Incident: Cathay B744 at San Francisco on Jan 23rd 2011, could not pressurize cabin
By Simon Hradecky, created Monday, Jan 24th 2011 07:49Z, last updated Monday, Jan 24th 2011 07:49ZA Cathay Pacific Boeing 747-400, registration B-HOV performing flight CX-873 from San Francisco,CA to Hong Kong (China), was climbing through 10000 feet when the crew requested to level off at 10000 reporting they could not pressurize the cabin and needed to work that out. The crew subsequently decided to return to San Francisco for a safe landing on runway 28R about 110 minutes after departure.
The airplane was repaired, departed again after about 3 hours on the ground and reached Hong Kong with a total delay of 7.5 hours following another intermediate stop at Osaka Kansai (Japan) for a crew change.
A passenger reported that following the decision to return to San Francisco because of the cabin pressure problem the airplane dumped fuel at 9000 feet before returning to San Francisco. Following repairs they departed again but needed to make another stop at Kansai Airport to change the crew.