Document ID: FAA-2008-1117-0006
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Boeing Model 727 Airplanes
Posted Date: 2009-09-29T04:00Z

[Federal Register: September 29, 2009 (Volume 74, Number 187)]
[Rules and Regulations]               
[Page 49792-49795]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr29se09-2]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-1117; Directorate Identifier 2008-NM-106-AD; 
Amendment 39-16026; AD 2009-20-03]
RIN 2120-AA64

 
Airworthiness Directives; Boeing Model 727 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for all 
Boeing Model 727 airplanes. This AD requires inspections for cracking 
of the left- and right-side shear ties and web posts of the kickload 
beam and the adjacent structure in the vertical stabilizer, and 
corrective actions if necessary. This AD results from a report of 
cracking of the left- and right-side web posts and shear ties of the 
kickload beam. We are issuing this AD to detect and correct cracking of 
the left- and right-side web posts and shear ties of the kickload beam, 
which, when coupled with failures in the adjacent structure, could 
result in structural failure of the vertical stabilizer, and loss of 
control of the airplane.

DATES: This AD is effective November 3, 2009.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of November 3, 
2009.

ADDRESSES: For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1; fax 206-766-5680; e-mail me.boecom@boeing.com; 
Internet https://www.myboeingfleet.com.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this AD, the regulatory evaluation, 
any comments received, and other information. The address for the 
Docket Office (telephone 800-647-5527) is the Document Management 
Facility, U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Berhane Alazar, Aerospace Engineer, 
Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 
917-6577; fax (425) 917-6590.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an airworthiness directive (AD) that would apply to 
all Boeing Model 727 airplanes. That NPRM was published in the Federal 
Register on October 29, 2008 (73 FR 64284). That NPRM proposed to 
require inspections for cracking of the left- and right-side shear ties 
and web posts of the kickload beam and the adjacent structure in the 
vertical stabilizer, and corrective actions if necessary.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We considered the comments received from the commenters.

Support for the AD

    Boeing concurs with the contents of the NPRM.

Request To Revise Method of Determining Compliance Times

    ASTAR Air Cargo (ASTAR) states that the flight hours/flight cycles 
compliance methods are inconsistent. ASTAR states that it will have 24 
airplanes that will need to be initially inspected within 4,000 flight 
hours or 3,000 flight cycles if it uses the flight-hour compliance 
method specified in the NPRM. However, ASTAR asserts that it will have 
only eight airplanes that will need to be initially inspected within 
4,000 flight hours or 3,000 flight cycles if it uses the flight-cycles 
compliance method.
    From this comment, we infer that ASTAR requests that we revise the 
method we used to determine the compliance times proposed in the NPRM. 
We disagree. We acknowledge that the time each airplane will reach the 
required compliance time will vary depending on each operator's 
particular utilization. However, we have confirmed that there is no 
inconsistency with the method used to determine the compliance time.
    We point out that the manufacturer recommended the flight-cycle/
flight-hour method for determining the compliance time in Boeing 
Special Attention Service Bulletin 727-55-0093, dated March 12, 2008. 
This recommendation was based on the average utilization rate and age 
of the affected airplanes yet to be inspected, as well as the age of 
the airplanes on which the subject unsafe condition was identified.
    In developing an appropriate compliance time, we considered the 
safety implications, the manufacturer's recommendation, the time 
necessary to complete the rulemaking process, and the operators' normal 
maintenance schedules for timely accomplishment of the required 
actions. In light of these items, we have determined that the method 
for determining the initial compliance time is appropriate. However, 
paragraph (l) of the final rule provides an affected operator the 
opportunity to apply for an adjustment of the compliance time if the 
operator also presents data that justify the adjustment. We do not find 
it necessary to change the final rule in this regard.
    Also, from this comment, we infer there is a misunderstanding that 
an operator has a choice between using the total flight cycles or the 
total flight hours on an airplane to determine the applicable 
compliance time. This AD does not provide such an option. To clarify, 
the ``Condition'' column of Table 1 in paragraph 1.E. of Boeing Special 
Attention Service Bulletin 727-

[[Page 49793]]

55-0093, dated March 12, 2008, specifies, ``All airplanes with more 
than 52,000 total flight hours or 39,000 total flight cycles.'' This 
condition means that for a given airplane that has accumulated more 
than either the specified flight hours or flight cycles, the 
corresponding compliance time is within 4,000 flight hours or 3,000 
flight cycles, whichever occurs first, as specified in Table 1 of 
paragraph 1.E. of Boeing Special Attention Service Bulletin 727-55-
0093, dated March 12, 2008.
    Due to the issues discussed previously in this section, we have 
clarified the compliance time table specified in paragraph 1.E. of 
Boeing Special Attention Service Bulletin 727-55-0093, dated March 12, 
2008, by adding new paragraphs (i) and (j) to this AD, described below. 
We have reidentified the subsequent paragraphs accordingly. We have 
also revised paragraph (f) of this AD to refer to paragraphs (i) and 
(j) of this AD.
    Paragraph (i) of this AD specifies that the ``Condition'' column of 
Table 1 of paragraph 1.E. of Boeing Special Attention Service Bulletin 
727-55-0093, dated March 12, 2008, refers to total flight hours and 
total flight cycles ``at the date on this service bulletin,'' but that 
this AD applies to the airplanes with the specified total flight hours 
and total flight cycles as of the effective date of this AD.
    Paragraph (j) of this AD specifies that the ``Condition'' in the 
first row of Table 1 in paragraph 1.E. of Boeing Special Attention 
Service Bulletin 727-55-0093, dated March 12, 2008, applies to 
airplanes with less than 52,000 total flight hours ``or'' 39,000 total 
flight cycles, but that for this AD, the first row of the table is 
applicable to airplanes with less than 52,000 total flight hours 
``and'' less than 39,000 total flight cycles.

