AD: MD 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-06.23.25

Airborne-NextGen-06.24.25

AirborneUnlimited-06.25.25

Airborne-AffordableFlyers-06.26.25

AirborneUnlimited-06.27.25

Fri, Mar 15, 2019

AD: MD Helicopters

AD NUMBER: 2019-05-04

PRODUCT: MDHI Model 369A, 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N helicopters.

ACTION: Final Rule.

SUMMARY:   This AD requires inspecting each main rotor blade (MRB) for a crack.

This AD was prompted by reports of cracked MRBs.

DATES: This AD is effective April 17, 2019.

COST: The FAA estimates that this AD affects 730 helicopters of U.S. Registry. Operators may incur the following costs in order to comply with this AD:

Labor costs are estimated at $85 per work-hour.

Inspecting one MRB requires about 0.1 work-hour, for an estimated cost per helicopter of $43 for the 705 MDHI Model 369-series and 500N helicopters (5 MRBs), $51 for the 25 MDHI Model 600N helicopters (6 MRBs), and a total estimated cost of $31,590 for the U.S. fleet per inspection cycle.

If required, replacing one MRB requires about 3 work-hours and parts cost about $13,000 for a total estimated cost of $13,255 per MRB.

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>[...]

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>[...]

NTSB Final Report: Capella Aircraft Corp FW1C50

Pilot Reported That He Was Unfamiliar With The Single Seat Amateur-Built Airplane And His Intent Was To Perform High-Speed Taxi Testing Analysis: The pilot reported that he was unf>[...]

Classic Aero-TV: Timber Tiger Touts Curtiss Jenny Replicas

From 2023 (YouTube Edition): First Kits to Ship October 2023 Having formerly resurrected the storied shape of the Ryan ST—in effigy, anyway—Montrose, Colorado-based Tim>[...]

ANN's Daily Aero-Term (07.04.25): Performance-Based Navigation (PBN) [ICAO]

Performance-Based Navigation (PBN) [ICAO] Area navigation based on performance requirements for aircraft operating along an ATS route, on an instrument approach procedure or in a d>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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