# Accident 20151007022999A: Cub Crafters Inc CC11-100, Lawrenceville, GA, October 7, 2015 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: October 7, 2015, 17:36 local time - Place: Lawrenceville, GA - Airport: Gwinnett County - Briscoe Fiel - Damage: Substantial damage - Phase of flight: Landing: Rollout - Operating rules: General operating rules (Part 91) - Location: 33.9781° N, 83.9624° W: Placed by OpenAirDocs at GWINNETT COUNTY/BRISCOE FLD (LZU), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=33.9781&lon=-83.9624&mi=10 - Aircraft: N505ZW, registered now (https://openairdocs.org/aircraft/N505ZW) (OpenAirDocs) - Registry model: Cub Crafters CC11-100 (registry code 060002H, https://openairdocs.org/model/cub-crafters-cc11-100) (OpenAirDocs) - Registry engine: Continental O-200A (registry code 17404, https://openairdocs.org/engine/continental-o-200a) (OpenAirDocs) - Reported make and model: CUB CRAFTERS INC CC11-100 - Reported engine: CONT MOTOR O-200A88B - People aboard: 1 - Fatal injuries: 0 - Other injuries: 0 - Pilot certificates: Student - Pilot flight hours: 240 total, 40 in this make and model, 1 in the last 90 days - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20151007022999A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. ON 10/7/2015 THE PILOT OF N505ZW, A CUB-CRAFTER (AN ELSA/CUB) WAS LANDING @ LZU/RWY 25. THE WEATHER WAS EXCEPTIONAL, (ATIS P METAR KLZU 072045Z 00000KT 10SM CLR 27/12 A3007) WITH A NO WIND CONDITION. THE PILOT STATED AS THE AIRCRAFT TOUCHED DOWN, WITH THE AIRCRAFT ALIGNED WITH THE RUNWAY, THE LEFT MAIN GEAR TOUCHED DOWN FIRST IN A NORMAL/FIRM MANNER. THE PILOT THEN STATED THAT HE THOUGHT THE LEFT TIRE DEFLATED BECAUSE THE LEFT SIDE OF THE AIRCRAFT FELL LIMP AND THEN THE AIRCRAFT STARTED TO VEER TO THE LEFT. THE AIRCRAFT CAME TO A STOP AFTER THE AIRCRAFT DEPARTED FROM THE CENTER OF THE RUNWAY WITH THE LEFT WING TIP CONTACTING THE GRASS/SOIL AREA TO THE LEFT OF THE RUNWAY. WHEN THE AIRCRAFT WAS INITIALLY LOOKED AT (IT WAS MOVED INTO THE OWNER'S HANGAR #5 ON THE EAA HANGER ROW), IT SEEMS THAT THE LEFT MAIN COLLAPSED AND FOLDED UNDER THE AIRCRAFT, POSSIBLY DUE TO A PILOT INDUCED SIDELOAD. THE INITIAL MECHCANICAL EVALUATION THAT WAS MADE INDICATED THAT THE WHEEL/BEARING ASSEMBLY MAY HAVE FAILED, WHICH LEAD TO THE FAILURE OF THE CABANE VEE ASSEMBLY AND THE SHOCK COVER ASSEEMBLY WHICH ALLOWED THE GEAR TO COLLAPSE AND CAUSED THE AIRCRAFT TO VEER OFF THE RUNWAY. THIS INITIAL MECHANICAL EVALUATION LEADS TO AN OUTCOME THAT SEEMS TO BE A MECHANICAL ISSUE VERSES A PILOT INDUCED ERROR, BUT FAA WAITED FOR THE RESULTS OF THE TEARDOWN OF THE WHEEL ASSEMBLY TO MAKE THIS DETERMINATION. THE INSPECTORS ASKED THE OPERATOR^/OWNER/^PILOT TO LET THEM KNOW WHEN THE TEAR-DOWN OF THE LEFT WHEEL ASSEMBLY WAS TO BE CONDUCTED SO THEY CAN DETERMINE WHAT HAPPENED. INSTEAD, THE OPERATOR^/OWNER/^PILOT CALLED THE FAA AFTER THE TEARDOWN WAS COMPLETED. AN A/W INSPECTOR WENT AND LOOKED AT THE REPLACED PARTS. THE FIRST THING THE A/W INSPECTOR NOTICED WAS THAT THERE WAS NO MAIN GEAR AXLE NUT COTTER PIN. THIS COULD HAVE CAUSED THE AXLE NUT/BEARING ASSEMBLY/OUTTER WHEEL HALF TO COME LOOSE AFTER MULTIPLE LANDINGS. THIS COULD HAVE LEAD TO THE FAILURE OF THE OUTTER HALF OF THE WHEEL ASSEMBLY. ## NTSB investigation None matched to this report by aircraft and date. Search the NTSB's own records: https://data.ntsb.gov/carol-main-public/basic-search From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- 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.