Incident du Mucha 100-A près de Samedan : pilote blessé lors d'un décrochage et crash

Le 30 juillet 1960, un planeur Mucha 100-A s'est écrasé près de Samedan, en Suisse, après un décrochage en virage. Le pilote, qui avait une expérience limitée avec l'appareil, effectuait un vol alpin lorsque le planeur est entré en vrille et a percuté la colline. Le pilote a subi de graves blessures mais a survécu, tandis que le planeur a été détruit. L'enquête a souligné l'expérience insuffisante du pilote et une formation inadéquate sur le planeur haute performance comme facteurs contributifs.

1. Winch launch climb: The pilot launched by winch from Samedan airfield and climbed to an almost 400 m height above the field.
2. Low pilot experience: The pilot had only about 17 flight hours total and minimal prior time on the Mucha 100-A, without thorough conversion training to this higher-performance glider.
3. Demanding aircraft traits: The Mucha 100-A was a modern performance glider with relatively poor stall warning in turns and reduced acoustic and visual speed cues, placing higher demands on pilot skill.
4. Ridge soaring Muottas: After gaining height in ridge lift at Muottas Muragl, the pilot flew along the ridge crest about 50–80 m above ground near the Kulmhotel.
5. Stall in left turn: While initiating a left turn from the ridge toward the valley, the glider’s speed dropped below the safe minimum and it abruptly rolled off over the left wing.
6. Unrecovered spin: Following the stall, the glider entered a spin and, with insufficiently effective recovery, continued for nearly two turns toward the hillside.
7. Crash - serious injury: After almost two turns of spin, the glider impacted the west slope of Muottas Muragl around 1402, seriously injuring the pilot and destroying the aircraft.