European Stars And Stripes (Newspaper) - November 19, 1987, Darmstadt, Hesse                                Thursday. November 19, 1987 the stars and stripes Page 3 Wing de icing inadequate survivors say Denver a three survivors of Continental airlines right 1713 said a de icing Crew made several passes on he Jet s left Wing hut Only one on the right prior to Takeoff. Instigators said As the death toll in sunday s trash Rose to 28, while ice on the wings was the main focus of inquiry questions about Pilot inexperience and possible slush on the runway also weft addressed tuesday by the National transportation safely Board said chairman Jim Burnett. Three survivors told Nosb investigators that a Staple Ion International air port Crew made several Dassos on the left Wing of the def with a chemical de icer but went Over the right Wing Only once Burnett said ,11 3 news conference. A fourth survivor. Patli Hal Ford 27, of Boise Idaho earlier said she thought there was More ice on the plane s wings just before Takeoff than before the reportedly inadequate de icing. Al the Denver Airport Continental planes Are do iced on a special pad thai has a nozzle capable of spraying an eth Lene glycol water mixture heated to 180 degrees. How Long a Lyell provides Protection depends on outside temperatures precipitation and other conditions. But experts say it should last at least 30 min utes under the worst of conditions. It was 28 degrees and snowing when flight 1713 attempted its Takeoff bound for Boise. Burnett said the doomed Jet liner took off More than 23 minutes after or icing. Part of the delay in taking off was attributed to a communications foul up Between the lower and the plane. Burnett said. Controllers in the Tower believed i1-dc-9  35-Lell. Plane War Testo right  Tell Wing strive ground Star Dps Ovton us top and Sukk Down  runway. Is. Left who.  Rotl from main flight path of the Continental dc-9 the aircraft was being de iced when it actually was awaiting Takeoff Burnett said. Federal investigators have said they Are looking into the possibility that ice on Ali plane s wings caused the Jet to Roll sharply Bacic and Forth just after liftoff before catching a wingtip flipping onto its Back and breaking into three pieces As it Slid Down the runway. The plane an Early version of the do 9 called the series 10. Was not equipped with slats on the front Edge of the wings which give it added lift during Takeoff. In the past the Nosb has reported on studies snowing that extremely Small accumulations of Frost Snow or ice on the wings of the series 10 can significantly increase stall Speed. Burnett would not comment on  whether the Lime Between de icing and Takeoff was too Jong saying that the investigation was incomplete. Ice can Dis tort the shape of an aircraft Wing and destroy its ability to lift an air plane. Of course additional time in that circumstance May not have been a Good  Burnett said in an interview tuesday on the lbs to s morning  500 mourners attend service Denver al1 tear