Transport Airplane Directorat e 1601 Lind Avenue, S.W. Renton, W ashington 98057 - 3356 February 7 , 2013 Mr. Jonathan Moritz Delta Engineering 1 3 DRBA Way New Castle, DE 19720 Dear Mr. Moritz: This is in reference to yo ur November 7 , 2012, petition for exemption from Title 14, Code of Federal Regulations (14 CFR) 21.11(b), for approval of electrical wiring interconnection sy stems (EWI S) Instructions for Continued Airworthiness (I CA) and/or assessments. Upon further review of your petition we note that it requests an exemption from § 26.11(b). However, § 2 6 .11(b) is not applicable t o Delta Engineering, because § 26 .11(b) only applies to “Holders of, and applicants for, t ype certificates, ” as identified in paragraph (d) of this section . Delta Engineering is neither a holder of , n or an applicant for, a type certificate. Therefore § 2 6 .11(b) does apply to Delta Engineering and we cannot process an exemption requested based on this fact. Therefore, we ask that yo u withdraw your petition for exemption or modify it to identify which 14 CFR section from which you wish to seek an exempt ion. For 14 CFR 26, Subpart B - Enhanced Airworthiness Program for Airplane Sy stems, § 26.11(c) applies to applicant s seeking either amended or supplemental ty pe certificate s . Please submit your withdrawal or yo ur modified petition to Department of Transp ortation’s Federal Docket Management Sy stem (Docket No. FAA - 2012 - 1209). If you choose to modify your request, please refer to 14 CFR 11.81 for instructions regarding the information you must include in yo ur petition for exemption to allow us to process yo ur request. Take particular note of items listed below, as these items were either missing or not adequately addressed in your original request.
 The specific sections of 14 CFR from which you seek an exemption.
 The extent of relief you seek and the reas ons for seeking the relief.  The reasons wh y granting your request would b e in the public interest; that is, how it would benefit the public as a whole.2

 The reason wh y granting the exemption would no t adversel y affect safet y, or how the exemption would p rovide a level of safet y at least equal to that provided by the rule from which you seek exemption.
 A summary

we can publish in the Federal Register stating the rule from which you seek the exemption and a brief description of the nature of the exemption you seek. You may also want to include the following:
 Any

additional information, views, or arguments to support your request, and
 If you want to exercise the privileges of your exemption outside the United States, the reason you need to do so. S ection 11.85 requires us to publish a summary of your petitions for exemption in the Federal Register for public comment. Section 11.87 allows you to present reasons, or the FAA to find good cause, why we should not delay action on your petitions by the p ublic comment process. Al so note that § 11.63 requires you to send petitions for exemption at least 120 day s before yo u need the exemption to take effect. We will hold the project open for 30 day s awaiting this information. If we do not receive a resp onse in 30 day s we will close the project with no further correspondence to you. Should you have any

questions or concerns regarding your petition or the petition process, please contact Stephen Slotte at 425 - 227 - 2315, or at steve.slotte@faa.gov . Sincerel y, / Original signed by Paul Bernado Paul Bernado Acting Manager , Airplane and Flight Crew Interface Branch, ANM - 111