[Date Prev][Date Next][Date Index]
Staff for Life Helicopter - Non-injury incident
DATE 1/23/03 PROGRAM Staff for Life Helicopter VENDOR RMH ADDRESS University of Missouri Hospital One Hospital Drive Columbia, MO WEATHER Clear, Cold, 2F AIRCRAFT_TYPE BK 117 B1 TAIL# N10UM TEAM Pilot, Mechanic. No injuries reported. No patient. DESCRIPTION On the previous night, a/c experienced extreme roll oscillations and a #1 hydraulic failure.Aircraft made a safe landing at the airport. After bleeding the system the next morning and cleaning the roll actuator, an operational check flight was performed. It should be noted that the OAT was 2 and the a/c was in a heated hangar all night. Start and run-up were normal. The crew lifted and headed west of the airfield to the test flight area. Approximately 15 min. into flight, the roll oscillations began, mild at first, becoming stronger. Roll C-SAS was disengaged but oscillations continued. Temp at altitude was -15F. The SPAS was disengaged but had no effect so the SPAS was re-engaged. As the crew started to return to the airfield, the shart rt. roll inputs to the cyclic continued. Soon the HYD#@ light came on and an emergency procedure was executed with a safe landing at the airfield. Both Hyd pressures were normal. The crew reset the system to #1 and re-engaged the C-SAS. No leaks were noted in the Hyd compartment. The pilot brought the a/c to a hover and vigorously checked all flight controls. Nothing abnomal was noted. The crew decided to fly the pattern with the roll eisengaged. On down wind, the shart rt. roll oscillations began again followed by #1 Hyd failure. Emergency procedure was executed, Yaw C-SAS disengaged. The cyclic was getting heavy (left turns). Turning final the cyclic continued to get stiffer. At approximately 5', the cyclic could no longer be moved left. A short run on landing was performed with normal shutdown. ADDITIONAL INFO Also noteworthy is the cyclic could be freely moved fore, aft and right. Only the left quadrant was affected. All other controls performed normally. The Hyd pack was replaced and sent to Eurocopter for testing. Results of test are not known at this time. SOURCE Jim Saylor, Safety Coordinator VIA Roseanne Krantz, CONCERN =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The CONCERN network shares verified information to alert medical transport programs when an accident / incident has occurred. Please share the above information with your program staff. If you have further questions, please contact the CONCERN Coordinator, Roseann Krantz @ 1-800-75-SHOCK or email@example.com.