In yet another blow to the MileagePlus program, United and Singapore Airlines have "agreed" to remove Singapore Airlines inventory from the award search results on United.com as well as the United Mobile App, effective December 13, 2013. United has done a great job adding partners to its online award search function in recent years, and this is the first time I've actually witnessed the removal of an airline's inventory.
But I suppose come February 1, 2014, when the devalued United award charts are implemented, there will be relatively few people redeeming for premium class partner awards anyways, so perhaps this is all a moot point. However, for those of us who still redeem miles for economy seats on Singapore Airlines, this will make things a bit harder. Searches and bookings will now need to be made over the phone with an agent, incompetency notwithstanding, and phone booking fees will not be waived. Of course, you can still search for Singapore Airlines award availability online at ANA's website... for now.