# NTSB Incident IAD99IA059
> **Boeing 727-200** · 1999-08-23 · WASHINGTON, DC, USA · NONE
## Event
- **NTSB number:** IAD99IA059
- **Event ID:** 20001212X19540
- **Type:** Incident
- **Date:** 1999-08-23
- **Location:** WASHINGTON, DC, USA
- **Coordinates:** 38.909942, -77.020767
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 171
- **Total aboard:** 171
## Aircraft
- **Make:** Boeing
- **Model:** 727-200
- **Registration:** N926TS
- **FAR Part:** 121
- **Engines:** 3
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The inadequate lubrication of the landing gear side strut assembly by company maintenance personnel.  A factor in the accident was the inadequate design of the assembly that trapped water and prevented adequate lubrication.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=IAD99IA059) · AI Analytics · CC0 1.0*