# NTSB Incident DEN00IA023
> **Boeing 767-232** · 1999-12-06 · SALT LAKE CITY, UT, USA · NONE
## Event
- **NTSB number:** DEN00IA023
- **Event ID:** 20001212X20224
- **Type:** Incident
- **Date:** 1999-12-06
- **Location:** SALT LAKE CITY, UT, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 85
- **Total aboard:** 85
## Aircraft
- **Make:** Boeing
- **Model:** 767-232
- **Registration:** N111DN
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Total failure of the main landing gear retract actuator due to stress corrosion caused by the use of a faulty sealant by company maintenance personnel that allowed moisture to enter the joint.  A factor was the use of an improper fillet seal.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN00IA023) · AI Analytics · CC0 1.0*