Path: utzoo!attcan!uunet!samsung!rex!ames!trident.arc.nasa.gov!yee From: yee@trident.arc.nasa.gov (Peter E. Yee) Newsgroups: sci.space.shuttle Subject: Shuttle Status for 08/13/90 (Forwarded) Message-ID: <56012@ames.arc.nasa.gov> Date: 13 Aug 90 20:03:03 GMT Sender: usenet@ames.arc.nasa.gov Reply-To: yee@trident.arc.nasa.gov (Peter E. Yee) Organization: NASA Ames Research Center, Moffett Field, CA Lines: 50 KSC SHUTTLE STATUS REPORT - MONDAY, AUGUST 13, 1990 11 A.M. STS-35 - COLUMBIA (OV 102) - PAD 39-A The Shuttle Interface Test, which began early Saturday morn- ing, will continue through tomorrow. Launch pad validations are also scheduled to continue through tomorrow. A leak test, with gaseous helium, of the external tank flange this weekend revealed some leakage, however, engineers have determined it is within specifications. Servicing of the Broad Band X-ray Telescope with argon was completed on Saturday. Gaseous oxygen flow control valves were installed in the vehicle's main propulsion system this weekend. Routine tests of the main propulsion system are continuing this week. Preparations are underway to conduct a helium signa- ture leak check of the three main engines on Thursday. The Flight Readiness Review, where shuttle managers set the official launch date, is scheduled for Aug. 20-21 here at Kennedy Space Center. STS-38 - ATLANTIS (OV 104) - VAB HIGH BAY 3 Operations to demate the shuttle Atlantis from the external tank began this weekend but were temporarily halted this morning when a valve in the VAB firex system failed causing water to drip onto power transformers. The power in VAB high bay 3 has been cut off to avoid electrical shorts. The water has been cleaned up. Officials are determining if that part of the firex system is necessary to continue with demate operations. There was no water on flight hardware. Atlantis will be towed to the OPF after demate where work to ready it for the STS-38 mission will commence including replacing seals in the 17-inch disconnect assembly and for repairs to tiles. STS-41 - DISCOVERY (OV 103) - OPF BAY 1 The freon cooling system was serviced this weekend and sam- pling and adjusting is planned in the next few days. The payload bay doors were closed for thermal protection system operations. Closeouts are underway on all areas of the vehicle. Pyrotechnic devices for the robot arm and the RTG system will be installed after the RTG system is serviced with water. The date of Aug. 18 for rolling the vehicle over to the VAB is being evaluated. The routine rollover review meeting will be held Friday.