This notice announces a required conformity review of regulatory
risk analysis programs for helicopter air ambulance (HAA) certificate holders (CH) conducting
operations under Title 14 of the Code of Federal Regulations (14 CFR) part 135 to determine
their compliance with part 135, §§ 135.617 and 135.619.

This is a special-emphasis notice. This notice provides policy and
guidance to aviation safety inspectors (ASI) concerning the Title 14 of the Code of Federal
Regulations (14 CFR) part 61 limitations for night vision goggle (NVG) instructors. It is the
intent of this notice to clarify the limitations regarding the ability to issue the endorsement
required by part 61, § 61.195(k)(7). This notice will ensure uniform application of policy. This
notice updates policy published in expired Notice N 8900.572, Personnel Authorized to Issue the
Logbook Endorsement Required by 14 CFR Part 61, § 61.195(k)(7) and Their Qualifications and
Limitations, dated December 10, 2020.

This notice provides guidance to aviation safety inspectors (ASI)
with oversight responsibilities of Title 14 of the Code of Federal Regulations (14 CFR) part 141
schools and discusses the requirements for conducting ramp inspections of school aircraft

This notice provides guidance to Flight Standards Service (FS)
aviation safety inspectors (ASI) for oversight of an approved minimum equipment list (MEL)
and MEL management program. This notice reissues and extends the applicability of Notice
N 8900.586, Operator Use of Engineering Change Authorizations (EA), Engineering Change
Orders (EO), and/or Other Acceptable Maintenance Methods Applicable to Minimum
Equipment List (MEL) Items.

This technical standard order (TSO) is for manufacturers applying for a TSO
authorization (TSOA) or letter of TSO design approval (LODA). In it, we (the Federal Aviation
Administration, (FAA)) tell you what minimum performance standards (MPS) your Next
Generation Satellite Systems (NGSS) equipment must meet for approval and identification with
the applicable TSO marking.

AC 147-3C is being posted to the draft documents site to provide Aviation Maintenance Technician Schools (AMTS) and the public awareness of the part 147 regulatory and policy changes that will be effective upon the effective date of the part 147 interim final rule. Revision C of this AC (available below) is the final version of this document. Upon publication of the part 147 final rule, this AC will be posted in the rulemaking docket of the Federal Register at https://www.regulations.gov/docket/FAA-2021-0237. Public comments will be collected for a future revision of the AC, but will not be considered for this Revision C.