CHI92LA143

NTSB accident investigation · Burkhart Grob G-103 · Ionia, MI · May 10, 1992

Accident · No injuriesLimited investigationFinal report
Date
May 10, 1992, 14:20 local (18:20 UTC)
Place
Ionia, MI
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N140BGBurkhart Grob G-103
Weather
Visual (VMC) · Day
Status
Completed · report July 26, 1993
Report
Approved by Office Director
FAA report
19920510013909A
Case key
15439

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

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Probable cause

The pilot-in-command's improper preflight and decision to close the glider's canopy at low altitude.

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.

Miscellaneous/otherTakeoff - initial climb
Window,canopy - not secured
Aircraft preflight - improperPilot in commandCause
In-flight planning/decision - improperPilot in commandCause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - rough/uneven

Analysis

The glider was in the initial climb phase from takeoff at an estimated altitude of 150-200' AGL when the canopy suddenly unlatched and struck the right wing. The canopy was still attached, and the pilot attempted to close it. The pilot reported he became disoriented in relation to the tow airplane while attempting to close the canopy, and elected to pull the tow release. Altitude was insufficient for a return to the runway, and an off-airport site was selected. The glider was substantially damaged during the landing in a rough field. A postaccident inspection of the glider disclosed no mechanical deficiencies with the canopy latching mechanism.

Aircraft

Registration
N140BG
Reported as
Burkhart Grob G-103
Category
Glider
Serial number
33902-K-140
Airframe hours
1,510
Engine
unknown
Damage
Substantial damage
Flight
Other work use · Part 91
Operator
Benz Aviation
Registered owner
Benz Aviation
Last inspection
100 hour · September 3, 1991 · 62 hours before

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
59
Certificate
Commercial
Medical
Unknown
Seat
Rear
Flight hours
410 total · 88 in this make and model · 402 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 57 °F
Altimeter
30.00 inHg
Observed at
LAN, 20 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 N140BG · 2

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