Request To Revise Cost Estimate

    FedEx Express states that Boeing Special Attention Service Bulletin 
727-55-0093, dated March 12, 2008, provides two options for accessing 
the required inspection area specified in the NPRM. FedEx Express 
explains that the first option is to remove an access panel and proceed 
down the manholes to the inspection area inside the vertical 
stabilizer, and the second is to remove the number 2 engine and the aft 
section of the intake duct. FedEx Express asserts that the second 
option requires an additional 34 work-hours to the inspection, which 
will increase the time the airplanes must be out of service for heavy 
maintenance. The additional time in maintenance concerns FedEx Express 
for economic reasons.
    FedEx Express further points out that the NPRM specifies that 10 
work-hours are necessary to do the required inspection; however, FedEx 
Express reiterates that the number of required work-hours depends on 
the access method used.
    From these comments, we infer that FedEx Express requests that we 
revise the cost estimate provided in the NPRM to include separate labor 
costs for inspection based on which option is used. We do not agree to 
revise the proposed cost estimate. We acknowledge that access option 2 
in Boeing Special Attention Service Bulletin 727-55-0093, dated March 
12, 2008, would take significantly more time and could increase the 
airplane down-time. However, the cost information below describes only 
the direct costs of the specific actions required by this AD. Based on 
the best data available, the manufacturer provided the number of work 
hours (10) necessary to do the required actions. This number represents 
the time necessary to perform only the actions actually required by 
this AD. We recognize that, in doing the actions required by an AD, 
operators might incur incidental costs in addition to the direct costs. 
The cost analysis in AD rulemaking actions, however, typically does not 
include incidental costs such as the time required to gain access and 
close up, time necessary for planning, or time necessitated by other 
administrative actions. Those incidental costs, which might vary 
significantly among operators, are almost impossible to calculate. We 
have not changed the final rule in this regard.

Request To Verify Adequate Replacement Parts

    FedEx Express points out that limited numbers of web post and shear 
tie kickload beams are available according to the Boeing Parts Page on 
Boeing's Web site. Further, FedEx Express asserts that the Boeing Parts 
Page did not provide any information about the timeline for stock 
replenishment of these parts.
    From this comment, we infer that FedEx Express is requesting 
verification that adequate replacement parts will be available to 
operators. Since replacement of web post and shear tie kickload beams 
is required only under certain conditions, the total number of 
replacement parts needed cannot be determined until inspections 
required by the AD are done. Therefore, we cannot predict the total 
number of parts needed prior to issuance of the AD.
    We have investigated this issue further and have determined that 
operators may produce their own parts in accordance with Section 21.303 
(``Replacement and Modification Parts'') of the Federal Aviation 
Regulations (14 CFR 21.303) so that the actions required by this AD can 
be accomplished within the specified compliance time. We have revised 
paragraph (f) of this final rule to specify that, as an alternative to 
using the parts specified in Boeing Special Attention Service Bulletin 
727-55-0093, dated March 12, 2008, operators may fabricate their own 
parts in accordance with FAA-approved Boeing data.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
the AD with the changes described previously. We also determined that 
these changes will not increase the economic burden on any operator or 
increase the scope of the AD.

Interim Action

    We consider this AD interim action. If final action is later 
identified, we might consider further rulemaking then.

Costs of Compliance

    We estimate that this AD affects 364 airplanes of U.S. registry. 
The following table provides the estimated costs for U.S. operators to 
comply with this AD.

                                                                     Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                 Number of U.S.-
                Action                   Work hours    Average  labor       Parts          Cost per product         registered          Fleet cost
                                                        rate per hour                                               airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Inspection...........................              10             $80              $0  $800, per inspection                 364  $291,200, per
                                                                                        cycle.                                    inspection cycle.
--------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 49794]]

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

    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 that this AD:
    (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) 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.
    You can find our regulatory evaluation and the estimated costs of 
compliance in the AD Docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new AD:

2009-20-03 Boeing: Amendment 39-16026. Docket No. FAA-2008-1117; 
Directorate Identifier 2008-NM-106-AD.

Effective Date

    (a) This airworthiness directive (AD) is effective November 3, 
2009.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all Boeing Model 727, 727C, 727-100, 727-
100C, 727-200, and 727-200F series airplanes, certificated in any 
category.

