The NTSB has a message for mechanics – pay attention to B-nuts! Todd Curtis, Greg Feith, and John Goglia dig into NTSB Safety Alert 086, which highlights four accidents that were caused in part by improperly tightened b-nuts.
Small parts led to big problems. Two of the accidents were fatal.
They focus on one accident that involves a very experienced pilot who also performed maintenance on the accident aircraft. The Bell 206 helicopter crashed following a fuel leak. The NTSB found that when he did maintenance on the aircraft, he failed to properly torque the nut.
Failure to follow defined procedures in the maintenance hangar and in the cockpit is the leading cause of aviation accidents. The pilot in this accident was fortunately able to walk away from the accident caused by not following the engine repair steps outlined by Rolls Royce.
The Flight Safety Detectives offer advice and details not found in the NTSB report and safety bulletin to help every pilot and mechanic avoid similar issues. Of the “dirty dozen” workplace mistakes, John believes complacency is the most prevalent and dangerous.
Related documents at the Flight Safety Detectives website:
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Music: “Inspirational Sports” license ASLC-22B89B29-052322DDB8
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UAPs Pose Flight Safety Threats – Episode 181
Medical Helicopter Crashes Show Aviation Safety Risks – Episode 185
Accident Kills Entire Reba McEntire Band – Episode 184
Gender Reveal Plane Crash Kills One, Bad Parts Back in Circulation – Episode 183
A Model for Investigating UAP Events – Episode 182
Fun Leads to Tragedy for Famous Composer James Horner – Episode 180
Aviation Thrill Seekers Beware – Episode 179
The Aviation Disaster that Ended an Empire – Episode 178
Carbon Fiber in the Air and Under the Sea – Episode 177
NYC Air Crash Shows Danger of Wing Contamination – Episode 176
Charter Flight Safety Boosted with Part 135 Certification Rules – Episode 175
Aviation Safety Lessons from First Flight into a Special Use Airport – Episode 174
Aircraft Cargo Door Headaches – Episode 173
Flight Plan Creates Aviation Safety Risks – Episode 172
John Goglia’s Unique Insight into USAir Plane Crash – Episode 171
Keith Green Plane Crash Shows Value of Accident Investigation – Episode 170
Aviation Maintenance & Real-World Safety – Episode 168
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