# NTSB Accident DCA20LA107
> **BOEING 737** · 2020-05-19 · Victorville, CA, USA · NONE
## Event
- **NTSB number:** DCA20LA107
- **Event ID:** 20200521X63755
- **Type:** Accident
- **Date:** 2020-05-19
- **Location:** Victorville, CA, USA
- **Coordinates:** 34.570869, -117.32908
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 95
- **Total aboard:** 95
## Aircraft
- **Make:** BOEING
- **Model:** 737
- **Registration:** N820TJ
- **FAR Part:** 121
- **Engines:** —
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Improper installation of dorsal fin attach bolts which caused the dorsal fin to separate during flight, substantially damaging the left horizontal stabilizer.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA20LA107) · AI Analytics · CC0 1.0*