- Date
- April 8, 1995, 17:00 local (22:00 UTC)
- Place
- Brownsboro, AL
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N48039Let Blanik L-13
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 21, 1995
- Report
- Approved by Office Director
- FAA report
- 19950408007409A
- Case key
- 3547
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The NTSB’s determination of the probable cause, and any contributing factors.
The student pilot's inadvertent use of spoilers during takeoff. Factors related to the accident were: the glider instructor's failure to identify the extended spoilers, and the proximity of trees in the emergency landing area.
Analysis
The glider instructor (CFI) reported that as the glider was being towed on the takeoff roll, the student pilot accidentally activated the spoilers. After lift-off, the tow plane could not gain sufficient altitude, while towing the glider in this configuration, so the tow pilot released the glider at an altitude of about 80 feet above ground level. The instructor pilot turned the glider to avoid trees and attempted to land in a clearing; however, the wing of the glider contacted the ground. The glider then rotated about 90 degrees and slid to a stop with substantial damage.
Factual narrative
On April 8, 1995, at 1700 central daylight time, a Blanik L-13 glider, N48039, collided with the ground while maneuvering for an emergency landing following an aborted takeoff near Brownsboro, Alabama. The training flight operated under provisions of 14 CFR Part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The glider sustained substantial damage; the flight instructor and student pilot were not injured. The flight departed Brownsboro at 1658 hours.
The flight instructor reported that during the takeoff roll, he was occupied assisting the student with the takeoff. He did not realize how much of the runway had been used during the takeoff roll until after the aircraft was in the air. He stated that the student was a large man, and that because of his size, his knee was located immediately under the spoiler handle. The student pilot failed to keep his hand on the spoiler handle to prevent accidental activation of the spoiler, and inadvertently deployed the spoiler with his left knee during takeoff roll as the glider was towed. Before the flight instructor could gain control of the glider, at an altitude of about 80 feet above ground level, the tow aircraft pilot released the glider. The flight instructor attempted to maneuver the glider for a landing, but the left wing collided with the ground.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Aircraft
- Registration
- N48039
- Reported as
- Let Blanik L-13 (BLANIK L-1)
- Category
- Glider
- Serial number
- 026102
- Airframe hours
- 2,600
- Engine
- unknown
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Theodore N. Mavrotheris
- Registered owner
- Huntsville Soaring Club
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 28, 1995 · 25 hours before
- Airport
- 3M5 · Moontown Airport, runway 27, 2,300 × 100 ft, grass/turf
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 52
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Rear
- Flight hours
- 1,210 total · 120 in this make and model · 686 as pilot in command · 16 in the last 90 days · 15 in the last 30 days · 6 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 11 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 79 °F, dew point 48 °F
- Altimeter
- 29.00 inHg
- Observed at
- HSV, 30 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.