Federal Register / Vol. 87, No. 64 / Monday, April 4, 2022 / Rules and Regulations 19381 

(k) Related Information 

(1) For more information about this AD, 

contact Doug Rudolph, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, FAA, General Aviation & Rotorcraft 

Section, International Validation Branch, 901 

Locust, Room 301, Kansas City, MO 64106; 

phone: (816) 329–4059; email: 

doug.rudolph@faa.gov. 

(2) Refer to MCAI European Union 

Aviation Safety Agency (EASA) AD 2021– 

0010, dated January 11, 2021, for related 

information. You may examine the EASA AD 

at https://www.regulations.gov by searching 

for and locating Docket No. Docket No. FAA– 

2021–0999. 

(l) 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. 

(i) Pall Corporation Service Bulletin 

SB9337–01–29–01, Issue 1, dated September 

22, 2020. 

(ii) Pilatus Service Bulletin No. 28–015, 

dated October 12, 2020. 

(3) For service information identified in 

this AD, contact Pilatus Aircraft Ltd., CH– 

6371, Stans, Switzerland; phone: +41 848 247 

365; email: techsupport.ch@pilatusaircraft.com; website: https://www.pilatusaircraft.com/. 

(4) 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 (817) 222–5110. 

(5) 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: fr.inspection@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on March 16, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–06975 Filed 4–1–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–1077; Project 

Identifier MCAI–2021–00607–A; Amendment 

39–21974; AD 2022–06–08] 

RIN 2120–AA64 

Airworthiness Directives; Diamond 

Aircraft Industries GmbH Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2017–18– 

10, which applied to certain Diamond 

Aircraft Industries GmbH (DAI) Model 

DA 42, DA 42 M–NG, and DA 42 NG 

airplanes. AD 2017–18–10 required 

modifying the flap control system, 

repetitively inspecting the flap bell 

crank, and replacing the flap bell crank 

as necessary. Since the FAA issued AD 

2017–18–10, the European Union 

Aviation Safety Agency (EASA) 

superseded its mandatory continuing 

airworthiness information (MCAI) to 

correct an unsafe condition on these 

products. This AD retains the actions 

required by AD 2017–18–10, expands 

the applicability, and prohibits the 

installation of certain flap bell cranks. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective May 9, 2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of May 9, 2022. 

ADDRESSES: For service information 

identified in this final rule, contact 

Diamond Aircraft Industries GmbH, 

N.A. Otto-Stra+e 5, A–2700 Wiener 

Neustadt, Austria; phone: +43 2622 

26700; email: office@diamond-air.at; 

website: https://www.diamondaircraft.

com. You may view this service 

information at the Airworthiness 

Products Section, Operational Safety 

Branch, FAA, 901 Locust, Kansas City, 

MO 64106. 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–2021–1077. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–1077; 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 MCAI, 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: 

Penelope Trease, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation 

Branch, FAA, 26805 E 68th Avenue, 

Denver, CO 80249; phone: (303) 342– 

1094; email: penelope.trease@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2017–18–10, 

Amendment 39–19019 (82 FR 42029, 

September 6, 2017) (AD 2017–18–10). 

AD 2017–18–10 applied to certain 

serial-numbered DAI Model DA 42, DA 

42 M–NG, and DA 42 NG airplanes. AD 

2017–18–10 required modifying the flap 

control system by installing two spacers 

to replace a single long spacer, 

repetitively inspecting the flap bell 

crank, and replacing the flap bell crank 

with an improved part as necessary. The 

FAA issued AD 2017–18–10 to prevent 

failure of the flap bell crank, which 

could result in reduced control of the 

airplane. 

The NPRM published in the Federal 

Register on December 23, 2021 (86 FR 

72895). The NPRM was prompted by 

AD 2020–0008, dated January 20, 2020 

(referred to after this as ‘‘the MCAI’’), 

issued by EASA, which is the Technical 

Agent for the Member States of the 

European Union. The MCAI states: 

Occurrences were reported of finding 

cracks and deformation on certain flap bell 

cranks. Investigation results identified 

frequent high load conditions as the cause for 

these events. 

This condition, if not detected and 

corrected, could lead to failure of the flap 

bell crank, possibly resulting in reduced 

control of the aeroplane. 

To address this potential unsafe condition, 

DAI issued [Mandatory Service Bulletin] 

MSB 42–126/42NG–066 and the 

corresponding [Work Instructions] WI MSB 

42–126/42NG–066 (single document), 

providing inspection and modification 

instructions. Consequently, EASA issued AD 

2017–0074 to require modification of the flap 

control system by installing two spacers to 

replace a single long spacer, repetitive 

inspections of the flap bell crank, and, 

depending on findings, replacement of the 

flap bell crank with an improved part. That 

[EASA] AD also provided an optional 

terminating action by installing an improved 

flap bell crank. 

