[Federal Register Volume 86, Number 55 (Wednesday, March 24, 2021)]
[Rules and Regulations]
[Pages 15576-15579]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-06200]



[[Page 15576]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0194; Project Identifier MCAI-2020-01434-R; 
Amendment 39-21482; AD 2021-07-05]
RIN 2120-AA64


Airworthiness Directives; Leonardo S.p.a. (Type Certificate 
Previously Held by Agusta S.p.A.) (Leonardo) Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2007-26-52 
which applied to certain Agusta S.p.A. (now Leonardo) Model A109C, 
A109E, and A109K2 helicopters. AD 2007-26-52 required inspecting for 
swelling, deformation, bonding separation, and for a crack on each main 
rotor blade (MRB) with a certain part-numbered tip cap installed, and 
removing the MRB from service before further flight if any of these 
conditions exist and exceed the prescribed limits. This AD retains all 
inspections for certain serial-numbered MRBs, but for MRBs with a 
certain tip cap installed, this AD requires dye-penetrant inspections 
rather than visual inspections. This AD was prompted by additional 
reports of in-flight loss of part of a tip cap. The FAA is issuing this 
AD to address the unsafe condition on these products.

DATES: This AD becomes effective April 8, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of certain documents listed in this AD as of April 8, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of certain other documents listed in this AD as of January 7, 
2002 (66 FR 60144, December 3, 2001).
    The FAA must receive comments on this AD by May 10, 2021.

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 https://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: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For Agusta and Leonardo Helicopters service information identified 
in this final rule, contact Leonardo S.p.a. Helicopters, Emanuele 
Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di 
Samarate (Va) Italy; telephone +39-0331-225074; fax +39-0331-229046; or 
at https://www.leonardocompany.com/en/home. You may view this service 
information at the FAA, Office of the Regional Counsel, Southwest 
Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. For 
information on the availability of this material at the FAA, call (817) 
222-5110. It is also available at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0194.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0194; 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 final rule, the 
European Union Aviation Safety Agency (EASA) AD, any comments received, 
and other information. The street address for Docket Operations is 
listed above.

FOR FURTHER INFORMATION CONTACT: Fred Guerin, Aerospace Engineer, 
General Aviation & Rotorcraft Section, International Validation Branch, 
FAA, 2200 South 216th St., Des Moines, WA 98198; telephone (206) 231-
3500; email fred.guerin@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

    The FAA issued Emergency AD 2007-26-52 on December 20, 2007 and 
published it as a Final rule; request for comments on May 9, 2008, as 
Amendment 39-15519 (73 FR 26316). AD 2007-26-52 applied to Agusta 
S.p.A. (now Leonardo) Model A109C, A109E, and A109K2 helicopters with 
an MRB part number (P/N) 709-0103-01-all dash numbers installed. AD 
2007-26-52 required, for any MRB with a serial number (S/N) with a 
prefix of either ``EM-'' or ``A5-'', except a MRB with a tip cap P/N 
709-0103-29-109, within 10 hours time-in-service (TIS) and thereafter 
at intervals not to exceed 25 hours TIS:
     A tap inspection of the upper and lower sides of each tip 
cap and in the tip cap to blade bond area for bonding separation;
     A visual inspection of the upper and lower side of each 
blade tip cap for swelling or deformation; and
     A dye-penetrant inspection of the tip cap leading edge 
along the welded joint line of the upper and lower tip cap skin shells 
for a crack.
    For any MRB with a tip cap P/N 709-0103-29-109 installed, the AD 
required visually inspecting for a crack on the leading edge at the 
welded bead (joint line of shells) using a 10x or higher power 
magnifying glass, and if there is damage other than a crack, inspecting 
the area using a dye-penetrant inspection method, within the following 
compliance times:
     For a tip cap P/N 709-0103-29-109 with 600 or more hours 
TIS, inspect within the next 5 hours TIS or 30 days, whichever occurs 
first, and thereafter at intervals not to exceed 50 hours TIS; or
     For a tip cap P/N 709-0103-29-109 with less than 600 hours 
TIS, inspect before reaching 600 hours TIS, and thereafter, at 
intervals not to exceed 50 hours TIS.
    AD 2007-26-52 also required replacing the MRB if swelling, 
deformation, a crack, or bonding separation that exceeds the prescribed 
limits is found in an MRB with an affected prefix, except an MRB with a 
tip cap P/N 709-0103-29-109. The MRB must be replaced with an airworthy 
MRB before further flight. If a crack is found in a MRB with tip cap P/
N 709-0103-29-109, then AD 2007-26-52 required replacing the MRB before 
further flight. The actions were required to be accomplished in 
accordance with the manufacturer's service information.
    AD 2007-26-52 was prompted by EASA AD 2007-0306-E, dated December 
14, 2007 (EASA AD 2007-0306-E). EASA, which is the Technical Agent for 
the Member States of the European Union, notified the FAA that an 
unsafe condition may exist on Agusta Model A109C, A109E, and A109K2 
helicopters. EASA advises that an incident occurred in which a Model 
A109E helicopter lost part of the tip of the MRB due to fracture of the 
welded bead (joint line of shells). The manufacturer advised that the 
investigation relating to this tip cap failure was still ongoing.

