81_FR_1571 81 FR 1563 - Airworthiness Directives; Bombardier, Inc. Airplanes

81 FR 1563 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 8 (January 13, 2016)

Page Range1563-1565
FR Document2016-00167

We are revising an earlier proposed airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-102, -103, -106, -201, - 202, -301, -311, and -315 airplanes. The NPRM proposed to require repetitive inspections for discrepancies on certain AC generator mounting adapters, and replacing discrepant adapters with serviceable ones. The NPRM also proposed to require revising the maintenance program to incorporate a repetitive task specified in certain temporary revisions. The NPRM was prompted by a report of a pilot commanding an in-flight engine shut down in response to a low oil pressure warning indication. Further investigation revealed the mounting studs in the engine mounted alternating current (AC) generator mounting plate were pulled out of position and the threaded interface in the plate was corroded. This action revises the NPRM by expanding the applicability. We are proposing this supplemental NPRM (SNPRM) to detect and correct corrosion in the AC generator mounting plate, which could result in a gap between the AC generator and the generator mounting plate, and cause loss of engine oil and consequent engine failure. Since these actions impose an additional burden over those proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

Federal Register, Volume 81 Issue 8 (Wednesday, January 13, 2016) 
[Federal Register Volume 81, Number 8 (Wednesday, January 13, 2016)]
[Proposed Rules]
[Pages 1563-1565]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-00167]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 81, No. 8 / Wednesday, January 13, 2016 / 
Proposed Rules

[[Page 1563]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-0703; Directorate Identifier 2013-NM-004-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of 
comment period.

-----------------------------------------------------------------------

SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) for certain Bombardier, Inc. Model DHC-8-102, -103, -106, -201, -
202, -301, -311, and -315 airplanes. The NPRM proposed to require 
repetitive inspections for discrepancies on certain AC generator 
mounting adapters, and replacing discrepant adapters with serviceable 
ones. The NPRM also proposed to require revising the maintenance 
program to incorporate a repetitive task specified in certain temporary 
revisions. The NPRM was prompted by a report of a pilot commanding an 
in-flight engine shut down in response to a low oil pressure warning 
indication. Further investigation revealed the mounting studs in the 
engine mounted alternating current (AC) generator mounting plate were 
pulled out of position and the threaded interface in the plate was 
corroded. This action revises the NPRM by expanding the applicability. 
We are proposing this supplemental NPRM (SNPRM) to detect and correct 
corrosion in the AC generator mounting plate, which could result in a 
gap between the AC generator and the generator mounting plate, and 
cause loss of engine oil and consequent engine failure. Since these 
actions impose an additional burden over those proposed in the NPRM, we 
are reopening the comment period to allow the public the chance to 
comment on these proposed changes.

DATES: We must receive comments on this SNPRM by February 29, 2016.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, 
Toronto, Ontario M3K 1Y5, Canada; telephone: 416-375-4000; fax: 416-
375-4539; email: [email protected]; Internet http://www.bombardier.com. You may view this referenced service information at 
the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, 
WA. For information on the availability of this material at the FAA, 
call 425-227-1221.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2013-
0703; 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 proposed AD, the regulatory evaluation, any comments 
received, and other information. The street address for the Docket 
Office (telephone: 800-647-5527) is in the ADDRESSES section. Comments 
will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer, 
Avionics and Services Branch, ANE-172, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone: 516-228-7301; fax: 516-794-5531.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2013-0703; 
Directorate Identifier 2013-NM-004-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on 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 proposed AD.

Discussion

    We issued an NPRM to amend 14 CFR part 39 by adding an AD that 
would apply to certain Bombardier, Inc. Model DHC-8-102, -103, -106, -
201, -202, -301, -311, and -315 series airplanes. The NPRM published in 
the Federal Register on August 28, 2013 (78 FR 53080). The NPRM was 
prompted by a report of a pilot commanding an in-flight engine shut 
down in response to a low oil pressure warning indication. Further 
investigation revealed the mounting studs in the engine mounted 
alternating current (AC) generator mounting plate were pulled out of 
position and the threaded interface in the plate was corroded. The NPRM 
proposed to require repetitive inspections for discrepancies on certain 
AC generator mounting adapters, and replacing discrepant adapters with 
serviceable ones. The NPRM also proposed to require revising the 
maintenance program to incorporate a repetitive task specified in 
certain temporary revisions.

