AD: The Boeing Company Airplanes | 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

Tue, Dec 20, 2016

AD: The Boeing Company Airplanes

AD NUMBER: 2016-25-02

PRODUCT: Certain Boeing Model 787-8 airplanes.

ACTION: Final Rule

SUMMARY:  This AD was prompted by reports of the accumulation of very fine particle deposits in the power control unit (PCU) electro-hydraulic servo valves (EHSVs) used in the flight control system; this accumulation caused degraded performance due to reduced EHSV internal hydraulic supply pressures, resulting in the display of PCU fault status messages from the engine indication and crew alerting system (EICAS).

This AD requires installing markers to limit the hydraulic system fluid used to a specific brand, doing hydraulic fluid tests of the hydraulic systems, replacing hydraulic system fluid if necessary, and doing all applicable related investigative and corrective actions.

The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective January 20, 2017.

FMI: AD

Advertisement

More News

ANN's Daily Aero-Term (05.29.25): Terminal Radar Service Area

Terminal Radar Service Area Airspace surrounding designated airports wherein ATC provides radar vectoring, sequencing, and separation on a full-time basis for all IFR and participa>[...]

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>[...]

Airborne 05.23.25: Global 8000, Qatar B747 Accepted, Aviation Merit Badge

Also: Virtual FLRAA Prototype, IFR-Capable Autonomous A/C, NS-32 Crew, Golden Dome Missile Defense Bombardier announced that the first production Global 8000 successfully completed>[...]

ANN's Daily Aero-Linx (05.30.25)

Aero Linx: The 1-26 Association (Schweizer) The Association’s goal is to foster the helpfulness, the camaraderie, and the opportunity for head-to-head competition that is fou>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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