If you were hoping that eventually the law would be changed so that you could use your iPhone to make calls during flight, you may be disappointed.

Apparently pilots have expressed concerns about Apple's smartphone being used inflight.

A report on Bloomberg states that in 2011 a regional airliner found its compasses going haywire, resulting in the flight going "several miles off course" and the culprit was a iPhone in row 9.

"The timing of the cellphone being turned off coincided with the moment where our heading problem was solved," said the co-pilot.

The problem is that devices, such as the iPhone, can broadcast radio waves powerful enough to interfere with airline equipment. However, there is an Airplane Mode that can be set on an iPhone or iPad. This should stop any interference caused by the device's antennas.

The Bloomberg report notes that airlines including Delta and Alaska already allow their pilots to carry iPads. This was part of a strategy to cut back on the paper charts and manuals they were previously required to carry.

We have previously reported that Australian airline Qantas has implemented iPads as in-flight entertainment units.

However, these iPads are not cellular versions and are therefore safer for use in flight.

Earlier this year research found that Apple's iPad and iPhone are more popular than Android smartphones and tablets for in-flight use and among businesses.

The FAA has been examining whether it should broaden the number of electronic goods cleared for use in planes. Most travellers are familiar with regulations that require them to turn off all electronics during a plane's taxi, take-off or landing and that forbid mobile phone use throughout an entire flight. The recommendations are due to be published in July.

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