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David Botich
Jan 21, 20212 min read
Do Experimental Aircraft need to comply with AD's and Airworthiness Limitations?
January, 2021 This question has come up in the past so I wanted to clarify this. Some people are under the impression that an aircraft...
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David Botich
Dec 23, 20202 min read
Turbine Operators Get Some Relief on Their Current Maintenance Program
March, 2009 The FAA released their legal interpretation of the word “current” as used in 14 CFR 91.409(f)(3). Here is the excerpt from...
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David Botich
Dec 23, 20202 min read
Parts Produced by an Owner or Operator. Are They Legal?
May, 2010 The answer to this question is yes, so long as that part meets certain criteria. This is a subject that has a very profound...
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David Botich
Dec 23, 20202 min read
When Is a Flight Manual Current?
June, 2011 I recently was asked if the Regulations required the operator to comply with a newly revised Aircraft Flight Manual Supplement...
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David Botich
Dec 23, 20203 min read
Checking the Torque on Critcal Engine Through-Bolts. How Important is This?
September, 2014 When you investigate aircraft accidents you get to learn some really important lessons. Usually by then it is a bit late....
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David Botich
Dec 23, 20203 min read
Can a Torqued Bolt Become Loose?
September, 2014 The answer to this question is, "Yes it can." But we need to qualify this answer. First lets eliminate the possibility of...
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![Rolls Royce 250 Series Gas Turbine Engine Failure Case Study](https://static.wixstatic.com/media/c5aa41_4e14b0dfbb8344a0a7195b026a40b9b6~mv2.jpg/v1/fill/w_454,h_341,fp_0.50_0.50,q_90,enc_auto/c5aa41_4e14b0dfbb8344a0a7195b026a40b9b6~mv2.webp)
David Botich
Dec 23, 202012 min read
Rolls Royce 250 Series Gas Turbine Engine Failure Case Study
October, 2014 The following article is based on an investigation and analysis of an aircraft accident of one Hughes 369D helicopter...
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David Botich
Dec 21, 20206 min read
Clarification on Supervising a Non-Certificated Person Working on Aircraft
December, 2020 Customers have asked me if they can perform work on their aircraft under my supervision and if I needed to be there to...
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