# NTSB IAD97LA118: Reynolds MARSKE-MONARCH 1997, N5377, Sutton, WV, September 6, 1997 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: September 6, 1997, 14:19 local (18:19 UTC) - Place: Sutton, WV - Coordinates: 38.65913, -80.710639 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.6591&lon=-80.7106&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report September 28, 1999 - Report: Approved by Office Director - NTSB case key (mKey): 28231 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD97LA118 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/28231/pdf - Page: https://openairdocs.org/ntsb/IAD97LA118 ## Probable cause The pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall/spin. A related factors was the pilot lack of familiarity with the airplane. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, maneuvering - airspeed - inadequate, pilot in command (cause) - lack of familiarity with aircraft, pilot in command (contributing factor) - stall/spin - inadvertent, pilot in command - In flight collision with terrain/water, descent - uncontrolled - terrain condition - runway ## Analysis The pilot reported that the glider was towed to 500 feet AGL, and released. He said that when he started his turn, the left wing dropped, and the glider entered a spin to the left. He applied opposite rudder, and the glider recovered after two turns. He said shortly thereafter he became disoriented, and does not remember anything else. A witness said that the glider entered another spin, about 100 feet AGL, and struck the ground at the approach end of runway 01. The pilot reported over 10 hours in gliders including 1 hour in make and model. He reported that there was no mechanical malfunction with the glider. According to the FAA, the glider was being flight tested, and had flown six times on the day of the accident. ## Factual narrative On September 6, 1997, at 1419 eastern daylight time, a homebuilt Marske-Monarch 1997, an experimental glider, N5377, was substantially damaged when it collided with terrain while maneuvering to land at the Braxton County Airport, Sutton, West Virginia. The certificated private pilot was seriously injured. Visual meteorological conditions prevailed and a flight plan was not filed. The local, personal flight was conducted under 14 CFR Part 91. According to the pilot, the glider was towed to 500 feet AGL, and released. He said when he started his turn, the left wing dropped, and the airplane entered a spin to the left. He applied opposite rudder, and the airplane recovered after two turns. He said he was disoriented shortly thereafter, and does not recall anything else. A witness, an instructor, reported that the glider made two 360 degree turns in normal flight. He said that about 400 feet AGL, the glider entered a spin, rotated about 2 turns and recovered. He said that the glider entered a second spin, about 100 feet AGL, and struck the ground at the approach end of runway 01. According to a Federal Aviation Administration (FAA) Inspector, the glider was undergoing 10 hours of flight testing. The glider was certified 3 days prior to the flight, and was test flown six times on the day of the accident. He said the glider came to rest about 180 feet beyond the approach end of runway 01. The glider was examined at the accident site by the FAA Inspector. The Inspector stated that flight control continuity was confirmed. He also reported that there was no record that the glider's pitot static system was calibrated prior to this flight, as recommended in advisory circular AC-90-89. The pilot reported over 10 of flight experience in gliders, including 1 hour in make and model. He reported that there was no mechanical malfunction with the glider. ## Aircraft - Registration: [N5377](https://openairdocs.org/deregistered/N5377-2005-04-14), registration cancelled 2005-04-14, S/N 002, built 1997 (OpenAirDocs) - Reported make and model: REYNOLDS MARSKE-MONARCH 1997 (MARSKE-MON) - Registry model: [Reynolds Donald H MARSKE MONARCH](https://openairdocs.org/model/reynolds-donald-h-marske-monarch) (registry code 05604RU) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider, amateur-built - Serial number: 02 - Airframe hours: 10 - Engines: unknown - Damage: Destroyed - Flight: Part 91 - Registered owner: Donald H Reynolds - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, August 26, 1997, 10 hours before - Departed: 48I - Airport: 48I, Braxton Co, runway 1, 4,000 × 60 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 312 total, 1 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 50 °F - Altimeter: 30.00 inHg - Observed at: EKN, 45 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 (OpenAirDocs). - [Accident 19970906025609A](https://openairdocs.org/incident/19970906025609A), Sep 6, 1997: Amtr MARCOJ5, Sutton, WV, Substantial damage. (.4) The pilot reported that the glider was towed to 500 feet AGL, and released. He said that when he started his turn, the left wing dropped, and the glider… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.