MONTREAL, Aug 18 (Reuters) - An Air Canada (Toronto:AC.TO - News) flight carrying 269 passenger from Frankfurt to Toronto made a "precautionary landing" in Iceland on Monday after smoke poured into the passenger cabin. "The cause of the smoke is under investigation but it is believed to be from a malfunctioning recirculation fan," Air Canada spokeswoman Isabelle Arthur said. The crew of the Boeing (NYSE:BA - News) 747-400 cut power to the fan and all non-essential electrical equipment as soon as the problem was detected, Arthur said, adding that no passengers were hurt in the incident. Air Canada sent another plane to pick up the passengers stranded in Reykjavik. They are expected to arrive in Toronto early Tuesday morning. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.509 / Virus Database: 306 - Release Date: 12/08/2003