Document Title:
Engine Overtorque Test, Calibration Test, Endurance Test, and Teardown Inspection for Turbine Engine Certification (§§ 33.84, 33.85, 33.87, 33.93)
Summary: This advisory circular (AC) provides a method of compliance for the test requirements of § 33.84 (engine overtorque test) when the applicant chooses to run that test as part of the endurance test of § 33.87. It also provides information and guidance on the test requirements of § 33.85 (calibration test), § 33.87 (endurance test), and § 33.93 (teardown inspection) of Title 14, of the Code of Federal Regulations (14 CFR) part 33.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Reference: 14 CFR Part 33.87
Comments Due: July 18, 2014
How to Comment: Email comments to:
dorina.mihail@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Engine and Propeller Directorate
Standards Staff, ANE-111
12 New England Executive Park
Burlington, MA 01803

Fax comments to:
Document Title:
Turbine Engine Continued Rotation And Rotor Locking
Summary: This advisory circular provides guidance for demonstrating compliance with the continued rotation and rotor locking requirements of Title 14, Code of Federal Regulations (14 CFR) part 33. The safety objective of § 33.74 is to ensure that an engine that continues to rotate after shutdown will not create a hazardous condition to the aircraft. This objective imposes a design requirement that basic continued rotation failure conditions or events do not develop into a hazardous event over a sustained continued rotation period.
Documents for Download: Draft Document (MS Word)
Summary of Revisions Report (PDF)
Draft Document Comment Grid (MS Word)
Reference: 14 CFR, Part 33.74 and 33.92
Comments Due: September 12, 2014
How to Comment: Email comments to:
carlos.fernandes@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Engine and Propeller Directorate
Standards Staff, ANE-111
12 New England Executive Park
Burlington, MA 01803

Fax comments to:
781-328-7199
Document Title:
AC 25.851-X Built-in Fire Extinguisher/Fire Suppression Systems
Summary: This proposed AC provides guidance concerning compliance with the airworthiness standards for transport category airplanes pertaining to Class C and Class F cargo compartments that incorporate built-in fire extinguisher/suppression systems.
Documents for Download: Draft Document (MS Word)
Reference: 14 CFR 25.851
Comments Due: October 6, 2014
How to Comment: Email comments to:
theresa.j.white@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Transport Airplane Directorate
Transport Standards Staff, ANM-113
1601 Lind Ave. SW
Renton, WA 98057

Fax comments to:
425-227-1232
Document Title:
AC 25.857-X Class B and F Cargo Compartments
Summary: This AC provides guidance concerning compliance with the airworthiness standards for transport category airplanes pertaining to Class B and Class F cargo compartments, both of which must be accessible in flight to crewmembers (i.e., located on the main deck). This guidance is applicable to transport category airplanes for which a new, amended, or supplemental type certificate is requested.
Documents for Download: Draft Document (MS Word)
Reference: 14 CFR 25.857
Comments Due: October 6, 2014
How to Comment: Email comments to:
theresa.j.white@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Transport Airplane Directorate
Transport Standards Staff, ANM-113
1601 Lind Ave. SW
Renton, WA 98057

Fax comments to:
425-227-1232