# NTSB CHI95LA080: Schweizer G-164B, N3633Q, Brule, NE, February 3, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 3, 1995, 09:27 local (16:27 UTC) - Place: Brule, NE - Coordinates: 41.089458, -101.880203 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.0895&lon=-101.8802&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 24, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 9831 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI95LA080 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9831/pdf - Page: https://openairdocs.org/ntsb/CHI95LA080 ## Probable cause Loss of engine power due to undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - reason for occurrence undetermined (cause) - Forced landing, descent - emergency - Nose over, landing ## Analysis THE PILOT REPORTED THAT HE EXPERIENCED ENGINE POWER FLUCTUATIONS. WHEN HE SCANNED THE ENGINE GAUGES, HE OBSERVED NO FUEL PRESSURE INDICATION. HE SET UP FOR A FORCED LANDING, AND THE ENGINE LOST POWER. HE MANEUVERED OVER A SET OF POWERLINES AND THE AIRPLANE NOSED OVER DURING THE LANDING ATTEMPT, SUSTAINING SUBSTANTIAL DAMAGE. INSPECTION OF THE AIRPLANE REVEALED THAT THERE WAS SUFFICIENT FUEL ON BOARD, THE GRAVITY FEED FUEL FLOW TO THE FIREWALL WAS VERIFIED, AND THE VENT SYSTEM WAS CHECKED. EXAMINATION OF THE ENGINE AND LOW PRESSURE FUEL PUMP REVEALED NO EVIDENCE OF PREIMPACT MECHANICAL MALFUNCTION. ## Factual narrative On February 3, 1995, at 0927 mountain standard time, a Schweizer G-164B airplane, N3633Q, operated by Frank R. Martin, sustained substantial damage when it nosed over during a forced landing near Brule, Nebraska. The commercial pilot reported no injuries. The positioning flight, conducted under 14 CFR Part 91, departed Hershey, Nebraska, about 0900, with a planned destination of Kimball, Nebraska. Visual meteorological conditions prevailed and no flight plan was filed. The pilot reported that the winds at the time of the accident were from the northwest at 25 gusting to 30 knots. He experienced engine power fluctuations. When he scanned the engine gauges, he observed no fuel pressure indication. He reported the gas generator was fluctuating and the turbine temperature was "OK." He set up for a forced landing, and the engine lost power. He maneuvered over a set of powerlines and the airplane nosed over during the landing attempt, sustaining substantial damage. The wreckage was examined by a Federal Aviation Administration (FAA) Airworthiness Inspector. He reported that the wreckage was moved prior to his arrival. Sufficient fuel was on board, gravity feed fuel flow to the firewall was verified, and the vent system was checked. He reported no evidence of preimpact airframe malfunction. The engine was transported to Dallas, Texas, and examined. The FAA Aviation Safety Inspector, who observed the examination, reported significant impact damage, minor rotational damage, and no evidence of preimpact mechanical malfunction. The low pressure fuel pump exhibited "major" impact damage and could not be tested. Partial disassembly revealed no internal damage. ## Aircraft - Registration: [N3633Q](https://openairdocs.org/deregistered/N3633Q-2012-04-05), registration cancelled 2012-04-05, S/N 777B (OpenAirDocs) - Reported make and model: SCHWEIZER G-164B - Registry model: [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b) (registry code 8059055) (OpenAirDocs) - Category: Airplane - Serial number: 777B - Airframe hours: 2881 - Engines: P&W PT6A-20B 550 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Registered owner: Frank R. Martin - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, December 29, 1994, 1 hours before - Departed: HERSHEY, NE - Destination: IBM, KIMBALL, NE ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 11,500 total, 10,500 in this make and model, 200 in the last 90 days, 100 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 18 knots - Visibility: 25 statute miles - Lowest ceiling: none - Temperature: 36 °F, dew point 28 °F - Altimeter: 30.00 inHg - Observed at: BFF, 85 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 19950203001089A](https://openairdocs.org/incident/19950203001089A), Feb 3, 1995: Scwzer G164B, Brule, NE, Substantial damage. En route noted no fuel pressure. Nosed over on forced landing. No anomalies found on post accident inspection. ## Other investigations on N3633Q (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 LAX07LA168](https://openairdocs.org/ntsb/LAX07LA168), May 13, 2007: Schweizer G-164B (N3633Q), Colusa, CA, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain clearance from wires. - [NTSB LAX90DVG01](https://openairdocs.org/ntsb/LAX90DVG01), Nov 16, 1989: Schweizer G-164B (N3633Q), Grimes, CA, substantial damage. Probable cause: FAILURE OF THE COUNTER WEIGHT BRACKET TO THE PROPELLER ASSEMBLY. 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.