Maryland EMS Helicopter Crashes into Potomac River
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NBC News
NTSB Offers New Possible Cause Of Helicopter Crash
Preliminary Report: Jet's Wake Turbulence Could Be Factor In Crash
WASHINGTON -- A preliminary report from the National Transportation Safety Board offers a new clue in the crash of a helicopter into the Potomac River.
The NTSB said wake turbulence from another aircraft may have been a factor in the crash near the Woodrow Wilson Bridge on Jan. 10.
When planes fly, streams come off the wing tips, leaving a wake of disturbed air.
"It's like two tornadoes coming off the wing tips of aircraft, and it increases in size as it leaves those wing tips, and it remains in an area, essentially falling in altitude for some period of time," said aviation expert George Novak.
One minute before the helicopter crashed, a jet flew over the Wilson Bridge, and the helicopter may have traveled in the flight path of that jet, possibly being influenced by the wake turbulence.
Preliminary Report: Jet's Wake Turbulence Could Be Factor In Crash
WASHINGTON -- A preliminary report from the National Transportation Safety Board offers a new clue in the crash of a helicopter into the Potomac River.
The NTSB said wake turbulence from another aircraft may have been a factor in the crash near the Woodrow Wilson Bridge on Jan. 10.
When planes fly, streams come off the wing tips, leaving a wake of disturbed air.
"It's like two tornadoes coming off the wing tips of aircraft, and it increases in size as it leaves those wing tips, and it remains in an area, essentially falling in altitude for some period of time," said aviation expert George Novak.
One minute before the helicopter crashed, a jet flew over the Wilson Bridge, and the helicopter may have traveled in the flight path of that jet, possibly being influenced by the wake turbulence.
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EMS Flight Was Clear Of Construction Cranes - NTSB
From the NTSB January, 13.
For the full text see the NTSB Advisory
Today, investigators from the National Transportation Safety Board inspected the fifth (and tallest) of the five cranes along the Potomac River near the Wilson Bridge construction project. No structural damage or obvious aircraft strike indications were found on this crane, or the four other cranes that were inspected yesterday.