Actions Since Previous NPRM (78 FR 53080, August 28, 2013) Was Issued

    Since we issued the NPRM (78 FR 53080, August 28, 2013), we have 
received a report that additional airplanes are affected by the 
identified unsafe condition. Transport Canada Civil Aviation (TCCA), 
which is the

[[Page 1564]]

aviation authority for Canada, has issued Canadian Airworthiness 
Directive, CF-2012-29R1, dated April 28, 2015 (referred to after this 
as the Mandatory Continuing Airworthiness Information, or ``the 
MCAI''), to correct an unsafe condition on certain Bombardier, Inc. 
Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 
airplanes. The MCAI states:

    An incident has been reported, on the DHC-8 aeroplane, where a 
pilot commanded in-flight engine shut down in response to an engine 
low oil pressure warning indication.
    Further investigation revealed the mounting studs in the engine 
mounted alternating current (AC) generator mounting plate were 
pulled out of position and the threaded interface in the plate 
corroded. This resulted in a gap between the AC generator and the 
generator mounting plate, leading to the loss of engine oil and the 
ensuing illumination of the associated engine low oil pressure 
warning indication.
    To ensure the integrity of the affected units, Part I of this 
[Canadian] AD mandates an inspection of the affected AC generator 
mounting adapters part numbers (P/N) 31708-500 or 31708-501, and, as 
applicable, replacement with new or serviceable mounting plates.
    Part II of this [Canadian] AD mandates the incorporation of a 
repeat Maintenance Review Board (MRB) inspection applicable to the 
replacement of the AC generator mounting adapters P/Ns 31708-510 or 
31708-511 only.
    Revision 1 of this [Canadian] AD is issued to include additional 
aeroplane serial numbers (003 through 018) to the Applicability 
section, and to clarify the compliance schedules in Part I B. and 
Part II below.

    You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2013-07030002.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued Bombardier Service Bulletin 8-24-88, Revision 
A, dated September 23, 2014. The service information describes 
repetitive inspections for discrepancies on certain AC generator 
mounting adapters, and replacing discrepant adapters with serviceable 
ones.
    Bombardier has also issued the following service information, which 
describes maintenance review board (MRB) task 2420/14 (functional check 
of the AC generator adapter kit):
     de Havilland Dash 8 Series 100 Temporary Revision MRB-153, 
dated July 10, 2012, to Part 1 Section 2--Systems, of the de Havilland 
Dash 8 Series 100 Maintenance Program Manual PSM 1-8-7 MRB Report.
     de Havilland Dash 8 Series 200 Temporary Revision MRB 2-
31, dated July 10, 2012, to Part 1 Section 2--Systems of the de 
Havilland Dash 8 Series 200 Maintenance Program Manual PSM 1-82-7 MRB 
Report.
     de Havilland Dash 8 Series 300 Temporary Revision MRB 3-
162, dated July 10, 2012, to Part 1 Section 2--Systems of the de 
Havilland Dash 8 Series 300 Maintenance Program Manual PSM 1-83-7 MRB 
Report.
    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.

Comments

    We gave the public the opportunity to participate in developing 
this proposed AD. We received no comments on the NPRM (78 FR 53080, 
August 28, 2013) or on the determination of the cost to the public.

FAA's Determination and Requirements of This SNPRM

    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 the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.
    Certain changes described above expand the scope of the NPRM (78 FR 
53080, August 28, 2013). As a result, we have determined that it is 
necessary to reopen the comment period to provide additional 
opportunity for the public to comment on this SNPRM.

Costs of Compliance

    We estimate that this proposed AD affects 88 airplanes of U.S. 
registry.
    We also estimate that it would take about 6 work-hours per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Required parts would cost about $4,000 
per product. Based on these figures, we estimate the cost of the 
proposed AD on U.S. operators to be $396,880, or $4,510 per product.
    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this proposed 
AD.

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 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 this 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);
    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.

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 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 airworthiness 
directive (AD):


[[Page 1565]]


Bombardier, Inc.: Docket No. FAA-2013-0703; Directorate Identifier 
2013-NM-004-AD.

(a) Comments Due Date

    We must receive comments by February 29, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model DHC-8-102, -103, -106, 
-201, -202, -301, -311, and -315 airplanes; certificated in any 
category; serial numbers 003 through 672 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 24, Electrical 
power.

