AD: Various Restricted Category Helicopters | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-05.19.25

Airborne-NextGen-05.20.25

AirborneUnlimited-05.21.25

Airborne-AffordableFlyers-05.22.25

AirborneUnlimited-05.23.25

Sat, Sep 15, 2012

AD: Various Restricted Category Helicopters

AD NUMBER: 2012-17-10

PRODUCT: Various restricted category Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P helicopters with certain main rotor (M/R) blade assemblies installed.
SUBJECT: Airworthiness Directive 2012-17-10
ACTION: Final Rule, Request for Comments

SUMMARY: This AD requires inspecting the grip plates, doublers, and upper and lower surfaces of the M/R blades in the area between blade stations 24.5 and 40 for an edge void, corrosion, or a crack. This AD is prompted by several reports of fatigue cracks on M/R blades installed on Bell Helicopter Textron, Inc. (Bell) Model 212 helicopters. These same part-numbered M/R blades may also be installed on certain FAA-approved modified restricted category helicopters.

These actions are intended to detect an edge void, corrosion, or a crack on an M/R blade, which could lead to loss of the M/R blade and subsequent loss of control of the helicopter.

DATES: This AD becomes effective September 28, 2012. The FAA must receive comments on this AD by November 13, 2012.

FMI: AD

Advertisement

More News

NTSB Prelim: Lee Aviation LLC JA30 SuperStol

A Puff Of Smoke Came Out From The Top Of The Engine Cowling Followed By A Total Loss Of Engine Power On May 9, 2025, about 1020 mountain daylight time, an experimental amateur-buil>[...]

Classic Aero-TV: Curtiss Jenny Build Wows AirVenture Crowds

From 2022 (YouTube Edition): Jenny, I’ve Got Your Number... Among the magnificent antique aircraft on display at EAA’s AirVenture 2022 was a 1918 Curtiss Jenny painstak>[...]

ANN's Daily Aero-Term (05.30.25): Very High Frequency (VHF)

Very High Frequency (VHF) The frequency band between 30 and 300 MHz. Portions of this band, 108 to 118 MHz, are used for certain NAVAIDs; 118 to 136 MHz are used for civil air/grou>[...]

Aero-News: Quote of the Day (05.30.25)

“From approximately November 2021 through January 2022, Britton-Harr, acting on behalf of AeroVanti, entered into lease-purchase agreements for five Piaggio-manufactured airc>[...]

ANN's Daily Aero-Term (05.31.25): Microburst

Microburst A small downburst with outbursts of damaging winds extending 2.5 miles or less. In spite of its small horizontal scale, an intense microburst could induce wind speeds as>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC