Use of DER Repair Alterations

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Use of DERRepair / Alterations STC

• Mike Heusser, ACE-115N
• Peter Pupator, ACE-115N
• Mark Wilson, AAL-235

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Training Objective

• Familiarize the AP and I/A community with the
  use of DERs.
• Discuss the common pitfalls of DER usage.

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Designated Engineering Representative (DER)

• If the applicant employs an appropriately
  authorized DER to provide supporting data the IA
  should coordinate activities with both the
  applicant and the DER.
• If the data addresses the entire alteration or
  repair, and all of the requirements of part
  21/23/25/27/29 and 43 are met, there is no
  requirement for further approval by the ASI.
• FAA Order 8110.37, Designated Engineering
  Representative Guidance Handbook
• FAA Order 8110.45, Use of data approved by DER to
  Support Major Alterations
• AC 183.29-1, DER Directory
• Or contact DER Appointing ACO.

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TYPES OF DESIGNATIONS

• Special (or Limited) Delegations or
  Authorizations
• Administrative or Management
• Major Repair Alteration
• PMA Identicality
• Special Authorization

• Structural
• Powerplant
• Systems Equipment
• electrical
• mechanical
• Radio
• Engine
• Propeller
• Flight Analyst
• Flight Test Pilot
• Acoustical

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DER AUTHORIZATION

• DERs are
• authorized to approve data.
• not authorized to approve an installation on an
  aircraft or return an aircraft to service.
• DER approval indicates that the data complies
  with the applicable certification regulations,
  within the DERs limitations.

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DER INFORMATION, cont.

• Anchorage ACO maintains a document listing DERs
  from outside Alaska who would like to do work in
  Alaska, including their contact information and
  delegated functions and authority
• See handout.
• Special Alteration Authority DERs (being
  developed)
• Based on experience and not education.
• Of a limited type and scope.
• Alteration Checklists (being developed)
• Presented as Training aids and subject to change.
• Requires YOUR input on specific alterations.
• AC 23-XX will be published in Federal
  Register.(goal-12/2003)
• Eventually turned into National guidance
  material.

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USE OF DERs FOR MAJOR REPAIR OR ALTERATION

• To approve data related to major repairs or
  alterations, the DER must have a special
  delegation from the ACO.
• Ask to see their appointment letter, which will
  state that they have the authority to approve
  data in support of major repairs, major
  alterations, or both.
• A DER may be authorized one-time authority to
  approve data in support of a major repair or
  alteration, from his/her appointing ACO. Must be
  noted on FAA Form 8110-3.

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SAMPLE FAA FORM 8110-3(issues to be aware of)

• Date and Make of Aircraft
• Name of Applicant
• Identification of Data
• Title
• Limitations of data
• Quote Registration No. (N ) AND Serial No.
  for possible changes to Reg. No. in future.

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SAMPLE FAA FORM 8110-3
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OTHER WAYS A DER CAN HELP

• Determinations of whether a modification requires
  an STC rather than field approval
• Putting together a compliance checklist, PSCP.
• Assist with design through his/her experience of
  details that make a design compliant or
  non-compliant
• Determining the appropriate regulations
• Witness tests
• Develop data system.

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Type of Data Required

• Drawing Sketches or Photos
• Reports, Analysis
• Test Plans / Reports
• Compliance Checklists
• Flight Manual Supplements
• Specification for materials or processes
• Maintenance Manuals (ICA)
• Parts Catalogs (IPC)

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WHERE TO GO FOR HELP

• Flight Standards Office
• Aircraft Certification OfficeAnchorage ACO
  271-2668
• Designated Engineering Representatives
• Original Equipment Manufacturer
• Aircraft Organizations (type clubs, other
  owners/mechanics, etc.)

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ONLINE RESOURCES

• MIL / AN / MS Specification
• http//assist.daps.dla.mil/online/start/ (goto
  quick search)
• CAM - CAR documents
• http//dotlibrary.specialcollection.net/
• DER DIRECTORY is maintained on the Internet
• http//av-info.faa.gov/dst/DERDirectory.pdf
• Aviation Regulation Home Page
• http//av-info.faa.gov/
• (TSO, STC listings, TCDS aircraft info, regulator
  guidance)

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USE OF DATA APPROVED BY DERs TO SUPPORT MAJOR
ALTERATIONS

• The person performing the alteration is
  responsible for certifying that the alteration
  was accomplished in accordance with 14 CFR.
• The DERs approving data for alterations must have
  special authority for major alterations.
• If you dont have all of the data required for
  showing compliance with all applicable
  regulations. A field approval or STC will be
  required.

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USE OF DATA APPROVED BY DERs TO SUPPORT MAJOR
ALTERATIONS

• If the alteration requires any of the following,
  you will most likely require a field approval or
  STC
• Flight Manual Supplement
• Changes to airworthiness limitations
• Ground and Flight tests plans
• Ground and Flight tests
• Compliance inspections
• Modifications to critical structure or life
  limited parts
• Instructions for continued airworthiness
• Special conditions
• Equivalent level pf safety findings