Discussion
We issued AD 2018-03-15, Amendment 39-19188 (83 FR 6110; February 13, 2018) (``AD 2018-03-15''). That AD required actions intended to address an unsafe condition on Pacific Aerospace Limited Model 750XL airplanes and was based on mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country.
Since we issued AD 2018-03-15, it has been found that an optional SCAT hose configuration may be found fitted to certain airplanes, and instructions have been clarified on the installation of the self- adhesive mounts and the tape used on the SCAT hose.
The Civil Aviation Authority (CAA), which is the aviation authority for New Zealand, has issued CAA AD DCA/750XL/22A, dated February 28, 2018 (referred to after this as ``the MCAI''), to correct an unsafe condition for Pacific Aerospace Limited Model 750XL airplanes. The MCAI states:
This AD is prompted by two reports of finding abrasion damage behind
the instrument panel caused by ventilation hose chafing. This [CAA] AD supersedes DCA/750XL/22 to introduce Pacific Aerospace Limited Mandatory Service Bulletin (MSB) PACSB/XL/083 issue 2, dated 16 January 2018. There are no changes to the AD applicability. The PAL MSB revised to include an optional scat hose configuration which may be found fitted to certain aircraft, to clarify that the self- adhesive mounts should be attached directly to the metallic surface, and recommend that 25mm wide 3M Scotch 27 glass cloth tape is used to wrap the scat hose.
You may examine the MCAI on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-0372.
Related Service Information Under 1 CFR Part 51
Pacific Aerospace Limited has issued Pacific Aerospace Mandatory Service Bulletin PACSB/XL/083, Issue 2, dated January 16, 2018. The service information describes procedures for inspecting the ventilation SCAT hose behind the instrument panel, wrapping the ventilation hose with anti-abrasion tape, and rerouting the hose. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section of the AD.
FAA's Determination and Requirements of the AD
This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with this State of Design Authority, they have notified us of the unsafe condition described in the MCAI and service information referenced above. We are issuing this AD because we evaluated all information provided by the State of Design Authority and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design.
FAA's Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of thisAD. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because chafing of the ventilation hose on instrument components and wiring could cause abrasion damage and lead to a short circuit, smoke, and/or inflight fire. Therefore, we determined that notice and opportunity for public comment before issuing this AD are impracticable and that good cause exists for making this amendment effective in fewer than 30 days.
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Comments Invited
This AD is a final rule that involves requirements affecting flight safety, and we did not precede it by notice and opportunity for public comment. We invite you to send any written relevant data, views, or arguments about this AD. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2018-0372; Directorate Identifier 2018-CE-011-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all comments received by the closing date and may amend this AD because of those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this AD.
Costs of Compliance
We estimate that this AD will affect 22 products of U.S. registry. We also estimate that it would take about 1 work-hour per product to comply with the basic requirements of this AD. The average labor rate is $85 per work-hour.
Based on these figures, we estimate the cost of the AD on U.S. operators to be $1,870, or $85 per product.
In addition, we estimate that any necessary follow-on actions would take about 2 work-hours with parts costing $90, for a cost of $260 per product. The extent of abrasion damage could vary from airplane to airplane. We have noway of knowing how many airplanes may have abrasion damage or the extent of that damage to determine the cost of any necessary repair/replacement.
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 thisrulemaking action.
This AD is issued in accordance with authority delegated by the Executive Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to small airplanes, gliders, balloons, airships, domestic business jet transport airplanes, and associated appliances to the Director of the Policy and Innovation Division.
Regulatory Findings
We determined that this AD will not have federalism implications under Executive Order 13132. This AD will 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 this AD:
(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),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.