# NTSB Accident CEN16FA013
> **CESSNA 421B** · 2015-10-14 · Hammond, LA, USA · FATL
## Event
- **NTSB number:** CEN16FA013
- **Event ID:** 20151015X00706
- **Type:** Accident
- **Date:** 2015-10-14
- **Location:** Hammond, LA, USA
- **Coordinates:** 30.521667, -90.418334
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** CESSNA
- **Model:** 421B
- **Registration:** N33FA
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The loss of right engine power on takeoff due to maintenance personnel's failure to properly tighten the crankcase through-studs during cylinder replacement, which resulted in crankshaft fracture. Also causal were the pilot's failure to feather the propeller on the right engine and his failure to maintain control of the twin-engine airplane while maneuvering to return to the airport.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN16FA013) · AI Analytics · CC0 1.0*