# NTSB Accident WPR17LA031
> **PIPER PA 31T** · 2016-12-05 · Missoula, MT, USA · NONE
## Event
- **NTSB number:** WPR17LA031
- **Event ID:** 20161206X34431
- **Type:** Accident
- **Date:** 2016-12-05
- **Location:** Missoula, MT, USA
- **Coordinates:** 46.875831, -113.996948
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA 31T
- **Registration:** N909PW
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

Failure of the left windshield due to moisture ingression into the windshield laminate, which deteriorated the strength of the windshield.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR17LA031) · AI Analytics · CC0 1.0*