NTSB Releases Probable Cause Report In 2011 Wright B Flyer Accident | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 10.19.17

Airborne 10.16.17

Airborne 10.17.17

Airborne 10.18.17

Airborne 10.19.17

Airborne 10.20.17

Airborne-Unmanned 10.17.17

Airborne-YouTube

AMA 10.19.17

Airborne 10.16.17

Airborne 10.17.17

Airborne 10.18.17

Airborne 10.19.17

Airborne 10.20.17

Airborne-Unmanned 10.17.17

NEW!!! 2017 AirVenture Innovation Preview -- YouTube Presentation / Vimeo Presentation

Tue, Jan 22, 2013

NTSB Releases Probable Cause Report In 2011 Wright B Flyer Accident

Mechanical Failure Traced To An 'Incomplete Weld' On The Left Propeller Shaft

Pilot error following a mechanical failure is the probable cause of an accident involving a replica Wright B Flyer which occurred in Springfield, OH, in July, 2011. The accident resulted in the fatal injury of the two pilots on board the airplane for the test flight.

According to the operator’s accident report:

"The experimental airplane was involved in the initial phases of flight testing. Flying qualities, stability and control and performance were  being tested. Depending on the weather conditions test points were selected from a flight test matrix. The pilots, always two in the aircraft, would brief the flight, fly the test points and document the results.

"Depending on how well the test conditions were met the pilots would show that test point as complete and select another test to fly. The morning of the accident the pilots brief was not attended by any other person; exactly what points they were testing is not known."

NTSB Identification: CEN11FA528
14 CFR Part 91: General Aviation
Accident occurred Saturday, July 30, 2011 in Springfield, OH
Probable Cause Approval Date: 01/15/2013
Aircraft: WRIGHT B FLYER INC WRIGHT B FLYER, registration: N453WB
Injuries: 2 Fatal.

The experimental amateur-built replica airplane was on a test flight with two pilot-rated occupants. Another pilot heard a radio transmission from the accident airplane indicating that they were going to land in a field about 5 miles north of the departure airport. Witnesses reported that the airplane’s engine rpm varied while it was flying at a low altitude. The airplane was then observed in a spiraling descent to the ground. Postaccident examination of the airplane’s left propeller shaft revealed a broken weld, which would have prevented the left propeller from being driven by the engine. Further examination of the joint identified incomplete weld penetration during welding, thus about 25 to 35 percent of the through thickness of the propeller shaft tube was not welded to the propeller shaft end. This incomplete weld penetration occurred in the inner areas of the joint. Visible defects, such as pores and voids, were observed in the welded areas. The part’s engineering drawing specifies complete weld penetration. The on-scene accident examination of the wreckage did not reveal any other preimpact anomalies. Despite the resultant partial loss of thrust, the flight crew should have been able to maintain control of the airplane during the forced landing attempt.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The flight crew’s failure to maintain airplane control following a partial loss of engine thrust during cruise flight. Contributing to the accident was the failed weld as a result of incomplete welding on the left propeller shaft, which led to the partial loss of engine thrust.

(Wright B Flyer replica pictured in file photo)

FMI: www.ntsb.gov

Advertisement

More News

RFP: ANN Seeking New Site/Facility For Major Studio Upgrade

It's Official: Aggressive Upgrades For New Airborne Programs WILL Require New Digs It's been in development for years, but we're getting to a point where we think we can pull off s>[...]

Airborne 10.19.17: 200th TBM 900-Series, MooneyShares, E-AB Accident Stats

Also: Supersonic Test, Kobe Steel, Sullenberger Awarded, A-29 Super Tucanos, Textron, 109th AW CDR Daher recently rolled out its 200th TBM 900-series very fast turboprop aircraft s>[...]

AMA Drone Report 10.19.17: Drone/Airliner Midair?, FAA Sued, CNN 107 Waiver

Also: Swedish Drone Ban Lifted, Rocky Mountain Hobby-Expo, Drone Shark Detection, Kittyhawk DJI Sync 2.0 Recent reports about a midair collision between a jet and a drone have been>[...]

Airborne-Unmanned 10.17.17: Eagles v Drones, DJI AeroScope, Drone Policy

Also: AeroVironment Award, Washington State Patrol, Altavian Nova UAS, Robotaxis The French Military is training four Golden Eagles to attack drones in flight as a way to defend ag>[...]

Airborne 10.20.17: Santa Monica Setback, Red Bull Aviatrix, C-49 Flies Again

Also: HondaJet World Tour, Barnstorming, SpaceX, Dauntless, Fixed-Wing VTOL, Gravitational-Waves, Swedish Drones The City of Santa Monica may now proceed with shortening the runway>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC