Transferring fuel from centre tank on 777
Seems like a good idea if you have a leak...how did they do it.
"C-FNNU, a Boeing 777-333ER aircraft operated by Air Canada, was conducting flight ACA890 from Toronto/Lester B. Pearson Intl, ON (CYYZ) to Rome/Leonardo da Vinci Intl, Italy (LIRF). During cruise flight in the vicinity of Prince Edward Island, the flight crew noticed that the fuel quantity in the centre tank was decreasing. The remaining fuel in the centre tank was transferred into the wings and the flight crew elected to return to CYYZ to have the aircraft inspected. The aircraft landed at CYYZ without further incident. The operator’s maintenance inspection determined that the left centre fuel discharge check valve was faulty, and replaced the unit in accordance with the manufacturer’s instructions."