22438 Federal Register / Vol. 80, No. 77 / Wednesday, April 22, 2015 / Proposed Rules 

Accomplishment Instructions, paragraphs 

3.B.(1) through 3.B.(2), of Sikorsky 269 Alert 

Service Bulletin (ASB) B–299.1 for Model 

269A, 269A–1, 269B, 269C, and TH–55A 

helicopters; 269C–1 ASB C1B–036.1 for 

Model 269C–1 helicopters; or 269D ASB DB– 

041.1 for Model 269D helicopters, each 

Revision 1 and dated February 24, 2012. If 

there is a crack, a break, excessive wear, 

galling, spalling, chipping, corrosion, heat 

discoloration, or distortion on any T/R 

driveshaft splined fitting, before further 

flight, replace the affected splined fitting and 

the T/R driveshaft. 

(ii) If installed, inspect each T/R driveshaft 

grease fitting for looseness, presence of a 

check ball inside each fitting, and for proper 

operation and seating of each check ball. If 

any grease fitting is loose, missing a check 

ball, fails to properly operate, or if a check 

ball fails to seat, before further flight, replace 

the grease fitting. 

(iii) Lubricate each driveshaft fitting by 

following the Accomplishment Instructions, 

paragraph 3.B.(6), of Sikorsky 269 ASB B– 

299.1 for Model 269A, 269A–1, 269B, 269C, 

and TH–55A helicopters; 269C–1 ASB C1B– 

036.1 for Model 269C–1 helicopters; or 269D 

ASB DB–041.1 for Model 269D helicopters, 

each Revision 1 and dated February 24, 2012. 

(2) Within 100 hours TIS after the 

inspections required by paragraph (e)(1) of 

this AD, and thereafter at intervals not 

exceeding 100 hours TIS: 

(i) Remove the driveshaft from the gearbox 

and clean any grease from each end fitting. 

(ii) Inspect the driveshaft for straightness, 

a twist, and a scratch. If the driveshaft has 

any bends, twists, or scratches, before further 

flight, replace the driveshaft. 

(iii) Inspect the internal splines of each 

forward and aft fitting and each internal stop 

for wear. If there is any wear, before further 

flight, replace the fitting. 

(iv) Inspect the drive splines of each 

splined drive fitting for wear. If there is any 

wear, before further flight, replace the 

splined drive fitting. 

(v) Loosen the aft frame clamp and apply 

a torque of 750 to 1,000 inch-pounds to each 

main transmission aft pinion nut. 

(f) Alternative Methods of Compliance 

(AMOC) 

(1) The Manager, New York Aircraft 

Certification Office, FAA, may approve 

AMOCs for this AD. Send your proposal to: 

Stephen Kowalski, Aviation Safety Engineer, 

New York Aircraft Certification Office, 

Engine & Propeller Directorate, 1600 Stewart 

Ave., suite 410, Westbury, New York 11590; 

telephone (516) 228–7327; email 

stephen.kowalski@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(g) Additional Information 

For service information identified in this 

AD, contact Sikorsky Aircraft Corporation, 

Customer Service Engineering, 124 Quarry 

Road, Trumbull, CT 06611; telephone 1–800- 

Winged-S or 203–416–4299; email 

sikorskywcs@sikorsky.com. You may review 

a copy of information at the FAA, Office of 

the Regional Counsel, Southwest Region, 

2601 Meacham Blvd., Room 663, Fort Worth, 

Texas 76137. 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 6500: Tail Rotor Drive. 

Issued in Fort Worth, Texas, on April 14, 

2015. 

Lance T. Gant, 

Acting Directorate Manager, Rotorcraft 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–09098 Filed 4–21–15; 8:45 am] 

BILLING CODE 4910–13P– 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–0927; Directorate 

Identifier 2013–NM–172–AD] 

RIN 2120–AA64 

Airworthiness Directives; Zodiac 

Aerotechnics (Formerly Intertechnique 

Aircraft Systems) 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Zodiac Aerotechnics (formerly 

Intertechnique Aircraft Systems) 

flightcrew oxygen mask regulators as 

installed on, but not limited to, various 

transport and small airplanes. This 

proposed AD was prompted by a report 

that improper maintenance on oxygen 

mask regulators was found. This 

proposed AD would require the 

identification and replacement of all 

potentially affected units. This proposed 

AD also would require installation of a 

placard and revision of the airplane 

flight manual to include an operational 

procedure for use in case of 

depressurization. We are proposing this 

AD to detect and correct affected oxygen 

mask regulators, which could lead to 

inadequate protection to the affected 

flightcrew against hypoxia. Hypoxia can 

start from a headache and drowsiness 

and lead eventually to unconsciousness 

with severe consequence in terms of 

airplane controllability. 

