Let's just put it together from two transcripts. The flights get backed up, I believe the word the media has used is "bottle-necked". Remember? When that happens, sometimes a plane has to be diverted, usually because it's running out of fuel. Is Doctors Without Borders frustrated? Sure. Is there a conspiracy against them? No.
Doctors Without Borders
On our side we have been trying through all our contacts, which is at the UN, or people in the United States, or here in Haiti--everywhere--we have tried all the possible channels for these planes to land. We have been given assurances that they could land, and they ended up (circling) over Port-au-Prince, and eventually diverted to Santo Domingo.
Avril: We have had 4 cargo flights that successfully have flown to Port-au-Prince, with a total tonnage of 135. We have 2 cargo flights that flew to Dominican Republic with their total tonnage being 65. At the moment we have 6 cargo flights planned for the rest of this week, with a total tonnage of 195.
14:50
http://doctorswithoutborders.org/publications/article.cfm?id=4169&cat=transcript&ref=related-sidebarJAN 17 PRESS BRIEFING BY DENIS McDONOUGH, DEPUTY NATIONAL SECURITY ADVISOR; TIM CALLAGHAN, SENIOR REGIONAL ADVISOR FOR LATIN AMERICA AND THE CARIBBEAN FOR USAID OFFICE OF FOREIGN DISASTER ASSISTANCE; COLONEL BUCK ELTON, COMMANDER SOCIETY SOUTH HAITI
The relief effort at the Haiti Airport is in full swing, with over 600 takeoffs and landings since Wednesday evening when US forces from Florida first landed. The loading equipment was damaged meaning cargo was mostly unloaded by hand in the beginning. There was no electricity and no communication when forces landed. Colonel Elton said that within 28 minutes, they had controlled the airspace and were "sequencing in the arriving aircraft that night". On Thursday, a response group from the Air Force brought in construction material and handling equipment.
"It gets better every day," said Colonel Elton, "Initially we went from an airfield that had no control or prioritization and it was everyone -- everyone was filing their flight plans and arriving unannounced, and we didn’t know that they were there until they were approximately 20 miles from the field."
"The overwhelming international support to bring humanitarian assistance and disaster relief into this airfield exceeded the capacity of us to get them in and out... The first couple days it was all very important cargo and it was a challenge to turn away any aircraft for an open parking slot. But when we had all of the parking spots occupied, more important cargo would show up. And if they didn’t have enough holding fuel to be able to orbit and wait to come in, they would have to fuel-divert."
One solution to avoid the fuel-diverts was to provide additional military aircraft with air refueling tanker support so that they could come and orbit over the field. When there was in available spot without an inbound civilian humanitarian relief flight on the way, they would bring them in and quickly offload and get them out.
According to Elton, though, the number of diverts have been minimal and are decreasing, there were on two diverts on Sunday. On Saturday, Elton said, "out of 67 civilian flights that we had to plan to come here, we had only had three diverts".
http://www.whitehouse.gov/the-press-office/press-briefing-conference-call-relief-efforts-haiti