# NTSB Incident OPS11IA499
> **BOEING 737** · 2011-04-18 · Camp Springs, MD, USA · —
## Event
- **NTSB number:** OPS11IA499
- **Event ID:** 20110420X31215
- **Type:** Incident
- **Date:** 2011-04-18
- **Location:** Camp Springs, MD, USA
- **Coordinates:** 38.800125, -76.86959
## Injuries
- **Highest injury:** —
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 0
## Aircraft
- **Make:** BOEING
- **Model:** 737
- **Registration:** —
- **FAR Part:** ARMF
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The misapplication of wake turbulence and instrument flight rules (IFR) separation criteria by air traffic controllers.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=OPS11IA499) · AI Analytics · CC0 1.0*