DATES: We must receive comments on 

this proposed AD by June 8, 2015. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Zodiac 

Services, Technical Publication 

Department, Zodiac Aerotechnics, 

Oxygen Systems Europe, 61 Rue Pierre 

Curie—CS20001, 78373 Plaisir Cedex, 

France; phone: (33) 01 61 24 23 23; fax: 

(33) 01 30 55 71 61; email: yann.laine@

zodiacaerospace.com; Internet: http://

www.zodiacaerospace.com. You may 

view this referenced service information 

at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., 

Renton, WA. For information on the 

availability of this material at the FAA, 

call 425–227–1221. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2015– 

0927; or in person at the Docket 

Management Facility between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains this proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Ian 

Lucas, Aerospace Engineer, Boston 

Aircraft Certification Office (ACO) 

ANE–150, FAA, Engine and Propeller 

Directorate, 12 New England Executive 

Park, Burlington, MA 01803; phone: 

781–238–7757; fax: 781–238–7170; 

email: ian.lucas@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2015–0927; Directorate Identifier 

2013–NM–172–AD’’ at the beginning of 


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Federal Register / Vol. 80, No. 77 / Wednesday, April 22, 2015 / Proposed Rules 22439 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD based on those comments. 

We will post all comments we 

receive, without change, to http://

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA Airworthiness 

Directive 2012–0254R1, dated December 

21, 2012 (referred to after this as the 

Mandatory Continuing Airworthiness 

Information, or ‘‘the MCAI’’), to correct 

an unsafe condition for the specified 

products. The MCAI states: 

In a repair station, improper maintenance 

on [flightcrew] oxygen mask regulators was 

reported to Intertechnique: during an 

inspection of the oxygen test bench by its 

manufacturer, incorrect settings were 

noticed. This test bench setting discrepancy 

on the oxygen mask regulator could cause an 

improper mask dilution schedule. 

This condition, if not detected and 

corrected, could lead, in case of a diversion 

above 10,000 feet after a depressurization 

event, to the inhalation of air with improper 

content of oxygen, due to the bad dilution 

settings, thereby providing inadequate 

protection to the affected flightcrew member 

against hypoxia, which can start from a 

headache and drowsiness and lead 

eventually to unconsciousness with severe 

consequence in term of aeroplane 

controllability. 

For the reasons described above, this 

[EASA] AD requires the identification and 

replacement of all potentially affected units. 

This [EASA] AD also requires installation of 

a placard and [a revision to the airplane flight 

manual to include] . . . an operational 

procedure [in case of depressurization] 

pending replacement of the affected units. 

* * * * * 

You may examine the MCAI in the 

AD docket on the Internet at http://

www.regulations.gov by searching for 

and locating it in Docket No. FAA– 

2015–0927. 

Related Service Information Under 1 

CFR Part 51 

Zodiac Services has issued Zodiac 

Aerospace Service Bulletin MCF–SBU– 

35–001, Revision 1, dated December 3, 

2012. The service information describes 

procedures for the identification and 

replacement of all potentially affected 

units. The actions described in this 

service information are intended to 

correct the unsafe condition identified 

in the MCAI. 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 of this NPRM. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Costs of Compliance 

We estimate that this proposed AD 

affects 13 appliances installed on, but 

not limited to, various transport and 

small airplanes of U.S. registry. 

We also estimate that it would take 

about 3 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $225 per 

product. Based on these figures, we 

estimate the cost of this proposed AD on 

U.S. operators to be $6,240, or $480 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. 

We are issuing this rulemaking under 

the authority described in ‘‘Subtitle VII, 

Part A, Subpart III, Section 44701: 

General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); 

3. Will not affect intrastate aviation in 

Alaska; and 

4. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 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 adding 

the following new airworthiness 

directive (AD): 

Zodiac Aerotechnics (formerly 

Intertechnique Aircraft Systems): Docket 

No. FAA–2015–0927; Directorate 

Identifier 2013–NM–172–AD. 

