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 03.30.15

Airborne 03.31.15

Airborne 04.01.15

Airborne 03.26.15

Airborne 03.27.15

Airborne Hi-Def On YouTube

Airborne 03.30.15

Airborne 03.31.15

Airborne 04.01.15

Airborne 03.26.15

Airborne 03.27.15

 

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

04.01.15 Special: New Apple Watch May Eliminate Medical Exams For Airline Pilots

Combining The Capabilities Of Apple Technology And ADS-B Out May Replace Airline Pilot Medicals, But There Could Be A Catch ANN's April 1 "April Fool" Special Edition As the Pilots>[...]

04.01.15 Special: Inhofe -- Media Reporting On Aviation Should Be Knowledgeable

Proposes Legislation To Have Journalists Pass A Basic Written Exam ANN’s April 1 “April Fools” Special Edition Senator James Inhofe (R-OK) has proposed legislatio>[...]

04.01.15 Special: Regional Airline Looks To Undocumented Immigrants

Carrier Says Americans Unwilling To Take The Jobs At What It Can Afford To Pay ANN’s April 1 “April Fool” Edition It may just be the tip of the iceberg, but Repub>[...]

04.01.15 Special: Roscosmos Sues Boeing, SpaceX

Tries To Prevent Launches From Returning To American Soil The Russian Space Agency Roscosmos has filed a lawsuit in a Russian court against Boeing and SpaceX, saying the two U.S. c>[...]

Airborne 04.01.15: April 1st Special Episode!, David Bowie In Space, New TBirds!

Also: Inhofe Demands Media Aero-Accountability, "Super Duper" Cub, RANS' Exclusive WalMart Deal, Obama To Keep Air Force One, Cessna Bringing Back Bamboo Bomber Pop-star legend, Da>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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