# NTSB Accident LAX99LA279
> **Bellanca 7ECA** · 1999-08-21 · LIVERMORE, CA, USA · NONE
## Event
- **NTSB number:** LAX99LA279
- **Event ID:** 20001212X19562
- **Type:** Accident
- **Date:** 1999-08-21
- **Location:** LIVERMORE, CA, USA
- **Coordinates:** 37.680843, -121.749145
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Bellanca
- **Model:** 7ECA
- **Registration:** N88408
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The failure of the no. 3 cylinder exhaust valve due to the operator's failure to adhere to recommended overhaul periods set by the engine manufacturer.  A factor in the accident was the operator's failure to comply with the manufacturer's mandatory service bulletin.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99LA279) · AI Analytics · CC0 1.0*