(e) Reason

    This AD was prompted by a report of a pilot commanding an in-
flight engine shut down in response to a low oil pressure warning 
indication. Further investigation revealed the mounting studs in the 
engine mounted alternating current (AC) generator mounting plate 
were pulled out of position and the threaded interface in the plate 
corroded. We are issuing this AD to detect and correct corrosion in 
the AC generator mounting plate, which could result in a gap between 
the AC generator and the generator mounting plate, and cause loss of 
engine oil and consequent engine failure.

(f) Compliance

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

(g) Inspection of AC Generator Mounting Adaptor and Corrective Action

    Within 6,000 flight hours, or 36 months, or when the AC 
generator is removed for service, whichever occurs first, after the 
effective date of this AD: Do a general visual inspection and a 
mechanical inspection for discrepancies (i.e., damage, corrosion, 
and failed mechanical inspection) on AC generator mounting adapters 
having P/N 31708-500 and P/N 31708-501, in accordance with the 
Accomplishment Instructions of Bombardier Service Bulletin 8-24-88, 
Revision A, dated September 23, 2014. If any discrepancy (i.e., 
damage, corrosion, or failed mechanical inspection) is found, before 
further flight, replace the AC generator mounting adapter with a 
serviceable mounting adapter having P/N 31708-510, P/N 31708-511, P/
N 31708-500, or 31708-501, in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 8-24-88, Revision A, 
dated September 23, 2014.

(h) Repetitive Inspections

    For in-service mounting adapters that have P/N 31708-500 or P/N 
31708-501: Repeat the general visual and mechanical inspection 
required by paragraph (g) of this AD thereafter at intervals not to 
exceed 6,000 flight hours, or 36 months after the most recent 
inspection, or when the AC generator is removed for service, 
whichever occurs first.

(i) Replacement of Certain AC Generator Mounting Adaptors

    For airplanes having AC generator mounting adapters that have P/
N 31708-500 or 31708-501: Within the later of the times specified in 
paragraphs (i)(1) and (i)(2) of this AD, replace the AC generator 
mounting adapter with a new AC generator mounting adapter having P/N 
31708-510 or 31708-511.
    (1) Before the accumulation of 120 months on the AC generator 
mounting adapter.
    (2) Within 12 months, or 2,000 flight hours, or when the 
generator is removed from service, whichever occurs first after the 
effective date of this AD.

(j) Airplane Maintenance Program Revision

    For airplanes having AC generator mounting adapters that have P/
N 31708-510 or 31708-511: Within 30 days after the effective date of 
this AD, revise the airplane maintenance or inspection program, as 
applicable, by incorporating maintenance review board (MRB) Task 
2420/14 in the applicable maintenance program manual specified in 
paragraph (j)(1), (j)(2), or (j)(3) of this AD. The initial 
compliance time for MRB Task 2420/14 is prior to the accumulation of 
10,000 total flight hours or within 60 months since installation of 
the part, whichever occurs first.
    (1) For Model DHC-8-102, -103, and -106 airplanes: de Havilland 
Dash 8 Series 100 Temporary Revision MRB-153, dated July 10, 2012, 
Part 1 Section 2--Systems, of the de Havilland Dash 8 Series 100 
Maintenance Program Manual PSM 1-8-7 MRB Report.
    (2) For Model DHC-8-201 and -202 airplanes: de Havilland Dash 8 
Series 200 Temporary Revision MRB 2-31, dated July 10, 2012, Part 1 
Section 2--Systems of the de Havilland Dash 8 Series 200 Maintenance 
Program Manual PSM 1-82-7 MRB Report.
    (3) For Model DHC-8-301, -311, and -315 airplanes: de Havilland 
Dash 8 Series 300 Temporary Revision MRB 3-162, dated July 10, 2012, 
Part 1 Section 2--Systems of the de Havilland Dash 8 Series 300 
Maintenance Program Manual PSM 1-83-7 MRB Report.

(k) No Alternative Actions or Intervals

    After the maintenance or inspection program has been revised as 
required by paragraph (j) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (m)(1) of 
this AD.

(l) Credit for Previous Actions

    This paragraph provides credit for actions required by paragraph 
(g) of this AD, if those actions were performed before the effective 
date of this AD using Bombardier Service Bulletin 8-24-88, dated 
December 13, 2011.

