[Federal Register Volume 63, Number 129 (Tuesday, July 7, 1998)]
[Rules and Regulations]
[Pages 36553-36554]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-17955]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 97-NM-72-AD; Amendment 39-10647; AD 98-14-14]
RIN 2120-AA64
Airworthiness Directives; Turbopropeller-Powered McDonnell
Douglas Model DC-3 and DC-3C Series Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to certain McDonnell Douglas Model DC-3 and DC-3C series
airplanes, that requires revising the Airplane Flight Manual (AFM) to
modify the limitation that prohibits positioning the power levers below
the flight idle stop during flight, and to provide a statement of the
consequences of positioning the power levers below the flight idle stop
during flight. This amendment is prompted by incidents and accidents
involving airplanes equipped with turboprop engines in which the ground
propeller beta range was used improperly during flight. The actions
specified by this AD are intended to prevent loss of airplane
controllability, or engine overspeed and consequent loss of engine
power caused by the power levers being positioned below the flight idle
stop while the airplane is in flight.
EFFECTIVE DATE: August 11, 1998.
ADDRESSES: Information pertaining to this amendment may be examined at
the Federal Aviation Administration (FAA), Transport Airplane
Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington;
or at the FAA, Los Angeles Aircraft Certification Office, 3960
Paramount Boulevard, Lakewood, California.
FOR FURTHER INFORMATION CONTACT: Frank Hoerman, Aerospace Engineer,
Flight Test Branch, ANM-160L, FAA, Los Angeles Aircraft Certification
Office, 3960 Paramount Boulevard, Lakewood, California 90712; telephone
(562) 527-5371; fax (562) 625-5210.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to certain McDonnell Douglas Model
DC-3 and DC-3C series airplanes was published in the Federal Register
on January 8, 1998 (63 FR 1072). That action proposed to require
revising the Limitations Section of the Airplane Flight Manual (AFM) to
prohibit the positioning of the power levers below the flight idle stop
while the airplane is in flight, and to add a statement of the
consequences of positioning the power levers below the flight idle stop
while the airplane is in flight.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were submitted in response
to the proposal or the FAA's determination of the cost to the public.
Conclusion
The FAA has determined that air safety and the public interest
require the adoption of the rule as proposed.
Interim Action
This is considered interim action until final action is identified,
at which time the FAA may consider further rulemaking.
Cost Impact
There are approximately 21 turbopropeller-powered McDonnell Douglas
Model DC-3 and DC-3C series airplanes of the affected design in the
worldwide fleet. The FAA estimates that 5 airplanes of U.S. registry
will be affected by this AD, that it will take approximately 1 work
hour per airplane to accomplish the required actions, and that the
average labor rate is $60 per work hour. Based on these figures, the
cost impact of the AD on U.S. operators is estimated to be $300, or $60
per airplane.
The cost impact figure discussed above is based on assumptions that
no operator has yet accomplished any of the requirements of this AD
action, and that no operator would accomplish those actions in the
future if this AD were not adopted.
Regulatory Impact
The regulations adopted herein will not have substantial direct
effects on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government. Therefore, in
accordance with Executive Order 12612, it is determined that this final
rule does not have sufficient federalism implications to warrant the
preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this action (1) is
not a ``significant regulatory action'' under Executive Order 12866;
(2) is not a ``significant rule'' under DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, 1979); and (3) will not have a
significant economic impact, positive or negative, on a substantial
number of small entities under the criteria of the Regulatory
Flexibility Act. A final evaluation has been prepared for this action
and it is contained in the Rules Docket. A copy of it may be obtained
from the Rules Docket at the location provided under the caption
ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration amends part 39 of
the Federal Aviation Regulations (14 CFR part 39) as follows:
[[Page 36554]]
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
98-14-14 McDonnell Douglas: Amendment 39-10647. Docket 97-NM-72-AD.
Applicability: All turbopropeller-powered McDonnell Douglas
Model DC-3 and DC-3C series airplanes, certificated in any category.
Note 1: This AD applies to each airplane identified in the
preceding applicability provision, regardless of whether it has been
modified, altered, or repaired in the area subject to the
requirements of this AD. For airplanes that have been modified,
altered, or repaired so that the performance of the requirements of
this AD is affected, the owner/operator must request approval for an
alternative method of compliance in accordance with paragraph (c) of
this AD. The request should include an assessment of the effect of
the modification, alteration, or repair on the unsafe condition
addressed by this AD; and, if the unsafe condition has not been
eliminated, the request should include specific proposed actions to
address it.
Compliance: Required as indicated, unless accomplished
previously.
To prevent loss of airplane controllability, or engine overspeed
and consequent loss of engine power caused by the power levers being
positioned below the flight idle stop while the airplane is in
flight, accomplish the following:
(a) For turbopropeller-powered McDonnell Douglas Model DC-3 and
DC-3C series airplanes on which Rolls-Royce Dart 510 engines are
installed: Within 30 days after the effective date of this AD,
revise the Limitations Section of the FAA-approved Airplane Flight
Manual (AFM) to include the following statements. This action may be
accomplished by inserting a copy of this AD into the AFM.
``Positioning of power levers below the flight idle stop (i.e.,
including ground fine pitch) while the airplane is in flight is
prohibited. Such positioning may lead to loss of airplane control or
may result in an overspeed condition with consequent loss of engine
power.''
(b) For turbopropeller-powered McDonnell Douglas Model DC-3 and
DC-3C series airplanes other than those identified in paragraph (a)
of this AD: Within 30 days after the effective date of this AD,
revise the Limitations Section of the FAA-approved Airplane Flight
Manual (AFM) to include the following statements. This action may be
accomplished by inserting a copy of this AD into the AFM.
``Positioning of power levers below the flight idle stop while
the airplane is in flight is prohibited. Such positioning may lead
to loss of airplane control or may result in an overspeed condition
with consequent loss of engine power.''
(c) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, Los Angeles Aircraft Certification
Office (ACO), FAA, Transport Airplane Directorate. Operators shall
submit their requests through an appropriate FAA Principal
Operations Inspector, who may add comments and then send it to the
Manager, Los Angeles ACO.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Los Angeles ACO.
(d) Special flight permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be accomplished.
(e) This amendment becomes effective on August 11, 1998.
Issued in Renton, Washington, on June 30, 1998.
Vi L. Lipski,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 98-17955 Filed 7-6-98; 8:45 am]
BILLING CODE 4910-13-U
