Bonanza 35
Flight Crew Private
Flight Crew Last 90 Days 2; Flight Crew Total 445; Flight Crew Type 51
Situational Awareness; Distraction; Communication Breakdown; Training / Qualification
Aircraft Equipment Problem Critical; Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Exited Penetrated Airspace; Flight Crew Overcame Equipment Problem; Flight Crew Landed in Emergency Condition
Aircraft; Human Factors
I was on flight following and talking to Las Vegas Approach control. During decent for final approach to KHND I noticed a small amount of fluid on the windscreen that I took to be condensation on the interior of the window. It was not. When the defroster had no effect I tried to wipe it off and realized it was on the outside of the glass. It was only a small spot and I could look around it so I continued descent. When I reduced power the spot grew larger and began to obstruct my forward view. I reduced decent rate to buy time to investigate the problem. By this time the windscreen was 70% obscured with oil. ATC informed me I had entered Bravo without being cleared and then cleared me for Bravo and asked me to expedite descend. I apologized and complied. I was able to see the airport though the side window and told ATC I had the airport in sight. They switched me to KHND tower who cleared me for straight in 35L.I was unable to see out most of the front window but I could see the blurry but bright runway lights through it. I was able to land the aircraft by looking out the side window for vertical guidance and tracking the runway left edge during touchdown.Though the entire event I could hear my instructor's voice in my head 'aviate; navigate and then communicate'. I managed to keep the plane right side up and find the airport. However; I did not communicate well enough with ATC.In hindsight I should have asked for help.
A Bonanza pilot reported that he entered Class Bravo Airspace after he discovered that oil was obscuring 70% of his windscreen. He landed successfully; but he laments not reporting his condition to ATC.