Heartbreaking stories emerge from EgyptAir Flight 804

French retired engineer Pierre Heslouin and his son, Quentin, learned to cope with the death last year of Edith — the father's wife and son's mother — by traveling together when they could.

The father-and-son companionship may have cost them their lives Thursday when the EgyptAir flight they were on from Paris to Cairo disappeared over the Mediterranean with both Heslouins aboard along with 64 others.

Heslouin, 75, and the father of five, was from Nogent-sur-Marne, east of Paris, and Quentin, 41, lived and worked in London, according to the La Parisien newspaper.

Details continued to emerge Friday about the 66 people aboard the aircraft as Egyptian planes and naval vessels found pieces of wreckage. Relatives and families in Egypt and France, where most of the 56 passengers were from, continued to wait anxiously for word of what happened to the flight that suddenly disappeared from radar screens during pre-dawn hours.

EgyptAir officials said there were 30 Egyptians and 15 French citizens on the aircraft, along with two Iraqis and one person from each of nine countries: Sudan, Chad, Portugal, Algeria, Canada, Great Britain, Belgium, Kuwait and Saudi Arabia. The Canadian government said two of its citizens were aboard. Among the passengers were two infants and a child. The plane had a crew of 10.

A citizen of Chad who was a passenger on Flight 804, Seitchi Mahamat, was a second-year cadet at the elite engineering and military academy, Saint-Cyr Coetquidan, on the outskirts of Paris, according to the Wall Street Journal. He was on his way home to mourn the death of his mother.

The Toronto Star reported that a Canadian mother of three working and living in Cairo, Marwa Hamdy, was on the plane.

CNN, quoting an official close to the investigation and a security source, identified the pilot of the aircraft as Mohamed Said Shoukair, who had more than 6,200 hours of flying experience. Shoukair had been a pilot with EgyptAir since 2004 and lived in Cairo, according to his Facebook page. CNN identified the first officer as Mohamed Mamdouh Ahmed Assem and the head flight attendant as Mirvat Zaharia Zaki Mohamed.

Others who have been reported on the flight include:

— Egyptian-born Ahmed Helal, a married father of two and manager of Proctor & Gamble's Amiens France manufacturing plant, where such products as Mr. Clean, Febreze and Dash were shipped throughout Europe.

— Welshman Richard Osman, 40, a mining company executive who was the father of two, according to the BBC.

— Abdelrahman El Suhail, identified by the Wall Street Journal as an economics professor from Kuwait, who had just left his two disabled children in Paris for medical treatment and was heading to a conference in Cairo.

— Hisham el-Maqawad, a sister-in-law of the deputy to the Egyptian ambassador in Paris.

— Sahar al-Khawaga, a Saudi woman who worked at the Saudi Embassy in Cairo, according to ABC News.

— Joao David e Silva, 62, the father of four, who specialized in emerging markets and worked for the Portuguese construction company, Mota-Engil, according to CNN.

Contributing: Jennifer Collins