Emergency AD: MDHC | 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 08.03.15

Airborne 08.04.15

Airborne 07.22.15

Airborne 07.23.15

Airborne 07.24.15

Airborne Hi-Def On YouTube

Airborne 08.03.15

Airborne 08.04.15

Airborne 07.22.15

Airborne 07.23.15

Airborne 07.24.15

EAA/ANN AirVenture Innovation Preview

AIP-#1 Vimeo

AIP-#2 Vimeo

AIP-Part 1 YouTube

AIP-Part 2 YouTube

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

Airborne 08.03.15: MH370 Evidence Mounts, NIMBYs Must Pay, R66 Police Helicopter

Also: 'New' Wright 'B' Flyer, HD Footage From Space, AMA Museum, NAAA UAV Safety, Waukegan Cancels, Sun Country Pilots, NASA Mars Orbiter The aircraft debris found on the coast of >[...]

Airborne 08.03.15: MH370 Evidence Mounts, NIMBYs Must Pay, R66 Police Helicopter

Also: 'New' Wright 'B' Flyer, HD Footage From Space, AMA Museum, NAAA UAV Safety, Waukegan Cancels, Sun Country Pilots, NASA Mars Orbiter The aircraft debris found on the coast of >[...]

A Whole Lot of OSH15 Awesome! 2015 EAA/ANN AirVenture Innovation Preview!

Get The Inside Details On THE Most Exciting NEW OSH15 Innovations And Product Announcements... in High-Def Aero-TV Video The staff of the Experimental Aircraft Association and the >[...]

Annual Oshkosh 2015 'Best/Worst Of' Award Selection Invites YOUR Participation!

YOU Can Contribute To The Annual List Compiled By The Staff and Readership of the ANN and Aero-TV! E-I-C Note: We're going to start naming names and dropping details in just a few >[...]

ANN's Daily Aero-Linx (08.04.15)

SATOP - Space Alliance Technology Outreach Program The Space Alliance Technology Outreach Program (SATOP) is a cooperative program between the states of Florida, New Mexico, New Yo>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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