Federal Register: January 2, 2001 (Volume 66, Number 1)
DOCID: FR Doc 00-33404
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
CFR Citation: 14 CFR Part 39
Docket ID: [Docket No. 2000-CE-67-AD]
RIN ID: RIN 2120-AA64
NOTICE: PROPOSED RULES
ACTION: Airworthiness directives:
DOCUMENT ACTION: Notice of proposed rulemaking (NPRM).
Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model P- 180 Airplanes
DATES: The Federal Aviation Administration (FAA) must receive any comments on this proposed rule on or before February 3, 2001.
This document proposes to adopt a new airworthiness directive (AD) that would apply to all PIAGGIO AERO INDUSTRIES S.p.A (PIAGGIO) Model P180 airplanes. The proposed AD would require you to inspect the flap actuators for incorrect maneuvering and evidence of grease and oxidation around the gear box (actuators with any of these conditions are referred to as problem actuators). If you find a problem actuator, the proposed AD would require you to immediately replace the flap actuators with improved design actuators or repair the existing actuators to the improved design level. If you do not find a problem actuator, the proposed AD would require you to repeat the inspection until the installed actuators are of improved design. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Italy. The actions specified by the proposed AD are intended to detect and remove problem flap actuators from service. Continued operation with problem actuators could result in flap system failure, with consequent reduction in, or loss of, control of the airplane.
PIAGGIO AERO INDUSTRIES S.p.A.,
How do I comment on the proposed AD? The FAA invites comments on this proposed rule. You may submit whatever written data, views, or arguments you choose. You need to include the rule's docket number and submit your comments in triplicate to the address specified under the caption ADDRESSES. The FAA will consider all comments received on or before the closing date. We may amend the proposed rule in light of comments received. Factual information that supports your ideas and suggestions is extremely helpful in evaluating the effectiveness of the proposed AD action and determining whether we need to take additional rulemaking action.
Are there any specific portions of the proposed AD I should pay attention to? The FAA specifically invites comments on the overall regulatory, economic, environmental, and energy aspects of the proposed rule that might suggest a need to modify the rule. You may examine all comments we receive before and after the closing date of the rule in the Rules Docket. We will file a report in the Rules Docket that summarizes each FAA contact with the public that concerns the substantive parts of the proposed AD.
We are reexamining the writing style we currently use in regulatory documents, in response to the Presidential memorandum of June 1, 1998. That memorandum requires federal agencies to communicate more clearly with the public. We are interested in your comments on whether the style of this document is clearer, and any other suggestions you might have to improve the clarity of FAA communications that affect you. You can get more information about the Presidential memorandum and the plain language initiative at http:// www.plainlanguage.gov.
How can I be sure FAA receives my comment? If you want us to acknowledge the receipt of your comments, you must include a self addressed, stamped postcard. On the postcard, write ``Comments to Docket No. 2000CE67AD.'' We will date stamp and mail the postcard back to you.
What events have caused this proposed AD? The Ente Nazionale per l' Aviazione Civile (ENAC), which is the airworthiness authority for Italy, recently notified FAA that an unsafe condition may exist on all PIAGGIO Model P180 airplanes. The ENAC reports incidents of malfunctions of the flap actuators. Investigation of these incidents reveals problems inside the gearbox of the outboard flap actuators. Investigation results indicate incorrect maneuvering of the flap system and evidence of grease and oxidation around the gear box.
What are the consequences if the condition is not corrected? Continued operation with problem actuators could result in flap system failure, with consequent reduction in, or loss of, control of the airplane.
Is there service information that applies to this subject? PIAGGIO has issued Mandatory Service Bulletin No. SB800120, Original Issue: July 20, 2000.
What are the provisions of this service bulletin? The service bulletin:
Includes procedures for inspecting the flap actuators for incorrect maneuvering and evidence of grease and oxidation around the gear box (actuators with any of these conditions are referred to as problem actuators);
Specifies replacing the flap actuators with improved design actuators in accordance with the instructions in the maintenance manual; and Specifies repairing the existing actuators to the improved design level in accordance with instructions received from Piaggio.
What action did ENAC take? The ENAC classified this service bulletin as mandatory and issued Italian AD Number N2000392, dated August 7, 2000, in order to assure the continued airworthiness of these airplanes in Italy.
Was this in accordance with the bilateral airworthiness agreement? These airplane models are manufactured in Italy and are type certificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement.
Pursuant to this bilateral airworthiness agreement, the ENAC has kept FAA informed of the situation described above.
The FAA's Determination and an Explanation of the Provisions of the Proposed AD
What has FAA decided? The FAA has examined the findings of the
ENAC; reviewed all available information, including the service information referenced above; and determined that:
The unsafe condition referenced in this document exists or could develop on other PIAGGIO Model P180 airplanes of the same type design; The actions specified in the previouslyreferenced service
information should be accomplished on the affected airplanes; and AD action should be taken in order to correct this unsafe condition.
What would the proposed AD require? This proposed AD would require you to:
Inspect the flap actuators for incorrect maneuvering and evidence of grease and oxidation around the gear box (actuators with any of these conditions are referred to as problem actuators);
If you find a problem actuator, immediately replace the flap actuators with improved design actuators or repair the existing actuators to the improved design level; and
If you do not find a problem actuator, repeat the inspection until you install improved design flap actuators.
How many airplanes would the proposed AD impact? We estimate that the proposed AD affects 11 airplanes in the U.S. registry.
