FAA's Determination and Requirements of the Proposed AD

We are proposing this AD because we evaluated all information and determined the unsafe condition described previously is likely to exist or develop on other products of the same type design. This proposed AD would require you to inspect the left propeller accumulator oil tube assembly for any chafing; replace the propeller accumulator oil tube assembly if any chafing is found; and reposition and secure with clamps the left manifold pressure hose and its metal identification tags to ensure clearance between it and all tubes, hoses, electrical wires, parts, components, and structure.
[[Page 60925]]

Costs of Compliance

We estimate that this proposed AD would affect 49 airplanes in the U.S. registry.

We estimate the following costs to do the proposed inspection: Total cost per Total cost on Labor cost Parts cost airplane U.S. operators 1 workhour x $80 per hour = $80........... N/A.......................... $119 $5,831

We estimate the following costs to do any necessary replacements that would be required based on the results of the proposed inspection. We have no way of determining the number of airplanes that may need this replacement:
Total cost per Labor cost Parts cost airplane 1 workhour x $80 per hour = $80.......... $39 $119

RAC will provide warranty credit as specified in RAC Mandatory Service Bulletin No. SB 613806, issued: August 2006.

Authority for this Rulemaking

Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority.

We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.

Regulatory Findings

We have determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government.

For the reasons discussed above, I certify that the proposed regulation:

1. Is not a ``significant regulatory action'' under Executive Order 12866;

2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and

3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD and placed it in the AD docket. Examining the AD Docket

You may examine the AD docket that contains the proposed AD, the regulatory evaluation, any comments received, and other information on the Internet at http://dms.dot.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone (800) 6475227) is located at the street address stated in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment

Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new AD: Raytheon Aircraft Company: Docket No. FAA200625739; Directorate Identifier 2006CE46AD.
Comments Due Date
(a) We must receive comments on this airworthiness directive (AD) action by December 18, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Models 58 and G58 airplanes, serial numbers TH2097 through TH2150, with optional propeller
unfeathering accumulators installed, that are certificated in any category.
Unsafe Condition
(d) This AD results from several reports on the affected airplanes of chafing damage on the left propeller accumulator oil tube assembly. This includes an inflight oil leak from the left engine on an RAC Model G58 airplane.We are issuing this AD to detect, correct, and prevent any chafing damage of the left propeller accumulator oil tube assembly, which could result in loss of engine oil. Loss of engine oil may lead to fire or smoke in the engine compartment, inability to unfeather the propeller, engine damage, or loss of engine power.
Compliance
(e) To address this problem, you must do the following, unless already done:
[[Page 60926]]
Actions Compliance Procedures (1) Inspect the left For airplanes that Follow Raytheon propeller accumulator oil have not had a 100 Aircraft Company tube assembly for chafing. hour TIS inspection Mandatory Service or the inspection Bulletin No. SB 61 following Raytheon 3806, issued: Safety August 2006. Communiqu[eacute]
No. 271, dated May
2006: Within the
next 25 hours TIS
after the effective
date of this AD.
For airplanes that
have had a 100hour
TIS inspection or
the inspection
following Raytheon
Safety
Communiqu[eacute]
No. 271, dated May
2006: Within the
next 50 hours TIS
after the effective
date of this AD.
(2) If any chafing is found Before further Follow Raytheon in the inspection required flight after the Aircraft Company by paragraph (e)(1) of this inspection required Mandatory Service AD, replace the propeller by paragraph (e)(1) Bulletin No. SB 61 accumulator oil tube of this AD. 3806, issued: assembly. August 2006. (3) Reposition and secure Before further Follow Raytheon with clamps the left flight after the Aircraft Company manifold pressure hose and inspection or Mandatory Service its metal identification replacement Bulletin No. SB 61 tags to ensure clearance required in 3806, issued: between it and all tubes, paragraphs (e)(1) August 2006. hoses, electrical wires, and (e)(2) of this
parts, components, and AD.
structure.
Alternative Methods of Compliance (AMOCs)
(f) The Manager, Wichita Aircraft Certification Office (ACO), FAA, ATTN: Jeff Pretz, Aerospace Engineer, Wichita ACO, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946 4153; facsimile: (316) 9464407, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19.
Related Information
(g) To get copies of the service information referenced in this AD, contact Raytheon Aircraft Company, 9709 E. Central, Wichita, Kansas 672010085; telephone: (800) 4295372 or (316) 6763140. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL401, Washington, DC, or on the Internet at http://dms.dot.gov. The docket number is Docket No. FAA200625739;

Directorate Identifier 2006CE46AD.

Issued in Kansas City, Missouri, on October 10, 2006. Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E617188 Filed 101606; 8:45 am]
BILLING CODE 491013P

FOR FURTHER INFORMATION CONTACT

Jeff Pretz, Aerospace Engineer, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 9464153; facsimile: (316) 9464407.