Since that [EASA] AD was issued, it was 

determined that early ‘Revisions’ of P/N 

D60–2757–11–00 flap bell cranks are no 

longer acceptable and should be removed 

from service. Prompted by that 

determination, DAI issued the applicable 

MSB, as defined in this [EASA] AD, to 

provide the relevant instructions. 

For the reason described above, this 

[EASA] AD retains the requirements of EASA 

AD 2017–0074, which is superseded, 

expands the applicability, and requires 

removal from service of certain affected parts. 

You may examine the MCAI in the 

AD docket at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

1077. 


khammond on DSKJM1Z7X2PROD with RULES
19382 Federal Register / Vol. 87, No. 64 / Monday, April 4, 2022 / Rules and Regulations 

EASA made the determination to 

increase the applicability during a 

continued operational safety review. 

EASA determined that the earlier 

versions of the bellcranks could be 

installed on all serial-numbered 

airplanes and expanded the 

applicability accordingly. 

In the NPRM, the FAA proposed to 

retain the actions of AD 2017–18–10 but 

expand the applicability and prohibit 

installing a flap bell crank with part 

number D60–2757–11–00, up to and 

including revision ‘‘d.’’ 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

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 referenced above. The FAA 

reviewed the relevant data and 

determined that air safety requires 

adoption of the AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. This AD is adopted as 

proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Diamond Aircraft 

Mandatory Service Bulletin MSB 42– 

126/1 and MSB 42NG–066/1, dated 

November 14, 2019 (issued as one 

document) published with Diamond 

Aircraft Industries GmbH Work 

Instruction WI–MSB 42–126 and WI– 

MSB 42NG–066, Revision 1, dated 

November 14, 2019 (issued as one 

document) attached. This service 

information specifies procedures for 

inspecting the flap bell crank for cracks, 

installing two spacers instead of one 

long spacer, and replacing early 

revisions of the affected flap bell crank 

up to and including revision ‘‘d’’ with 

an improved flap bell crank. 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. 

Other Related Service Information 

The FAA also reviewed Diamond 

Aircraft Mandatory Service Bulletin 

MSB 42–126 and MSB 42NG–066, dated 

March 27, 2017 (issued as one 

document) published with Diamond 

Aircraft Industries GmbH Work 

Instruction WI–MSB 42–126 and WI– 

MSB 42NG–066, dated March 27, 2017 

(issued as one document) attached. This 

service information specifies procedures 

for inspecting the flap bell crank for 

cracks, installing two spacers instead of 

one long spacer, and replacing early 

revisions of the affected flap bell crank. 

Differences Between This AD and the 

MCAI 

The MCAI applies to DAI Model DA 

42 M airplanes, and this AD does not 

because it does not have an FAA type 

certificate. 

Costs of Compliance 

The FAA estimates that this AD 

affects 200 airplanes of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. 

operators 

Initial inspection and modification .......... 4 work-hours × $85 per hour = $340 ..... $10 ................. $350 ....................... $70,000. 

Repetitive inspection .............................. 2 work-hours × $85 per hour = $170 ..... Not applicable $170 per inspection 

cycle.

$34,000 per inspection cycle. 

The FAA estimates the following 

costs to replace the flap bell crank based 

on the results of the inspection. The 

agency has no way of determining the 

number of airplanes that might need 

this replacement: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Flap bell crank replacement ......................................... 1 work-hour × $85 per hour = $85 ............................... $475 $560 

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. 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 87, No. 64 / Monday, April 4, 2022 / Rules and Regulations 19383 

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 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

2017–18–10, Amendment 39–19019 (82 

FR 42029, September 6, 2017); and 

■ b. Adding the following new 

airworthiness directive: 

2022–06–08 Diamond Aircraft Industries 

GmbH: Amendment 39–21974; Docket 

No. FAA–2021–1077; Project Identifier 

MCAI–2021–00607–A. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective May 9, 2022. 

(b) Affected ADs 

This AD replaces AD 2017–18–10, 

Amendment 39–19019 (82 FR 42029, 

September 6, 2017). 

(c) Applicability 

This AD applies to Diamond Aircraft 

Industries GmbH Model DA 42, DA 42 M– 

NG, and DA 42 NG airplanes, all serial 

numbers, certificated in any category, with a 

flap bell crank part number (P/N) D60–2757– 

11–00, up to and including revision ‘‘f’’ 

installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 2700, Flight Control System. 

