# NTSB LAX94LA205: Grumman G-164B, N6774K, Robbins, CA, April 23, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: April 23, 1994, 06:30 local (13:30 UTC) - Place: Robbins, CA - Location: 38.8669° N, 121.7071° W: Placed by OpenAirDocs: center of Robbins, CA, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=38.8669&lon=-121.7071&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 14, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 28731 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX94LA205 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/28731/pdf - Page: https://openairdocs.org/ntsb/LAX94LA205 ## Probable cause THE PILOT'S IMPROPER USE OF THE BRAKES. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Nose over, landing - roll - brakes(normal) - improper use of, pilot in command (cause) ## Analysis THE PILOT WAS LANDING ON A 2,700 FOOT-BY 40-FOOT DIRT RUNWAY. DURING THE LANDING ROLL, THE PILOT APPLIED HEAVY BRAKING UNTIL THE AIRPLANE NOSED OVER ONTO ITS BACK. ## Factual narrative On April 23, 1994, at 0630 hours Pacific daylight time, a Grumman G-164B, N6774K, nosed over while landing on runway 16 at Siller Airstrip, 3 miles north of Robbins, California. The pilot was completing a visual flight rules positioning flight. The airplane, registered to and operated by Wagner Aviation, Robbins, California, sustained substantial damage. The certificated commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated from a privately owned airstrip at Robbins, California, at 0620 hours. Mr. Jerry Griswold, Aviation Safety Inspector, Federal Aviation Administration (FAA), Sacramento [California] Flight Standards District Office, reported that he interviewed the pilot. The pilot reported that on touchdown he applied heavy braking and the airplane nosed over. Both the pilot and operator jointly submitted the required Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2, to the National Transportation Safety Board, Southwest Regional Office. The pilot and operator reiterated the pilot's statement to Inspector Griswold in the report. They also added that there were 30 feet of skid marks on the runway up to the point where the airplane came to rest. The dirt runway is 2,700 feet by 40 feet. They reported no mechanical malfunctions. ## Aircraft - Registration: [N6774K](https://openairdocs.org/deregistered/N6774K-2019-09-19), registration cancelled 2019-09-19, S/N 463B, built 1978 (OpenAirDocs) - Reported make and model: GRUMMAN G-164B - Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 463B - Airframe hours: 8292 - Engines: P&W R-1340-AN1 600 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: Wagner Aviation - Registered owner: Wagner Aviation - Airworthiness certificate: Special, Restricted (Special) - Last inspection: 100 hour, April 12, 1994, 53 hours before - Airport: Siller Airstrip, runway 16, 2,700 × 40 ft, dirt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 21,000 total, 120 in this make and model, 20,800 as pilot in command, 200 in the last 90 days, 200 in the last 30 days, 12 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 160° at 5 knots - Visibility: 20 statute miles - Lowest ceiling: none - Temperature: 55 °F - Altimeter: 29.00 inHg ## 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 19940423009259A](https://openairdocs.org/incident/19940423009259A), Apr 23, 1994: Scwzer G164B, Robbins, CA, Substantial damage. Applied too much brake landing on Private strip. Nosed over. ## Other investigations on N6774K (2) 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 LAX04LA126](https://openairdocs.org/ntsb/LAX04LA126), Feb 17, 2004: Grumman-Schweizer G-164B (N6774K), Tracy, CA, substantial damage. Probable cause: A loss of engine power for undetermined reasons during cruise flight. - [NTSB LAX95LA195](https://openairdocs.org/ntsb/LAX95LA195), May 25, 1995: Grumman G-164B (N6774K), Robbins, CA, substantial damage. Probable cause: a loss of engine power due to a separation of the number 6 cylinder, and the nose over during the subsequent forced 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.