NTSB: Issues Helo Safety Recommendation(s) A-03-18-21 | 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

Monday

Tuesday

Wednesday

Thursday

Friday

Airborne On ANN

Airborne 12.05.16

Airborne 12.06.16

Airborne 12.07.16

Airborne 12.08.16

Airborne 12.09.16

Airborne Hi-Def On YouTube

Airborne 12.05.16

Airborne 12.06.16

Airborne 12.07.16

Airborne 12.08.16

Airborne 12.09.16

Wed, May 28, 2003

NTSB: Issues Helo Safety Recommendation(s) A-03-18-21

The NTSB recommends that the FAA:

Issue a flight standards information bulletin (FSIB) informing operators and pilots of single-engine helicopters equipped with Rolls-Royce Model 250 series IV engines of the circumstances of this accident and indicating that a potential fault with the full authority digital electronic control system may cause a sudden, uncommanded decrease of engine power without any identified cockpit indication or warning. The FSIB should also note that switching to manual mode may correct the engine power problem but that recovery to full power may take 2 to 6 seconds, thus possibly precluding a successful recovery to normal flight while operating in those altitude/airspeed combinations under which a safe autorotational landing is not probable. (A-03-18)

Require the manufacturer of the full authority digital electronic control system installed on helicopters equipped with Rolls-Royce Model 250 series IV engines to modify the system such that an erroneous or erratic in-range potentiometer throttle position angle signal will not cause an uncommanded increase or decrease in fuel flow, which could result in a drastic reduction in engine power. (A-03-19)

Prohibit the operators of single-engine helicopters equipped with Rolls-Royce Model 250 series IV engines from operating in those altitude/airspeed combinations under which a safe autorotational landing is not probable until it is shown that the operation of these engines provides an adequate margin of safety. (A-03-20)

Require, on an expedited basis, that the on-aircraft test procedure developed by Rolls-Royce to identify faulty potentiometers be performed, on a repetitive basis at a conservative interval, on all Bell 407, MD-600, and OH-58 helicopters to determine if the potentiometer contained in the hydromechanical unit (HMU) is working properly. HMUs with faulty potentiometers should be replaced. (A-03-21)

FMI: www.ntsb.gov/Recs/letters/2003/A03_18_21.pdf

Advertisement

More News

Airborne 12.08.16: Trump v AF1, Gordon Bennett Cup '17, Skydiving At Casa Grande

Also: Intoxicated Pilot, Seaplane Pilots, AEA/EASA, Drones As Lifesavers, ISS Update, T-50A Flight Ops, Safran President-elect, Donald Trump set the world of aviation and the media>[...]

City Of Orlando Rewrites Drone Code, Still Tries to Supplant FAA

Cites Explosive Growth Of Hobby Aircraft, Advances In Technology The City of Orlando, FL has rewritten the section of its municipal code dealing with unmanned aircraft in light of >[...]

Search Continues For Missing Marine In Japan

Ejected From F/A-18 Hornet Off The Coast Of Japan Wednesday The Marine Corps is continuing its search for a pilot who went missing after ejecting from his F/A-18 Hornet Wednesday o>[...]

Airborne 12.07.16: SpaceShipTwo Free Flt, Newest Tecnam, Hurricane Hunters Move

Also: Chelan Seaplanes Debacle, Electrifying E-Fest, Delta's New Airbus, Orion Update, ACSS NXT-700, Flyht, Duncan Aviation The newest SpaceShipTwo flew free of its mother ship for>[...]

Airborne 12.08.16: Trump v AF1, Gordon Bennett Cup '17, Skydiving At Casa Grande

Also: Intoxicated Pilot, Seaplane Pilots, AEA/EASA, Drones As Lifesavers, ISS Update, T-50A Flight Ops, Safran President-elect, Donald Trump set the world of aviation and the media>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2016 Web Development & Design by Pauli Systems, LC