# NTSB ANC93LA163: Piper PA-18-150, N9016Y, Victory, AK, August 31, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 30, 1993, 17:00 local (Aug 31, 1993, 01:00 UTC) - Place: Victory, AK - Coordinates: 61.619258, -148.979232 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=61.6193&lon=-148.9792&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 2, 1994 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2418 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA163 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2418/pdf - Page: https://openairdocs.org/ntsb/ANC93LA163 ## Probable cause THE PARTIAL FAILURE OF THE AIRPLANE'S BRAKE SYSTEM. FACTOR WAS THE INTENTIONAL GROUND LOOPING BY THE PILOT-IN-COMMAND. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water encounter with terrain/water, landing - roll - landing gear,normal brake system - failure,partial (cause) - ground loop/swerve - intentional, pilot in command (contributing factor) ## Analysis UPON LANDING THE PILOT-IN-COMMAND STATED HE HAD NO BRAKES ON THE LEFT SIDE SO HE INTENTIONALLY GROUND LOOPED THE AIRPLANE. HE STATED THE BRAKES WERE MODIFIED WITH A CLEVELAND BRAKE MODIFICATION. HE STATED THE BOLT HEADS PULLED THROUGH THE BACKING PLATE. HE DID NOT SUBMIT ANY PARTS FOR EXAMINATION. ## Factual narrative On August 30, 1993 at 1700 Alaska daylight time, a wheel equipped Piper, PA-18-150 airplane, N9016Y, registered to and operated by the Pilot-in-Command, intentionally ground looped during the landing roll at a private airstrip located near mile 102 of the Glenn Highway. The personal flight, operating under 14 CFR Part 91, last departed the airstrip for a local flight. No flight plan was filed and visual meteorological conditions prevailed. The airplane was substantially damaged and the Private Certificated Pilot in Command, the sole occupant, was not injured. According to the Pilot in Command upon landing he realized he had no brakes on the left side during the landing roll and as a result ground looped the airplane causing damage to both left wing spars, wing tip, aileron and elevator. The Pilot stated the airplane was equipped with a Cleveland Brake Wheel modification and the bolt heads pulled through the backing plate. The Pilot-in-Command did not submit a NTSB Form 6120.1/2 and the bolts and backing plate for the Cleveland Brake Wheel modification were not submitted for examination. ## Aircraft - Registration: [N9016Y](https://openairdocs.org/aircraft/N9016Y), registered now, S/N 18-8904, built 1970 (OpenAirDocs) - Reported make and model: PIPER PA-18-150 - Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Engines: LYCOMING O-320 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Stevensen, William E. - Registered owner: Stevensen, William E. - Airworthiness certificate: Standard, Normal - Airport: Near Victory ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 35; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 2,186 total, 40 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Visibility: 50 statute miles - Lowest ceiling: 8,000 ft overcast ## 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 19930830032369A](https://openairdocs.org/incident/19930830032369A), Aug 30, 1993: Piper PA18150, Victory, AK, Substantial damage. No left brake landing on Private strip. Ground looped to prevent overrun. Brake bolts pulled thru backing plate. ## Other investigations on N9016Y (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 ANC79DA030](https://openairdocs.org/ntsb/ANC79DA030), Jan 13, 1979: Piper PA-18 (N9016Y), Cantwell, AK, substantial damage - [NTSB SEA71DVQ17](https://openairdocs.org/ntsb/SEA71DVQ17), Mar 15, 1971: Piper PA-18 (N9016Y), Mckenzie Br., OR, 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.