A bonanza pilot reported that he entered class bravo airspace after he discovered that oil was obscu...

Narrative:

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.

Original NASA ASRS Text

Title: 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.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1505911
Time
Date	201712
Local Time Of Day	1201-1800
Place
Locale Reference	HND.Airport
State Reference	NV
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	None
Component
Aircraft Component	Oil Distribution
Person 1
Function	Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 2 Flight Crew Total 445 Flight Crew Type 51
Events
Anomaly	Aircraft Equipment Problem Critical Airspace Violation All Types Deviation - Procedural Published Material / Policy

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.