AD: Boeing | 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-07.21.25

Airborne-Unlimited-07.22.25

AirborneUnlimited-07.23.25

Airborne-Unlimited-07.24.25

AirborneUnlimited-07.25.25

Sun, Oct 04, 2009

AD: Boeing

AD NUMBER: 2009-20-12

MANUFACTURER: Boeing Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, and 747SR Series Airplanes
SUBJECT: Airworthiness Directive 2009-20-12

SUMMARY: This AD requires replacing the inboard trailing edge (TE) flap transmission carbon disk no-back brakes with skewed roller no-back brakes at the TE flap transmission, positions 4 and 5. This AD results from reports of the inboard TE flaps blowing back due to the failure of a transmission carbon disk no-back brake. The no-back brake did not hold the TE flaps in the commanded position. We are issuing this AD to prevent a decrease of the aerodynamic controllability of the airplane, which could adversely affect the airplane's continued safe flight and landing.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/3CBC612D0BD87CB38625764200521503?OpenDocument

Advertisement

More News

Airborne 07.22.25: MOSAIC Released!, Able Flight, SUN n FUN 26

Also: Airbus Acubed Wayfinder FlightLab, Lightspeed Zulu 4, Pelton On Issues Plaguing GA For the better part of a decade and certainly before the last several years in particular, >[...]

Airborne 07.23.25: VoltAero, Bud Anderson Remembered, WomenVenture, Beta

Also: Wing Delivers, Stralis/Aviate Enterprises, EAA’s Youth Programs, EAA’s Impressive Museum And Aircraft Collection VoltAero’s HPU 210 hybrid propulsion unit i>[...]

ANN's Daily Aero-Term (07.26.25): Downburst

Downburst A strong downdraft which induces an outburst of damaging winds on or near the ground. Damaging winds, either straight or curved, are highly divergent. The sizes of downbu>[...]

ANN's Daily Aero-Linx (07.26.25)

Aero Linx: Air Charter Safety Foundation (ACSF) The Air Charter Safety Foundation is a 501c3 non-profit organization. Founded in 2008, our mission is to lead and support the advanc>[...]

Airborne 07.24.25: Spirit SE-1!, H55 eFlyer, King Schools

Also: Centauri Aircraft Valkyrie, Meet the Admin, Night Airshow, Pelton Intv'w When we laid eyes on this critter, we fell in love… and then we learned the amazing story of t>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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