Summary
We are adopting a new airworthiness directive (AD) for certain Learjet, Inc. Models 28, 29, 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and 60 airplanes. This AD was prompted by fatigue cracks initiating in the flap support structure due to repetitive flap loads, which has caused flap nose roller support bracket failure. This AD requires replacement of the flap nose roller fitting, nose roller support bracket, and adjacent rib support structure with improved components. We are issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2018-0327
Document Number
2018-19853
Type
Rule
Publication Date
September 18, 2018
Effective Date
October 23, 2018
Affected Manufacturer
Learjet, Inc.
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2018-0327
Topics
Official Documents
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