Description
The MS21266-1F is a genuine Textron Aviation grommet plastic edging used to keep a joint or pass-through tight.
Material and dimensions make a seal work; the correct factory part is what keeps the joint from leaking in service. Using the factory part number preserves configuration control, so the airframe stays consistent with its approved type design and the work is straightforward to sign off at inspection.
Confirm fitment against your airframe's parts data — effectivity, modifications, and supersessions all affect which number applies. Genuine factory parts carry the documentation and traceability that maintenance and airworthiness records depend on — assurance a look-alike substitute cannot provide.
Cross-check the part number against your maintenance and parts documentation to confirm fit and current effectivity for your airframe. Sourcing the OEM part protects the airframe's configuration and keeps its service history consistent, which matters for both airworthiness and resale value.
Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application. Choosing the genuine article over an unapproved part keeps mechanics' sign-offs clean and the aircraft's configuration exactly as certificated.
Textron Aviation supports aircraft owners, operators, and MROs worldwide with genuine Cessna and Beechcraft parts from Wichita, Kansas.
Flying411 can help you source MS21266-1F — request a quote to get started.