(m) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office (ACO), ANE-170, FAA, has the 
authority to approve AMOCs for this AD, if requested using the 
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, 
send your request to your principal inspector or local Flight 
Standards District Office, as appropriate. If sending information 
directly to the ACO, send it to ATTN: Program Manager, Continuing 
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 
410, Westbury, NY 11590; telephone: 516-228-7300; fax: 516-794-5531. 
Before using any approved AMOC, notify your appropriate principal 
inspector, or lacking a principal inspector, the manager of the 
local flight standards district office/certificate holding district 
office. The AMOC approval letter must specifically reference this 
AD.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO, 
ANE-170, Engine and Propeller Directorate, FAA; or Transport Canada 
Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO). If approved by the DAO, the approval must 
include the DAO-authorized signature.

(n) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2012-29R1, dated April 28, 2015, for related 
information. This MCAI may be found in the AD docket on the Internet 
at http://www.regulations.gov/#!documentDetail;D=FAA-2013-0703-0002.
    (2) For service information identified in this AD, contact 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt 
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone: 416-375-
4000; fax: 416-375-4539; email: [email protected]; 
Internet http://www.bombardier.com. You may view this service 
information at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on December 31, 2015.
Phil Forde,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-00167 Filed 1-12-16; 8:45 am]
 BILLING CODE 4910-13-P

1563 Proposed Rules Federal Register Vol. 81, No. 8 Wednesday, January 13, 2016 This section of the FEDERAL REGISTER period to allow the public the chance to 11590; telephone: 516–228–7301; fax: contains notices to the public of the proposed comment on these proposed changes. 516–794–5531. issuance of rules and regulations. The DATES: We must receive comments on SUPPLEMENTARY INFORMATION: purpose of these notices is to give interested this SNPRM by February 29, 2016. Comments Invited persons an opportunity to participate in the rule making prior to the adoption of the final ADDRESSES: You may send comments, using the procedures found in 14 CFR We invite you to send any written rules. 11.43 and 11.45, by any of the following relevant data, views, or arguments about methods: this proposed AD. Send your comments DEPARTMENT OF TRANSPORTATION • Federal eRulemaking Portal: Go to to an address listed under the http://www.regulations.gov. Follow the ADDRESSES section. Include ‘‘Docket No. Federal Aviation Administration instructions for submitting comments. FAA–2013–0703; Directorate Identifier • Fax: 202–493–2251. 2013–NM–004–AD’’ at the beginning of 14 CFR Part 39 • Mail: U.S. Department of your comments. We specifically invite Transportation, Docket Operations, comments on the overall regulatory, [Docket No. FAA–2013–0703; Directorate M–30, West Building Ground Floor, economic, environmental, and energy Identifier 2013–NM–004–AD] Room W12–140, 1200 New Jersey aspects of this proposed AD. We will Avenue SE., Washington, DC 20590. consider all comments received by the RIN 2120–AA64 • Hand Delivery: U.S. Department of closing date and may amend this Transportation, Docket Operations, proposed AD based on those comments. Airworthiness Directives; Bombardier, We will post all comments we Inc. Airplanes M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey receive, without change, to http:// AGENCY: Federal Aviation Avenue SE., Washington, DC, between 9 www.regulations.gov, including any Administration (FAA), DOT. a.m. and 5 p.m., Monday through personal information you provide. We Friday, except Federal holidays. will also post a report summarizing each ACTION: Supplemental notice of