Source: http://www.thefederalregister.com/d.p/2005-09-07-05-17670
Timestamp: 2013-05-25 20:44:33
Document Index: 248748011

Matched Legal Cases: ['art 7114', 'art 3944', 'art 6726', 'art 140', 'art 5250', 'art 1739', 'art 30206', 'art 514', 'art 9740', 'art 180']

14 CFR Part 7114 CFR Part 3944 CFR Part 6726 CFR Part 140 CFR Part 5250 CFR Part 1739 CFR Part 30206 CFR Part 514 CFR Part 9740 CFR Part 180	Federal Register: September 7, 2005 (Volume 70, Number 172)
DOCID: FR Doc 05-17670
Docket ID: [Docket No. FAA-2005-22321; Directorate Identifier 2005-NM-123-AD]
SUBJECT CATEGORY: Airworthiness Directives; Boeing Model 767-200 and -300 Series Airplanes DATES: We must receive comments on this proposed AD by October 24, 2005.
DOCUMENT SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 767200 and 300 series airplanes. This proposed AD would require replacing the placards on certain stowage bins with new placards, installing partial dividers in certain other stowage bins, and installing straps on stowage bins containing life rafts. For certain airplanes, this proposed AD would also require related concurrent actions. This proposed AD results from test data indicating that outboard overhead stowage bins are unable to withstand the 4.5g download standard intended to protect passengers during flight turbulence or a hard landing. We are proposing this AD to prevent the stowage bins from opening during flight turbulence or a hard landing, which could result in the contents of the stowage bins falling onto the passenger seats below and injuring passengers, or blocking the aisles, impeding the evacuation of passengers in an emergency.
Comments Invited We invite you to submit any relevant written data, views, or arguments regarding this proposed AD. Include the docket number `` FAA 200522321; Directorate Identifier 2005NM123 [[Page 53107]]
AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing date and may amend the proposed AD in light of those comments.
We will post all comments we receive, without change, to http://dms.dot.gov , including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed AD. Using the search function of that website, anyone can find and read the comments in any of our dockets, including the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). You may review DOT's complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 1947778), or you may visit http://dms.dot.gov. Examining the Docket You may examine the AD docket on the Internet at http://dms.dot.gov , or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647
5227) is located on the plaza level of the Nassif Building at the DOT street address stated in the ADDRESSES section. Comments will be available in the AD docket shortly after the Docket Management System receives them.
We have received test data from the manufacturer indicating that the outboard overhead stowage bins are unable to withstand the 4.5g download standard intended to protect passengers during flight turbulence or a hard landing. The affected airplanes are certain Boeing Model 767200 and 300 series airplanes. Under the 4.5g download condition, the threshold deflection of the stowage bins is too large and compromises the engagement of the doors. This condition, if not corrected, could result in the stowage bins opening during flight turbulence or a hard landing, which could result in the contents of the stowage bins falling onto the passenger seats below and injuring passengers, or blocking the aisles, impeding the evacuation of passengers in an emergency.
We have reviewed Boeing Special Attention Service Bulletin 76725
0336, Revision 2, dated August 11, 2005. The service bulletin describes procedures for replacing the placards on certain stowage bins with new placards, installing partial dividers in certain other stowage bins, and installing straps on stowage bins containing life rafts. Although Revision 2 states that the original issue of Service Bulletin 76725
0336 is dated September 18, 2003, the date that appears on that document is May 15, 2003. For certain airplanes, Service Bulletin 767250336, Revision 2, specifies prior or concurrent accomplishment of Boeing Service Bulletin 767250211, Revision 1, dated July 14, 1994. Service Bulletin 76725
0211, Revision 1, describes procedures for replacing the door latches, strikes, and thresholds on the outboard overhead stowage compartments with new, improved latches, strikes, and thresholds. Accomplishing the actions specified in the service information is intended to adequately address the unsafe condition.