Actions Since AD 2007-26-52 Was Issued

    Since the FAA issued AD 2007-26-52, EASA issued AD 2020-0230, dated 
October 22, 2020 (EASA AD 2020-0230), which supersedes EASA AD 2007-
0306-E, to correct an unsafe condition for Leonardo S.p.a. Helicopters, 
formerly Finmeccanica S.p.A., AgustaWestland S.p.A., Agusta

[[Page 15577]]

S.p.A., Model A109E, A109K2, and A109C helicopters, all serial numbers. 
EASA advises that recent occurrences of affected parts detachment have 
been reported. EASA advises that the visual inspection for MRBs with 
tip cap P/N 709-0103-29-109 installed is no longer acceptable to detect 
part cracking and that this condition, if not detected and corrected, 
could lead to further affected parts detachments, possibly resulting in 
reduced control of the helicopter.
    Accordingly, EASA AD 2020-0230 replaces the requirements of EASA AD 
2007-0306-E for MRBs with a tip cap P/N 709-0103-29-109 installed, by 
changing the visual inspections of affected parts to dye-penetrant 
inspections and requires, depending on findings, replacement.

FAA's Determination

    These helicopters have been approved by EASA and are approved for 
operation in the United States. Pursuant to the FAA's bilateral 
agreement with the European Union, EASA has notified the FAA about the 
unsafe condition described in its AD. The FAA is issuing this AD after 
evaluating all known relevant information and determining that the 
unsafe condition described previously is likely to exist or develop on 
other helicopters of the same type designs.

Related Service Information Under 1 CFR Part 51

    The FAA previously reviewed the following Agusta Alert Bollettino 
Tecnicos (BT), each Revision B and each dated December 19, 2000:
     No. 109-106 which applies to Model A109C helicopters;
     No. 109EP-1 which applies to Model A109E helicopters; and
     No. 109K-22 which applies to Model A109K2 helicopters.
    These BTs specify procedures for inspecting the MRB tip cap for 
bonding separation and a crack; a tap inspection of the tip cap for 
bonding separation in the blade bond; and a dye-penetrant inspection of 
the tip cap leading edge along the welded joint line of the upper and 
lower tip cap skin shells for a crack.
    The FAA reviewed the following Leonardo Helicopters Alert Service 
Bulletins (ASBs), each Revision A and each dated October 19, 2020:
     No. 109-125 which applies to Model A109C helicopters;
     No. 109EP-085 which applies to Model A109E helicopters; 
and
     No. 109K-048 which applies to Model A109K2 helicopters.
    These ASBs specify dye-penetrant inspecting the tip cap P/N 709-
0103-29-109 for cracks on the tip cap leading edge at the welded bead 
(joint line of shells) and removes the magnifying glass inspection that 
was specified in the original ASBs.
    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.

