Avionics News February 2012 - 19

Fatigue Tolerance Evaluation of Metallic Structures
On Dec. 2, 2011, the FAA published a final rule amending the airworthiness standards for fatigue tolerance evaluation of transport category rotorcraft metallic structures. This revises the FTE safety requirements to address advances in structural fatigue substantiation technology for metallic structures. This provides an increased level of safety by avoiding or reducing the likelihood of the catastrophic fatigue failure of a metallic

structure. The increased safety requirements will help ensure that if serious accidental damage occurs during manufacturing or within the operational life of the rotorcraft, the remaining structure could withstand, without failure, any fatigue loads likely to occur, until the damage is detected or the part is replaced. In addition to improving the safety standards for FTE of all principal structural elements, the amendment is harmonized with international standards.

FREQUENTLY ASKED QUESTIONS United States
Repair Station Manuals
The following information is from Federal Aviation Regulations Part 145 and AC 145-9. QUESTION: How descriptive does my repair station manual need to be? ANSWER: Descriptive enough. Keep in mind, when we commonly refer to “the” repair station manual, there actually are three separate manuals: the repair station manual; the quality control manual; and the repair station training program. Each manual is distinctly different, and this FAQ focuses on the RSM and QCM. The repair station manual is a reporting of the repair station infrastructure. It describes the repair station and its personnel structure. The content requirements are contained in §145.209, repair station manual contents. The requirements are very specific, but there are two action words: “procedures for” and “a description of.” The Merriam-Webster Dictionary defines a procedure as “a particular way of accomplishing something or of acting: or a traditional or established way of doing things.” It defines how we use procedure regarding an RSM/QCM; the repair station owner should describe their “particular way of accomplishing something” to the FAA. The quality control manual is a bit different. § 145.211 Quality control system first requires a “certificated repair station must establish and maintain a quality control system,” which ensures the airworthiness of the articles the repair station performs maintenance. Then, the regulation requires a repair station to “prepare and keep current a quality control manual.” The regulations again specify what must be included in the QCM. If the RSM defines the infrastructure, the QCM defines the repair station’s “processes.” Advisory Circular 145-9 defines an “acceptable means” of developing the RSM and QCM. Of course, the AC is guidance; however, it describes, in reasonably simple terms, the scope of the

description that should be included. For example, the regulations simply require that the RSM and the QCM contain procedures for revising the manual(s) and notifying the CHDO of revisions. The AC describes “what this means,” which is an acceptable means of meeting this requirement. Here is the checklist the AC shows: Regardless of the media used for the manual, the procedures for making revisions should include: 1. Who, by title, is responsible for making revisions? 2. Who will submit revisions to the FAA for review and acceptance? 3. How will the repair station incorporate changes to revisions found not acceptable to the FAA, which do not conform to applicable regulations? 4. How will the repair station correct any maintenance/administrative actions performed under revisions found not acceptable to the FAA? 5. How will the revisions be distributed and made available within electronic systems, and how will the FAA receive its revisions? 6. Accountability – how will the facility ensure that each manual holder or designated location receives each revision? 7. Identification of each revision to the text on each affected page. For example, a vertical bar in the margin or other suitable method may indicate the revised portion of text. So, while the regulations allow an individual to tell the FAA their “particular way of accomplishing” a required task, the AC itemizes what should be included in the process. Each description required in the repair station manuals should include: the who, what, when, where and how or who is responsible; what is required; when it will be accomplished; where the records will be kept; and how it will be done (the process). Repair stations are reminded that “the regulations do not require FAA review and acceptance of revisions before implementation, provided the repair station follows the revision procedures in its manual. The repair station should have a procedure in its manual to recall revisions if the FAA finds a revision unacceptable” (AC 145-9, 2-1. b. note).
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Table of Contents for the Digital Edition of Avionics News February 2012

Point of Communication
AEA Now
The View From Washington
International News and Regulatory Updates
Help for See-and-Avoid Aviating
Member Profile
Demonstrated Ability
Before & After
Retrofitting for RNP
A Conversation With...
What Will Economic Recovery Look Like?
Meet the AEA Staff
Member Profile
Look Mom, No Hands!
Business Basics
Pro-to-col
Theory & Practice
Special Report
What's New
Marketplace Classifies
Avionics News February 2012 - Cover1
Avionics News February 2012 - Cover2
Avionics News February 2012 - 1
Avionics News February 2012 - 2
Avionics News February 2012 - 3
Avionics News February 2012 - Point of Communication
Avionics News February 2012 - 5
Avionics News February 2012 - AEA Now
Avionics News February 2012 - 7
Avionics News February 2012 - 8
Avionics News February 2012 - 9
Avionics News February 2012 - 10
Avionics News February 2012 - 11
Avionics News February 2012 - 12
Avionics News February 2012 - 13
Avionics News February 2012 - 14
Avionics News February 2012 - 15
Avionics News February 2012 - The View From Washington
Avionics News February 2012 - 17
Avionics News February 2012 - International News and Regulatory Updates
Avionics News February 2012 - 19
Avionics News February 2012 - Help for See-and-Avoid Aviating
Avionics News February 2012 - 21
Avionics News February 2012 - 22
Avionics News February 2012 - 23
Avionics News February 2012 - 24
Avionics News February 2012 - 25
Avionics News February 2012 - Member Profile
Avionics News February 2012 - 27
Avionics News February 2012 - 28
Avionics News February 2012 - 29
Avionics News February 2012 - Demonstrated Ability
Avionics News February 2012 - 31
Avionics News February 2012 - 32
Avionics News February 2012 - 33
Avionics News February 2012 - Before & After
Avionics News February 2012 - 35
Avionics News February 2012 - Retrofitting for RNP
Avionics News February 2012 - 37
Avionics News February 2012 - 38
Avionics News February 2012 - 39
Avionics News February 2012 - A Conversation With...
Avionics News February 2012 - 41
Avionics News February 2012 - What Will Economic Recovery Look Like?
Avionics News February 2012 - 43
Avionics News February 2012 - 44
Avionics News February 2012 - 45
Avionics News February 2012 - 46
Avionics News February 2012 - 47
Avionics News February 2012 - Meet the AEA Staff
Avionics News February 2012 - 49
Avionics News February 2012 - 50
Avionics News February 2012 - 51
Avionics News February 2012 - Member Profile
Avionics News February 2012 - 53
Avionics News February 2012 - 54
Avionics News February 2012 - 55
Avionics News February 2012 - Look Mom, No Hands!
Avionics News February 2012 - 57
Avionics News February 2012 - 58
Avionics News February 2012 - 59
Avionics News February 2012 - Business Basics
Avionics News February 2012 - 61
Avionics News February 2012 - 62
Avionics News February 2012 - 63
Avionics News February 2012 - Pro-to-col
Avionics News February 2012 - 65
Avionics News February 2012 - 66
Avionics News February 2012 - 67
Avionics News February 2012 - Theory & Practice
Avionics News February 2012 - 69
Avionics News February 2012 - Special Report
Avionics News February 2012 - 71
Avionics News February 2012 - 72
Avionics News February 2012 - 73
Avionics News February 2012 - What's New
Avionics News February 2012 - 75
Avionics News February 2012 - 76
Avionics News February 2012 - 77
Avionics News February 2012 - Marketplace Classifies
Avionics News February 2012 - 79
Avionics News February 2012 - 80
Avionics News February 2012 - Cover3
Avionics News February 2012 - Cover4
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