What would be the cost impact of the proposed AD on owners/
operators of the affected airplanes? We estimate the following costs to accomplish the proposed inspection:
Total cost per Total cost on Labor cost Parts cost airplane operators 1 workhour x $60 per hour = $60...................... No parts required $60 $660 for the inspection
We estimate the following costs to accomplish 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 such repair/replacement:
Total cost per Labor cost Parts cost airplane 32 workhours x $60 per hour = $1,920 $8,000 per $9,920 airplane
Would this proposed AD impact various entities? The regulations proposed herein 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. Therefore, it is determined that this proposed rule would not have federalism implications under Executive Order 13132.
Would this proposed AD involve a significant rule or regulatory action? For the reasons discussed above, I certify that this proposed action (1) Is not a ``significant regulatory action'' under Executive Order 12866; (2) is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) if promulgated, 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. A copy of the draft regulatory evaluation prepared for this action has been placed in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the location provided under the caption ADDRESSES.
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 Federal Aviation Administration proposes to amend part 39 of the Federal Aviation Regulations (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. FAA amends Sec. 39.13 by adding a new airworthiness directive (AD) to read as follows:
Piaggio Aero Industries S.P.A.: Docket No. 2000CE67AD.
(a) What airplanes are affected by this AD? This AD affects Model P180 airplanes, all serial numbers, that are certificated in any category.
(b) Who must comply with this AD? Anyone who wishes to operate any of the above airplanes must comply with this AD.
(c) What problem does this AD address? The actions specified by this AD are intended to detect and remove problem flap actuators from service. Continued operation with problem actuators could result in flap system failure, with consequent reduction in, or loss of, control of the airplane.
(d) What actions must I accomplish to address this problem? To address this problem, you must accomplish the following:
Actions Compliance Procedures (1) Inspect the flap Upon accumulating In accordance with actuators for incorrect 600 hours timein the ACCOMPLISHMENT maneuvering and evidence of service (TIS) on INSTRUCTIONS grease and oxidation around the flap actuators section of the gear box (actuators or within the next Mandatory Service with any of these 100 hours TIS after Bulletin No. SB80 conditions are referred to the effective date 0120, Original as problem actuators). of this Ad, Issue: July 20, whichever occurs 2000.
(2) If you do not find any Within 100 hours TIS Accomplish the problem actuators, repeat after the replacement in the inspection until you inspection required accordance with the have either:. in paragraph (d)(1) instructions in the (i) replaced all flap of this AD and maintenance manual. actuators with part number thereafter at Accomplish the (P/N) C1541831 and C154184 intervals not to repair or 1 (or FAAapproved exceed 100 hours modification in equivalent part numbers) TIS. accordance with actuators; or. instructions (ii) repaired or modified received from the P/N C1322773 and Piaggio at the C1322774 (or FAAapproved address given in equivalent part numbers) to paragraph (h) of the P/N C1541831 and this AD. C1541841 design level.
(3) If you find problem Prior to further Accomplish the actuators during any flight after the replacement in inspection required by this inspection where accordance with the AD, immediately replace the you find a problem instructions in the flap actuators with P/N actuator. maintenance manual. C1541831 and C1541841 (or Accomplish the FAAapproved equivalent repair or part numbers); or repair to modification in the P/N C1541831 and accordance with C1541841 design level. instructions received from Piaggio at the address given in paragraph (h) of this AD. (4) Only install flap As of the effective Not applicable. actuators that are one of date of this AD.
(i) P/N C1541831 and
C1541841 (or FAAapproved
equivalent part numbers);
(ii) P/N C1322773 and
C1322774 (or FAAapproved
equivalent part numbers)
that have been repaired or
modified to the P/N C154183
1 and C1541841 design
(e) Can I comply with this AD in any other way? You may use an alternative method of compliance or adjust the compliance time if: (1) Your alternative method of compliance provides an equivalent level of safety; and
(2) The Manager, Small Airplane Directorate, approves your alternative. Submit your request through an FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Small Airplane Directorate.
Note 1: This AD applies to each airplane identified in paragraph
(a) of this AD, regardless of whether it has been modified, altered,
or repaired in the area subject to the requirements of this AD. For
airplanes that have been modified, altered, or repaired so that the
performance of the requirements of this AD is affected, the owner/
operator must request approval for an alternative method of
compliance in accordance with paragraph (e) of this AD. The request
should include an assessment of the effect of the modification,
alteration, or repair on the unsafe condition addressed by this AD;
and, if you have not eliminated the unsafe condition, specific actions you propose to address it.
(f) Where can I get information about any alreadyapproved alternative methods of compliance? Contact Roman Gabrys, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 3294141; facsimile: (816) 329 4090.
(g) What if I need to fly the airplane to another location to comply with this AD? The FAA can issue a special flight permit under sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate your airplane to a location where you can accomplish the requirements of this AD.
(h) How do I get copies of the documents referenced in this AD? You may obtain copies of the documents referenced in this AD from Piaggio Aero Industries S.p.A, Via Cibrario 4, 16154 Genoa, Italy. You may examine these documents at FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106.
Note 2: The subject of this AD is addressed in Italian AD N2000 392, dated August 7, 2000.
Issued in Kansas City, Missouri, on December 21, 2000. Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 0033404 Filed 122900; 8:45 am] BILLING CODE 491013P
FOR FURTHER INFORMATION CONTACT
Roman Gabrys, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 3294141; facsimile: (816) 3294090.