .

Mode-S A60B1E frequently asked

What is Mode-S code A60B1E?
A60B1E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N489MC.
Where is Mode-S A60B1E registered?
Mode-S code A60B1E 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 A60B1E broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A60B1E, octal 51405436, decimal 10,881,822.
What flights does A60B1E operate?
Mode-S A60B1E has broadcast 20 distinct callsigns, including GTI8560, GTI8998, GTI8825, GTI8102, GTI512.