CHAMPION 7KCAB near Rialto, CA — 2010-11-27

Probable cause

Fatigue cracking of the left main landing gear leg, which resulted in a gear collapse during landing.

NTSB narrative

The certified flight instructor stated that he and the pilot receiving instruction were practicing landings in the tailwheel-equipped airplane. He said that during a wheel landing, with the pilot receiving instruction manipulating the flight controls, the airplane's left main landing gear collapsed, and the airplane skidded to the left and contacted a taxiway sign. The instructor reported that the wind was calm at the time of the accident. Postaccident metallurgical examination revealed that the left landing gear fractured at its inboard end due to fatigue cracking and corrosion damage.

Analysis

Primary failure mode

Mechanical failure

NTSB coding

• Landing gear collapse · Landing

Evidence available

• Photos
• 5 docket documents

Docket documents5

• Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1form
• Release of Aircraft Wreckage, NTSB Form 6120.15form
• Materials Laboratory Correspondenceother
• Image 1. View of aircraft at final resting place.photos
• Materials Laboratory 15 - Factual Report of Group Chairman (10 Embedded Photos)photos

Related mishaps

• WACO ASO

  2026-07-24 · Hamilton, OH

• BEECH F33A

  2026-04-24 · Sanford, NC

• PIPER PA46

  2026-04-05 · Burke, TX

• CESSNA A185F

  2026-03-28 · Skwentna, AK

• CESSNA 150L

  2026-01-28 · Gantt, SC

• PIPER PA24

  2026-01-08 · Bay City, MI