Clarification of Compliance Time for the Modifications
Boeing Special Attention Service Bulletin 767250336, Revision 2, specifies that it is not necessary to modify all of the stowage bins at one time, provided the modification of an individual bin is completed prior to the airplane returning to service. We agree with this statement, but want to clarify that the modification of all affected stowage bins must be completed within 60 months after the effective date of the proposed AD. In developing an appropriate compliance time for this AD, we considered not only the manufacturer's recommendation, but the degree of urgency associated with addressing the subject unsafe condition, and the time necessary to perform the modifications. We have determined that a 60month compliance time is an appropriate interval of time for affected airplanes to continue to operate without compromising safety. We have coordinated this compliance time with Boeing.
There are about 366 airplanes of the affected design in the worldwide fleet. The following tables provide the estimated costs for U.S. operators to comply with this proposed AD.
Action Work hours per kit Average labor Cost of parts kit Cost per airplane registered Fleet cost
rate per hour per airplane airplanes
Installation of placards, Between 46 and 74... $65 Between $26,700 and Between $29,690 and 138 Between $4,097,220
dividers, and straps. $44,196. $49,006. and $6,762,828.
Action Work hours Average labor Parts Cost per airplane registered Fleet cost
rate per hour airplanes
Installation of new door latches, Between 24 and 31... $65 Between $7,000 and Between $8,560 and 105 Between $898,800
strikes, and thresholds. $70,000. $72,015. and $7,561,575. [[Page 53108]]
Boeing: Docket No. FAA200522321; Directorate Identifier 2005NM 123AD. Comments Due Date
(a) The FAA must receive comments on this AD action by October 24, 2005. Affected ADs (b) None. Applicability
(c) This AD applies to certain Boeing Model 767200 and 300 series airplanes, as identified in Boeing Special Attention Service Bulletin 767250336, Revision 2, dated August 11, 2005; certificated in any category. Unsafe Condition
(d) This AD results from test data indicating that outboard overhead stowage bins are unable to withstand the 4.5g download standard intended to protect passengers during flight turbulence or a hard landing. We are issuing this AD to prevent the stowage bins from opening during flight turbulence or a hard landing, which could result in the contents of the stowage bins falling onto the passenger seats below and injuring passengers, or blocking the aisles, impeding the evacuation of passengers in an emergency. Compliance
(f) Within 60 months after the effective date of this AD: Replace the placards on certain stowage bins with new placards, install partial dividers in certain other stowage bins, and install straps on stowage bins containing life rafts, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 767250336, Revision 2, dated August 11, 2005.
(g) For Group 1 airplanes as identified in Boeing Special Attention Service Bulletin 767250336, Revision 2, dated August 11, 2005: Prior to or concurrently with the accomplishment of paragraph (f) of this AD, replace the door latches, strikes, and thresholds on the outboard overhead stowage compartments with new latches, strikes, and thresholds. Do the replacement in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767250211, Revision 1, dated July 14, 1994. Actions Accomplished Previously
(h) Accomplishment of the stowage bin modifications required by paragraph (f) of this AD before the effective date of this AD in accordance with Boeing Special Attention Service Bulletin 76725
0336, dated May 15, 2003; or Revision 1, dated October 21, 2004; is considered acceptable for compliance with the corresponding modifications specified in this AD. Parts Installation
(i) As of the effective date of this AD, no person may install on any airplane a stowage bin having a part number identified in Table 2 of Figure 1 of Boeing Special Attention Service Bulletin 767250336, Revision 2, dated August 11, 2005, unless it has been modified by performing the applicable actions in paragraph (f) of this AD. Alternative Methods of Compliance (AMOCs)
(j) The Manager, Seattle Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Issued in Renton, Washington, on August 24, 2005. Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 0517670 Filed 9605; 8:45 am]
Patrick Gillespie, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM150S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 980554056; telephone (425) 9176429; fax (425) 9176590.