[Federal Register Volume 87, Number 98 (Friday, May 20, 2022)]
[Rules and Regulations]
[Pages 30794-30797]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-10782]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-1167; Project Identifier AD-2021-00823-E; 
Amendment 39-22034; AD 2022-09-14]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2019-22-
05, which applied to all General Electric Company (GE) CF34-8C model 
turbofan engines. AD 2019-22-05 required initial and repetitive 
inspections of the operability bleed valve (OBV) fuel tubes, OBV bleed 
air manifold link rod assemblies, and the OBV fuel fittings. AD 2019-
22-05 also required replacement of OBVs or related OBV link rod 
hardware that fail inspection. This AD was prompted by multiple reports 
of fuel leaks, some leading to engine fires, which have occurred as a 
result of malfunctions related to the OBV. Additionally, the 
manufacturer has redesigned the OBV, which terminates the need for the 
repetitive inspections. This AD requires initial and repetitive 
inspections of the OBV fuel tubes, OBV bleed air manifold link rod 
assemblies, and the OBV fuel fittings installed on GE CF34-8C model 
turbofan engines. This AD requires replacement of OBVs or related OBV 
link rod hardware that fail inspection. As a terminating action to the 
repetitive inspections, this AD requires replacement of certain OBVs 
installed on GE CF34-8C model turbofan engines. This AD also requires 
replacement of certain OBVs installed on GE CF34-8E model turbofan 
engines. The FAA is issuing this AD to address the unsafe condition on 
these products.

DATES: This AD is effective June 24, 2022.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of June 24, 
2022.
    The Director of the Federal Register approved the incorporation by 
reference of a certain other publication listed in this AD as of 
December 23, 2019 (84 FR 63569, November 18, 2019).

ADDRESSES: For service information identified in this final rule, 
contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; 
phone: (513) 552-3272; email: <a href="/cdn-cgi/l/email-protection#6a0b1c030b1e030504440c060f0f1e191f1a1a05181e2a0d0f44090507"><span class="__cf_email__" data-cfemail="4322352a22372a2c2d6d252f262637303633332c31370324266d202c2e">[email protected]</span></a>; website: 
https://www.ge.com. You may view this service information at the 
Airworthiness Products Section, Operational Safety Branch, FAA, 1200 
District Avenue, Burlington, MA 01803. 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-2021-1167.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-1167; 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, any 
comments received, and other information. The address for Docket 
Operations is 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: Scott Stevenson, Aviation Safety 
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; 
phone: (781) 238-7132; fax: (781) 238-7199; email: 
<a href="/cdn-cgi/l/email-protection#bdeeded2c9c993f093eec9d8cbd8d3ced2d3fddbdcdc93dad2cb"><span class="__cf_email__" data-cfemail="e0b3838f9494ceadceb3948596858e938f8ea0868181ce878f96">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2019-22-05, Amendment 39-19784 (84 FR 
63569, November 18, 2019), (AD 2019-22-05). AD 2019-22-05 applied to 
all GE CF34-8C1, CF34-8C5, CF34-8C5A1, CF34-8C5B1, CF34-8C5A2, and 
CF34-8C5A3 (CF34-8C) model turbofan engines. The NPRM published in the 
Federal Register on December 29, 2021 (86 FR 73997). The NPRM was 
prompted by multiple reports of fuel leaks, some leading to engine 
fires, which have occurred as a result of malfunctions related to the 
OBV. Since the FAA issued AD 2019-22-05, the manufacturer redesigned 
the OBV, which terminates the need for the repetitive inspections of 
the OBV fuel tubes, OBV bleed air manifold link rod assemblies, and the 
OBV fuel fittings. Additionally, the FAA determined that GE CF34-8E2, 
CF34-8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E6, and CF34-8E6A1 
(CF34-8E) model turbofan engines are susceptible to the same unsafe 
condition as the CF34-8C model turbofan engines, and therefore, added 
the GE CF34-8E model turbofan engines to the applicability of this AD. 
GE published service information specifying procedures to replace 
certain OBVs installed on GE CF34-8C and CF34-8E model turbofan 
engines. In the NPRM, the FAA proposed to continue to require initial 
and repetitive inspections of the OBV fuel tubes, OBV bleed air 
manifold link rod assemblies, the OBV fuel fittings installed on GE 
CF34-8C model turbofan engines, and replacement of OBVs or related OBV 
link rod hardware that fail inspection. In the NPRM, the FAA proposed 
to require replacement of certain OBVs installed on GE CF34-8C model 
turbofan engines as a terminating action to the repetitive inspections. 
In the NPRM, the FAA also proposed to require replacement of certain 
OBVs installed on GE CF34-8E model turbofan engines. The FAA is issuing 
this AD to address the unsafe condition on these products.

