[Federal Register Volume 86, Number 157 (Wednesday, August 18, 2021)]
[Proposed Rules]
[Pages 46160-46162]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-17603]


========================================================================
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. 86, No. 157 / Wednesday, August 18, 2021 / 
Proposed Rules

[[Page 46160]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-1069; Project Identifier 2018-CE-039-AD]
RIN 2120-AA64


Airworthiness Directives; Daher Aerospace (Type Certificate 
Previously Held by SOCATA) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain Daher Aerospace (type certificate previously held by 
SOCATA) Model TBM 700 airplanes. This proposed AD results from 
mandatory continuing airworthiness information (MCAI) originated by an 
aviation authority of another country to identify and correct an unsafe 
condition on an aviation product. The unsafe condition that is the 
subject of the MCAI is ice accumulation on the oil cooler air inlet 
duct fin. This proposed AD would require modifying the oil cooler air 
induction duct. The FAA is proposing this AD to address the unsafe 
condition on these products.

DATES: The FAA must receive comments on this proposed AD by October 4, 
2021.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
    <bullet> Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
    <bullet> Fax: (202) 493-2251.
    <bullet> 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.
    <bullet> Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Daher 
Aerospace, 601 NE 10 Street, Pompano Beach, FL 33060; phone: +1 (954) 
366-3331; email: <a href="/cdn-cgi/l/email-protection#6c382e212f0d1e092c080d04091e420f0301"><span class="__cf_email__" data-cfemail="d185939c92b0a3b491b5b0b9b4a3ffb2bebc">[email protected]</span></a>; website: https://www.daher.com/en/aircraft-manufacturer/customer-service/. You may view this service 
information at the FAA, Airworthiness Products Section, Operational 
Safety Branch, 901 Locust, Kansas City, MO 64106. For information on 
the availability of this material at the FAA, call (816) 329-4148.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2020-1069; or in person at 
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. The AD docket contains this NPRM, the MCAI, 
any comments received, and other information. The street address for 
Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Greg Johnson, Aviation Safety 
Engineer, FAA, General Aviation & Rotorcraft Section, International 
Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; phone: 
(720) 626-5462; fax: (816) 329-4090; email: <a href="/cdn-cgi/l/email-protection#9ef9ecfbf9b0f4f1f6f0edf1f0def8ffffb0f9f1e8"><span class="__cf_email__" data-cfemail="81e6f3e4e6afebeee9eff2eeefc1e7e0e0afe6eef7">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2020-1069; 
Project Identifier 2018-CE-039-AD'' at the beginning of your comments. 
The most helpful comments reference a specific portion of the proposal, 
explain the reason for any recommended change, and include supporting 
data. The FAA will consider all comments received by the closing date 
and may amend this proposal because of those comments.
    Except for Confidential Business Information (CBI) as described in 
the following paragraph, and other information as described in 14 CFR 
11.35, the FAA will post all comments received, without change, to 
https://www.regulations.gov, including any personal information you 
provide. The agency will also post a report summarizing each 
substantive verbal contact received about this NPRM.

Confidential Business Information

    CBI is commercial or financial information that is both customarily 
and actually treated as private by its owner. Under the Freedom of 
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public 
disclosure. If your comments responsive to this NPRM contain commercial 
or financial information that is customarily treated as private, that 
you actually treat as private, and that is relevant or responsive to 
this NPRM, it is important that you clearly designate the submitted 
comments as CBI. Please mark each page of your submission containing 
CBI as ``PROPIN.'' The FAA will treat such marked submissions as 
confidential under the FOIA, and they will not be placed in the public 
docket of this NPRM. Submissions containing CBI should be sent to Greg 
Johnson, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft 
Section, International Validation Branch, 901 Locust, Room 301, Kansas 
City, MO 64106. Any commentary that the FAA receives which is not 
specifically designated as CBI will be placed in the public docket for 
this rulemaking.

Background

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Union, has issued EASA AD 
2018-0133, dated June 22, 2018, and corrected June 25, 2018 (referred 
to after this as ``the MCAI''), to address the unsafe condition on 
certain Daher Aerospace (type certificate previously held by SOCATA) 
Model TBM 700 airplanes. The MCAI states:

    During flight testing in icing conditions, oil temperature 
increase was observed. Subsequent investigation determined that the 
loss of efficiency of the oil cooler system was due to ice 
accumulation on the engine air induction duct fins.
    This condition, if not corrected, could lead to uncommanded 
engine in-flight shut-down and reduced control of the aeroplane.
    To address this potential unsafe condition, DAHER AEROSPACE 
developed MOD 70-0616-79 for aeroplanes in production, removing the 
4 upper fins of the oil cooler air induction duct to avoid ice 
accumulation, available for in-service aeroplanes through the SB 
[Daher Aerospace Service Bulletin 70-254 79, dated April 18, 2018].

[[Page 46161]]

    For the reasons described above, this [EASA] AD requires 
modification of the oil cooler air induction duct.

    You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
1069.
    Although the unsafe condition statement in the MCAI identifies the 
cause as ice accumulation on the engine air induction fin, the FAA has 
determined that this does not accurately identify the affected air 
path. The affected area is the oil cooler air inlet duct fin.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Daher Aerospace Service Bulletin SB 70-254, dated 
April 2018. The service information specifies procedures for removing 
the four upper fins of the oil cooler air induction duct and for re-
identifying the oil cooler air induction duct with a new part number. 
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.

