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

Airborne Unlimited-
Monday

Airborne-Unmanned w/AUVSI-
Tuesday

Airborne Unlimited-
Wednesday

AMA Drone Report-
Thursday

Airborne Unlimited-
Friday

Airborne On ANN

Airborne 04.16.18

Airborne-UnManned 04.17.18

Airborne 04.18.18

AMA Drone Report 04.19.18

Airborne 04.20.18

Airborne-YouTube

Airborne 04.16.18

Airborne-UnManned 04.17.18

Airborne 04.18.18

AMA Drone Report 04.19.18

Airborne 04.20.18

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-Unmanned 04.17.18: XPO 2018, Drone Broadcasts, Airbus Inspection Drone

Also: NZ AFB Drone Incident, Police UAVs, Inaugural Drone Boot Camp, Predator 5M Flight Hours This is it! THE major unmanned exposition of the year -- AUVSI XPONENTIAL 2018 starts >[...]

Airborne 04.20.18: Continental Jet-A Seminole, SWA Fallout, NYC NIMBY's Helo's

Also: Teamsters Talk Allegiant, Coleman Young Airport, Miracle Flights, IN Av Repair Biz Cleared Piper has selected the Continental Motors CD-170 compression ignition engine fueled>[...]

AMA Drone Report 04.19.18: AMA Leadership, FAA Reauthorization, Coachella

Also: New French Regs, Drone Boot Camp, Public Safety Drone Standards, DroneShield Protects NASCAR It’s a little bit sad and yet a bit cool to see AMA make an exciting change>[...]

Airborne/Barnstorming 04.23.18: We Can Do So Much Better...

I'll Admit It... We're A Mite Frustrated, But We're ALSO Not Quitting... Ever Comments/Analysis/News/Video by ANN CEO/Editor-In-Chief, Jim Campbell We've accomplished so much over >[...]

Aero-News: Quote of the Day (04.23.18)

“More general-aviation pilots and passengers die from accidents involving loss of control in flight than any other single factor. Our goal is for these experts to discuss sol>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2018 Web Development & Design by Pauli Systems, LC