AD: MD Helicopters Model MD900 | 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-06.23.25

Airborne-NextGen-06.24.25

AirborneUnlimited-06.25.25

Airborne-AffordableFlyers-06.26.25

AirborneUnlimited-06.27.25

Wed, Nov 09, 2011

AD: MD Helicopters Model MD900

AD NUMBER: 2011-22-08

MANUFACTURER: MD Helicopters, Inc. Model MD900 Helicopters
SUBJECT: Airworthiness Directive 2011-22-08
ACTION: Final rule

SUMMARY: This amendment supersedes an existing airworthiness directive (AD) that applies to MD Helicopters, Inc. (MDHI) Model MD900 helicopters. That AD currently requires turning ON both Vertical Stabilizer Control System (VSCS) switches and turning OFF the autopilot (AP/SAS) switch; pulling certain AP/SAS circuit breakers; installing a placard near the AP/SAS master switch; installing an airspeed limitation placard on the instrument panel; and making changes to the Rotorcraft Flight Manual (RFM).

This amendment retains those requirements and provides an option of replacing each affected tube adapter with a newly-designed tube adapter, which provides terminating action for the unsafe condition. This amendment is prompted by the manufacturer introducing an improved, newly-designed tube adapter. The actions specified by this AD are intended to prevent loss of yaw control and subsequent loss of control of the helicopter.

DATES: Effective December 13, 2011

FMI: AD

Advertisement

More News

NTSB Prelim: Piper PA-23

Pilot Also Reported That Due To A Fuel Leak, The Auxiliary Fuel Tanks Were Not Used On June 4, 2025, at 13:41 eastern daylight time, a Piper PA-23, N2109P, was substantially damage>[...]

ANN FAQ: Submit a News Story!

Have A Story That NEEDS To Be Featured On Aero-News? Here’s How To Submit A Story To Our Team Some of the greatest new stories ANN has ever covered have been submitted by our>[...]

Classic Aero-TV: One Man’s Vietnam

From 2023 (YouTube Edition): Reflections on War’s Collective Lessons and Cyclical Nature The exigencies of war ought be colorblind. Inane social-constructs the likes of racis>[...]

ANN's Daily Aero-Linx (07.03.25)

Aero Linx: Colorado Pilots Association (CPA) Colorado Pilots Association was incorporated as a Colorado Nonprofit Corporation in 1972. It is a statewide organization with over 700 >[...]

ANN's Daily Aero-Term (07.03.25): High Speed Taxiway

High Speed Taxiway A long radius taxiway designed and provided with lighting or marking to define the path of aircraft, traveling at high speed (up to 60 knots), from the runway ce>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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