Apparatus

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sensors Mode-S transponder

76CEF4

ICAO 24-bit transponder address · allocated to Singapore

Currently assigned to 9V-SWT · BOEING 777-300ER

Hex
76CEF4
Octal
35547364
Decimal
7,786,228
Country
SG
Tail
9V-SWT
Type
B77W
Broadcasting now · callsign SIA632 · 35,000 ft
Flights observed
140
Distinct callsigns
20
Country
SG
Last broadcast
3h ago

Current position

76CEF4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 76CEF4 falls within the block assigned to Singapore (SG) by ICAO Annex 10, Volume III. Every aircraft registered in Singapore 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
SIA346 - 14 2026-07-12
SIA636 Singapore Airlines 9 2026-05-27
SIA321 Singapore Airlines 9 2026-04-29
SIA318 Singapore Airlines 9 2026-04-29
SIA286 Singapore Airlines 9 2026-05-25
SIA227 Singapore Airlines 9 2026-05-26
SIA345 - 8 2026-07-13
SIA964 - 7 2026-07-10
SIA950 - 7 2026-07-09
SIA631 Singapore Airlines 7 2026-05-28
SIA285 Singapore Airlines 7 2026-05-24
SIA238 Singapore Airlines 7 2026-05-16
SIA953 - 5 2026-07-10
SIA965 Singapore Airlines 4 2026-07-10
SIA831 - 4 2026-07-12
SIA11 Singapore Airlines 4 2026-04-13
SIA802 Singapore Airlines 3 2026-04-17
SIA807 Singapore Airlines 2 2026-04-17
SIA336 - 2 2026-07-10
SIA26 Singapore Airlines 2 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SIA632 - Jul 13, 23:55 UTCJul 14, 00:05 UTC10m
2026-07-13 SIA345 - Jul 13, 10:05 UTCJul 13, 21:45 UTC11h 40m
2026-07-12 SIA346 - Jul 12, 17:45 UTCJul 13, 06:01 UTC12h 15m
2026-07-12 SIA831 - Jul 12, 15:10 UTCJul 12, 15:30 UTC20m
2026-07-12 SIA831 - Jul 12, 03:50 UTCJul 12, 12:15 UTC8h 25m
2026-07-11 SIA335 - Jul 11, 09:25 UTCJul 11, 21:10 UTC11h 45m
2026-07-10 SIA336 - Jul 10, 20:55 UTCJul 11, 05:40 UTC8h 45m
2026-07-10 SIA336 - Jul 10, 16:40 UTCJul 10, 20:10 UTC3h 30m
2026-07-10 SIA965 CGK → SIN Jul 10, 12:45 UTCJul 10, 14:00 UTC1h 15m
2026-07-10 SIA964 - Jul 10, 10:55 UTCJul 10, 11:15 UTC20m
2026-07-10 SIA964 - Jul 10, 09:50 UTCJul 10, 10:20 UTC30m
2026-07-10 SIA953 - Jul 10, 01:30 UTCJul 10, 02:45 UTC1h 15m
2026-07-09 SIA950 - Jul 9, 22:50 UTCJul 10, 00:05 UTC1h 15m
2026-07-09 SIA965 CGK → SIN Jul 9, 12:45 UTCJul 9, 14:00 UTC1h 15m
2026-07-09 SIA964 - Jul 9, 10:55 UTCJul 9, 11:10 UTC15m
2026-07-09 SIA964 - Jul 9, 09:45 UTCJul 9, 10:15 UTC30m
2026-07-09 SIA953 - Jul 9, 01:35 UTCJul 9, 02:50 UTC1h 15m
2026-07-08 SIA950 - Jul 8, 22:40 UTCJul 8, 23:55 UTC1h 15m
2026-07-08 SIA805 - Jul 8, 01:10 UTCJul 8, 06:35 UTC5h 25m
2026-07-07 SIA800 SIN → PEK Jul 7, 17:40 UTCJul 7, 20:55 UTC3h 15m
2026-07-07 - - Jul 7, 05:05 UTCJul 7, 05:20 UTC15m
