Saturday, May 5, 2018

Grob G102 Club Astir IIIB, N102BK, owned by the Central Ohio Soaring Association Inc and operated by the pilot: Accident occurred August 05, 2017 at Marion Municipal Airport (KMNN), Ohio

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Columbus, Ohio

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf


Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms 
 
http://registry.faa.gov/N102BK



Aviation Accident Factual Report - National Transportation Safety Board

Location: Marion, OH
Accident Number: CEN17LA305
Date & Time: 08/05/2017, 1350 EDT
Registration: N102BK
Aircraft: BURKHART GROB FLUGZEUGBAU G102 CLUB ASTIR IIIB
Aircraft Damage: Substantial
Defining Event: Glider tow event
Injuries: 1 Serious
Flight Conducted Under: Part 91: General Aviation - Personal 

On August 5, 2017, about 1350 eastern daylight time, a Burkhart Grob Flugzeugbau G-102 Club Astir IIIB glider, N102BK, collided with a tree and terrain after releasing from the tow airplane at the Marion Municipal Airport (MNN), Marion, Ohio. The pilot received serious injuries, and the glider sustained substantial damage. The glider was owned by the Central Ohio Soaring Association, Inc., and operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions existed near the accident site at the time of the flight, and a flight plan had not been filed. The flight was departing MNN on a local flight.

The pilot stated that he made a mistake during his before takeoff checks and forgot to latch the canopy. He stated that after climbing a "few hundred feet" the canopy came open. While he was trying to close the canopy, he lost sight of the Cessna 150 tow airplane, so he released the tow line and made a turn to the right. He attempted to land in a bean field, but the glider struck a tree and impacted the field.

A witness who observed the glider during the accident flight reported that the glider's left and right-wing spoilers were extended during the flight and were visible from the ground. He stated that the glider and tow airplane were unable to climb normally with the spoilers extended. He reported that the glider released from the tow airplane around 150 to 200 feet above ground level (agl) and tried to make a 180-degree turn back to the runway with the spoilers still extended. The glider's wing clipped a tree and crashed in a bean field.

The tow airplane pilot reported that shortly after takeoff, he felt the tow airplane being "jerked around" by the glider. He saw the glider in a high nose-up position, and then the tow line released about 150 feet agl. The tow airplane continued climbing straight ahead and then returned to MNN and landed. The tow pilot inspected the tow line after landing. The towline and tow ring were undamaged and attached to the tow airplane.

The Federal Aviation Administration (FAA) inspector reported that the examination of the glider at the accident site revealed that the spoilers were found in the open or deployed position. Maple leaves were found in the bottom of the spoiler wells. The right wing exhibited impact damage about mid-span. The flight controls were damaged consistent with impact forces. The canopy attachment pins and the surrounding composite material were torn from the fuselage at impact. The canopy attachment handle and bayonet pins showed proper operation. The damage to the canopy was consistent with it being in the latched position at impact.

In an interview with a FAA inspector, the pilot stated that he heard air noise in the cabin during takeoff and thought his canopy had become unlatched. He attempted to check the canopy handle during takeoff and climb out while still under tow.

In his report to the National Transportation Safety Board, the pilot stated, "We should not have let the need for a rapid departure overlook the need to make sure that the checklists are completed. And most important, fly the airplane." The pilot indicated that the glider had no mechanical malfunctions or failures.

At 1353, the surface weather observation at MNN was wind from 280 degrees at 9 knots; visibility 10 miles; sky clear; temperature 24 degrees C; dew point 12 degrees C; and altimeter 30.06 inches of mercury. 


Pilot Information

Certificate: Airline Transport; Flight Engineer
Age: 77, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Single
Other Aircraft Rating(s): Glider
Restraint Used: 4-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Single-engine; Glider; Instrument Airplane
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 06/12/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 
Flight Time:  24000 hours (Total, all aircraft), 20 hours (Total, this make and model), 19000 hours (Pilot In Command, all aircraft), 6 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Manufacturer: BURKHART GROB FLUGZEUGBAU
Registration: N102BK
Model/Series: G102 CLUB ASTIR IIIB
Aircraft Category: Glider
Year of Manufacture: 1985
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 5622CB
Landing Gear Type: Ski/wheel
Seats: 1
Date/Type of Last Inspection: 02/17/2017, Annual
Certified Max Gross Wt.: 992 lbs
Time Since Last Inspection:
Engines: 0
Airframe Total Time:  1336.6 Hours as of last inspection
Engine Manufacturer:
ELT: Not installed
Engine Model/Series: 
Registered Owner: CENTRAL OHIO SOARING ASSOC INC
Rated Power:
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: MNN, 993 ft msl
Observation Time: 1353 EDT
Distance from Accident Site: 0 Nautical Miles
Direction from Accident Site: 0°
Lowest Cloud Condition: Clear
Temperature/Dew Point: 24°C / 12°C
Lowest Ceiling: None
Visibility: 10 Miles
Wind Speed/Gusts, Direction: 9 knots, 280°
Visibility (RVR):
Altimeter Setting: 30.06 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Precipitation
Departure Point: Marion, OH (MNN)
Type of Flight Plan Filed: None
Destination: Marion, OH (MNN)
Type of Clearance: None
Departure Time: 1413 EDT
Type of Airspace:

Airport Information

Airport: Marion Municipal (MNN)
Runway Surface Type: Asphalt
Airport Elevation: 993 ft
Runway Surface Condition: Dry
Runway Used: 31
IFR Approach: None
Runway Length/Width: 3498 ft / 100 ft
VFR Approach/Landing: Forced Landing

Wreckage and Impact Information

Crew Injuries: 1 Serious
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Serious
Latitude, Longitude: 40.626111, -83.109444


NTSB Identification: CEN17LA305
14 CFR Part 91: General Aviation
Accident occurred Saturday, August 05, 2017 in Marion, OH
Aircraft: BURKHART GROB FLUGZEUGBAU G102 CLUB ASTIR IIIB, registration: N102BK
Injuries: 1 Serious.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On August 5, 2017, about 1413 eastern daylight time, a Burkhart Grob Flugzeugbau G-102 Club Astir IIIB glider, N102BK, collided with a tree and terrain after releasing from the tow airplane at the Marion Municipal Airport (MNN), Marion, Ohio. The pilot received serious injuries, and the glider sustained substantial damage. The glider was owned by the Central Ohio Soaring Association, Inc., and operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions existed near the accident site at the time of the flight, and a flight plan had not been filed. The flight was departing MNN on a local flight. 

A witness who observed the glider during the accident flight reported that the glider's left and right-wing spoilers were visible from the ground, and that they were not locked down into the stowed position. He stated that the glider and tow airplane, a Cessna 150, were unable to climb normally with the spoilers extended. He reported that the pilot released from the tow airplane around 150 to 200 feet above the ground, and tried to make a 180-degree turn back to the runway with the spoilers still extended. The glider's wing clipped a tree and crashed in a bean field. 

At 1353, the surface weather observation at MNN was wind from 280 degrees at 9 knots; visibility 10 miles; sky clear; temperature 24 degrees C; dew point 12 degrees C; and altimeter 30.06 inches of mercury.

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