The governors stated this in a statement by the Chairman of the Nigeria Governors Forum, Mr. Rotimi Amaechi, on Sunday.
The governors also described the death of the victims as unfortunate.
Apart from Yakowa and Azazi, their aides – Dauda Tsoho and Mohammed Kama respectively; the pilots – Murtala Daba and Adeyemi Sowole – also died in Saturday’s air mishap that occurred in Bayelsa State.
The statement said, “We hereby commiserate with the families of Governor Patrick Yakowa, General Andrew Azazi their aides, Dauda Tsoho and Mohammed Kama; and the pilots, Murtala Daba and Adeyemi Sowole, who died in Saturday’s ill-fated helicopter crash.
“We also condole with the people of Kaduna and Bayelsa states over this tragic incidence that has again thrown our country into mourning.
“It is unfortunate that these six distinguished and remarkable Nigerians passed on at a time our country needed their invaluable services most. Their exit is no doubt a monumental loss to our nation.
“We pray God to give the families of the departed, and indeed all Nigerians, the fortitude to bear this great loss. May the soul of these great sons of our country, Nigeria, rest in perfect peace.”
The governors said they were pleased that President Goodluck Jonathan had ordered that investigation be carried out to ascertain the cause of the crash.
“While we await the outcome of the investigation, our thoughts and prayers remain with the families, friends and associates of our departed patriots at this trying time.”
They urged the aviation authorities to work harder at making flying safer and easier in the country.
They also called on relevant authorities to periodically overhaul and maintain law enforcement facilities and equipment.