# NTSB Accident DCA24LA293
> **BOEING 747-4HQF** · 2024-08-17 · Istanbul, OF, TU · NONE
## Event
- **NTSB number:** DCA24LA293
- **Event ID:** 20240829195021
- **Type:** Accident
- **Date:** 2024-08-17
- **Location:** Istanbul, OF, TU
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 6
- **Total aboard:** 6
## Aircraft
- **Make:** BOEING
- **Model:** 747-4HQF
- **Registration:** N782CK
- **FAR Part:** 121
- **Engines:** 4
- **Damage:** SUBS
## Conditions
- **Light:** DUSK
- **Weather:** VMC
## Probable cause

The fatigue failure of multiple hinge ribs associated with the right outboard aileron, which resulted in abnormal aileron movement and airframe vibration. Contributing to the failure was the mis-rigged condition of the right outboard aileron, which increased operational loads on the hinge fittings during cruise flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DCA24LA293) · AI Analytics · CC0 1.0*