AD Requirements

    This AD continues to require, for an MRB with a S/N that has a 
prefix of either ``EM-'' or ``A5-'', except an MRB with a tip cap P/N 
709-0103-29-109 installed, within 10 hours TIS after the effective date 
of this AD and thereafter at intervals not to exceed 25 hours TIS, tap 
inspecting each tip cap for bonding separation in specified areas; tap 
inspecting for bonding separation in the tip cap to blade bond area; 
visually inspecting the upper and lower sides of each blade tip cap for 
swelling or deformation; and dye-penetrant inspecting the tip cap 
leading edge along the welded joint line of the upper and lower tip cap 
skin shells for a crack. If there is any swelling, deformation, or 
crack, or bonding separation that exceeds allowable limits, removing 
the blade from service is required before further flight; if there is 
no swelling, deformation or crack, or if bonding separation does not 
exceed allowable limits, continuing the inspections is required.
    For an MRB with a tip cap P/N 709-0103-29-109 installed, this AD 
now requires, for each tip cap with less than 600 hours TIS, before 
reaching 600 hours TIS, and thereafter, at intervals not to exceed 50 
hours TIS, or for each tip cap with 600 or more hours TIS, within the 
next 5 hours TIS or 30 days after the effective date of this AD, 
whichever occurs first, and thereafter at intervals not to exceed 50 
hours TIS, dye-penetrant inspecting the welded bead on the tip cap 
leading edge (joint line between the two metal shells) for a crack and 
removing the tip cap from service if there is a crack.
    This AD also prohibits installing an MRB with tip cap P/N 709-0103-
29-109 on any helicopter unless it has been inspected in accordance 
with the inspection requirements of this AD.

Justification for Immediate Adoption and Determination of the Effective 
Date

    Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5 
U.S.C. 551 et seq.) authorizes agencies to dispense with notice and 
comment procedures for rules when the agency, for ``good cause,'' finds 
that those procedures are ``impracticable, unnecessary, or contrary to 
the public interest.'' Under this section, an agency, upon finding good 
cause, may issue a final rule without providing notice and seeking 
comment prior to issuance. Further, section 553(d) of the APA 
authorizes agencies to make rules effective in less than thirty days, 
upon a finding of good cause.
    An unsafe condition exists that requires the immediate adoption of 
this AD without providing an opportunity for public comments prior to 
adoption. The FAA has found that the risk to the flying public 
justifies foregoing notice and comment prior to adoption of this rule 
because inspections for certain MRBs must be accomplished within 5 or 
10 hours TIS after the effective date of this AD, depending on the MRB, 
and corrective action is required before further flight. Accordingly, 
notice and opportunity for prior public comment are impracticable and 
contrary to the public interest pursuant to 5 U.S.C. 553(b)(3)(B). In 
addition, the FAA finds that good cause exists pursuant to 5 U.S.C. 
553(d) for making this amendment effective in less than 30 days, for 
the same reasons the FAA found good cause to forego notice and comment.

Comments Invited

    The FAA invites you to send any written data, views, or arguments 
about this final rule. Send your comments to an address listed under 
ADDRESSES. Include ``Docket No. FAA-2021-0194; Project Identifier MCAI-
2020-01434-R'' at the beginning of your comments. The most helpful 
comments reference a specific portion of the final rule, 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 final rule 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 final rule.

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 AD contain commercial 
or financial information

[[Page 15578]]

that is customarily treated as private, that you actually treat as 
private, and that is relevant or responsive to this AD, 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 AD. Submissions 
containing CBI should be sent to Fred Guerin, Aerospace Engineer, 
General Aviation & Rotorcraft Section, International Validation Branch, 
FAA, 2200 South 216th St., Des Moines, WA 98198; telephone (206) 231-
3500; email fred.guerin@faa.gov. Any commentary that the FAA receives 
which is not specifically designated as CBI will be placed in the 
public docket for this rulemaking.

Regulatory Flexibility Act

    The requirements of the Regulatory Flexibility Act (RFA) do not 
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt 
a rule without prior notice and comment. Because the FAA has determined 
that it has good cause to adopt this rule without prior notice and 
comment, RFA analysis is not required.

