# NTSB Accident WPR18LA265
> **Schweizer 300CBi 269C1** · 2018-09-15 · Granada Hills, CA, USA · NONE
## Event
- **NTSB number:** WPR18LA265
- **Event ID:** 20180915X63730
- **Type:** Accident
- **Date:** 2018-09-15
- **Location:** Granada Hills, CA, USA
- **Coordinates:** 34.285831, -118.494445
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Schweizer 300CBi
- **Model:** 269C1
- **Registration:** N2128T
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A partial loss of engine power that was the result of a loss of compression in the No. 1 and 4 cylinders due to damage and material separation from the exhaust valve heads, which resulted in a subsequent forced, hard landing. Contributing to the accident was inadequate maintenance inspection.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR18LA265) · AI Analytics · CC0 1.0*