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Continental MSB23-01

15 Feb 2023

Air Power, Inc. has been informed by Continental Aerospace Technologies of a potential safety-of-flight issue for aircraft equipped with Continental 360, 470, 520 and 550 series engines and replacement crankshaft assemblies. Consequently, Continental has issued Mandatory Service Bulletin MSB23-01 and asked Air Power to distribute to our customers.

MSB23-01 requires:

  • Engines less than 200 operating hours:
    • Accomplish MSB23-01 immediately; an additional five flight hours acceptable to move to a maintenance facility with minimum essential crew, if necessary.
  • Engines with more than 200 operating hours:
    • No further action required.

The advice provided by Continental applies to new and rebuilt engines, along with replacement crankshaft assemblies, manufactured between June 1, 2021, and February 7th, 2023. A list of effected serial numbers is listed in Appendix 1 and 2 in MSB23-01.

Continental has established a dedicated telephone line and email address to field questions regarding this service document.

Direct Dial


Main Line

251-308-9100 Option 9


[email protected]

Air Power is proud to partner with Continental Aerospace Technologies. Continental has a long history of standing by their product. Continental has hired additional personnel to staff a call center between 0600 and 2100 Central Time. Expedited shipping is available at no cost to the owners. Additionally, Continental is providing additional generous labor amounts for service centers to accomplish this bulletin.


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