Unsafe Condition

    (d) This AD results from a report of cracking of the left- and 
right-side web posts and shear ties of the kickload beam. We are 
issuing this AD to detect and correct cracking of the left- and 
right-side web posts and shear ties of the kickload beam, which, 
when coupled with failures in the adjacent structure, could result 
in structural failure of the vertical stabilizer, and loss of 
control of the airplane.

Compliance

    (e) Comply with this AD within the compliance times specified, 
unless already done.

Inspections and Corrective Actions

    (f) At the times specified in paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 727-55-0093, dated March 
12, 2008 (``the service bulletin''), except as provided by 
paragraphs (g), (h), (i), and (j) of this AD: Do the inspections to 
detect cracking of the left- and right-side web posts and shear ties 
of the kickload beam, by doing all of the actions specified in Part 
2 and the applicable corrective actions specified in Part 3 of the 
Accomplishment Instructions of the service bulletin, except as 
provided by paragraph (k) of this AD. Do all applicable corrective 
actions before further flight. Repeat the inspections thereafter at 
the intervals specified in paragraph 1.E. of the service bulletin. 
As an alternative to using the parts specified in Boeing Special 
Attention Service Bulletin 727-55-0093, dated March 12, 2008, 
operators may fabricate their own parts in accordance with FAA-
approved Boeing data.

Clarifications and Exception to the Specified Compliance Times

    (g) To determine the compliance times for airplanes having 
exactly 52,000 total flight hours or 39,000 total flight cycles, for 
the purposes of this AD, these airplanes are grouped with airplanes 
having ``less than'' 52,000 total flight hours or 39,000 total 
flight cycles, as specified in paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 727-55-0093, dated March 
12, 2008.
    (h) Where Boeing Special Attention Service Bulletin 727-55-0093, 
dated March 12, 2008, specifies a compliance time after the date on 
the service bulletin, this AD requires compliance within the 
specified compliance time after the effective date of this AD.
    (i) Where the ``Condition'' column of Table 1 of paragraph 1.E. 
of Boeing Special Attention Service Bulletin 727-55-0093, dated 
March 12, 2008, refers to airplanes having accumulated the specified 
total flight hours and total flight cycles ``at the date on this 
service bulletin,'' this AD requires compliance for airplanes having 
accumulated the specified total flight hours and total flight cycles 
as of the effective date of this AD.
    (j) The ``condition'' in the first row of Table 1 of paragraph 
1.E. of Boeing Special Attention Service Bulletin 727-55-0093, dated 
March 12, 2008, applies to airplanes ``with less than 52,000 total 
flight hours or 39,000 total flight cycles.'' For this AD, the first 
row of Table 1 is applicable to airplanes ``with less than 52,000 
total flight hours and less than 39,000 total flight cycles.''

Exception to the Specified Corrective Actions

    (k) If any cracking is found during any inspection required by 
this AD, and Boeing Special Attention Service Bulletin 727-55-0093, 
dated March 12, 2008, specifies contacting Boeing for appropriate 
action: Before further flight, repair the cracking or damage using a 
method approved by the Manager, Seattle Aircraft Certification 
Office (ACO), FAA. For a repair method to be approved by the 
Manager, Seattle ACO, as required by this paragraph, the Manager's 
approval letter must specifically refer to this AD.

Alternative Methods of Compliance (AMOCs)

    (l)(1) The Manager, Seattle ACO, FAA, ATTN: Berhane Alazar, 
Aerospace Engineer, Airframe Branch, ANM-120S, 1601 Lind Avenue, 
SW., Renton, Washington 98057-3356; telephone (425) 917-6577; fax 
(425) 917-6590; has the authority to approve AMOCs for this AD, if 
requested using the procedures found in 14 CFR 39.19.
    (2) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
Before using any approved AMOC on any airplane to which the AMOC 
applies, notify your appropriate principal inspector (PI) in the FAA 
Flight Standards District Office (FSDO), or lacking a PI, your local 
FSDO.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair required by this AD, if it is approved by an 
Authorized Representative for the Boeing Commercial Airplanes 
Delegation Option Authorization Organization who has been authorized 
by the Manager, Seattle ACO, to make those findings. For a repair 
method to be approved, the repair must meet the certification basis 
of the airplane, and the approval must specifically refer to this 
AD.

Material Incorporated by Reference

    (m) You must use Boeing Special Attention Service Bulletin 727-
55-0093, dated March 12, 2008, to do the actions required by this 
AD, unless the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of

[[Page 49795]]

this service information under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 
206-544-5000, extension 1; fax 206-766-5680; e-mail 
me.boecom@boeing.com; Internet https://www.myboeingfleet.com.
    (3) You may review copies of the service information at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, 
Washington. For information on the availability of this material at 
the FAA, call 425-227-1221 or 425-227-1152.
    (4) You may also review copies of the service information that 
is incorporated by reference at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at NARA, call 202-741-6030, or go to: http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.

    Issued in Renton, Washington, on September 15, 2009.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E9-22871 Filed 9-28-09; 8:45 am]

BILLING CODE 4910-13-P