For service information identified in substantive verbal contact we receive proposed rulemaking (NPRM); about this proposed AD. reopening of comment period. this proposed AD, contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Discussion SUMMARY: We are revising an earlier Garratt Boulevard, Toronto, Ontario We issued an NPRM to amend 14 CFR proposed airworthiness directive (AD) M3K 1Y5, Canada; telephone: 416–375– part 39 by adding an AD that would for certain Bombardier, Inc. Model 4000; fax: 416–375–4539; email: apply to certain Bombardier, Inc. Model DHC–8–102, –103, –106, –201, –202, thd.qseries@aero.bombardier.com; DHC–8–102, –103, –106, –201, –202, –301, –311, and –315 airplanes. The Internet http://www.bombardier.com. –301, –311, and –315 series airplanes. NPRM proposed to require repetitive You may view this referenced service The NPRM published in the Federal inspections for discrepancies on certain information at the FAA, Transport Register on August 28, 2013 (78 FR AC generator mounting adapters, and Airplane Directorate, 1601 Lind Avenue 53080). The NPRM was prompted by a replacing discrepant adapters with SW., Renton, WA. For information on report of a pilot commanding an in- serviceable ones. The NPRM also the availability of this material at the flight engine shut down in response to proposed to require revising the FAA, call 425–227–1221. a low oil pressure warning indication. maintenance program to incorporate a Further investigation revealed the Examining the AD Docket repetitive task specified in certain mounting studs in the engine mounted temporary revisions. The NPRM was You may examine the AD docket on alternating current (AC) generator prompted by a report of a pilot the Internet at http:// mounting plate were pulled out of commanding an in-flight engine shut www.regulations.gov by searching for position and the threaded interface in down in response to a low oil pressure and locating Docket No. FAA–2013– the plate was corroded. The NPRM warning indication. Further 0703; or in person at the Docket proposed to require repetitive investigation revealed the mounting Management Facility between 9 a.m. inspections for discrepancies on certain studs in the engine mounted alternating and 5 p.m., Monday through Friday, AC generator mounting adapters, and current (AC) generator mounting plate except Federal holidays. The AD docket replacing discrepant adapters with were pulled out of position and the contains this proposed AD, the serviceable ones. The NPRM also threaded interface in the plate was regulatory evaluation, any comments proposed to require revising the corroded. This action revises the NPRM received, and other information. The maintenance program to incorporate a by expanding the applicability. We are street address for the Docket Office repetitive task specified in certain proposing this supplemental NPRM (telephone: 800–647–5527) is in the temporary revisions. asabaliauskas on DSK5VPTVN1PROD with PROPOSALS (SNPRM) to detect and correct corrosion ADDRESSES section. Comments will be in the AC generator mounting plate, available in the AD docket shortly after Actions Since Previous NPRM (78 FR which could result in a gap between the receipt. 53080, August 28, 2013) Was Issued AC generator and the generator FOR FURTHER INFORMATION CONTACT: Since we issued the NPRM (78 FR mounting plate, and cause loss of engine Assata Dessaline, Aerospace Engineer, 53080, August 28, 2013), we have oil and consequent engine failure. Since Avionics and Services Branch, ANE– received a report that additional these actions impose an additional 172, FAA, New York Aircraft airplanes are affected by the identified burden over those proposed in the Certification Office (ACO), 1600 Stewart unsafe condition. Transport Canada NPRM, we are reopening the comment Avenue, Suite 410, Westbury, NY Civil Aviation (TCCA), which is the VerDate Sep<11>2014 16:20 Jan 12, 2016 Jkt 238001 PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 E:\FR\FM\13JAP1.SGM 13JAP1