(a) Comments Due Date 

We must receive comments by June 8, 

2015. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Zodiac Aerotechnics 

(formerly Intertechnique Aircraft Systems) 

flightcrew oxygen mask regulators having 

part number MC10, MF10, and MF20 series, 

with serial numbers listed in Appendix 1 of 

Zodiac Services Service Bulletin MCF–SBU– 

35–001, Revision 01, dated December 3, 

2012. These oxygen mask regulators are 

installed on various transport and small 

airplanes, certificated in any category, 

including, but not limited to, the airplanes of 

the manufacturers specified in paragraphs 

(c)(1), (c)(2), (c)(3), (c)(4), (c)(5), (c)(6), and 

(c)(7) of this AD. An oxygen mask regulator 


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22440 Federal Register / Vol. 80, No. 77 / Wednesday, April 22, 2015 / Proposed Rules 

having part number MC10–04–127 with 

serial number 48573 is affected only if it is 

part of part number MSE101–27 with serial 

number 7521. 

(1) Airbus. 

(2) ATR—GIE Avions de Transport 

Re ́gional. 

(3) The Boeing Company. 

(4) Bombardier, Inc. 

(5) Cessna Aircraft Company. 

(6) Gulfstream Aerospace Corporation. 

(7) Gulfstream Aerospace LP. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 26, Fire Protection. 

(e) Reason 

This AD was prompted by a report that 

improper maintenance on oxygen mask 

regulators was found. During an inspection of 

the oxygen test bench, incorrect settings were 

noticed. This test bench setting discrepancy 

on the oxygen mask regulator could cause an 

improper mask dilution schedule. We are 

issuing this AD to detect and correct affected 

oxygen mask regulators, which could lead, in 

case of mask usage at or above 10,000 feet 

after a depressurization event, to the 

inhalation of air with improper content of 

oxygen, due to the bad dilution settings, 

thereby providing inadequate protection to 

the affected flightcrew against hypoxia. 

Hypoxia can start from a headache and 

drowsiness and lead eventually to 

unconsciousness with severe consequence in 

terms of airplane controllability. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection 

Within 30 days after the effective date of 

this AD, inspect each flightcrew oxygen mask 

regulator to identify the part number and 

serial number, in accordance with the 

Accomplishment Instructions of Zodiac 

Aerospace Service Bulletin MCF–SBU–35– 

001, Revision 1, dated December 3, 2012. A 

review of airplane maintenance records is 

acceptable to make the determination as 

specified in this paragraph, provided those 

records can be relied upon for that purpose, 

and each flightcrew oxygen mask regulator 

can be conclusively identified from that 

review. 

(h) Action for Affected Regulators 

If the part number and serial number, 

identified as required by paragraph (g) of this 

AD, are listed in Appendix 1 of Zodiac 

Aerospace Service Bulletin MCF–SBU–35– 

001, Revision 1, dated December 3, 2012, 

within 30 days after the effective date of this 

AD, accomplish the actions specified in 

paragraph (h)(1) or (h)(2) of this AD. 

(1) Replace each affected flightcrew oxygen 

mask regulator with a part identified in 

paragraph (h)(1)(i) or (h)(1)(ii) of this AD. 

(i) A serviceable part, not having a part 

number and serial number listed in 

Appendix 1 of Zodiac Aerospace Service 

Bulletin MCF–SBU–35–001, Revision 1, 

dated December 3, 2012. 

(ii) A part that has been tested and passed 

the test in accordance with paragraph 3.A.(4) 

of the Accomplishment Instructions of 

Zodiac Aerospace Service Bulletin MCF– 

SBU–35–001, Revision 1, dated December 3, 

2012 

(2) Do the actions specified in paragraphs 

(h)(2)(i) and (h)(2)(ii) of this AD. 

(i) Revise the Emergency Procedures 

section of the airplane flight manual (AFM) 

by inserting the statement provided in figure 

1 to paragraph (h)(2)(i) of this AD. This may 

be done by inserting a copy of figure 1 to 

paragraph (h)(2)(i) of this AD into the AFM. 

FIGURE 1 TO PARAGRAPH (h)(2)(i) OF

THIS AD 

In case of depressurization, both pilots must 

use the mask regulator on 100% demand or 

Emergency mode only. 

