B757 Undifferentiated or Other Model
Flight Crew Total 16250
Aircraft Equipment Problem Less Severe
Flight Crew Diverted
Aircraft; Human Factors
After take off; climbing above 10;000 FT continuing almost to cruise altitude; noticed unusual high frequency vibration in airframe. Aircraft required 3 units of right rudder trim in cruise to level the wings; with fuel and power equal on both sides. ''Spoilers' EICAS message [was] displayed later. Followed QRH; looked in FM; MEL; FRM; and cockpit checklist. [We] could not find an abnormal landing distance chart for this abnormal. Cockpit indications do not indicate which individual; or spoiler pair(s); or if any ground or flight spoilers will; work after landing. Due to less than 7;000 FT available on longest runway destination airport; only ILS being inoperative; possibility of a wet runway after sunset; but mainly no landing distance information for this abnormal available to us; we diverted to a longer runway to assure a safe landing roll distance.
B757 Captain experiences a high frequency vibration during climb and initial cruise requiring three units of right rudder trim to level the wings. Later a 'Spoilers' EICAS message displayed. The crew and Dispatch are unable to locate landing performance data for this anonaly and the crew elects to divert to a longer runway.