# NTSB CHI07CA229: Netz KIS TR2, N232AN, Willow Springs, MO, July 31, 2007 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: July 30, 2007, 19:30 local (Jul 31, 2007, 00:30 UTC) - Place: Willow Springs, MO - Coordinates: 36.989723, -91.95417 - Nearby events: https://openairdocs.org/map.md?lat=36.9897&lon=-91.9542&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report October 31, 2007 - Report: Approved by Office Director - Parties: Saint Louis, Missouri FSDO - NTSB case key (mKey): 66545 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA229 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66545/pdf - Page: https://openairdocs.org/ntsb/CHI07CA229 ## Probable cause The improper installation of the aileron control pushrod which led to a separation of the pushrod and subsequent loss of aircraft control. A factor was the pilot not being able to control the airplane after the pushrod separation. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, cruise - maintenance,installation - improper, other person (cause) - flt control syst,aileron control cable/rod - separation (cause) - Loss of control - in flight, cruise - aircraft control - not possible, pilot in command (contributing factor) - In flight collision with object, descent - uncontrolled - object - tree(s) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The airplane was destroyed when it impacted trees and terrain following a loss of control during flight. The pilot reported that he had performed a pre-flight examination of the airplane and no discrepancies were found. He said that after takeoff, he noticed that the airplane was flying left wing heavy. He said that he climbed to pattern altitude where he attempted a turn to the right. The right turn required more aileron input than was normal and the pilot decided to return to the airport. He said that he then made a left turn which became steep and he attempted to level the wings using right aileron at which time he felt something "let go." He was no longer able to control the airplane and it subsequently impacted trees and terrain. Examination of the airplane after the accident revealed that the left aileron push-pull control rod was separated into two pieces. Examination of the separated end fitting had portions of two rivets at 90 degrees to each other within the shank portion that inserts into the aluminum tube. The rivet shanks appeared to be machined or filed flush with the outside diameter of the insert. The aluminum pushrod tube had no evidence of drilled holes corresponding to the end fittings rivet locations, and no manufactured or shop formed rivet heads were present. No evidence could be found to indicate that the retaining rivets had been installed in the aluminum tube. ## Factual narrative The airplane was destroyed when it impacted trees and terrain following a loss of control during flight. The pilot reported that he had performed a pre-flight examination of the airplane and no discrepancies were found. He said that after takeoff, he noticed that the airplane was flying left wing heavy. He said that he climbed to pattern altitude where he attempted a turn to the right. The right turn required more aileron input than was normal and the pilot decided to return to the airport. He said that he then made a left turn which became steep and he attempted to level the wings using right aileron at which time he felt something "let go." He was no longer able to control the airplane and it subsequently impacted trees and terrain. Examination of the airplane after the accident revealed that the left aileron push-pull control rod was separated into two pieces. Examination of the separated end fitting had portions of two rivets at 90 degrees to each other within the shank portion that inserts into the aluminum tube. The rivet shanks appeared to be machined or filed flush with the outside diameter of the insert. The aluminum pushrod tube had no evidence of drilled holes corresponding to the end fittings rivet locations, and no manufactured or shop formed rivet heads were present. No evidence could be found to indicate that the retaining rivets had been installed in the aluminum tube. ## Aircraft - Registration: [N232AN](https://openairdocs.org/deregistered/N232AN-2008-12-17), registration cancelled 2008-12-17, S/N 115 (OpenAirDocs) - Reported make and model: Netz KIS TR2 - Registry model: [Netz Alan A KIS TR1](https://openairdocs.org/model/netz-alan-a-kis-tr1) (registry code 05606MI) (OpenAirDocs) - Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 115 - Airframe hours: 410 - Engines: Lycoming O-290 reciprocating - Damage: Destroyed - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, October 1, 2006 - Departed: 1H5, Willow Springs, MO ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 70; injuries: serious; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review March 1, 2007; flight hours: 400 total, 200 in this make and model ## Weather - Conditions: Visual (VMC), Day ## 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 20070730014689A](https://openairdocs.org/incident/20070730014689A), Jul 30, 2007: Amtr KISTR1, Willow Springs, MO, Destroyed. (-23) Pilot departed Willow Springs airport at approximately 7:15 CDT for a short local flight. On climb out, pilot reported needing more than normal right… 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.