BE35 pilot reported not checking gear down position resulting in a gear up landing.

Attributes
ACN	1651157
Time
Date	201905
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Direct Visual Approach
Flight Plan	None
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 36 Flight Crew Total 556 Flight Crew Type 210
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Gear Up Landing

Narrative:

I was approaching to land at my home airport; in my personal aircraft. ZZZ is a private grass airstrip. I was flying by myself. While downwind to runway xx; I lowered the landing gear. I then lowered the flaps. On final approach; I do not remember checking the green gear down light. I realized the gear was not down when the plane slid to a stop on the undercarriage. A contributing factor was that the gear warning horn was not implemented in the audio panel due to the age of the aircraft. Since I was wearing noise canceling headsets; I was not able to hear the gear warning horn. I had also been training with an instructor (co-pilot) and became complacent with him helping with gear and other safety checks. Should I own or fly a complex aircraft in the future; I will make sure the gear warning horn is implemented in the audio panel or not wear noise canceling headsets. I will also confirm (reconfirm) on final approach that the gear down light(s) is illuminated.

Original NASA ASRS Text

Title: BE35 pilot reported not checking gear down position resulting in a gear up landing.

Narrative: I was approaching to land at my home airport; in my personal aircraft. ZZZ is a private grass airstrip. I was flying by myself. While downwind to runway XX; I lowered the landing gear. I then lowered the flaps. On final approach; I do not remember checking the green gear down light. I realized the gear was not down when the plane slid to a stop on the undercarriage. A contributing factor was that the gear warning horn was not implemented in the audio panel due to the age of the aircraft. Since I was wearing noise canceling headsets; I was not able to hear the gear warning horn. I had also been training with an instructor (co-pilot) and became complacent with him helping with gear and other safety checks. Should I own or fly a complex aircraft in the future; I will make sure the gear warning horn is implemented in the audio panel or NOT wear noise canceling headsets. I will also confirm (reconfirm) on final approach that the gear down light(s) is illuminated.

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.