Emergency AD: MDHC | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Most Recent Daily Airborne

Airborne On ANN

Airborne On YouTube/Hi-Def/Mac Friendly

Monday

Airborne 01.26.15

Airborne 01.26.15

Tuesday

Airborne 01.27.15

Airborne 01.27.15

Wednesday

Airborne 01.28.15

Airborne 01.28.15

Thursday

Airborne 01.29.15

Airborne 01.29.15

Friday

Airborne 01.23.15

Airborne 01.23.15

Thu, Apr 17, 2003

Emergency AD: MDHC

AD NUMBER: PL2003-08-51
MANUFACTURER: MDHC
SUBJECT: Airworthiness Directive PL2003-08-51
SUMMARY: This Emergency Airworthiness Directive (EAD) covering certain Model 369 and 500 helicopters is prompted by two reports of cracked tail rotor blade pitch horns (pitch horns) that failed during flight. In both occurrences, the pilot was able to land the helicopter without further incident. Investigation revealed that the cause of the failures was a fatigue crack in the pitch horns that developed before the tail rotor blade reached its retirement life. This condition, if not corrected, could result in a pitch horn separating from the tail rotor blade leading to an unbalanced condition, vibration, loss of tail rotor pitch control, and loss of directional control of the helicopter. This unsafe condition is likely to exist or develop on other helicopters of the same type designs. Therefore, this EAD requires, before further flight, reducing the retirement life of certain tail rotor blades from 5,140, 5,200, or 10,000 hours time-in-service (TIS) to 400 hours TIS, performing a onetime visual inspection of each pitch horn for a crack or corrosion, and replacing unairworthy tail rotor blades with airworthy tail rotor blades. This EADalso requires revising the Airworthiness Limitations section of the helicopter maintenance manual to reflect the reduced retirement life, and reporting information to the FAA within 24 hours following the one-time inspection.

FMI: www.avantext.com/DailyADIndex.ASP?AD=PL20030851

Advertisement

More News

AeroSports Update: Discovery XL-2 Production Is Underway

Discovery Aviation Announced That Production Of The New Discovery XL-2 Has Started If you are looking for a newly manufactured 2-place airplane suitable for the private owner or fo>[...]

Airborne 01.28.15: AMA Steps Up, AirAsia Stall Warnings, Obama Wants Carbon Cuts

Also: Ridiculous Arkansas Regs Proposed, Tecnam Juggernaut, New EC135 T2+ Training Helo, NBAA Joins 'Know Before You Fly', Wipaire Grand Opening, AirVenture SkyDive Record As the m>[...]

Airborne 01.28.15: AMA Steps Up, AirAsia Stall Warnings, Obama Wants Carbon Cuts

Also: Ridiculous Arkansas Regs Proposed, Tecnam Juggernaut, New EC135 T2+ Training Helo, NBAA Joins 'Know Before You Fly', Wipaire Grand Opening, AirVenture SkyDive Record As the m>[...]

Piper Aircraft Launches M500 With Latest Garmin Avionics

Caldecott Says New Meridian Features Electronic Stability Protection, Underspeed Protection, Other Safety Improvements Piper Aircraft has introduced its newest top-of-the-line M-Cl>[...]

Airborne 01.27.15: USCG Rescue!, Two Eagles Over Pacific, UAV v White House

Also: Hartzell/Red Bull, GA Coalition, Aero-Calendar, Commemorative Air Force, Sarah Brightman To ISS, Hot Air Balloon Endurance Record The pilot of a single engine Cirrus SR22 air>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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