aviation accident: PIPER PA-36 near HASWELL (1989-07-17)
Probable cause: INADEQUATE VISUAL LOOKOUT BY THE PILOT (FAILED TO SEE & AVOID) WHICH RESULTED IN HIS FAILURE TO MAINTAIN CLEARANCE FROM THE OBSTRUCTION. CONTRIBUTING FACTORS WERE: THE UNMARKED GUY WIRE & THE PILOT'S LACK OF VISUAL CUES (VISUAL PERCEPTION).