1564 Federal Register / Vol. 81, No. 8 / Wednesday, January 13, 2016 / Proposed Rules aviation authority for Canada, has July 10, 2012, to Part 1 Section 2— rules on aviation safety. Subtitle I, issued Canadian Airworthiness Systems of the de Havilland Dash 8 section 106, describes the authority of Directive, CF–2012–29R1, dated April Series 200 Maintenance Program the FAA Administrator. ‘‘Subtitle VII: 28, 2015 (referred to after this as the Manual PSM 1–82–7 MRB Report. Aviation Programs,’’ describes in more Mandatory Continuing Airworthiness • de Havilland Dash 8 Series 300 detail the scope of the Agency’s Information, or ‘‘the MCAI’’), to correct Temporary Revision MRB 3–162, dated authority. an unsafe condition on certain July 10, 2012, to Part 1 Section 2— We are issuing this rulemaking under Bombardier, Inc. Model DHC–8–102, Systems of the de Havilland Dash 8 the authority described in ‘‘Subtitle VII, –103, –106, –201, –202, –301, –311, and Series 300 Maintenance Program Part A, Subpart III, Section 44701: –315 airplanes. The MCAI states: Manual PSM 1–83–7 MRB Report. General requirements.’’ Under that An incident has been reported, on the This service information is reasonably section, Congress charges the FAA with DHC–8 aeroplane, where a pilot commanded available because the interested parties promoting safe flight of civil aircraft in in-flight engine shut down in response to an have access to it through their normal air commerce by prescribing regulations engine low oil pressure warning indication. course of business or by the means for practices, methods, and procedures Further investigation revealed the identified in the ADDRESSES section. the Administrator finds necessary for mounting studs in the engine mounted safety in air commerce. This regulation alternating current (AC) generator mounting Comments is within the scope of that authority plate were pulled out of position and the We gave the public the opportunity to because it addresses an unsafe condition threaded interface in the plate corroded. This resulted in a gap between the AC generator participate in developing this proposed that is likely to exist or develop on and the generator mounting plate, leading to AD. We received no comments on the products identified in this rulemaking the loss of engine oil and the ensuing NPRM (78 FR 53080, August 28, 2013) action. illumination of the associated engine low oil or on the determination of the cost to pressure warning indication. Regulatory Findings the public. To ensure the integrity of the affected We determined that this proposed AD units, Part I of this [Canadian] AD mandates FAA’s Determination and Requirements would not have federalism implications an inspection of the affected AC generator of This SNPRM under Executive Order 13132. This mounting adapters part numbers (P/N) proposed AD would not have a 31708–500 or 31708–501, and, as applicable, This product has been approved by replacement with new or serviceable the aviation authority of another substantial direct effect on the States, on mounting plates. country, and is approved for operation the relationship between the national Part II of this [Canadian] AD mandates the in the United States. Pursuant to our Government and the States, or on the incorporation of a repeat Maintenance bilateral agreement with the State of distribution of power and Review Board (MRB) inspection applicable to Design Authority, we have been notified responsibilities among the various the replacement of the AC generator of the unsafe condition described in the levels of government. mounting adapters P/Ns 31708–510 or For the reasons discussed above, I MCAI and service information 31708–511 only. certify this proposed regulation: Revision 1 of this [Canadian] AD is issued referenced above. We are proposing this AD because we evaluated all pertinent 1. Is not a ‘‘significant regulatory to include additional aeroplane serial numbers (003 through 018) to the information and determined an unsafe action’’ under Executive Order 12866; Applicability section, and to clarify the condition exists and is likely to exist or 2. Is not a ‘‘significant rule’’ under the compliance schedules in Part I B. and Part II develop on other products of the same DOT Regulatory Policies and Procedures below. type design. (44 FR 11034, February 26, 1979); Certain changes described above 3. Will not affect intrastate aviation in You may examine the MCAI in the expand the scope of the NPRM (78 FR Alaska; and AD docket on the Internet at http:// 53080, August 28, 2013). As a result, we 4. Will not have a significant www.regulations.gov/ have determined that it is necessary to economic impact, positive or negative, #!documentDetail;D=FAA-2013- reopen the comment period to provide on a substantial number of small entities 07030002. additional opportunity for the public to under the criteria of the Regulatory Related Service Information Under comment on this SNPRM. Flexibility Act. 1 CFR Part 51 List of Subjects in 14 CFR Part 39 Bombardier has issued Bombardier Costs of Compliance Air transportation, Aircraft, Aviation Service Bulletin 8–24–88, Revision A, We estimate that this proposed AD safety, Incorporation by reference, dated September 23, 2014. The service affects 88 airplanes of U.S. registry. Safety. information describes repetitive We also estimate that it would take inspections for discrepancies on certain about 6 work-hours per product to The Proposed Amendment AC generator mounting adapters, and comply with the basic requirements of Accordingly, under the authority replacing discrepant adapters with this proposed AD. The average labor delegated to me by the Administrator, serviceable ones. rate is $85 per work-hour. Required the FAA proposes to amend 14 CFR part Bombardier has also issued the parts would cost about $4,000 per 39 as follows: following service information, which product. Based on these figures, we describes maintenance review board estimate the cost of the proposed AD on PART 39—AIRWORTHINESS (MRB) task 2420/14 (functional check of U.S. operators to be $396,880, or $4,510 asabaliauskas on DSK5VPTVN1PROD with PROPOSALS DIRECTIVES the AC generator adapter kit): per product. • de Havilland Dash 8 Series 100 We have received no definitive data ■ 1. The authority citation for part 39 Temporary Revision MRB–153, dated that would enable us to provide cost continues to read as follows: July 10, 2012, to Part 1 Section 2— estimates for the on-condition actions Authority: 49 U.S.C. 106(g), 40113, 44701. Systems, of the de Havilland Dash 8 specified in this proposed AD. Series 100 Maintenance Program § 39.13 [Amended] Manual PSM 1–8–7 MRB Report. Authority for This Rulemaking ■ 2. The FAA amends § 39.13 by adding • de Havilland Dash 8 Series 200 Title 49 of the United States Code the following new airworthiness Temporary Revision MRB 2–31, dated specifies the FAA’s authority to issue directive (AD): VerDate Sep<11>2014 16:20 Jan 12, 2016 Jkt 238001 PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 E:\FR\FM\13JAP1.SGM 13JAP1