Note 1 to paragraph (h)(2)(i) of this AD: 

For oxygen over-consumption, refer to 

applicable airplane type certificate holder 

limitations, if existing, depending on the 

airplane configuration and/or flight plan. 

Note 2 to paragraph (h)(2)(i) of this AD: It 

is the operators’ responsibility to assess the 

operational consequences of the oxygen overconsumption and ensure that the operational 

requirements with regard to supplemental 

oxygen and crew protective breathing 

equipment are still done. Operators are 

expected to amend, as applicable, their 

operations manual(s) accordingly. 

(ii) Fabricate and install a placard on the 

flightcrew oxygen mask container that states: 

‘‘USE SELECTOR on ‘‘100%’’ OR 

‘‘EMERGENCY’’ ONLY.’’ 

(i) Regulator Replacement 

Within 12 months after the effective date 

of this AD, unless already accomplished as 

specified in paragraph (h)(1) of this AD, 

replace each affected flightcrew oxygen mask 

regulator identified in paragraph (h) of this 

AD with a part identified in paragraph (i)(1) 

or (i)(2) of this AD. After replacement of all 

affected flightcrew oxygen mask regulators 

on an airplane, the actions specified in 

paragraph (h)(2) of this AD are no longer 

required, the AFM revision specified in 

paragraph (h)(2)(i) of this AD may be 

removed from the AFM, and the placard 

identified in paragraph (h)(2)(ii) of this AD 

may be removed from the airplane. 

(1) A serviceable part, not having a part 

number and serial number listed in 

Appendix 1 of Zodiac Aerospace Service 

Bulletin MCF–SBU–35–001, Revision 1, 

dated December 3, 2012. 

(2) A part that has been tested and passed 

the test in accordance with paragraph 3.A.(4) 

of the Accomplishment Instructions of 

Zodiac Aerospace Service Bulletin MCF– 

SBU–35–001, Revision 1, dated December 3, 

2012. 

(j) Credit for Previous Actions 

This paragraph provides credit for actions 

required by paragraphs (g), (h)(1)(ii), and 

(i)(2) of this AD, if those actions were 

performed before the effective date of this AD 

using Zodiac Aerospace Service Bulletin 

MCF–SBU–35–001, dated October 25, 2012, 

which is not incorporated by reference in this 

AD. 

(k) Parts Installation Limitation 

As of the effective date of this AD, no 

person may install any flightcrew oxygen 

mask regulator with a part number and serial 

number listed in Appendix 1 of Zodiac 

Aerospace Service Bulletin MCF–SBU–35– 

001, Revision 1, dated December 3, 2012, on 

any airplane, unless the regulator has been 

tested and passed the test, in accordance 

with paragraph 3.A.(4) of the 

Accomplishment Instructions of Zodiac 

Aerospace Service Bulletin MCF–SBU–35– 

001, Revision 1, dated December 3, 2012. 

(l) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Boston Aircraft Certification 

Office (ACO) ANE–150, FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the ACO, send it to ATTN: Ian Lucas, 

Aerospace Engineer, Boston Aircraft 

Certification Office (ACO) ANE–150, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; phone: 781–238–7757; fax: 781–238– 

7170; email: ian.lucas@faa.gov. Before using 

any approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the local flight 

standards district office/certificate holding 

district office. The AMOC approval letter 

must specifically reference this AD. 

(m) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) EASA 

Airworthiness Directive 2012–0254R1, dated 

December 21, 2012, for related information. 

This MCAI may be found in the AD docket 

on the Internet at http://www.regulations.gov 

by searching for and locating it in Docket No. 

FAA–2015–0927. 

(2) For service information identified in 

this AD, contact Zodiac Services, Technical 

Publication Department, Zodiac 

Aerotechnics, Oxygen Systems Europe, 61 

Rue Pierre Curie—CS20001, 78373 Plaisir 

Cedex, France; phone: (33) 01 61 24 23 23; 

fax: (33) 01 30 55 71 61; email: yann.laine@

zodiacaerospace.com; Internet:_ http://

www.zodiacaerospace.com. You may view 

this service information at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue SW., Renton, WA. For information 

on the availability of this material at the 

FAA, call 425–227–1221. 

Issued in Renton, Washington, on April 10, 

2015. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2015–09103 Filed 4–21–15; 8:45 am] 

BILLING CODE 4910–13–P 


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