# NTSB Accident DCA09MA021
> **BOEING 737-524** · 2008-12-21 · Denver, CO, USA · SERS
## Event
- **NTSB number:** DCA09MA021
- **Event ID:** 20081221X14648
- **Type:** Accident
- **Date:** 2008-12-21
- **Location:** Denver, CO, USA
- **Coordinates:** 39.75061, -105.000831
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 6
- **Minor:** 41
- **Uninjured:** 68
- **Total aboard:** 115
## Aircraft
- **Make:** BOEING
- **Model:** 737-524
- **Registration:** N18611
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** —
- **Weather:** VMC
## Probable cause

The captain’s cessation of right rudder input, which was needed to maintain directional control of the airplane, about 4 seconds before the excursion, when the airplane encountered a strong and gusty crosswind that exceeded the captain’s training and experience. Contributing to the accident were the following factors: 1) an air traffic control system that did not require or facilitate the dissemination of key, available wind information to the air traffic controllers and pilots; and 2) inadequate crosswind training in the airline industry due to deficient simulator wind gust modeling.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA09MA021) · AI Analytics · CC0 1.0*