Federal Register / Vol. 81, No. 8 / Wednesday, January 13, 2016 / Proposed Rules 1565 Bombardier, Inc.: Docket No. FAA–2013– (i) Replacement of Certain AC Generator in 14 CFR 39.19. In accordance with 14 CFR 0703; Directorate Identifier 2013–NM– Mounting Adaptors 39.19, send your request to your principal 004–AD. For airplanes having AC generator inspector or local Flight Standards District mounting adapters that have P/N 31708–500 Office, as appropriate. If sending information (a) Comments Due Date or 31708–501: Within the later of the times directly to the ACO, send it to ATTN: We must receive comments by February Program Manager, Continuing Operational specified in paragraphs (i)(1) and (i)(2) of this 29, 2016. Safety, FAA, New York ACO, 1600 Stewart AD, replace the AC generator mounting (b) Affected ADs adapter with a new AC generator mounting Avenue, Suite 410, Westbury, NY 11590; adapter having P/N 31708–510 or 31708–511. telephone: 516–228–7300; fax: 516–794– None. 5531. Before using any approved AMOC, (1) Before the accumulation of 120 months (c) Applicability on the AC generator mounting adapter. notify your appropriate principal inspector, (2) Within 12 months, or 2,000 flight hours, or lacking a principal inspector, the manager This AD applies to Bombardier, Inc. Model or when the generator is removed from of the local flight standards district office/ DHC–8–102, –103, –106, –201, –202, –301, –311, and –315 airplanes; certificated in any service, whichever occurs first after the certificate holding district office. The AMOC category; serial numbers 003 through 672 effective date of this AD. approval letter must specifically reference inclusive. this AD. (j) Airplane Maintenance Program Revision (2) Contacting the Manufacturer: For any (d) Subject For airplanes having AC generator requirement in this AD to obtain corrective Air Transport Association (ATA) of mounting adapters that have P/N 31708–510 actions from a manufacturer, the action must America Code 24, Electrical power. or 31708–511: Within 30 days after the be accomplished using a method approved effective date of this AD, revise the airplane by the Manager, New York ACO, ANE–170, (e) Reason maintenance or inspection program, as Engine and Propeller Directorate, FAA; or This AD was prompted by a report of a applicable, by incorporating maintenance Transport Canada Civil Aviation (TCCA); or pilot commanding an in-flight engine shut review board (MRB) Task 2420/14 in the Bombardier, Inc.’s TCCA Design Approval down in response to a low oil pressure applicable maintenance program manual Organization (DAO). If approved by the DAO, warning indication. Further investigation specified in paragraph (j)(1), (j)(2), or (j)(3) of the approval must include the DAO- revealed the mounting studs in the engine this AD. The initial compliance time for MRB authorized signature. mounted alternating current (AC) generator Task 2420/14 is prior to the accumulation of mounting plate were pulled out of position (n) Related Information 10,000 total flight hours or within 60 months and the threaded interface in the plate since installation of the part, whichever (1) Refer to Mandatory Continuing corroded. We are issuing this AD to detect occurs first. Airworthiness Information (MCAI) Canadian and correct corrosion in the AC generator (1) For Model DHC–8–102, –103, and –106 AD CF–2012–29R1, dated April 28, 2015, for mounting plate, which could result in a gap airplanes: de Havilland Dash 8 Series 100 related information. This MCAI may be between the AC generator and the generator Temporary Revision MRB–153, dated July 10, found in the AD docket on the Internet at mounting plate, and cause loss of engine oil 2012, Part 1 Section 2—Systems, of the de http://www.regulations.gov/ and consequent engine failure. Havilland Dash 8 Series 100 Maintenance #!documentDetail;D=FAA-2013-0703-0002. (f) Compliance Program Manual PSM 1–8–7 MRB Report. (2) For service information identified in (2) For Model DHC–8–201 and –202 this AD, contact Bombardier, Inc., Q-Series Comply with this AD within the Technical Help Desk, 123 Garratt Boulevard, airplanes: de Havilland Dash 8 Series 200 compliance times specified, unless already