CHI85LA247

NTSB accident investigation · Let L-13 · Gregory, MI · June 23, 1985

Accident · No injuriesLimited investigationFinal report
Date
June 23, 1985, 12:51 local (16:51 UTC)
Place
Gregory, MI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N14420Let L-13
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850623029449A
Case key
13107

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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.

Airframe/component/system failure/malfunctionClimb - to cruise
Spoiler extension - inadvertentPilot in commandCause
QualificationPilot in commandFactor
Spoiler retraction - not performedPilot in commandCause
Lack of experiencePilot in commandFactor
Lack of familiarity with aircraftPilot in commandFactor
Forced landingDescent - emergency
In flight collision with terrain/waterLanding - flare/touchdown
In-flight planning/decision - misjudgedPilot in commandFactor
QualificationPilot in commandFactor
Proper touchdown point - misjudgedPilot in commandCause
Lack of experiencePilot in commandFactor
Lack of familiarity with aircraftPilot in commandFactor

Analysis

The glider landed in trees after the spoiler 'popped' open in flt during a towed takeoff. The tow plane released the glider at 300 ft AGL after the spoilers opened. The plt landed without retracting the spoilers. Two FAA inspectors stated that they checked the spoilers operation and they operated normally.

Aircraft

Registration
N14420
Reported as
Let L-13
Category
Glider
Serial number
175114
Airframe hours
1,533
Engine
None NONE, unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Sandhill Soaring Club Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 6, 1985 · 0 hours before
Airport
69G · Richmond

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
22
Certificate
Private
Medical
Unknown
Seat
Center
Flight hours
23 total · 2 in this make and model · 16 as pilot in command · 4 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 18 knots, gusting 25
Visibility
30 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 55 °F
Altimeter
29.00 inHg
Observed at
ARB, 23 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.

Other investigations on N14420 · 2

Matched to the same aircraft by N-number and date.