Pilot Debrief

Glasflugel Standard Libelle near Faribault, MN — 2009-07-26

Final reportCEN09CA475
Sign in to save
Date
2009-07-26
Location
Faribault, MN, USA
Airport
FBL
Aircraft
Glasflugel Standard Libelle
Registration
N3872
Category
Glider
Highest injury
Minor
Fatalities
0
Phase of flight
Approach

Probable cause

The pilot's inability to maintain proper airspeed on approach to land.

NTSB narrative

The pilot reported no anomalies with the glider's flight controls during the preflight inspections that preceded two flights on the day of the accident. The first flight was 40 minutes in duration and no anomalies were noted with the glider. The second flight, which was the accident flight, was about 2 1/2 hours in duration. When the pilot completed a before-landing check of the dive brakes, the closure of the dive brakes was normal. During the downwind leg of the approach, the dive brakes were extended and locked in place. The pilot stated that during the dive brake extension, they "seemed difficult to open, as sometimes happens" in the accident glider. The pilot stated that the dive brakes could not be retracted during the approach and that she had to fly a closer traffic pattern to land on the runway, resulting in a steep approach. The right wing tip struck the ground and the glider experienced a hard landing on the grass landing area adjacent to Runway 30. Damage to the glider included a fuselage separation several feet forward of the empennage, resulting in substantial damage. Postaccident photos of the glider show the dive brakes retracted. The pilot received minor injuries. The pilot stated the dive brakes operated normally after the accident.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted the landing due to dive brake issues.

NTSB coding

Evidence available

  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

Related mishaps