NTSB: Airbus A330 Experienced An 'Airspeed Anomaly' | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Most Recent Daily Airborne

Airborne On ANN

Airborne On YouTube/Hi-Def/Mac Friendly

Monday

Airborne 01.26.15

Airborne 01.26.15

Tuesday

Airborne 01.27.15

Airborne 01.27.15

Wednesday

Airborne 01.28.15

Airborne 01.28.15

Thursday

Airborne 01.29.15

Airborne 01.29.15

Friday

Airborne 01.23.15

Airborne 01.23.15

Wed, Jul 08, 2009

NTSB: Airbus A330 Experienced An 'Airspeed Anomaly'

Northwest Flight Crew In Japan Noted Airspeed Fluctuations

The NTSB has released a preliminary finding in an incident involving a Northwest Airlines Airbus A330 on a flight in Japan last month in which the onboard computers switched off the aircraft's autopilot possibly due in part to inconsistent airspeed indications.

The report reads:

NORTHWEST AIRLINES INC
Incident occurred Tuesday, June 23, 2009 in Kagoshima, Japan
Aircraft: AIRBUS A330-323, registration: N805NW
Injuries: 217 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed.

On June 23, 2009, at 0303 UTC, an Airbus 330-323, U.S. registration N805NW, operated by Northwest Airlines as flight 8 from Hong Kong, China, to Tokyo, Japan, experienced an airspeed anomaly while in cruise flight at FL390 approximately 50 miles southwest of Kagoshima, Japan. The crew reported that they were in normal cruise at FL390 and in visual conditions with some convective weather displayed on radar about 25 miles north of track, with thin cirrus clouds ahead.

After entering the cirrus and moderate precipitation and turbulence, the crew observed, and FDR confirms, the autopilot and autothrust switch off, and the aircraft switched to Alternate Law. The master caution and warning messages were activated. The crew followed flight manual procedures and the autopilot and normal law returned in about one minute, however the event quickly repeated itself, lasting for about 2 minutes. The crew turned the airplane 60 degrees off course to exit the weather as soon as the anomalous indications were observed. The autopilot, autothrust and other controls returned to functioning, but the airplane remained in alternate law for the rest of the flight.

File Photo

The crew observed, and FDR confirms, large airspeed fluctuations, small altitude fluctuations, and an overspeed alert. The flight continued to Tokyo, Narita airport and landed with no damage or injuries to the 9 crew and 208 passengers on board.

The incident occurred in Japanese airspace, and the investigation was delegated to NTSB by the Japanese Transportation Safety Board, who assigned an Accredited Representative to the investigation.

FMI: www.ntsb.gov

Advertisement

More News

AeroSports Update: Discovery XL-2 Production Is Underway

Discovery Aviation Announced That Production Of The New Discovery XL-2 Has Started If you are looking for a newly manufactured 2-place airplane suitable for the private owner or fo>[...]

Airborne 01.28.15: AMA Steps Up, AirAsia Stall Warnings, Obama Wants Carbon Cuts

Also: Ridiculous Arkansas Regs Proposed, Tecnam Juggernaut, New EC135 T2+ Training Helo, NBAA Joins 'Know Before You Fly', Wipaire Grand Opening, AirVenture SkyDive Record As the m>[...]

Airborne 01.28.15: AMA Steps Up, AirAsia Stall Warnings, Obama Wants Carbon Cuts

Also: Ridiculous Arkansas Regs Proposed, Tecnam Juggernaut, New EC135 T2+ Training Helo, NBAA Joins 'Know Before You Fly', Wipaire Grand Opening, AirVenture SkyDive Record As the m>[...]

Piper Aircraft Launches M500 With Latest Garmin Avionics

Caldecott Says New Meridian Features Electronic Stability Protection, Underspeed Protection, Other Safety Improvements Piper Aircraft has introduced its newest top-of-the-line M-Cl>[...]

Airborne 01.27.15: USCG Rescue!, Two Eagles Over Pacific, UAV v White House

Also: Hartzell/Red Bull, GA Coalition, Aero-Calendar, Commemorative Air Force, Sarah Brightman To ISS, Hot Air Balloon Endurance Record The pilot of a single engine Cirrus SR22 air>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2015 Web Development & Design by Pauli Systems, LC