<Li> Consultant DERs are appointed to act as independent DERs to approve, or recommend the FAA approves, technical data produced by any person or organization . </Li> <P> A DAR is an individual appointed in accordance with 14 CFR 183.33 who may perform examination, inspection, and testing services necessary to the issuance of certificates . There are two types of DARs: manufacturing, and maintenance . </P> <Ul> <Li> Manufacturing DARs must possess aeronautical knowledge, experience, and meet the qualification requirements of Order 8100.8 . </Li> <Li> Maintenance DARs must hold: <Ol> <Li> a mechanic's certificate with an airframe and powerplant rating under 14 CFR part 65, Certification: Airmen Other Than Flight Crewmembers, or </Li> <Li> a repairman certificate and be employed at a repair station certificated under 14 CFR part 145, or an air carrier operating certificate holder with an FAA - approved continuous airworthiness program, and must meet the qualification requirements of Order 8100.8, Chapter 14 . </Li> </Ol> </Li> </Ul> <Li> Manufacturing DARs must possess aeronautical knowledge, experience, and meet the qualification requirements of Order 8100.8 . </Li>

Which of the following offices is the central office for pilot and other faa certifications