Discussion of Final Airworthiness Directive

Comments

    The FAA received comments from four commenters. The commenters were 
Air Line Pilots Association, International (ALPA), Horizon Air, Japan 
Airlines (JAL), and SkyWest Airlines, Inc. (SkyWest). The following 
presents the comments received on the NPRM and the FAA's response to 
each comment.

Request To Add Guidance for OBVs With Unknown Flight Hours (FHs) Since 
New

    Horizon Air requested that the FAA provide guidance for compliance 
with the Required Actions, paragraphs (g)(4) and (5), in the event the 
FHs since new of the OBV is unknown. Horizon Air commented that 
paragraphs (g)(4) and (5) of the NPRM would require replacement of the 
OBV with a part eligible for installation within prescribed periods, 
which are predicated on the FHs since new of the OBV. Horizon Air 
reasoned that the NPRM does not include guidance for replacing an OBV 
if the FHs since new of the OBV is unknown.
    In response to this comment, the FAA has added paragraph (g)(6) to 
this AD, allowing use of the FHs since new of the engine if the 
accumulated FHs since new of the OBV is unknown.

[[Page 30795]]

Request To Clarify the Reference Date for OBV FHs Since New

    JAL requested that the FAA update paragraph (g)(4) of this AD to 
include a reference date for OBV FHs since new. JAL noted that although 
paragraph (g)(4) of the NPRM has the OBV FHs since new, it does not 
provide a reference date.
    The FAA revised paragraphs (g)(4)(i) through (iii) of this AD to 
identify the reference date as requested by the commenter.

Request To Add Service Information Note to the Required Actions

    JAL requested that the FAA add a note referenced in GE CF34-8E 
Service Bulletin (SB) 75-0021 R00 to the Required Actions, which 
states, ``For all OBVs, if the OBV was upgraded per S/B 75-0018 or the 
OBV cap was replaced per GEK 117619, CF34-8E Component Maintenance 
Manual (CMM), 80-12-41, Revision 03 or higher, the flight hours since 
upgrade or flight hours since the cap was replaced, as applicable, can 
be used instead of flight hours since new.''
    In response to JAL's request, the FAA added paragraph (g)(7) to 
this AD.

Comments on the Costs of Compliance

    SkyWest commented that they have found the costs to convert part 
number (P/N) 4123T71P02 or P/N 4123T71P03 are closer to $25,000 to 
$30,000 than the estimated $17,000 stated in the NPRM. SkyWest also 
commented that replacing the OBV on CF34-8E engines would take more 
than the 2 hours estimated in the NPRM. SkyWest reasoned that in their 
experience, it could take 8 hours to replace the OBV on CF34-8E 
engines.
    In response to SkyWest's comment regarding the estimated costs to 
replace the OBV, the FAA updated the estimated parts costs from $17,230 
to $20,330 in the Costs of Compliance section of this AD. The FAA 
disagrees with revising the estimated labor cost to replace the OBV. 
The cost analysis in AD rulemaking actions typically includes only the 
costs associated with complying with the AD and does not include 
secondary costs. The FAA's cost estimate includes the estimated work 
hours and parts costs to perform the required actions.

Comments on Part Supply Shortages

    SkyWest noted concerns with OBVs modified to P/N 4123T71P06 since 
only the original equipment manufacturer (OEM) could modify the OBVs. 
SkyWest also commented that the OEM is currently having parts supply 
shortages that could jeopardize modifying the OBVs in the required 
timeline as proposed in paragraphs (g)(3) and (4) of the NPRM.
    In response to SkyWest's comments, GE has communicated with the 
supplier and confirmed there is sufficient capacity and margin to meet 
the compliance times required by this AD. GE has also requested that 
the supplier plan improvements for engagement and logistics with the 
operators.

Support for the AD

    ALPA expressed support for the AD as written.

