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Federal Register / Vol. 86, No. 218 / Tuesday, November 16, 2021 / Proposed Rules
b Affected ADs This AD affects AD 20200802, Amendment 3921108 85 FR 20586, April 14, 2020 AD 20200802.
c Applicability This AD applies to Sikorsky Aircraft Corporation Model S76D helicopters, certificated in any category, with Thales Global Positioning System GPS TopStar 200
LPV receiver part number P/N C17149HA01
installed.
d Subject Joint Aircraft System Component JASC
Code: 3457, Global Positioning System.
e Unsafe Condition This AD was prompted by reports that certain Thales GPS satellite based augmentation system SBAS receivers provided, under certain conditions, erroneous outputs on aircraft positions. The unsafe condition, if not addressed, could result in controlled flight into terrain and loss of control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.

lotter on DSK11XQN23PROD with PROPOSALS1

i Related Information 1 For more information about this AD, contact Nicholas Rediess, Aviation Safety Engineer, Boston ACO Branch, FAA, 1200
District Avenue, Burlington, MA 01803;
phone: 781 2387159; fax: 781 2387199;
email: nicholas.rediess@faa.gov.
2 For service information identified in this AD, contact your local Sikorsky Field
Jkt 256001

Issued on November 8, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.

I. Background and Purpose The NTSB is an independent investigatory agency charged with determining the facts, circumstances, and causes of transportation accidents and incidents. The NTSBs investigation procedures are contained in part 831, which is divided into subparts. The procedures applicable to all modes of transportation are contained in Subpart A of 49 CFR part 831. Subparts BE are specific to the type of transportation;
Subpart B, for example, focuses on Aviation Investigations. The agency notes that the commercial space industry is a unique mode of transportation and the investigatory needs of a commercial space accident and incidentsuch as the reporting of commercial space accidents and incidents, and the preservation of wreckage, evidence, and recordsare distinct enough to warrant its own subpart. Thus, the NTSB proposes the addition of Subpart F for Commercial Space Investigations.
The agencys statutory authority to investigate commercial space launch accidents derives from 49 U.S.C.
1131a1F, which provides in pertinent part that the NTSB shall investigate and establish the facts, circumstances, and probable cause of any other accident related to the transportation of any other individuals or property when the Board decides the accident is catastrophic, the accident involves problems of a recurring character, or investigating the accident would carry out the NTSBs statutory mandate.
The NTSB has exercised this authority and both led and supported commercial space launch and reentry investigations for more than 20 years.
For example, the NTSB investigated the February 9, 1993, procedural anomaly associated with the launch of an Orbital Sciences Corporation Pegasus expendable launch vehicle. The NTSB
investigated the incident and issued safety recommendations to the U.S.
Department of Transportation DOT, the National Aeronautics and Space Administration NASA, and Orbital Sciences Corporation.

FR Doc. 202124956 Filed 111521; 8:45 am BILLING CODE 491013P

NATIONAL TRANSPORTATION
SAFETY BOARD

Docket No.: NTSB20210008

h Alternative Methods of Compliance AMOCs 1 The Manager, Boston ACO Branch, Compliance & Airworthiness Division, 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 i1 of this AD.
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.

16:54 Nov 15, 2021

Docket No. NTSB20210008. All comments received will be posted without change to https
www.regulations.gov, including any personal information provided.
Docket: For access to the docket, go to https www.regulations.gov and search Docket No. NTSB20210008.
FOR FURTHER INFORMATION CONTACT:
Kathleen Silbaugh, General Counsel, 202 3146080, rulemaking@ntsb.gov.
SUPPLEMENTARY INFORMATION:

49 CFR Part 831

g Required Actions 1 Within 130 hours time-in-service after the effective date of this AD, replace each affected GPS receiver identified in paragraph c of this AD with GPS receiver P/N
C17149RA01 in accordance with the Accomplishment Instructions, paragraphs A., C., and D., of Sikorsky S76D Helicopter Service Bulletin SB 76017, Basic Issue, dated May 11, 2021.
2 As of the effective date of this AD, do not install a GPS receiver identified in paragraph c of this AD on any helicopter.
3 Accomplishing paragraph g1 of this AD terminates the requirements of AD 2020
0802.

VerDate Sep<11>2014

Representative or Sikorskys Service Engineering Group at Sikorsky Aircraft Corporation, Mailstop K100, 124 Quarry Road, Trumbull, CT 06611; telephone 1800
9464337 1800WingedS; email wcs_
cust_service_eng.gr-sik@lmco.com. Operators may also log on to the Sikorsky 360 website at https www.sikorsky360.com. You may view this referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.

RIN 3147AA19

Commercial Space Investigations National Transportation Safety Board NTSB.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

For transparency of the agencys commercial space safety investigative authority, the NTSB is proposing adding Subpart F for Commercial Space Investigations to supplement its Investigation Procedures. By codifying its investigative role in commercial space transportation, the NTSB anticipates that Subpart F will enhance transportation safety by enabling the agency to carry out its statutory mission of conducting safety investigations, identifying necessary corrective actions, and preventing future space transportation accidents and incidents.
DATES: Submit written comments regarding this NPRM by January 18, 2022.
SUMMARY:

You may send comments, identified by Docket Number No.
NTSB20210008, by any of the following methods:
Federal e-Rulemaking Portal:
https www.regulations.gov.
Email: rulemaking@ntsb.gov.
Fax: 2023146090.
Mail/Hand Delivery/Courier: NTSB, Office of General Counsel, 490 LEnfant Plaza East SW, Washington, DC 20594.
Instructions: All submissions in response to this NPRM must include
ADDRESSES:

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