Mandatory Bulletin Published for 2022 Continental 470, 520, 550 Rebuilds | 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-Wednesday Airborne-Thursday


Airborne On YouTube






Wed, Dec 14, 2022

Mandatory Bulletin Published for 2022 Continental 470, 520, 550 Rebuilds

Superior Millennium Cylinders May be Affected by Bad Intake Valves - Replacement Required! 

Owners of recently overhauled or repaired Continental 470-, 520- and 550-series engines should be on the lookout for the use of Superior Millennium Cylinders after the firm published a Mandatory Service Bulletin.

The issue lies with Superior brand intake valves, which have been found to be at risk of failure. The affected units have Superior Part Number SA539988, and were shipped between January 20, 2020, and February 23, 2022. The intake valves were used in both new Superior Millennium Cylinders and rebuilt or overhauled cylinders throughout this year, affecting the aforementioned Continental engines. 

 “We have found three instances where the valves have failed in service,” stated Bill Ross, VP of Product Support for Superior Air Parts. “Our overriding priority is always the safety of our customers and their aircraft. Therefore, after the required inspection, should an owner find that their aircraft has the affected intake valves installed, the aircraft is to be immediately grounded until the impacted cylinders can be replaced.” 

While undoubtedly inconvenient, Ross stressed the importance of contacting any shops involved in an overhaul of such engines - it's hard to be sure what parts were used in work done by 3rd-party cylinder repair facilities. Owners will have to affirm that the intake valves used in their rebuild are either not a Superior-branded part, or were manufactured outside of the affected serial range. 



More News

Classic Aero-TV: The Ultimate 'Solo' Trip -- Cameron Balloons' Sky Hopper

From 2011 (YouTube Version): A Unique, Affordable and Isolated way to Enjoy Ballooning Ballooning is both a unique as well as eclectic pursuit... and it attracts (naturally) a pret>[...]

Aero-News: Quote of the Day (07.14.24)

"Aviation in Alaska is essential to the transportation infrastructure. Many of our Alaskan customers rely on our products to access their homes, their communities, and run their bu>[...]

ANN's Daily Aero-Term (07.14.24): Approach Speed

Approach Speed The recommended speed contained in aircraft manuals used by pilots when making an approach to landing. This speed will vary for different segments of an approach as >[...]

ANN's Daily Aero-Linx (07.14.24)

Aero Linx: Japan Business Aviation Association (JBAA) The Japan Business Aircraft Association (JBAA) was established in May 1996 as an incorporated nonprofit organization (in April>[...]

ANN's Daily Aero-Term (07.15.24): Apron

Apron A defined area on an airport or heliport intended to accommodate aircraft for purposes of loading or unloading passengers or cargo, refueling, parking, or maintenance. With r>[...]

blog comments powered by Disqus





© 2007 - 2024 Web Development & Design by Pauli Systems, LC