Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

76B457

ICAO 24-bit transponder address · allocated to Singapore

Hex
76B457
Octal
35532127
Decimal
7,779,415
Country
SG
No current signal · last broadcast 23d ago
Flights observed
162
Distinct callsigns
20
Country
SG
Last broadcast
23d ago

Last known position

Most recent position reported by Mode-S 76B457.

Country allocation

The ICAO 24-bit address 76B457 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
SIA442 Singapore Airlines 12 2026-07-23
SIA441 Singapore Airlines 12 2026-07-23
SIA534 - 9 2026-07-15
SIA535 - 8 2026-07-15
SIA762 Singapore Airlines 5 2026-07-26
SIA761 Singapore Airlines 5 2026-07-26
SIA136 - 5 2026-07-17
SIA991 - 4 2026-07-17
SIA990 - 4 2026-07-17
SIA900 Singapore Airlines 4 2026-07-25
SIA8890 Singapore Airlines 4 2026-05-27
SIA728 - 4 2026-07-08
SIA135 - 4 2026-07-17
SIA133 Singapore Airlines 4 2026-07-21
SIA116 Singapore Airlines 4 2026-07-21
SIA115 Singapore Airlines 4 2026-07-21
BOE224 - 4 2026-05-22
SIA509 - 3 2026-07-15
SIA508 - 3 2026-07-15
SIA251 Singapore Airlines 3 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SIA157 PNH → SIN Jul 26, 09:00 UTCJul 26, 13:40 UTC4h 40m
2026-07-26 SIA761 RGN → SIN Jul 26, 04:45 UTCJul 26, 07:30 UTC2h 46m
2026-07-26 SIA762 SIN → RGN Jul 26, 01:05 UTCJul 26, 03:40 UTC2h 35m
2026-07-25 - - Jul 25, 11:10 UTCJul 25, 11:20 UTC10m
2026-07-25 SIA900 SIN → CEB Jul 25, 04:40 UTCJul 25, 09:35 UTC4h 55m
2026-07-25 SIA900 SIN → CEB Jul 25, 03:15 UTCJul 25, 03:25 UTC10m
2026-07-24 SIA927 SUB → SIN Jul 24, 11:20 UTCJul 24, 11:30 UTC10m
2026-07-24 SIA107 KUL → SIN Jul 24, 03:35 UTCJul 24, 04:20 UTC45m
2026-07-24 SIA108 SIN → KUL Jul 24, 01:45 UTCJul 24, 02:25 UTC40m
2026-07-23 SIA441 KTM → SIN Jul 23, 17:30 UTCJul 23, 22:15 UTC4h 45m
2026-07-23 SIA442 SIN → KTM Jul 23, 11:20 UTCJul 23, 16:00 UTC4h 40m
2026-07-23 SIA113 KUL → SIN Jul 23, 06:50 UTCJul 23, 07:50 UTC1h 0m
2026-07-23 SIA114 SIN → KUL Jul 23, 04:45 UTCJul 23, 05:30 UTC45m
2026-07-23 SIA103 KUL → SIN Jul 23, 01:15 UTCJul 23, 02:05 UTC50m
2026-07-22 SIA104 SIN → KUL Jul 22, 23:15 UTCJul 22, 23:55 UTC40m
2026-07-22 SIA761 RGN → SIN Jul 22, 04:35 UTCJul 22, 13:25 UTC8h 50m
2026-07-22 SIA762 SIN → RGN Jul 22, 00:35 UTCJul 22, 03:20 UTC2h 45m
2026-07-21 SIA127 KUL → SIN Jul 21, 14:10 UTCJul 21, 14:55 UTC45m
2026-07-21 SIA128 SIN → KUL Jul 21, 12:20 UTCJul 21, 12:55 UTC35m
2026-07-21 SIA115 KUL → SIN Jul 21, 09:20 UTCJul 21, 10:10 UTC50m
