CFR Final Rule

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[Federal Register: February 5, 1976 (Volume 41, Number 25)]
[Page 5290]

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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Parts 27 and 29
[Docket No. 14625; Amendment Nos. 27-10, 29-11]

Aeronautics and Space

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AGENCY: Federal Aviation Administration, DOT
ACTION: Final Rule
Amendment No. 2: Rotorcraft Anticollision Light Standards

SUMMARY: The purpose of these amendments to Parts 27 and 29 of the Federal Aviation Regulations is to revise the type certification requirements for rotorcraft anti-collision lights.
EFFECTIVE DATE: February 5, 1976.

SUPPLEMENTARY INFORMATION: These amendments are based upon a Notice of Proposed Rule Making (Airworthiness Review Program Notice No. 5: Equipment and Systems Proposals; Notice 75-23) published in the Federal Register on May 27, 1975 (40 FR 23048) and are the second in a series of amendments to be issued as part of the First Biennial Airworthiness Review Program (ref. Notice 74-5, 39 FR 5785). The first series of amendments were published in the Federal Register on January 14, 1975 (40 FR 2576). Numerous comments were received in response to Airworthiness Review Program Notice No. 5, which the FAA is currently reviewing. However, the FAA has currently under consideration an application for a type certificate of a rotorcraft for which the current anti-collision light requirements would create objectionable multiple reflections and from which the applicant has requested relief. Therefore, considering that the rotorcraft may be type certificated before the final disposition of Airworthiness Review Program Notice No. 5 (Notice 75-23) can be completed, the FAA believes it appropriate to expedite rulemaking action with respect to the anticollision light standards in Proposal Nos. 5-50 and 5-63.
Interested persons have been afforded an opportunity to participate in the making of these amendments and due consideration has been given to all matter presented. A number of substantive changes have been made to the proposed rules based upon the relevant comments received and upon further review within the FAA. Except for the substantive changes discussed hereinafter, these amendments and the reasons therefore are the same as those contained in Proposal Nos. 5-50 and 5-63.
Several commentators objected to proposed amendments to Secs. 27.1401(b) and 29.1401(b) concerning the increase in field of coverage requirements. The FAA believes, after considering the comments and upon further review within the FAA, that the increase in field of coverage for rotorcraft anticollision lights even at the reduced intensity proposed would result in increased reflections in the cockpit from the rotor blades. These increased reflections could seriously interfere with the crew's vision. Accordingly, the portions of Proposal Nos. 5-50 and 5-63 concerning an increase in the field of coverage from 30 to 75 for rotorcraft anticollision lights are withdrawn.
One commentator stated that any proposal concerning anticollision lights should be discussed with the International Civil Aviation Organization (ICAO). However, the proposals as adopted will provide the same color requirement as the international standard for airplanes. With regard to intensity levels, which are not an international standard but are set forth in an ICAO acceptable means of compliance for airplanes, the adopted intensity levels would still meet that acceptable means of compliance.
No other adverse comment was received on proposed Secs. 27.1401(d) and 29.1401(d) which would require that the color of anticollision lights installed on rotorcraft be aviation red. Accordingly, proposed Secs. 27.1401(d) and 29.1401(d) are adopted without substantive change.
No other adverse comment was received on proposed Secs. 27.1401(f) and 29.1401(f) that would reduce the minimum effective intensity requirements for anticollision lights installed on rotorcraft. Accordingly, proposed Secs. 27.1401(f) and 29.1401(f) are adopted except that the minimum effective intensity requirement for the 30 to 75 range has been deleted as discussed herein.
These amendments are in the interest of safety because they will provide for the type certification of rotorcraft with less objectionable multiple reflections caused by the higher intensity levels. Since they also relieve a restriction, I find that good cause exists for making them effective in less than 30 days.
(Secs. 313(a), 601, and 608 of the Federal Aviation Act of 1958 (49 U.S.C. 1354(a), 1421, and 1423), and of section 6(c) of the Department of Transportation Act (49 U.S.C. 1655 (c)).)

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In consideration of the foregoing, Parts 27 and 29 of the Federal Aviation Regulations are amended as follows, effective February 5, 1976:

1. By revising Sec. 27.1401(d) and (f) to read as follows:

Sec. 27.1401 Anticollision light system.
* * * * *
(d) Color. Each anticollision light must be aviation red and must meet the applicable requirements of Sec. 27.1397.
* * * * *
(f) Minimum effective intensities for anticollision light. Each anticollision light effective intensity must equal or exceed the applicable values in the following table:

Angle above or below the horizontal plane:Effective intensity (candles)
0 to 5150
5 to 1090
10 to 2030
20 to 3015

2. By revising Secs. 29.1401(d) and (f) to read as follows:

Sec. 29.1401 Anticollision light system.
* * * * *
(d) Color. Each anticollision light must be aviation red and must meet the applicable requirements of Sec. 29.1397.
* * * * *
(f) Minimum effective intensities for anticollision light. Each anticollision light effective intensity must equal or exceed the applicable values in the following table:

Angle above or below the horizontal plane:Effective intensity (candles)
0 to 5150
5 to 1090
10 to 2030
20 to 3015


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Issued in Washington, DC, on February 3, 1976.
James E. Dow,
Acting Administrator.
[FR Doc. 76-3749 Filed 2-4-76; 10:42 am]


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Notice of Proposed Rulemaking Actions:

Notice of Invitation to Submit Proposals. Notice No. 74-5; Issued on 02/12/74.
Notice of Compilation of Proposals. Notice No. 74-5A; Issued on 05/22/74.
Notice of Availability of Agenda. Notice No. 74-5B; Issued on 10/03/74.
Notice of Clarifying Revisions. Notice No. 74-33; Issued on 10/03/74.
Notice of Conference. Notice No. 74-5C; Issued on 11/25/74.
Notice of Availability of Conference Summary. Notice No. 74-5D: Issued on 02/04/75.
Notice of Airworthiness Review Program No. 2; Notice No. 75-10; Issued on 02/27/75.
Notice of Airworthiness Review Program No. 3; Notice No. 75-19; Issued on 05/13/75.
Notice of Airworthiness Review Program No. 4; Notice No. 75-20; Issued on 05/13/75.
Notice of Airworthiness Review Program No. 5; Notice No. 75-23; Issued on 05/19/75.
Notice of Airworthiness Review Program No. 6; Notice No. 75-25; Issued on 05/29/75.
Notice of Airworthiness Review Program No. 7; Notice No. 75-26; Issued on 06/09/75.
Notice of Airworthiness Review Program No. 8; Notice No. 75-31; Issued on 06/30/75.


Other Final Rule Actions:

Final Rule. Docket No. 14324, 14606, 14625, 14685, 14779; Issued on 10/20/78.
Final Rule. Docket No. 14625; Issued on 07/11/77.