(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 MCAI 

describes the unsafe condition as cracks and 

deformation on certain flap bell cranks. The 

FAA is issuing this AD to prevent failure of 

the flap bell crank. The unsafe condition, if 

not addressed, could result in reduced 

control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Actions 

(1) Comply with paragraph (g)(2) or (3) of 

this AD at whichever compliance time in 

paragraph (g)(1)(i) or (ii) of this AD occurs 

later. 

(i) Before the flap bell crank accumulates 

600 hours time-in-service (TIS); or 

(ii) Within 100 hours TIS after the effective 

date of this AD or within 6 months after the 

effective date of this AD, whichever occurs 

first. 

(2) For airplanes with a flap bell crank 

revision ‘‘e’’ or ‘‘f’’: Inspect the flap bell 

crank P/N D60–2757–11–00 for cracks and 

deformation and modify the flap control 

system by installing two spacers, P/N DS 

BU2–10–06–0065–C, by following section III 

Instructions in Diamond Aircraft Industries 

GmbH Work Instruction WI–MSB 42–126 

and WI–MSB 42NG–066, Revision 1, dated 

November 14, 2019 (issued as one document) 

attached to Diamond Aircraft Mandatory 

Service Bulletin MSB 42–126/1 and MSB 

42NG–066/1, dated November 14, 2019 

(issued as one document). 

(i) If there is a crack or any deformation, 

you must replace the flap bell crank with P/ 

N D60–2757–11–00_01, as required by step 6 

of the Instructions, before further flight. 

(ii) If there are no cracks and no 

deformation, repeat the inspection (not the 

modification) at intervals not to exceed 200 

hours TIS until the flap bell crank is replaced 

with flap bell crank P/N D60–2757–11–00_

01. 

(3) For airplanes with a flap bell crank up 

to revision ‘‘d’’: Replace the flap bell crank 

with P/N D60–2757–11–00_01 in accordance 

with section III Instructions in Diamond 

Aircraft Industries GmbH Work Instruction 

WI–MSB 42–126 and WI–MSB 42NG–066, 

Revision 1, dated November 14, 2019 (issued 

as one document) attached to Diamond 

Aircraft Mandatory Service Bulletin MSB 42– 

126/1 and MSB 42NG–066/1, dated 

November 14, 2019 (issued as one 

document). 

(h) Prohibited Installation 

As of the effective date of this AD, do not 

install on any airplane a flap bell crank P/ 

N D60–2757–11–00 with a revision up to and 

including revision ‘‘d.’’ 

(i) Credit for Previous Actions 

This paragraph provides credit for the 

actions required by paragraphs (g)(2) and (3) 

of this AD, if done before the effective date 

of this AD using Diamond Aircraft Industries 

GmbH Work Instruction WI–MSB 42–126 

and WI–MSB 42NG–066, dated March 27, 

2017 (issued as one document) attached to 

Diamond Aircraft Mandatory Service Bulletin 

MSB 42–126 and MSB 42NG–066, dated 

March 27, 2017 (issued as one document). 

(j) 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 paragraph (k)(1) of this AD and 

email 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. 

(k) Related Information 

(1) For more information about this AD, 

contact Penelope Trease, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation Branch, 

FAA, 26805 E 68th Avenue, Denver, CO 

80249; phone: (303) 342–1094; email: 

penelope.trease@faa.gov. 

(2) Refer to European Union Aviation 

Safety Agency (EASA) AD 2020–0008, dated 

January 20, 2020, for more information. You 

may examine the EASA AD at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–1077. 

(3) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (l)(3) and (4) of this AD. 

(l) 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. 

(i) Diamond Aircraft Mandatory Service 

Bulletin MSB 42–126/1 and MSB 42NG–066/ 

1, dated November 14, 2019 (issued as one 

document) published with Diamond Aircraft 

Industries GmbH Work Instruction WI–MSB 

42–126 and WI–MSB 42NG–066, Revision 1, 

dated November 14, 2019 (issued as one 

document) attached. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Diamond Aircraft Industries 

GmbH, N.A. Otto-Stra+e 5, A–2700 Wiener 

Neustadt, Austria; phone: +43 2622 26700; 

email: office@diamond-air.at; website: 

https://www.diamondaircraft.com. 

(4) 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 (817) 222–5110. 

(5) 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: fr.inspection@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on March 10, 2022. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2022–06961 Filed 4–1–22; 8:45 am] 

BILLING CODE 4910–13–P 


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