Costs of Compliance

    The FAA estimates that this AD affects 72 helicopters of U.S. 
Registry. Labor rates are estimated at $85 per work-hour. Based on 
these numbers, the FAA estimates the following costs to comply with 
this AD.
    Each tap inspection will take about 3 work-hours and there are no 
parts costs for an estimated cost of about $255 per helicopter per 
inspection cycle.
    Each visual inspection will take about 1 work-hour and there are no 
parts cost for an estimated cost of about $85 per helicopter per 
inspection cycle.
    Each dye-penetrant inspection will take about 3 work-hours and 
parts will cost about $100 for an estimated cost of about $355 per 
helicopter per inspection cycle.
    Replacing a blade, if required, will take about 2 work-hours and 
parts will cost about $98,435 per blade, for an estimated cost of about 
$98,605 per replacement.
    Replacing a tip cap, if required, will take about 30 work-hours and 
parts will cost about $3,034 per tip cap, for an estimated cost of 
about $5,584 per replacement.
    The FAA has included all known costs in its cost estimate. 
According to the manufacturer, however, some of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected operators.

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

    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, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866, and
    (2) Will not affect intrastate aviation in Alaska.

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

    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:
0
a. Removing Airworthiness Directive (AD) 2007-26-52, Amendment 39-15519 
(73 FR 26316, May 9, 2008); and
0
b. Adding the following new AD:

2021-07-05 Leonardo S.p.a. (Type Certificate Previously Held by 
Agusta S.p.A.) (Leonardo): Amendment 39-21482; Docket No. FAA-2021-
0194; Project Identifier MCAI-2020-01434-R.

(a) Effective Date

    This airworthiness directive (AD) is effective April 8, 2021.

(b) Affected ADs

    This AD replaces AD 2007-26-52, Amendment 39-15519 (73 FR 26316, 
May 9, 2008).

(c) Applicability

    This AD applies to Leonardo Model A109C, A109E, and A109K2 
helicopters, certificated in any category, with a main rotor blade 
(MRB) part number (P/N) 709-0103-01-all dash numbers installed.

(d) Subject

    Joint Aircraft Service Component (JASC) Code: 6210, Main Rotor 
Blades.

(e) Unsafe Condition

    This AD was prompted by reports of the in-flight loss of tip 
caps. The FAA is issuing this AD to prevent loss of a tip cap from 
an MRB. The unsafe condition, if not addressed, could result in an 
increase in MRB vibration and subsequent loss of control of the 
helicopter.

(f) Compliance

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

(g) Required Actions

    (1) For an MRB with a serial number that has a prefix of either 
``EM-'' or ``A5-'', except an MRB with a tip cap P/N 709-0103-29-109 
installed, within 10 hours time-in-service (TIS) after the effective 
date of this AD, unless accomplished previously, and thereafter at 
intervals not to exceed 25 hours TIS:
    (i) Tap inspect the upper and lower sides of each tip cap for 
bonding separation between the metal shells and the honeycomb core 
using a steel hammer P/N 109-3101-58-1 or a coin (quarter) in the 
area indicated as honeycomb core on Figure 1 of Agusta Alert 
Bollettino Tecnico (BT) No. 109-106, BT No. 109K-22, or BT No. 
109EP-1, each Revision B and each dated December 19, 2000 (BT No. 
109-106, BT No. 109K-22, or BT No. 109EP-1), as applicable to your 
helicopter model. Also, tap inspect for bonding separation in the 
tip cap to blade bond area (no bonding voids are permitted in this 
area).
    (ii) Visually inspect the upper and lower sides of each blade 
tip cap for swelling or deformation.
    (iii) Dye-penetrant inspect the tip cap leading edge along the 
welded joint line of the upper and lower tip cap skin shells for a 
crack in accordance with the Compliance Instructions, steps 3. 
through 3.2.6., of BT No. 109-106, BT No. 109K-22, or BT No. 109EP-
1, as applicable to your helicopter model.
    (iv) If there is any swelling, deformation, or crack; or bonding 
separation that exceeds