2026-05-28 SIA965 CGK → SIN May 28, 12:40 UTCMay 28, 14:00 UTC1h 20m
2026-05-28 SIA964 SIN → CGK May 28, 10:35 UTCMay 28, 10:50 UTC15m
2026-05-28 SIA964 SIN → CGK May 28, 09:30 UTCMay 28, 10:00 UTC30m
2026-05-28 SIA631 HND → SIN May 28, 00:10 UTCMay 28, 03:30 UTC3h 20m
2026-05-27 SIA636 SIN → HND May 27, 17:45 UTCMay 27, 21:20 UTC3h 35m
2026-05-27 SIA636 SIN → HND May 27, 15:00 UTCMay 27, 15:10 UTC10m
2026-05-26 SIA227 SIN → MEL May 26, 14:35 UTCMay 26, 21:34 UTC7h 0m
2026-05-26 SIA631 HND → SIN May 26, 00:14 UTCMay 26, 06:29 UTC6h 15m
2026-05-25 SIA636 SIN → HND May 25, 18:00 UTCMay 25, 21:24 UTC3h 25m
2026-05-25 SIA286 AKL → SIN May 25, 12:10 UTCMay 25, 12:20 UTC10m
2026-05-25 SIA286 AKL → SIN May 25, 02:40 UTCMay 25, 05:40 UTC3h 0m
2026-05-24 SIA285 SIN → AKL May 24, 21:05 UTCMay 24, 23:46 UTC2h 41m
2026-05-24 SIA286 AKL → SIN May 24, 12:10 UTCMay 24, 12:25 UTC15m
2026-05-24 SIA286 AKL → SIN May 24, 02:30 UTCMay 24, 05:25 UTC2h 55m
2026-05-23 SIA285 SIN → AKL May 23, 21:10 UTCMay 24, 00:10 UTC3h 0m
2026-05-23 SIA631 HND → SIN May 23, 00:15 UTCMay 23, 06:55 UTC6h 39m
2026-05-22 SIA636 SIN → HND May 22, 17:45 UTCMay 22, 21:15 UTC3h 30m
2026-05-22 SIA286 AKL → SIN May 22, 02:20 UTCMay 22, 08:30 UTC6h 10m
2026-05-21 SIA285 SIN → AKL May 21, 21:10 UTCMay 22, 00:15 UTC3h 5m
2026-05-20 SIA212 SYD → SIN May 20, 21:40 UTCMay 20, 22:10 UTC30m
2026-05-20 SIA211 SIN → SYD May 20, 02:05 UTCMay 20, 09:00 UTC6h 56m
2026-05-19 SIA286 AKL → SIN May 19, 12:40 UTCMay 19, 12:50 UTC10m
2026-05-19 SIA286 AKL → SIN May 19, 02:30 UTCMay 19, 05:35 UTC3h 5m
2026-05-18 SIA285 SIN → AKL May 18, 21:05 UTCMay 18, 23:55 UTC2h 50m
2026-05-18 SIA631 HND → SIN May 18, 00:15 UTCMay 18, 03:30 UTC3h 15m
2026-05-17 SIA636 SIN → HND May 17, 17:01 UTCMay 17, 21:45 UTC4h 45m
2026-05-17 SIA636 SIN → HND May 17, 15:25 UTCMay 17, 15:35 UTC10m
2026-05-16 SIA238 MEL → SIN May 16, 23:35 UTCMay 17, 00:50 UTC1h 15m
2026-05-16 SIA227 SIN → MEL May 16, 14:31 UTCMay 16, 21:05 UTC6h 35m

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 9V-SWT page for operator, model, and routing details .

Mode-S 76CEF4 frequently asked

What is Mode-S code 76CEF4?
76CEF4 is an ICAO 24-bit transponder address. Allocated to Singapore. Assigned to 9V-SWT.
Where is Mode-S 76CEF4 registered?
Mode-S code 76CEF4 is allocated to Singapore (SG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 76CEF4 broadcasting right now?
Yes. Mode-S 76CEF4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 76CEF4, octal 35547364, decimal 7,786,228.
What flights does 76CEF4 operate?
Mode-S 76CEF4 has broadcast 20 distinct callsigns, including SIA346, SIA636, SIA321, SIA318, SIA286.