Conclusion

    The FAA reviewed the relevant data, considered any comments 
received, and determined that air safety requires adopting the AD as 
proposed. Accordingly, the FAA is issuing this AD to address the unsafe 
condition on these products. Except for minor editorial changes, and 
any other changes described previously, this AD is adopted as proposed 
in the NPRM. None of the changes will increase the economic burden on 
any operator.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed GE CF34-8C SB 75-0020 R04, dated May 10, 2019 (GE 
SB 75-0020). This SB specifies procedures for inspecting the bleed air 
manifold link rod assemblies; the supply, return, and drain fuel 
fittings; and the fuel tubes on the OBV. This SB also specifies 
procedures for performing corrective actions and replacing any OBVs or 
related OBV link rod hardware that fail the inspection criteria. The 
Director of the Federal Register approved the incorporation by 
reference of GE SB 75-0020 as of December 23, 2019 (84 FR 63569, 
November 18, 2019).
    The FAA reviewed GE CF34-8C SB 75-0025 R01, dated August 1, 2019. 
This SB specifies procedures for replacing and upgrading the suspect 
population of OBVs VIN 5000728-104 (P/N 4123T71P02), VIN 5000728-106 
(P/N 4123T71P03), and VIN 5080046-101 (P/N 4123T71P04).
    The FAA reviewed GE CF34-8E SB 75-0019 R01, dated August 1, 2019. 
This SB specifies procedures for replacing and upgrading the suspect 
population of OBVs VIN 5000728-104 (P/N 4123T71P02), VIN 5000728-106 
(P/N 4123T71P03), and VIN 5080046-101 (P/N 4123T71P04).
    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 ADDRESSES.

Other Related Service Information

    The FAA reviewed GE CF34-8C SB 75-0026 R00, dated February 21, 
2020. This SB introduces OBV VIN 5080046-103 (P/N 4123T71P06).
    The FAA also reviewed GE CF34-8E SB 75-0021 R00, dated February 21, 
2020. This SB introduces OBV VIN 5080046-103 (P/N 4123T71P06).

Costs of Compliance

    The FAA estimates that this AD affects 1,172 engines installed on 
airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replace OBV...........................  2 work-hours x $85 per           $20,330         $20,500     $24,026,000
                                         hour = $170.
Inspect OBV fuel tubes, assemblies,     1 work-hour x $85 per                  0              85          99,620
 and fittings.                           hour = $85.
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary 
replacements that would be required based on the results of the 
inspection. The agency has no way of determining the number of aircraft 
that might need this replacement.

[[Page 30796]]



                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                    Action                                 Labor cost               Parts cost        product
----------------------------------------------------------------------------------------------------------------
Replace OBV tubes, clamps, and link rod         2.25 work-hours x $85 per hour =       $3,786.25       $3,977.50
 hardware.                                       $191.25.
----------------------------------------------------------------------------------------------------------------

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 has determined that 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) Will not affect intrastate aviation in Alaska, 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.

List of Subjects in 14 CFR Part 39

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

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 2019-22-05, Amendment 39-19784 (84 
FR 63569, November 18, 2019); and
0
b. Adding the following new airworthiness directive:

2022-09-14 General Electric Company: Amendment 39-22034; Docket No. 
FAA-2021-1167; Project Identifier AD-2021-00823-E.

(a) Effective Date

    This airworthiness directive (AD) is effective June 24, 2022.

(b) Affected ADs

    This AD replaces AD 2019-22-05, Amendment 39-19784 (84 FR 63569, 
November 18, 2019).

(c) Applicability

    This AD applies to General Electric Company (GE) CF34-8C1, CF34-
8C5, CF34-8C5A1, CF34-8C5B1, CF34-8C5A2, CF34-8C5A3, CF34-8E2, CF34-
8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E6, and CF34-8E6A1 
model turbofan engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7532, Compressor 
Bleed Valve.

(e) Unsafe Condition

    This AD was prompted by multiple reports of fuel leaks, some 
leading to engine fires, which have occurred as a result of 
malfunctions related to the operability bleed valve (OBV). The FAA 
is issuing this AD to prevent failure of the OBV. The unsafe 
condition, if not addressed, could result in an engine fire and 
damage to the airplane.

