Federal Aviation Administration August 27, 2021 – Federal Register Recent Federal Regulation Documents

Airworthiness Directives; Pratt & Whitney Turbofan Engines
Document Number: 2021-18489
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to supersede Airworthiness Directive (AD) 2011-07-02, which applies to all Pratt & Whitney (P&W) JT8D-209, JT8D- 217, JT8D-217A, JT8D-217C, and JT8D-219 model turbofan engines. AD 2011-07-02 requires initial and repetitive torque inspections of the 3rd-stage and 4th-stage low-pressure turbine (LPT) blades. AD 2011-07- 02 also requires replacement of the LPT blade if wear limits are exceeded, replacement of the LPT-to-exhaust case bolts and nuts, and installation of crushable sleeve spacers on the bolts. Since the FAA issued AD 2011-07-02, the FAA received a report of an MD-82 airplane, equipped with a JT8D-217 engine, experiencing an engine surge that resulted in the fracture of an LPT blade. This proposed AD would retain certain requirements of AD 2011-07-02, while revising the inspection thresholds and replacement intervals for the 3rd-stage and 4th-stage LPT blades. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Pacific Aerospace Limited Airplanes
Document Number: 2021-18444
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for certain Pacific Aerospace Limited Model 750XL airplanes. This proposed 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 chafing of the engine fuel feed line hoses. This proposed AD would require inspecting the engine fuel feed line hoses and the electrical wiring and rerouting all fuel lines. The FAA is proposing this AD to address the unsafe condition on these products.
Amendment of Class E Airspace; Muscle Shoals, AL
Document Number: 2021-18422
Type: Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
This action amends Class E airspace extending upward from 700 feet above the surface in Muscle Shoals, AL, due to the decommissioning of the Muscle Shoals Very High Frequency Omni-Directional Radio Range Tactical Air Navigation Aid (VORTAC), and cancellation of the associated approach at Northwest Alabama Regional Airport. This action also updates the airport name under the Class E surface airspace and makes an editorial change replacing the term Airport/Facility Directory with the term Chart Supplement in the legal descriptions of associated Class E airspace. Controlled airspace is necessary for the safety and management of instrument flight rules (IFR) operations in the area.
Airworthiness Directives; Stemme AG Gliders
Document Number: 2021-18387
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for all Stemme AG Model Stemme S 12 gliders. This proposed AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as an airspeed indicator (ASI) with speed markings inconsistent with the approved and published values. This proposed AD would require inspecting the ASI markings and, depending on findings, either replacing the ASI or amending the existing aircraft flight manual (AFM) until the ASI is replaced. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; ASI Aviation (Type Certificate Previously Held by Reims Aviation S.A.) Airplanes
Document Number: 2021-18386
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for all ASI Aviation (type certificate previously held by Reims Aviation S.A.) Model F406 airplanes. This proposed 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 failure of a circuit breaker (CB) switch. This proposed AD would require replacing certain CB switches and establishing a life limit for the CB switches. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Various Airplanes
Document Number: 2021-18385
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for various airplanes modified with certain configurations of Garmin G3X Touch Electronic Flight Instrument System installed per Supplemental Type Certificate (STC) No. SA01899WI or Garmin GI 275 Multi-Function Display System (MFDS) installed per STC No. SA02658SE. This proposed AD was prompted by a report of a fuel quantity disparity between the amount of fuel indicated and the actual amount of fuel. This proposed AD would require modifying the resistive fuel probe interface. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; ASI Aviation (Type Certificate Previously Held by Reims Aviation S.A.) Airplanes
Document Number: 2021-18384
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to supersede Airworthiness Directive (AD) 2015-16-07 R1, which applies to certain Reims Aviation S.A. (type certificate now held by ASI Aviation) Model F406 airplanes. AD 2015-16- 07 R1 requires inspecting the left-hand and right-hand rudder control pedal torque tubes and replacing with a serviceable part as necessary. Since the FAA issued AD 2015-16-07 R1, the European Aviation Safety Agency (EASA) superseded its mandatory continuing airworthiness information (MCAI) to correct an unsafe condition on these products. This proposed AD would retain the requirements of AD 2015-16-07 R1, expand the applicability, and require repeating the inspections using updated procedures. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Bell Textron Inc., Helicopters
Document Number: 2021-18383
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Inc., Model 412, 412EP, and 412CF helicopters. This proposed AD was prompted by evaluation results showing flight loads that impact the collective lever fatigue life. This proposed AD would require adding a permanent life penalty for certain collective levers and prohibit installing those collective levers unless the permanent life penalty has been added. The FAA is proposing this AD to address the unsafe condition on these products.
Proposed Amendment Class D and Class E Airspace; Ardmore, OK
Document Number: 2021-18360
Type: Proposed Rule
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
This action proposes to amend the Class D and Class E airspace at Ardmore, OK. The FAA is proposing this action as the result of airspace reviews due to the decommissioning of the Arbuckle non- directional beacon (NDB). The geographic coordinates of the airport would also be updated to coincide with the FAA's aeronautical database.
Noise Certification Standards: Matternet Model M2 Aircraft
Document Number: 2021-17769
Type: Notice
Date: 2021-08-27
Agency: Federal Aviation Administration, Department of Transportation
The Federal Aviation Administration (FAA) proposes noise certification standards that would apply only to the Matternet model M2 quadcopter unmanned aircraft because there are currently no generally applicable noise certification standards for this aircraft.