Toronto, Ontario M3K 1Y5, Canada; Temporary Revision MRB 2–31, dated July done. telephone: 416–375–4000; fax: 416–375– 10, 2012, Part 1 Section 2—Systems of the de (g) Inspection of AC Generator Mounting Havilland Dash 8 Series 200 Maintenance 4539; email: thd.qseries@ Adaptor and Corrective Action Program Manual PSM 1–82–7 MRB Report. aero.bombardier.com; Internet http:// (3) For Model DHC–8–301, –311, and –315 www.bombardier.com. You may view this Within 6,000 flight hours, or 36 months, or airplanes: de Havilland Dash 8 Series 300 service information at the FAA, Transport when the AC generator is removed for Temporary Revision MRB 3–162, dated July Airplane Directorate, 1601 Lind Avenue SW., service, whichever occurs first, after the 10, 2012, Part 1 Section 2—Systems of the de Renton, WA. For information on the effective date of this AD: Do a general visual inspection and a mechanical inspection for Havilland Dash 8 Series 300 Maintenance availability of this material at the FAA, call discrepancies (i.e., damage, corrosion, and Program Manual PSM 1–83–7 MRB Report. 425–227–1221. failed mechanical inspection) on AC (k) No Alternative Actions or Intervals Issued in Renton, Washington, on generator mounting adapters having P/N December 31, 2015. 31708–500 and P/N 31708–501, in After the maintenance or inspection program has been revised as required by Phil Forde, accordance with the Accomplishment Instructions of Bombardier Service Bulletin paragraph (j) of this AD, no alternative Acting Manager, Transport Airplane 8–24–88, Revision A, dated September 23, actions (e.g., inspections) or intervals may be Directorate, Aircraft Certification Service. 2014. If any discrepancy (i.e., damage, used unless the actions or intervals are [FR Doc. 2016–00167 Filed 1–12–16; 8:45 am] corrosion, or failed mechanical inspection) is approved as an alternative method of BILLING CODE 4910–13–P found, before further flight, replace the AC compliance (AMOC) in accordance with the generator mounting adapter with a procedures specified in paragraph (m)(1) of serviceable mounting adapter having P/N this AD. DEPARTMENT OF TRANSPORTATION 31708–510, P/N 31708–511, P/N 31708–500, (l) Credit for Previous Actions or 31708–501, in accordance with the Federal Aviation Administration Accomplishment Instructions of Bombardier This paragraph provides credit for actions Service Bulletin 8–24–88, Revision A, dated required by paragraph (g) of this AD, if those September 23, 2014. actions were performed before the effective 14 CFR Part 39 date of this AD using Bombardier Service asabaliauskas on DSK5VPTVN1PROD with PROPOSALS (h) Repetitive Inspections Bulletin 8–24–88, dated December 13, 2011. [Docket No. FAA–2015–8430; Directorate For in-service mounting adapters that have Identifier 2015–NM–093–AD] P/N 31708–500 or P/N 31708–501: Repeat the (m) Other FAA AD Provisions general visual and mechanical inspection The following provisions also apply to this RIN 2120–AA64 required by paragraph (g) of this AD AD: thereafter at intervals not to exceed 6,000 (1) Alternative Methods of Compliance Airworthiness Directives; Fokker flight hours, or 36 months after the most (AMOCs): The Manager, New York Aircraft Services B.V. Airplanes recent inspection, or when the AC generator Certification Office (ACO), ANE–170, FAA, is removed for service, whichever occurs has the authority to approve AMOCs for this AGENCY:Federal Aviation first. AD, if requested using the procedures found Administration (FAA), DOT. VerDate Sep<11>2014 16:20 Jan 12, 2016 Jkt 238001 PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 E:\FR\FM\13JAP1.SGM 13JAP1


Document Created: 2016-01-13 01:01:01
Document Modified: 2016-01-13 01:01:01
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionSupplemental notice of proposed rulemaking (NPRM); reopening of comment period.
DatesWe must receive comments on this SNPRM by February 29, 2016.
ContactAssata Dessaline, Aerospace Engineer, Avionics and Services Branch, ANE-172, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone: 516-228-7301; fax: 516-794-5531.
FR Citation81 FR 1563 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety
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