2026-07-21 SIA116 SIN → KUL Jul 21, 07:10 UTCJul 21, 07:55 UTC45m
2026-07-21 SIA133 PEN → SIN Jul 21, 01:55 UTCJul 21, 05:20 UTC3h 25m
2026-07-20 SIA441 KTM → SIN Jul 20, 17:30 UTCJul 20, 21:40 UTC4h 10m
2026-07-20 SIA442 SIN → KTM Jul 20, 11:10 UTCJul 20, 15:35 UTC4h 25m
2026-07-20 SIA761 RGN → SIN Jul 20, 03:55 UTCJul 20, 06:35 UTC2h 40m
2026-07-20 SIA762 SIN → RGN Jul 20, 00:10 UTCJul 20, 02:45 UTC2h 35m
2026-07-19 SIA252 DRW → SIN Jul 19, 21:15 UTCJul 19, 21:25 UTC10m
2026-07-19 SIA251 SIN → DRW Jul 19, 15:45 UTCJul 19, 15:55 UTC10m
2026-07-19 SIA525 MAA → SIN Jul 19, 00:35 UTCJul 19, 09:55 UTC9h 20m
2026-07-18 SIA441 KTM → SIN Jul 18, 17:50 UTCJul 18, 22:30 UTC4h 40m
2026-07-18 SIA442 - Jul 18, 11:25 UTCJul 18, 15:50 UTC4h 25m
2026-07-18 SIA113 - Jul 18, 07:00 UTCJul 18, 07:50 UTC50m
2026-07-18 SIA114 - Jul 18, 04:35 UTCJul 18, 05:15 UTC40m
2026-07-18 SIA103 - Jul 18, 01:05 UTCJul 18, 01:39 UTC35m
2026-07-17 SIA104 SIN → KUL Jul 17, 23:14 UTCJul 17, 23:55 UTC40m
2026-07-17 SIA135 - Jul 17, 08:35 UTCJul 17, 09:55 UTC1h 20m
2026-07-17 SIA136 - Jul 17, 05:55 UTCJul 17, 07:14 UTC1h 20m
2026-07-17 SIA991 - Jul 17, 02:50 UTCJul 17, 03:45 UTC55m
2026-07-17 SIA990 - Jul 17, 00:14 UTCJul 17, 01:05 UTC50m
2026-07-16 SIA441 - Jul 16, 17:35 UTCJul 16, 22:19 UTC4h 45m
2026-07-16 SIA442 - Jul 16, 11:20 UTCJul 16, 15:49 UTC4h 30m
2026-07-16 SIA135 - Jul 16, 07:40 UTCJul 16, 08:55 UTC1h 15m
2026-07-16 SIA136 - Jul 16, 05:20 UTCJul 16, 06:15 UTC55m
2026-07-16 SIA991 - Jul 16, 02:30 UTCJul 16, 03:25 UTC55m
2026-07-16 SIA990 - Jul 16, 00:10 UTCJul 16, 00:55 UTC45m
2026-07-15 SIA535 - Jul 15, 21:20 UTCJul 15, 22:30 UTC1h 10m
2026-07-15 SIA534 - Jul 15, 16:25 UTCJul 15, 16:45 UTC20m
2026-07-15 SIA534 - Jul 15, 12:50 UTCJul 15, 13:40 UTC50m
2026-07-15 SIA509 - Jul 15, 06:40 UTCJul 15, 11:10 UTC4h 30m
2026-07-15 SIA508 - Jul 15, 01:05 UTCJul 15, 05:00 UTC3h 55m

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.

Mode-S 76B457 frequently asked

What is Mode-S code 76B457?
76B457 is an ICAO 24-bit transponder address. Allocated to Singapore.
Where is Mode-S 76B457 registered?
Mode-S code 76B457 is allocated to Singapore (SG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 76B457 broadcasting right now?
No active broadcast right now. Last signal was 23d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 76B457, octal 35532127, decimal 7,779,415.
What flights does 76B457 operate?
Mode-S 76B457 has broadcast 20 distinct callsigns, including SIA442, SIA441, SIA534, SIA535, SIA762.