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 05.18.15

Airborne 05.26.15

Airborne 05.27.15

Airborne 05.21.15

Airborne 05.22.15

Airborne Hi-Def On YouTube

Airborne 05.18.15

Airborne 05.26.15

Airborne 05.27.15

Airborne 05.21.15

Airborne 05.22.15

 

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

Airborne 05.26.15: S-97 1st Flt, SpaceShipTwo Progress, CO NIMBYs Lose In Court

Also: Sprite UAV, Aero-Calendar, USAF Theater, Aussie F-35, ISS Hacked?, DuPage Airport, ND UAVs Innovation in vertical lift flight took place as Sikorsky Aircraft announced the su>[...]

Aero-Help Wanted: ANN Needs A Good Honest Marketing Manager

ANN/Aero-TV Marketing Department Needs Part or Full Time Personnel E-I-C Note: After months of hints, we've unveiled the beginnings of the 'Airborne Unlimited' project and we're ex>[...]

AeroSports Update: Jimmy StewartÂ’s Twin Cessna To Be Restored

Pennsylvania EAA Chapter To Restore The Actor's Cessna 310 Hollywood motion pictures can make heroes out of the most unlikely people, and we have certainly seen that in many poorly>[...]

ANN's Daily Aero-Linx (05.27.15)

Cockpit Footage TBM Avenger Emergency Landing Arsenal Of Democracy VE Day Flyover This is the Emergency Landing at DCA, Reagan National, of the Military Aviation Museum TBM Avenger>[...]

ANN's Daily Aero-Term (05.27.15): Negative

Contradicts a previous statement by the other speaker.>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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