BOEING 747-4HQF
Istanbul, OF — August 17, 2024
Event Information
| Date | August 17, 2024 |
| Event Type | ACC |
| NTSB Number | DCA24LA293 |
| Event ID | 20240829195021 |
| Location | Istanbul, OF |
| Country | TU |
| Coordinates | 0.00000, 0.00000 |
| Highest Injury | NONE |
Aircraft
| Make | BOEING |
| Model | 747-4HQF |
| Category | AIR |
| FAR Part | 121 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DUSK |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 6 |
| Total Injured | 0 |
Event Location
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.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.