(f) Compliance

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

(g) Required Actions

    (1) For CF34-8C1, CF34-8C5, CF34-8C5A1, and CF34-8C5B1 model 
turbofan engines with serial numbers (S/Ns): 965101 through 965670 
inclusive; 194101 through 194999 inclusive; and 195101 through 
195653 inclusive:
    (i) Within 880 flight hours (FHs) since the previous inspection, 
500 FHs after December 23, 2019 (the effective date of AD 2019-22-
05), or 6,880 FHs since new, whichever occurs later, inspect the OBV 
bleed air manifold link rod assemblies, the OBV fuel fittings, and 
the OBV fuel tubes.
    (ii) Thereafter, within every 880 FHs since the previous 
inspection, perform additional repeat inspections of the OBV bleed 
air manifold link rod assemblies, the OBV fuel fittings, and the OBV 
fuel tubes.
    (iii) Use the Accomplishment Instructions, paragraph 3.B., of GE 
CF34-8C Service Bulletin (SB) 75-0020 R04, dated May 10, 2019 (GE SB 
75-0020), to perform inspections required by paragraphs (g)(1)(i) 
and (ii) of this AD and, per the inspection criteria in paragraph 
3.B., of GE SB 75-0020 (the inspection criteria), do the following:
    (A) Before further flight, if fuel leakage is observed at the 
OBV fuel fittings or the OBV fuel fittings are loose, replace the 
OBV with a part eligible for installation.
    (B) Before further flight, if any OBV fuel tube clamp is found 
to be outside the inspection criteria, re-torque the OBV fuel tube 
clamp or replace the OBV fuel tube clamp.
    (C) Within 50 flight cycles (FCs) after the inspections required 
by paragraphs (g)(1)(i) and (ii) of this AD, replace any link rod 
hardware found to be outside the inspection criteria. Until the worn 
link rod hardware is replaced, the OBV fuel fittings must be 
inspected before the first flight of each day for leakage and 
looseness in accordance with the inspection criteria. If the OBV 
fuel fittings fail to meet the inspection criteria, before further 
flight, replace the OBV and worn link rod hardware.
    (2) For CF34-8C5B1 model turbofan engines with S/Ns not listed 
in paragraph (g)(1) of this AD and for all CF34-8C5A2 and CF34-8C5A3 
model turbofan engines, perform the following:
    (i) Within 880 FHs after the effective date of this AD or prior 
to accumulating 6,880 FHs since new, whichever occurs later, perform 
an initial inspection of the OBV bleed air manifold link rod 
assemblies, OBV fuel fittings, and OBV fuel tubes.
    (ii) Thereafter, within every 880 FHs since the last inspection, 
repeat the inspection of the OBV bleed air manifold link rod 
assemblies, OBV fuel fittings, and OBV fuel tubes.
    (iii) Use the Accomplishment Instructions, paragraph 3.B., of GE 
SB 75-0020, to perform the inspections in paragraph (g)(2)(i) and 
(ii) of this AD and, per the inspection criteria in paragraph 3.B., 
of GE SB 75-0020, do the following:
    (A) Before further flight, if fuel leakage is observed at the 
OBV fuel fittings or the OBV fuel fittings are loose, replace the 
OBV with a part eligible for installation.
    (B) Before further flight, if any OBV fuel tube clamp is found 
to be outside the inspection criteria, re-torque the OBV fuel tube 
clamp or replace the OBV fuel tube clamp.

[[Page 30797]]

    (C) Within 50 FCs after the inspections required by paragraphs 
(g)(2)(i) and (ii) of this AD, replace any link rod hardware found 
to be outside the inspection criteria. Until the worn link rod 
hardware is replaced, the OBV fuel fittings must be inspected before 
the first flight of each day for leakage and looseness in accordance 
with the inspection criteria. If the OBV fuel fittings fail to meet 
the inspection criteria, before further flight, replace the OBV and 
worn link rod hardware.
    (3) For all affected engines with an installed OBV, VIN 5000728-
104 part number (P/N) (P/N 4123T71P02), VIN 5000728-106 (P/N 
4123T71P03), or VIN 5080046-101 (P/N 4123T71P04), having an OBV S/N 
listed in Appendix A, paragraph 4., of GE CF34-8C SB 75-0025 R01, 
dated August 1, 2019 (GE SB 75-0025), or Appendix A, paragraph 4., 
of GE CF34-8E SB 75-0019 R01, dated August 1, 2019 (GE SB 75-0019), 
respectively, within 180 days after the effective date of this AD, 
remove the OBV and replace with a part eligible for installation.
    (4) For all affected engines with an installed OBV, VIN 5000728-
104 (P/N 4123T71P02), VIN 5000728-106 (P/N 4123T71P03), or VIN 
5080046-101 (P/N 4123T71P04), having an OBV S/N not listed in 
Appendix A, paragraph 4., of GE SB 75-0025 or Appendix A, paragraph 
4., of GE SB 75-0019, respectively, remove the OBV and replace with 
a part eligible for installation within the following compliance 
times:
    (i) For an OBV that has accumulated more than 25,000 FHs since 
new as of the effective date of this AD, remove and replace the OBV 
within 16 months of the effective date of this AD.
    (ii) For an OBV that has accumulated between 12,500 to 25,000 
FHs since new, inclusive, as of the effective date of this AD, 
remove and replace the OBV within 32 months of the effective date of 
this AD.
    (iii) For an OBV with fewer than 12,500 FHs since new as of the 
effective date of this AD, remove and replace the OBV within 48 
months of the effective date of this AD.
    (5) For all affected engines with an installed OBV, VIN 5080046-
102 (P/N 4123T71P05), before the OBV accumulates 25,000 FHs since 
new or within 10 years of the effective date of this AD, whichever 
occurs first, remove the OBV and replace with a part eligible for 
installation.
    (6) For all affected engines with an installed OBV, if the 
accumulated FHs since new of the OBV is unknown, use the FHs since 
new of the engine.
    (7) If the OBV was upgraded or the OBV cap was replaced using 
the service information identified in paragraph 1., Planning 
Information, paragraph C., Compliance, of GE CF34-8E SB 75-0021 R00, 
dated February 21, 2020, the accumulated FHs since the OBV was 
upgraded or accumulated FHs since the OBV cap was replaced, as 
applicable, may be used instead of accumulated FHs since new of the 
OBV.

