CNA Explains: Could using your mobile phone on a plane affect flight equipment?

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Signals emitted from mobile phones are too weak to have a substantial impact on flight equipment, aviation experts say. So why do airlines tell you to switch off your phone or put it on airplane mode?

moments before the crash, and netizens speculated that the use of the phone could have interfered with flight equipment.

Passengers are also not seated near where aircraft systems are in the flight deck or cockpit, so any use of mobile phones is unlikely to cause interference, he added. Dr Venkatarayalu likened the interference to hearing static while listening to a radio that is not properly tuned to the station.Nepal plane crash: Domestic flights remain 'most efficient' mode of transport, despite risksAccording to Mr Daniel, switching the mobile phone off or putting it on airplane mode reduces the high-intensity radiated field, especially during the critical phases of take-off and landing that require aircraft instrument sensitivity.

At high altitudes, where a phone is unable to connect, the only consequence is that this would drain its battery faster, said Dr Venkatarayalu.Take-offs and landings are the most eventful and critical phases of the flight, when pilots rely heavily on navigational and communication equipment, said Mr Daniel.Should you switch off your phone instead of leaving it on airplane mode?

Even when using a phone with the Wi-Fi on, the signals emitted are still too weak to cause major impact to the functionality and operations of airplane equipment, added the associate professor. The Civil Aviation Authority of Singapore allows the use of mobile phones under specific requirements and in accordance with airline policies.

 

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