# NTSB FTW94LA087: Grumman G-164, N730Y, Almyra, AR, February 26, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 26, 1994, 08:30 local (14:30 UTC) - Place: Almyra, AR - Coordinates: 34.400146, -91.410545 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.4001&lon=-91.4105&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): 19003 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW94LA087 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/19003/pdf - Page: https://openairdocs.org/ntsb/FTW94LA087 ## Probable cause THE PARTIAL FAILURE OF THE BRAKE MASTER CYLINDER ASSEMBLY FOR UNDETERMINED REASONS. A FACTOR WAS THE SOFT TERRAIN ADJACENT TO THE RUNWAY. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, landing - roll - landing gear,normal brake system - failure,partial (cause) - reason for occurrence undetermined - Loss of control - on ground/water, landing - roll - directional control - not possible, pilot in command - Nose over, landing - roll - terrain condition - soft (contributing factor) ## Analysis THE PILOT STATED HE APPLIED BRAKES AFTER TOUCHDOWN AND THE RIGHT ONE FAILED. THE AIRPLANE VEERED LEFT OFF THE RUNWAY INTO A MUDDY FIELD AND NOSED OVER. A SUBSEQUENT INSPECTION OF THE BRAKE SYSTEM BY AN A&P MECHANIC REVEALED THAT THE RIGHT BRAKE WAS LOCKED UP AT THE MASTER CYLINDER AND WOULD NOT OPERATE. NO REASON FOR THE LOCK UP WAS REPORTED. ## Factual narrative On February 26, 1994, at approximately 0830 central standard time, a Grumman G-164, N730Y, was substantially damaged during landing at a private grass strip near Almyra, Arkansas. The airplane, owned and operated by the commercial pilot, was landing after a local aerial application flight. There was no flight plan filed and visual meteorological conditions prevailed. The pilot was not injured. The pilot stated he applied brakes after touchdown and the right one failed. The airplane subsequently veered left off the runway into a muddy field and nosed over. A subsequent inspection of the brake system by an A&P mechanic revealed that the right brake was locked up at the master cylinder and would not operate. No reason for the lock up was reported. ## Aircraft - Registration: [N730Y](https://openairdocs.org/deregistered/N730Y-2012-07-09), registration cancelled 2012-07-09, S/N 291 (OpenAirDocs) - Reported make and model: GRUMMAN G-164 - Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs) - Registry engine: [Jacobs R755B series](https://openairdocs.org/engine/jacobs-r755b-series) (registry code 35007, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 291 - Airframe hours: 3500 - Engines: P&W R-985-14B 450 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Padgett, Jeffery L. - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, February 1, 1994, 4 hours before - Departed: NONE - Destination: NONE - Airport: NONE, Private Grass Strip ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 31; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 2,200 total, 1,060 in this make and model, 45 in the last 90 days, 30 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 7 knots, gusting 16 - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 27 °F, dew point 9 °F - Altimeter: 30.00 inHg - Observed at: PBF, 25 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 19940226002989A](https://openairdocs.org/incident/19940226002989A), Feb 26, 1994: Scwzer G164, Almyra, AR, Substantial damage. Report right brake failed landing roll. Exited runway into soft mud. Nosed over. Right brake found to be locked. ## Other investigations on N730Y (3) 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 MKC87LA114](https://openairdocs.org/ntsb/MKC87LA114), Jun 1, 1987: Grumman G-164 (N730Y), Knoble, AR, substantial damage - [NTSB SEA81DYA11](https://openairdocs.org/ntsb/SEA81DYA11), Jun 10, 1981: Grumman G-164 (N730Y), Monteview, ID, substantial damage - [NTSB MKC72FCJ01](https://openairdocs.org/ntsb/MKC72FCJ01), Jul 1, 1971: Grumman G-164 (N730Y), Ainsworth, NE, destroyed 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.