# NTSB Incident WPR16IA100
> **PIPER PA28** · 2016-04-29 · San Carlos, CA, USA · NONE
## Event
- **NTSB number:** WPR16IA100
- **Event ID:** 20160505X40535
- **Type:** Incident
- **Date:** 2016-04-29
- **Location:** San Carlos, CA, USA
- **Coordinates:** 37.511943, -122.249443
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** PIPER
- **Model:** PA28
- **Registration:** N200KR
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of maintenance personnel to properly install and secure the input swivel boot on the swivel joint, which resulted in excessive vibration that led to fatigue cracks and failure of the throttle cable.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR16IA100) · AI Analytics · CC0 1.0*