# NTSB Accident CEN24LA128
> **EUROCOPTER DEUTSCHLAND GMBH MBB-BK 117 C-2** · 2024-03-07 · West Lafayette, IN, USA · NONE
## Event
- **NTSB number:** CEN24LA128
- **Event ID:** 20240307193891
- **Type:** Accident
- **Date:** 2024-03-07
- **Location:** West Lafayette, IN, USA
- **Coordinates:** 40.415397, -86.930936
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** EUROCOPTER DEUTSCHLAND GMBH
- **Model:** MBB-BK 117 C-2
- **Registration:** N191LL
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** NITE
- **Weather:** VMC
## Probable cause

The failure of maintenance personnel to properly install the tail rotor pitch change slider attachment hardware (T-bolt), which led to the disconnection of the pitch change slider, a loss of tail rotor control, and subsequent hard landing. Contributing to the accident was maintenance personnel’s failure to complete a maintenance discrepancy entry on the work order for the removal of the T-bolt.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN24LA128) · AI Analytics · CC0 1.0*