Grunf
27th Nov 2006, 16:09
I guess these guys will have their eyes open next time when they fly from the Boeing Field. Too close, too close:E Good recovery skills though, kudos to the instructor:D
:\ (http://www.ntsb.gov/ntsb/brief.asp?ev_id=20061122X01707&key=1)
On November 16, 2006, approximately 1420 Pacific standard time, a Cessna 172, N9522S, encountered wake vortices from an experimental Boeing 747-400 LCF (Large Cargo Freighter), while on final approach to a VFR landing at Boeing-King County International Airport, Seattle, Washington. The certified flight instructor and her student were not injured, and the aircraft, which is owned and operated by Galvin Flying Service, did not sustain any damage.
According to the flight instructor, who's student was established at 1,000 feet mean sea level (msl) on a straight-in approach to Runway 13 left, about five seconds after being passed by the 747, which had been cleared for a visual approach to runway 13 right, the Cessna 172 rolled almost instantly to a 90 degree right bank, and descended in a nearly straight nose down attitude. The flight instructor took control of the aircraft, and was able to complete a recovery approximately 150 feet above the channel of water that runs along the east side of Terminal Island. The recovery was completed below the level of the booms of the cranes that were unloading the nearby container ships.
According to Boeing Aircraft Company, the 747 LCF, which is projected to be certified with a maximum gross landing weight of 575,000 pounds, weighed approximately 633,700 pounds at the time it passed the Cessna 172 on final approach.
At the time of the incident, there was a nine knot crosswind blowing approximately 80 degrees from the right of the path of both aircraft.
:\ (http://www.ntsb.gov/ntsb/brief.asp?ev_id=20061122X01707&key=1)
On November 16, 2006, approximately 1420 Pacific standard time, a Cessna 172, N9522S, encountered wake vortices from an experimental Boeing 747-400 LCF (Large Cargo Freighter), while on final approach to a VFR landing at Boeing-King County International Airport, Seattle, Washington. The certified flight instructor and her student were not injured, and the aircraft, which is owned and operated by Galvin Flying Service, did not sustain any damage.
According to the flight instructor, who's student was established at 1,000 feet mean sea level (msl) on a straight-in approach to Runway 13 left, about five seconds after being passed by the 747, which had been cleared for a visual approach to runway 13 right, the Cessna 172 rolled almost instantly to a 90 degree right bank, and descended in a nearly straight nose down attitude. The flight instructor took control of the aircraft, and was able to complete a recovery approximately 150 feet above the channel of water that runs along the east side of Terminal Island. The recovery was completed below the level of the booms of the cranes that were unloading the nearby container ships.
According to Boeing Aircraft Company, the 747 LCF, which is projected to be certified with a maximum gross landing weight of 575,000 pounds, weighed approximately 633,700 pounds at the time it passed the Cessna 172 on final approach.
At the time of the incident, there was a nine knot crosswind blowing approximately 80 degrees from the right of the path of both aircraft.