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& 

U,S, Department 

of Transportation 

Federal Aviation 

Administration 

Small Airplane Directorate 

901 Locust 

Kansas City. MO 64106 

mR 9 

Mr. Eric Leaver 

Prograj;!! Manager/Administrative DER 

Cub Crafters, Inc. 

1918 S. 16'^ Avenue/P.O- Box 9823 

Yakima, WA 98903 

Dear Mr. Leaver: 

We are enclosing a grant of your petition submitted on November 13, 2009, requesting an 

exemption from the requirements of 14 CFR part 23, §§ 23.5(52. The exemption allows Cub 

Crafters to obtain a type certificate on the Cub Crafters model CC18-181 airplanes vvith 

seats that have not shown compliance with the emergency landing dynamic conditions of 14 

CFR part 23, § 23.562, effective at Amendment level 23-50. If you have any questions, 

please contact Mr. Les Taylor at the above address or call him on 816-329-4134. 

Sincerely, 

Kim Smit 

Manager, Small Airplane Directorate 

Aircraft Certification Service 

Enclosure 
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Exemption No. 10016 

UNITED STATES OF AMERICA 

DEPARTMENT OF TRANSPO.RTATION 

FEDERAL AVL\TION ADMINISTRATION 

WASHINGTON, DC 20591 

In the matter of the petition of 

CUB CRAFTERS, INC 

for an exemption from § 23,562 

of Title 14, Code of 

Federal Regulations 

Regulatory Docket No. FAA-2009-1161 

GRANT OF EXEMPTION 

By letter dated November 13, 2009, Mr. Eric Leaver, Program Manager/DER, Cub 

Crafters, Inc., 1918 S. 16^^ Avenue, Yakima, WA 98903 petitioned the Federal Aviation 

Administration (FAA) on behalf of Cub Crafters, Inc. for an exemption from § 23.562 of 

Title 14, Code of Federal Regulations (14 CFR). The proposed exemption, if granted, would 

allow for type certification of the Model CC18-I81 aircraft with seats that have not shown 

compliance with the emergency landing dynamic conditions. Cub Crafters, Inc. proposes the 

use of static tests on the seats. 

The petitioner requests relief from the following regulation[s]: 

Section 23.562 prescribes, in pertinent part, that each seat/restraint for use in a normal, 

utility, or acrobatic category airplane successfully complete dynamic seat tests, or 

otherwise demonstrate each seat/restraint system by rational analysis supported by 

dynamic testSj under the test conditions named in § 23.562, paragraphs (b)(1) and 

(b)(2). 

The petitioner supports its request with the following information: 

The petitioner states Cub Crafters proposes the use of static tests on the seat and 

harnesses and to equip the aircraft with a four-point harness by using a Technical 

Standards Order (TSO), and that the low stall speed and low head impact is also 

justification for the exemption. 
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A summary of the petition was published in the Federal Register on January 22, 2010 

(75 FR 3783). No comments were received. 

The FAA's analysis is as follows: 

To obtain this exemption, the Petitioner must show, as required by § 1! .81, paragraphs 

(d) and (e), respectively, that (1) granting the request is in the public interest and (2) the 

exemption will not adversely affect safety, or that a level of safety will be provided that is 

equal to that provided by the rules from which exemption is sought. The FAA has previously 

granted similar exemptions on other types with stall speeds of 45 knots or less. The other 

exemptions also provided similar types of safety-enhancing, mitigating features. 

The FAA has accepted the information contained in the Petitioner's request for exemption, 

and agrees with the petitioner's arguments for no adverse safety effect: 

• A low stall speed of 45 knots or less resulting in lower impact kinetic energy 

than an aircraft with a 61 knot stall speed; 

• A seating system that is designed to the item of mass longitudinal load factor 

for a 170 pound occupant, which exceeds current part 23 requirements; 

• The use of a four-point harness; 

• A strike free head flail envelope; 

• A maximum occupant coimt of two. 

The FAA's Decision 

In consideration of the foregoing, I find that a grant of exemption is in the public interest and 

will not adversely affect safety. Therefore, under the authority contained in 49 U.S.C 

§ § 40113 and 44701, delegated to me by tihe Administrator (14 CFR 11.61), Cub Crafters, Inc. 

is granted an exemption from § 23.562 of the Federal Aviation regulations to the extent 

necessary to allow type certification of the Model CC18-181 airplane witliout an exact 

showing of compliance with requirements of § 23.562. For the CC18-181, this exemption is 

subject to the following conditions and limitations: 
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Conditions and Limitations 

1. Cub Crafters Model CC18-181 must maintain a stall speed of no more than 45 

knots when in the landing configuration. 

2, This exemption is limited to the Cub Crafters Model CC 18-181 as equipped with 

seats, restraints, attachments and other alterations, as described in the petitioner's 

request for exemption. Significant changes to any of tliese elements may require 

additional testing and substantiation. 

Issued in Kansas City, Missouri on March 9, 2010. 

Sandra J. Campoell 

Acting Manager, Small Airplane Directorate 

Aircraft Certification Service