[Federal Register Volume 82, Number 219 (Wednesday, November 15, 2017)]
[Rules and Regulations]
[Page 52826]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-24742]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 21

[Docket No. FAA-2017-0851]


Airworthiness Criteria: Glider Design Criteria for DG Flugzeugbau 
GmbH Model DG-1000M Glider

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Airworthiness design criteria.

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SUMMARY: These airworthiness design criteria are for the DG Flugzeugbau 
GmbH model DG-1000M glider. The Administrator finds the design 
criteria, which make up the certification basis for the DG-1000M 
glider, acceptable.

DATES: These airworthiness design criteria are effective December 15, 
2017.

FOR FURTHER INFORMATION CONTACT: Mr. Jim Rutherford, AIR-692, Federal 
Aviation Administration, Policy & Innovation Division, Small Airplane 
Standards Branch, 901 Locust, Room 301, Kansas City, MO 64106, 
telephone (816) 329-4165, facsimile (816) 329-4090.

SUPPLEMENTARY INFORMATION: 

Background

    On May 18, 2011, DG Flugzeugbau GmbH submitted an application for 
type validation of the DG-1000M glider in accordance with the Technical 
Implementation Procedures for Airworthiness and Environmental 
Certification Between the FAA and the European Aviation Safety Agency 
(EASA), dated May 05, 2011. This model is a variant of the DG-1000T 
powered glider and will be added to existing Type Certificate No. 
G20CE. The model DG-1000M is a two-seat, mid-wing, self-launching, 
powered glider with a retractable engine and fixed-pitch propeller. It 
is constructed from carbon and glass fiber reinforced plastic, and 
features a conventional T-type tailplane. The glider also features a 
65.6 foot (20 meter) wingspan and a maximum weight of 1,742 pounds (790 
kilograms).
    The EASA type certificated the DG-1000M powered glider under Type 
Certificate Number (No.) EASA.A.072 on March 17, 2011. The associated 
EASA Type Certificate Data Sheet (TCDS) No. EASA.A.072 defines the DG 
Flugzeubau GmbH certification basis submitted to the FAA for review and 
acceptance.
    The applicable requirements for glider certification in the United 
States can be found in FAA Advisory Circular (AC) 21.17-2A, ``Type 
Certification--Fixed-Wing Gliders (Sailplanes), Including Powered 
Gliders,'' dated February 10, 1993. AC 21.17-2A has been the basis for 
certification of gliders and powered gliders in the United States for 
many years. AC 21.17-2A states that applicants may utilize the Joint 
Aviation Requirements (JAR)-22, ``Sailplanes and Powered Sailplanes,'' 
or another accepted airworthiness criteria, or a combination of both, 
as the accepted means for showing compliance for glider type 
certification.

Type Certification Basis

    The certification basis is based on JAR-22, amendment 6, dated 
August 01, 2001. In addition to JAR-22 requirements, the applicant will 
comply with other requirements from the certification basis referenced 
in EASA TCDS No. EASA.A.072, including an equivalent safety finding.

Discussion of Comments

    Notice of proposed airworthiness design criteria for the DG 
Flugzeugbau GmbH model DG-1000M glider was published in the Federal 
Register on September 21, 2017 (82 FR 44126). No comments were 
received; therefore, these airworthiness design criteria are adopted as 
proposed.

The Proposed Design Criteria

    Applicable Airworthiness Criteria under Sec.  21.17(b).
    Based on the Special Class provisions of Sec.  21.17(b), the 
following airworthiness requirements form the FAA Certification Basis 
for this design:
    1. 14 CFR part 21, effective February 1, 1965, including amendments 
21-1 through 21-92 as applicable.
    2. JAR-22, amendment 6, dated August 01, 2001.
    3. EASA Equivalent Safety Finding to JAR 22.207(c)--Stall warning. 
(FAA issued corresponding Equivalent Level of Safety (ELOS) Memorandum 
No. ACE-07-01A, dated April 02, 2012, as an extension to an existing 
ELOS finding).
    4. ``Standards for Structural Substantiation of Sailplane and 
Powered Sailplane Parts Consisting of Glass or Carbon Fiber Reinforced 
Plastics,'' Luftfahrt-Bundesamt (LBA) document no. I4-FVK/91, issued 
July 1991.
    5. ``Guideline for the analysis of the electrical system for 
powered sailplanes,'' LBA document no. I334-MS 92, issued September 15, 
1992.
    6. Operations allowed: VFR-Day, and ``Cloud Flying'' where ``Cloud 
Flying'' is considered flying in Instrument Meteorological Conditions 
(IMC) and requires an Instrument Flight Rules (IFR) clearance in the 
United States. This is permissible provided the pilot has the 
appropriate rating per 14 CFR 61.3, the glider contains the necessary 
equipment specified under 14 CFR 91.205, and the pilot complies with 
IFR requirements.
    7. EASA Type Certificate Data Sheet No. EASA.A.072, Issue 03, dated 
March 17, 2011.
    8. Date of application for FAA Type Certificate: May 18, 2011.

    Issued in Kansas City, Missouri, on November 8, 2017.
Pat Mullen,
Manager, Small Airplane Standards Branch, Aircraft Certification 
Service.
[FR Doc. 2017-24742 Filed 11-14-17; 8:45 am]
 BILLING CODE 4910-13-P