(h) Terminating Action

    Installation of an OBV that meets the definition of a part 
eligible for installation in paragraph (i) of this AD constitutes 
terminating action for the inspections required by paragraphs (g)(1) 
and (2) of this AD.

(i) Definition

    For the purpose of this AD, a ``part eligible for installation'' 
is an OBV VIN 5080046-103 (P/N 4123T71P06) or an OBV reworked to VIN 
5080046-103 (P/N 4123T71P06).

(j) No Reporting Requirement

    The reporting instructions specified in GE SB 75-0020 are not 
required by this AD.

(k) Credit for Previous Actions

    You may take credit for the initial inspection required by 
paragraph (g)(1)(i) or (2)(i) of this AD if you performed this 
initial inspection before the effective of this AD using GE CF34-8C 
SB 75-0019 R01, dated October 24, 2017, or R00, dated August 4, 
2017; or GE CF34-8C-AL S/B 75-0020, Revision 03, dated December 14, 
2018, as applicable.

(l) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO 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 
ECO Branch, send it to the attention of the person identified in 
paragraph (m) of this AD and email to: <a href="/cdn-cgi/l/email-protection#e4a5aaa1c9a5a0c9a5a9aba7a4828585ca838b92"><span class="__cf_email__" data-cfemail="0b4a454e264a4f264a4644484b6d6a6a256c647d">[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.

(m) Related Information

    For more information about this AD, contact Scott Stevenson, 
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: (781) 238-7132; fax: (781) 238-7199; 
email: <a href="/cdn-cgi/l/email-protection#c093a3afb4b4ee8dee93b4a5b6a5aeb3afae80a6a1a1eea7afb6"><span class="__cf_email__" data-cfemail="fcaf9f938888d2b1d2af88998a99928f9392bc9a9d9dd29b938a">[email protected]</span></a>.

(n) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) 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 
June 24, 2022.
    (i) GE CF34-8C Service Bulletin (SB) 75-0025 R01, dated August 
1, 2019.
    (ii) GE CF34-8E SB 75-0019 R01, dated August 1, 2019.
    (4) The following service information was approved for IBR on 
December 23, 2019 (84 FR 63569, November 18, 2019).
    (i) GE CF34-8C SB 75-0020 R04, dated May 10, 2019.
    (ii) [Reserved]
    (5) For service information identified in this AD, contact 
General Electric Company, 1 Neumann Way, Cincinnati, OH 45215; 
phone: (513) 552-3272; email: <a href="/cdn-cgi/l/email-protection#cbaabda2aabfa2a4a5e5ada7aeaebfb8bebbbba4b9bf8bacaee5a8a4a6"><span class="__cf_email__" data-cfemail="59382f30382d303637773f353c3c2d2a2c2929362b2d193e3c773a3634">[email protected]</span></a>; website: 
https://www.ge.com.
    (6) You may view this service information at FAA, Airworthiness 
Products Section, Operational Safety Branch, 1200 District Avenue, 
Burlington, MA 01803. 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: <a href="/cdn-cgi/l/email-protection#8bedf9a5e2e5f8fbeee8ffe2e4e5cbe5eaf9eaa5ece4fd"><span class="__cf_email__" data-cfemail="6006124e090e1310050314090f0e200e0112014e070f16">[email protected]</span></a>, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on May 16, 2022.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2022-10782 Filed 5-19-22; 8:45 am]
BILLING CODE 4910-13-P


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