Source: https://www.federalregister.gov/documents/2001/02/26/01-4676/special-conditions-airbus-industrie-a300-high-intensity-radiated-fields-hirf
Timestamp: 2017-11-24 12:16:16
Document Index: 369627237

Matched Legal Cases: ['art 25', 'art 25', '§\u200921', 'art 34', 'art 36', '§\u200911', '§\u200911', '§\u200921', '§\u200921', 'art 25', '§\u200921']

Federal Register :: Special Conditions: Airbus Industrie A300; High-Intensity Radiated Fields (HIRF)
Special Conditions: Airbus Industrie A300; High-Intensity Radiated Fields (HIRF)
The effective date of these special conditions is February 16, 2001. Comments must be received on or before March 28, 2001.
66 FR 11527
11527-11529 (3 pages)
Docket No. NM184
Special Conditions No. 25-174-SC
01-4676
https://www.federalregister.gov/d/01-4676 https://www.federalregister.gov/d/01-4676
These special conditions are issued for Airbus Industrie A300 airplanes modified to an Electronic Cable Specialists design. These modified airplanes will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. The Start Printed Page 11528modification incorporates the installation of dual Electronic Horizontal Situation Indicators that perform critical functions. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for the protection of these systems from the effects of high-intensity-radiated fields (HIRF). These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Comments on these special conditions may be mailed in duplicate to: Federal Aviation Administration, Transport Airplane Directorate, Attention: Rules Docket (ANM-114), Docket No. NM184, 1601 Lind Avenue SW., Renton, Washington 98055-4056; or delivered in duplicate to the Transport Airplane Directorate at the above address. All comments must be marked: Docket No. NM184. Comments may be inspected in the Rules Docket weekdays, except Federal holidays, between 7:30 a.m. and 4:00 p.m.
Meghan Gordon, FAA, Standardization Branch, ANM-113, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98055-4056; telephone (425) 227-2138; facsimile (425) 227-1149.
The FAA has determined that good cause exists for making these special conditions effective upon issuance; however, interested persons are invited to submit such written data, views, or arguments, as they may desire. Communications should identify the regulatory docket number and be submitted in duplicate to the address specified above. All communications recieved on or before the closing date for comments will be considered by the Administrator. These special conditions may be changed in light of the comments received. All comments received will be available in the Rules Docket for examination by interested persons, both before and after the closing date for comments. A report summarizing each substantive public contact with FAA personnel concerning this rulemaking will be filed in the docket. Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to these special conditions must include a self-addressed, stamped postcard on which the following statement is made: “Comments to Docket No. NM184.” The postcard will be date stamped and returned to the commenter.
On September 18, 2000, Electronic Cable Specialists, 5300 West Franklin Drive, Franklin WI, applied for a Supplemental Type Certificate (STC) to modify Airbus Industrie A300 airplanes. The Model A300 is a large transport category airplane. The Airbus A300 airplanes are powered by two General Electric Model CF6-50 turbofans with a maximum takeoff weight of 363,760 pounds. This aircraft operates with a pilot, copilot, and flight engineer and can hold up to 345 passengers. The modification incorporates the Universal Avionics Systems Corporation (UASC) EFI-550 Electronic Flight Instrument System. Dual EFI-550 flat panel displays will be installed, replacing existing electro-mechanical horizontal situation indicators (HSI's), as the primary navigation Display/HSI. The avionics/electronics and electrical systems installed in this airplane have the potential to be vulnerable to high-intensity radiated fields (HIRF) external to the airplane.
Under the provisions of 14 CFR 21.101, Electronic Cable Specialists must show that the Airbus Industrie A300 airplanes, as changed, continue to meet the applicable provisions of the regulations incorporated by reference in Type Certificate No. A35EU, or the applicable regulations in effect on the date of application for the change. The regulations incorporated by reference in the type certificate are commonly referred to as the “original type certification basis.” The regulations included in the certification basis for the Airbus Industrie A300 airplanes include Title 14, Code of Federal Regulations (14 CFR) 21.29(a)(1), based upon France/German requirements of part 25 effective February 1, 1965, plus additional requirements listed in the type certificate data sheet that are not relevant to these special conditions.
If the Administrator finds that the applicable airworthiness regulations (i.e., part 25, as amended) do not contain adequate or appropriate safety standards for the Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16.
In addition to the applicable airworthiness regulations and special conditions, these Airbus Industrie A300 airplanes must comply with the fuel vent and exhaust emission requirements of part 34 and the noise certification requirements of part 36.
Special conditions, as defined in § 11.19, are issued in accordance with § 11.38 and become part of the type certification basis in accordance with § 21.101(b)(2).
Special conditions are initially applicable to the model for which they are issued. Should Electronic Cable Specialists apply at a later date for a supplemental type certificate to modify any other model included on the same type certificate to incorporate the same novel or unusual design feature, these special conditions would also apply to the other model under the provisions of § 21.101(a)(1).
As noted earlier, the Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design will incorporate a new Electronic Horizontal Situation Indicator that will perform critical functions. This system may be vulnerable to high-intensity radiated fields external to the airplane. The current airworthiness standards of part 25 do not contain adequate or appropriate safety standards for the protection of this equipment from the adverse effects of HIRF. Accordingly, this system is considered to be a novel or unusual design feature.
To ensure that a level of safety is achieved that is equivalent to that intended by the regulations incorporated by reference, special conditions are needed for the Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design. These special conditions require that new avionics/electronics and electrical systems that perform critical functions be designed and installed to preclude component damage and interruption of function due to both the direct and indirect effects of HIRF.Start Printed Page 11529
As discussed above, these special conditions are applicable to Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design. Should Electronic Cable Specialists apply at a later date for a supplemental type certificate to modify any other model included on the same type certificate to incorporate the same novel or unusual design feature, these special conditions would apply to that model as well under the provisions of § 21.101(a)(1).
This action affects only certain novel or unusual design features on the Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design. It is not a rule of general applicability and affects only the applicant who applied to the FAA for approval of these features on the airplane.
Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the supplemental type certification basis for Airbus Industrie A300 airplanes modified to Electronic Cable Specialists design.
Issued in Renton, Washington, on February 16, 2001.
[FR Doc. 01-4676 Filed 2-23-01; 8:45 am]