[[Page 15579]]

allowable limits, remove the blade from service before further 
flight.
    (v) If there is no swelling, deformation or crack; or if bonding 
separation does not exceed allowable limits, continue to perform the 
inspections required by this AD.
    (2) For an MRB with a tip cap P/N 709-0103-29-109 installed, 
perform the following at the specified intervals:
    (i) For each tip cap with less than 600 hours TIS, before 
reaching 600 hours TIS, and thereafter, at intervals not to exceed 
50 hours TIS or
    (ii) For each tip cap with 600 or more hours TIS, within the 
next 5 hours TIS or 30 days after the effective date of this AD, 
whichever occurs first, and thereafter at intervals not to exceed 50 
hours TIS.
    (A) Dye-penetrant inspect the welded bead on the tip cap leading 
edge (joint line between the two metal shells) for a crack in 
accordance with the Accomplishment Instructions, steps 3.1 through 
3.6, of Leonardo Helicopters Alert Service Bulletin (ASB) No. 109-
125, ASB No. 109EP-085, or ASB No. 109K-048, each at Revision A and 
each dated October 19, 2020, as applicable your helicopter model.
    (B) If there is a crack, remove the tip cap from service before 
further flight.
    (3) As of the effective date of this AD, do not install any MRB 
with tip cap P/N 709-0103-29-109 on any helicopter unless it has 
been inspected in accordance with the inspection requirements of 
this AD.

(h) Special Flight Permits

    Special flight permits may be issued in accordance with 14 CFR 
21.197 and 21.199 to operate the helicopter to a location where the 
requirements of this AD can be accomplished provided that:
    (1) No passengers are onboard;
    (2) The time to fly to the location does not exceed 10 hours 
TIS; and
    (3) The airspeed does not exceed 70 knots indicated air speed 
(KIAS).

(i) 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 International Validation Branch, send 
it to the attention of the person identified in paragraph (j)(1) of 
this AD. Information may be emailed to: 9-AVS-AIR-730-AMOC@faa.gov.
    (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.

(j) Related Information

    (1) For more information about this AD, contact Fred Guerin, 
Aerospace Engineer, General Aviation & Rotorcraft Section, 
International Validation Branch, FAA, 2200 South 216th St., Des 
Moines, WA 98198; telephone (206) 231-3500; email 
fred.guerin@faa.gov.
    (2) The subject of this AD is addressed in European Union 
Aviation Safety Agency (EASA) AD 2020-0230, dated October 22, 2020. 
You may view the EASA AD on the internet at https://www.regulations.gov in Docket No. FAA-2021-0194.

(k) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference of the service information listed in this 
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (3) The following service information was approved for IBR on 
April 8, 2021.
    (i) Leonardo Helicopters Alert Service Bulletin No. 109-125, 
Revision A, dated October 19, 2020.
    (ii) Leonardo Helicopters Alert Service Bulletin No. 109EP-085, 
Revision A, dated October 19, 2020.
    (iii) Leonardo Helicopters Alert Service Bulletin No. 109K-048, 
Revision A, dated October 19, 2020.
    (4) The following service information was approved for IBR on 
January 7, 2002 (66 FR 60144, December 3, 2001).
    (i) Agusta Alert Bollettino Tecnico No. 109-106, Revision B, 
dated December 19, 2000.
    (ii) Agusta Alert Bollettino Tecnico No. 109EP-1, Revision B, 
dated December 19, 2000.
    (iii) Agusta Alert Bollettino Tecnico No. 109K-22, Revision B, 
dated December 9, 2000.
    (5) For Leonardo Helicopters and Agusta service information 
identified in this AD, contact Leonardo S.p.a. Helicopters, Emanuele 
Bufano, Head of Airworthiness, Viale G. Agusta 520, 21017 C. Costa 
di Samarate (Va) Italy; telephone +39-0331-225074; fax +39-0331-
229046; or at https://www.leonardocompany.com/en/home.
    (6) You may view this service information at the FAA, Office of 
the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 
6N-321, Fort Worth, TX 76177. For information on the availability of 
this material at the FAA, call (817) 222-5110.
    (7) You may view this 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, email: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on March 19, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-06200 Filed 3-22-21; 4:15 pm]
BILLING CODE 4910-13-P


