# NTSB LAX07CA066: Burkhart Grob G-103A, N794G, Minden, NV, December 27, 2006 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: December 27, 2006, 13:00 local (21:00 UTC) - Place: Minden, NV - Coordinates: 39.000278, -119.751113 - Nearby events: https://openairdocs.org/map.md?lat=39.0003&lon=-119.7511&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report March 26, 2007 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 65086 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX07CA066 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65086/pdf - Page: https://openairdocs.org/ntsb/LAX07CA066 ## Probable cause The flight's encounter with a low ceiling while on approach that necessatiated an off-airport precautionary landing on unsuitable terrain. Obstructions were a factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight encounter with weather, approach - weather condition - low ceiling (cause) - In flight collision with terrain/water, emergency landing - unsuitable terrain or takeoff/landing/taxi area - encountered, pilot in command(cfi) (cause) - terrain condition - high obstruction(s) (contributing factor) - precautionary landing - intentional, pilot in command(cfi) ## Analysis The glider drug a wing and ground looped during an off airport landing short of the airport. The CFI and student released the tow line at 8,500 feet in turbulent lift conditions. About 20 minutes into the flight, the tow pilot radioed from the ground that a snow squall was rapidly moving in from the north. The CFI had the student head toward the airport and they prepared for a straight-in approach to runway 34. The wind speed increased and the ceiling quickly lowered. The CFI took control when he determined that they would have to fly a lot faster to beat the storm. About 3 miles south of the field, he noted that the ceiling was descending rapidly enough that he would have to go below the glide slope in order to maintain cloud clearance. He descended with spoilers and told the student to prepare for an off airport landing in a farmer's field short of the airport. The CFI set up for landing. He had to turn and change his path at the last second when he noticed an irrigation sprinkler in his path. The right wing tip contacted the ground, and the glider ground looped during landing, which resulted in substantial damage to the tail boom. The pilot indicated that he had obtained an abbreviated weather brief via telephone and the internet. The weather at the nearest official reporting station, which was 28 nautical miles north of the accident site/departure airport, was similar for a 6-hour period up to an hour before the glider's departure. The weather reports noted 10 miles visibility; winds from the north about 14 knots; and ceilings above 14,000 feet. In the next 30 minutes, the weather deteriorated to 1-mile visibility in light snow; winds gusting 22 to 30 knots; and a 1,000-foot ceiling. In the next 10 minutes, the visibility dropped to 1/4 mile; 20 minutes later the visibility was 3/4 mile. Over the next hour, the weather improved to 10 miles visibility; winds 14 gusting to 22 knots; and overcast conditions at 6,000 feet. ## Factual narrative On December 27, 2006, about 1300 Pacific standard time, a Burkhart Grob G-103A glider, N794G, collided with terrain during an off airport landing near Minden, Nevada. Soar Minden was operating the glider under the provisions of 14 CFR Part 91. The certified flight instructor (CFI) pilot and the student pilot sustained minor injuries; the glider sustained substantial damage. The local instructional flight departed Minden about 1215. Visual meteorological conditions prevailed at the nearest official reporting station; instrument meteorological conditions prevailed at the accident site. No flight plan had been filed. The pilot submitted a written report. The flight was to provide instruction on mountain wave conditions. The CFI and student released the tow line at 8,500 feet in turbulent lift conditions. The instructor took over the controls for the final minute of the tow due to the turbulence. After release, the student resumed control, and worked several small patches of lift south of the airport. About 20 minutes into the flight, the tow pilot radioed from the ground that a snow squall was moving in from the north. The CFI had the student head toward the airport, and prepare for a straight-in approach to runway 34. The wind speed increased, and the ceiling quickly lowered. The CFI took control when he determined that they would have to fly a lot faster to beat the storm. About 3 miles south of the field, he noted that the ceiling was descending rapidly enough that he would have to go below the glide slope in order to maintain cloud clearance. He descended with spoilers, and told the student to prepare for an off airport landing in a farmer's field short of the airport. The CFI set up for landing. He had to turn and change his path at the last second when he noticed an irrigation sprinkler in his path. The right wing tip contacted the ground, and the glider ground looped during landing, which resulted in substantial to the tail boom. The instructor's report indicated that he had obtained an abbreviated weather brief via telephone and the internet from the National Weather Service. The nearest official reporting stations was Reno, Nevada, which was 345 degrees at 28 nautical miles from the accident site. An aviation routine weather report (METAR) issued for Reno at 1056 stated: winds from 360 degrees at 14 knots; visibility 10 miles; skies 8,000 feet scattered, 12,000 feet broken, 14,000 feet overcast; temperature 6/42 degrees Celsius/Fahrenheit; dew point -1/30 degrees Celsius/Fahrenheit; altimeter 29.74 inches of mercury. METAR's for the previous 5 hours reported similar conditions. A METAR for Reno at 1130 stated: winds from 340 degrees at 22 knots gusting to 30 knots; visibility 1 mile with light snow; skies 1,000 feet scattered, 4,000 feet overcast; temperature 2/36 degrees Celsius/Fahrenheit; dew point -1/30 degrees Celsius/Fahrenheit; altimeter 29.77 inches of mercury. A METAR at 1137 reported 1/4 mile visibility in light snow and fog, and overcast at 2,000 feet. The visibility was 3/4 mile, and winds were 330 degrees at 11 knots in a 1202 METAR; other conditions remained the same. A METAR for Reno at 1256 stated: winds from 310 degrees at 14 knots gusting to 25 knots; visibility 10 miles; skies 6,000 feet overcast; temperature 3/37 degrees Celsius/Fahrenheit; dew point -4/25 degrees Celsius/Fahrenheit; altimeter 29.83 inches of mercury. ## Aircraft - Registration: [N794G](https://openairdocs.org/aircraft/N794G), registered now, S/N 34007-K-240 (OpenAirDocs) - Reported make and model: Burkhart Grob G-103A - Registry model: [Burkhart Grob G-103A TWIN II ACRO](https://openairdocs.org/model/burkhart-grob-g-103a-twin-ii-acro) (registry code 1660206) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider - Serial number: 34007-K-240 - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Soar Minden - Registered owner: Soar Minden - Airworthiness certificate: Standard, Normal - Departed: MEV, Minden, NV - Destination: Minden, NV - Airport: MEV, Minden, runway 34, 7,400 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 63; injuries: minor; commercial, flight instructor; airplane ratings: single-engine land; medical: class 2; flight hours: 1,505 total, 555 in this make and model, 753 as pilot in command, 60 in the last 90 days, 13 in the last 30 days - Student pilot; injuries: minor; flight hours: 0 total, 0 in the last 90 days, 0 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 14 knots, gusting 25 - Visibility: 10 statute miles - Lowest ceiling: 6,000 ft overcast - Temperature: 37 °F, dew point 25 °F - Altimeter: 29.82 inHg - Observed at: RNO, 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 20061227028769A](https://openairdocs.org/incident/20061227028769A), Dec 27, 2006: Grob G103ATWINII, Minden, NV, Substantial damage. (-23) On December 27, 2006 N794G departed Minden tahoe airport for an instructional flight at about 1215 hours. The pilot reported that the flight was in… ## Other investigations on N794G (1) 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. - [NTSB WPR10CA422](https://openairdocs.org/ntsb/WPR10CA422), Aug 22, 2010: Burkhart Grob G-103A (N794G), Minden, NV, substantial damage. Probable cause: The pilot’s inadequate flare and bounced landing recovery technique that resulted in a hard landing. 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.