Seaplane or Amphibian
Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Commercial
Flight Crew Last 90 Days 6; Flight Crew Total 2108; Flight Crew Type 600
Situational Awareness; Distraction
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Ground Strike - Aircraft
Air Traffic Control Issued New Clearance; Aircraft Aircraft Damaged; General Maintenance Action
Aircraft; Human Factors
This was an incident because the only damage to the aircraft was a scrapped keel. Lake Amphibian LA4-200. On approach to landing the gear and flaps were lowered; on flaring for landing the tower said go around but it was too late and the aircraft hit the runway and scrapped the keel doing no other damage to the aircraft. The nose wheel had deployed normally and was down and locked. The main wheels remained up. We jacked the plane up; lowered the gear and towed the plane in.During the flight I noticed the position lights were out on the gear and I thought I need to get this checked out. That should have been a warming to me. Also I should have checked hydraulic pressure before and after lowering the gear. After landing I noticed hydraulic pressure had dropped to zero and didn't come back up until I recycled the hydraulic switch. I should have visually checked the gear position by looking back under the wings which I normally do and check the nose wheel with the mounted mirror. I was rushed by setting up a tight base leg and final approach and didn't do it. Needless to say I'll be much more thorough on my pre-landing phase of flight.
LA4-200 pilot reported a gear up landing when the main gear failed to extend during approach.