# NTSB CHI98LA230: Grumman G-164A, N9632, Red Lake Falls, MN, May 21, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 21, 1998, 07:30 local (12:30 UTC) - Place: Red Lake Falls, MN - Coordinates: 47.880516, -96.269752 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.8805&lon=-96.2698&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 19, 1999 - Report: Approved by Office Director - NTSB case key (mKey): 10944 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98LA230 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10944/pdf - Page: https://openairdocs.org/ntsb/CHI98LA230 ## Probable cause a locked brake for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - landing gear,normal brake system - locked (cause) - landing gear,normal brake system - undetermined (cause) - On ground/water encounter with terrain/water, landing - roll - terrain condition - rough/uneven (contributing factor) - Nose over, landing - roll ## Analysis The airplane was landed on a portion of the runway which is not paved. It then traveled onto the paved portion during the landing roll. After rolling about 50 feet on the paved portion, the airplane veered right and continued off the side of the runway despite remedial action by the pilot. The airplane continued into a plowed field where it nosed over. Skid marks were visible on the runway after the accident. Inspection of the airplane failed to reveal the reason for the loss of control. ## Factual narrative On May 21, 1998, at 0730 central daylight time, a Grumman G-164A, N9632, operated by NOCO Ag Service nosed over following a loss of directional control while landing on runway 15 at the Red Lake Falls Municipal Airport, Red Lake Falls, Minnesota. Visual meteorological conditions prevailed and no flight plan was filed. The commercial pilot was not injured. The airplane was substantially damaged. The 14 CFR Part 137 flight originated from Red Lake Falls, at 0700 cdt. The pilot stated she made a three point landing on the grass runway. She stated the airplane rolled for about 100 feet, then the rollout was continued on the paved runway. According to the pilot after traveling about 50 feet on the paved runway the airplane turned to the right at a 10 to 15 degree angle from the centerline. The pilot stated she applied full left rudder followed by the left brake. The airplane veered off the paved runway surface where the pilot applied both brakes. She stated the airplane skidded for approximately 75 feet prior to entering a plowed field where it nosed over. The runway dimensions at the Red Lake Falls Airport is 2,550 feet long and 148 feet wide. Near the approach end of runway 15 there is a section of the runway 1,000 feet long by 60 feet wide which is paved. Inspection of the airplane was conducted by an inspector from the Federal Aviation Administration Minneapolis, Minnesota, Flight Standards District Office. The inspector reported that skid marks were visible on the runway which indicated the right wheel was locked up. Inspection of the wheel failed to reveal the reason for it locking up. ## Aircraft - Registration: [N9632](https://openairdocs.org/aircraft/N9632), registered now, S/N 1196, built 1974 (OpenAirDocs) - Reported make and model: Grumman G-164A - Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1196 - Airframe hours: 5581 - Engines: P&W R1340-AN1 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Noco Ag Service, Inc - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, April 23, 1998, 65 hours before - Departed: D81 - Airport: D81, Red Lake Falls, runway 33, 2,550 × 148 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 24; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 819 total, 353 in this make and model, 682 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 40° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 55 °F, dew point 45 °F - Altimeter: 29.00 inHg - Observed at: GFK, 42 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 19980521020229A](https://openairdocs.org/incident/19980521020229A), May 21, 1998: Scwzer G164A, Red Lake Falls, MN, Substantial damage. As tailwheel touched down aircraft veered right. Brakes were used to correct but resulted in a nose over.(.4) on may 21, 1998, at 0730 central daylight time, a… ## Other investigations on N9632 (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 CHI05LA229](https://openairdocs.org/ntsb/CHI05LA229), Aug 12, 2005: Grumman G-164A (N9632), Marshalltown, IA, substantial damage. Probable cause: The loss of engine power for undetermined reasons during initial climb and the unsuitable landing area encountered by the pilot during a forced landing. - [NTSB FTW76DPG04](https://openairdocs.org/ntsb/FTW76DPG04), Jul 11, 1975: Grumman G-164A (N9632), Cotton Plant, AR, substantial damage 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.