Other Related Service Information

    The FAA also reviewed Daher Aerospace Service Bulletin SB 70-231, 
Revision 1, dated July 2018; and Daher Aerospace Service Bulletin SB 
70-219, Revision 2, dated July 2018. The service information identifies 
the kit number and installation procedures for replacing the oil cooler 
air induction duct.

FAA's Determination

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to the FAA's bilateral agreement with this State of Design Authority, 
it has notified the FAA of the unsafe condition described in the MCAI 
and service information referenced above. The FAA is issuing this NPRM 
after determining the unsafe condition described previously is likely 
to exist or develop on other products of the same type design.

Proposed AD Requirements in This NPRM

    This AD requires accomplishing the actions specified in the service 
information already described.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect up to 807 products of U.S. registry. The FAA also estimates that 
it would take about 3 work-hours per product to comply with the 
requirements of this proposed AD. The average labor rate is $85 per 
work-hour. Required parts would cost about $50 per product.
    Based on these figures, the FAA estimates the total cost of the 
proposed AD on U.S. operators to be up to $246,135 at $305 per product.

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.
    The FAA is 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

    The FAA 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) Would not affect intrastate aviation in Alaska, and
    (3) Would 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:

Daher Aerospace (Type Certificate Previously Held by SOCATA): Docket 
No. FAA-2020-1069; Project Identifier 2018-CE-039-AD.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by October 4, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Daher Aerospace (type certificate previously 
held by SOCATA) Model TBM 700 airplanes, all serial numbers, 
certificated in any category, with an oil cooler air induction duct 
part number (P/N) T700A7920040001, T700H792000900000, 
T700H792001900000, T700H792001900200, T700H792001900400, or 
T700H792001900600 installed.
    Note 1 to paragraph (c) of this AD: The applicable oil cooler 
air induction duct P/Ns may be installed in accordance with 
modification 70-0435-79; Daher Aerospace Service Bulletin SB 70-231, 
Revision 1, dated July 2018; or Daher Aerospace Service Bulletin SB 
70-219, Revision 2, dated July 18, 2018.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7900, Engine Oil 
System (Airframe).

(e) Unsafe Condition

    This AD was prompted by mandatory continuing airworthiness 
information (MCAI) originated by an aviation authority of another 
country to identify and correct an unsafe condition on an aviation 
product. The unsafe condition that is the subject of the MCAI is ice 
accumulation on the oil cooler air inlet duct fin. The FAA is 
issuing this AD to prevent ice from accumulating on the oil cooler 
air induction duct fins, which could lead to an increase in oil 
temperature, uncommanded engine inflight shutdown, and reduced 
airplane control.

(f) Compliance

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

(g) Modify the Oil Cooler Air Induction Duct

    (1) Within 3 months after the effective date of this AD, remove 
the four upper fins of the oil cooler air induction duct and re-
identify the oil cooler air induction duct in accordance with the 
Description of Accomplishment Instructions in Daher Aerospace 
Service Bulletin SB 70-254, dated April 2018.

[[Page 46162]]

    (2) As of the effective date of this AD, do not install an oil 
cooler air induction duct P/N T700A7920040001, T700H792000900000, 
T700H792001900000, T700H792001900200, T700H792001900400, or 
T700H792001900600 on any airplane.

(h) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, International Validation Branch, 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 manager of the certification office, send it to the 
attention of the person identified in Related Information or email: 
<a href="/cdn-cgi/l/email-protection#685145293e3b4529213a455f5b58452925272b280e0909460f071e"><span class="__cf_email__" data-cfemail="251c0864737608646c77081216150864686a66654344440b424a53">[email protected]</span></a>.
    (2) 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.

(i) Related Information

    (1) For more information about this AD, contact Greg Johnson, 
Aviation Safety Engineer, FAA, General Aviation & Rotorcraft 
Section, International Validation Branch, 901 Locust, Room 301, 
Kansas City, MO 64106; phone: (720) 626-5462; fax: (816) 329-4090; 
email: <a href="/cdn-cgi/l/email-protection#cea9bcaba9e0a4a1a6a0bda1a08ea8afafe0a9a1b8"><span class="__cf_email__" data-cfemail="94f3e6f1f3bafefbfcfae7fbfad4f2f5f5baf3fbe2">[email protected]</span></a>.
    (2) Refer to European Aviation Safety Agency (EASA) AD 2018-
0133, dated June 22, 2018, and corrected June 25, 2018, for more 
information. You may examine the EASA AD in the AD docket at https://www.regulations.gov by searching for and locating it in Docket No. 
FAA-2020-1069.
    (3) For service information identified in this AD, contact Daher 
Aerospace, 601 NE 10 Street, Pompano Beach, FL 33060; phone: +1 
(954) 366-3331; email: <a href="/cdn-cgi/l/email-protection#1b4f5956587a697e5b7f7a737e6935787476"><span class="__cf_email__" data-cfemail="24706669674556416440454c41560a474b49">[email protected]</span></a>. You may view this 
referenced service information at the FAA, Airworthiness Products 
Section, Operational Safety Branch, 901 Locust, Kansas City, MO 
64106. For information on the availability of this material at the 
FAA, call (816) 329-4148.

    Issued on August 4, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-17603 Filed 8-17-21; 8:45 am]
BILLING CODE 4910-13-P


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