Burkhart GROB G-103A  Twin II ACRO Schweizer SGS 1-23D Mcholland C L Solitare AMS-Flight D.O.O. DG-500  Elan Orion Glasflugel Standard Libelle Rolladen-Schneider GMBH LS-3 Burkhart GROB Flugzeugbau  G102 Club Astir IIIB LET L 33 Solo Doktor Fiberglass H101 Salto Schleicher ASW-27 Schweizer SGS 2-33A Eiriavion OY PIK 20B Schleicher ASW-20 Schweizer SGS 2-32 Schweizer SGS 2-32 2 uninjured 1 minor 2 uninjured 2 uninjured 1 fatal 1 serious 1 fatal 1 fatal 1 uninjured 1 minor 2 uninjured 1 uninjured 1 fatal 1 fatal,  serious 1 serious,  2 uninjured The certified flight instructor's inadequate compensation for the crosswind and  delayed remedial action during landing, which resulted in a ground loop. The pilot's loss of control during an intentional aerobatic maneuver (spin) resulting  in a collision with trees. The glider pilot’s misjudgment while approaching to land, which resulted in an  off-airport landing. The in flight loss of lift while landing, resulting in a collision with a fence. Probable cause not yet released. The glider pilot's delayed response to changing weather conditions, which  resulted in an off-airport landing into trees. Probable cause not yet released.  Probable cause not yet released.  The glider's encounter with turbulence and loss of lift, which resulted in a  ditching in a lake. Glider struck two transmission lines.  Each pilot thought that the other had control of the aircraft.  Probable cause has not been determined.  Probable cause has not been determined. Probable cause has not been determined. The pilot’s inadequate altitude to clear a ridgeline while maneuvering over a  mountainous area. Aircraft Type Injuries Probable Cause Figure 13-2.  Some accidents reported by the National Transportation Safety Board (NTSB) from November 1, 2011 through October 31, 2012.  •  Play the “what if” game and offer solutions to the  scenarios you create. Human Error Indiscipline Types of Errors Unintentional Overconfidence 13-3 The key to preventing complacency is keeping your mind  sharp at all times by “being proactive rather than reactive.” Human error is defined as a human action with unintended  consequences. There is nothing inherently wrong or  troublesome with error itself, but when you couple error  with aviation and the negative consequences that it  produces it becomes extremely troublesome. Training, flight  examinations (written or oral), and operational checks should  not be restricted to attempt to avoid errors but rather to make  them visible and identify them before they produce damaging  and regrettable consequences. Simply put, human error is not  avoidable but it is manageable.  [Figure 13-3] Much like complacency, as pilots gain experience the failure  to comply with certain standards seem to be evident in many  aviation accidents. Either they feel their experience has taught  them an easier or faster way to do certain tasks, or their attitude  is not in alignment with the guidelines set forth by more  experienced aviators. Nevertheless, indiscipline can be a very  dangerous attitude that can easily lead to unsafe behaviors.  An unintentional error is an unintentional wandering or  deviation from accuracy. This can include an error in your  action (a slip), opinion, or judgment caused by poor reasoning,  carelessness or insufficient knowledge (a mistake). For  example, a pilot reads the glider performance numbers from  Similarly to complacency, familiar circumstances or  repetition can lead to a state of overconfidence. Developing  and maintaining a sense of confidence toward your abilities  is acceptable unless it leads to cutting corners and ignoring  proper procedure.