Bad weather has caused the airplane ‘Solar Impulse 2’ to postpone its seventh leg of round-the-world journey. During this lap it has to cover the Pacific Ocean, Efe news agency reported. 

The current weather condition in the region is unstable, causing formation of excessive clouds. The collection of clouds could affect the recharging of batteries that supply power to the engine. The Impluse team said, due to the current situation team has to postpone the take-off, though the date to resume the flight is yet to be determined. 

The organisers said that the trip was expected to last for five days and five nights, which could exceed up to a week due to bad weather. The entire trip can place the pilot in excessively extreme circumstances, organisers added.

After more than a month in Nanjing in eastern China, the team announced on Monday that the airplane would take off for the Hawaiian islands at 7 p.m. GMT, but aborted the plan at the last moment.

On April 21, Solar Impulse reached Nanjing from Chongqing in central China.

Climatic conditions are a constant challenge on the journey, coupled on this leg with the great distance, 4,971 miles, that the airplane must fly.

The Impulse has flown a total of 3,728.2 miles in six stages since it began its trip from Abu Dhabi on March 9.

Organisers plan for the airplane and its more than 17,000 solar cells to fly around the world in 12 stages.

So far it has made stopovers at Muscat (Oman), Ahmedabad, Varanasi (India), Mandalay (Myanmar), Chongqing and Nanjing (China).

Swiss pilots Bertrand Piccard and Andre Borscheberg have taken turns on different stages of the journey.