[Federal Register Volume 63, Number 81 (Tuesday, April 28, 1998)]
[Rules and Regulations]
[Pages 23200-23201]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-11008]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 97-CE-132-AD; Amendment 39-10495; AD 98-09-14]
RIN 2120-AA64
Airworthiness Directives; Diamond Aircraft Industries Models HK
36 TTS and HK 36 TTC Sailplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD) that
applies to certain Diamond Aircraft Industries (Diamond) Models HK 36
TTS and HK 36 TTC sailplanes. This AD requires inspecting the engine
turbocharger oil-pressure line for the correct banjo bolt. The correct
banjo bolt will have a valve seat, instead of a built-in orifice. If
the banjo bolt does not have a valve seat, then this action will
require replacing the banjo bolt with one that has a valve seat, and
repairing or replacing the turbocharger. This AD is the result of
mandatory continuing airworthiness information (MCAI) issued by the
airworthiness authority for Austria. The actions specified by this AD
are intended to prevent possible loss of engine power, which could
result in possible loss of control of the sailplane.
DATES: Effective June 14, 1998.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of June 14, 1998.
ADDRESSES: Service information that applies to this AD may be obtained
from Diamond Aircraft Industries, G.m.b.H., N.A. Otto-Strabe 5, A-2700,
Wiener Neustadt, Austria. This information may also be examined at the
Federal Aviation Administration (FAA), Central Region, Office of the
Regional Counsel, Attention: Rules Docket No. 97-CE-132-AD, Room 1558,
601 E. 12th Street, Kansas City, Missouri 64106; or at the Office of
the Federal Register, 800 North Capitol Street, NW, suite 700,
Washington, DC.
FOR FURTHER INFORMATION CONTACT: Mr. Mike Kiesov, Aerospace Engineer,
Small Airplane Directorate, Aircraft Certification Service, FAA, 1201
Walnut, suite 900, Kansas City, Missouri 64106; telephone: (816) 426-
6934; facsimile: (816) 426-2169.
SUPPLEMENTARY INFORMATION:
Events Leading to the Issuance of This AD
A proposal to amend part 39 of the Federal Aviation Regulations (14
CFR part 39) to include an AD that would apply to certain Diamond
Models HK 36 TTS and HK 36 TTC sailplanes that are equipped with
Bombardier ROTAX (ROTAX) 914 F series engines, serial numbers 4,420.011
through 4,420.058, was published in the Federal Register as a notice of
proposed rulemaking (NPRM) on February 11, 1998 (63 FR 6882). The NPRM
proposed to require inspecting the banjo bolt for a valve seat. If the
banjo bolt does not have a valve seat, this AD will require replacing
the banjo bolt, and repairing or replacing the turbocharger.
Accomplishment of the proposed installation will be in accordance with
Bombardier ROTAX Technical Bulletin No. 914-04, dated August, 1997.
The NPRM was the result of mandatory continuing airworthiness
information (MCAI) issued by the airworthiness authority for Austria.
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were received on the
proposed rule or the FAA's determination of the cost to the public.
The FAA's Determination
After careful review of all available information related to the
subject presented above, the FAA has determined that air safety and the
public interest require the adoption of
[[Page 23201]]
the rule as proposed except for minor editorial corrections. The FAA
has determined that these minor corrections will not change the meaning
of the AD and will not add any additional burden upon the public than
was already proposed.
Cost Impact
The FAA estimates that 4 sailplanes in the U.S. registry will be
affected by this AD, that it will take approximately 1 workhour per
sailplane to accomplish this inspection, and that the average labor
rate is approximately $60 an hour. Based on these figures, the total
cost impact of this AD on U.S. operators is estimated to be $240 or $60
per sailplane.
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 copy of the final evaluation prepared for this
action is contained in the Rules Docket. A copy of it may be obtained
by contacting the Rules Docket at the location provided under the
caption ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, 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:
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 a new airworthiness directive
(AD) to read as follows:
98-09-14 Diamond Aircraft Industries: Amendment 39-10495; Docket
No. 97-CE-132-AD.
Applicability: Model HK 36 TTS and HK 36 TTC sailplanes, all
serial numbers, certificated in any category, that are equipped with
Bombardier ROTAX 914 F series engines, serial numbers 4,420.011
through 4,420.058.
Note 1: This AD applies to each sailplane 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 sailplanes 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 (d) 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 within the next 10 hours time-in-service
(TIS) after the effective date of this AD, unless already
accomplished.
To prevent possible loss of engine power, which could result in
possible loss of control of the sailplane, accomplish the following:
(a) Inspect the Bombardier ROTAX engine's turbocharger oil-
pressure line for a banjo bolt with a valve seat, part number (P/N)
941 782 (or an FAA-approved equivalent part number), in accordance
with the Instructions section of Bombardier ROTAX Technical Bulletin
No. 914-04, dated August, 1997.
Note 2: An incorrect banjo bolt would have a built-in orifice,
instead of a valve seat.
(b) If an incorrect banjo bolt is installed, prior to further
flight, replace the banjo bolt with one that has P/N 941 782 (or an
FAA-approved equivalent part number), and repair or replace the
turbocharger in accordance with the Instructions section of
Bombardier ROTAX Technical Bulletin No. 914-04, dated August, 1997.
(c) 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 sailplane to a location where
the requirements of this AD can be accomplished.
(d) An alternative method of compliance or adjustment of the
compliance time that provides an equivalent level of safety may be
approved by the Manager, Small Airplane Directorate, FAA, 1201
Walnut, suite 900, Kansas City, Missouri 64106. The request shall be
forwarded through an appropriate FAA Maintenance Inspector, who may
add comments and then send it to the Manager, Small Airplane
Directorate.
Note 3: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Small Airplane Directorate.
(e) Questions or technical information related to Bombardier
ROTAX Technical Bulletin No. 914-04, dated August 1997, should be
directed to Diamond Aircraft Industries, G.m.b.H., N.A. Otto-Strabe
5, A-2700, Wiener Neustadt, Austria. This service information may be
examined at the FAA, Central Region, Office of the Regional Counsel,
Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106.
(f) The inspection and replacement required by this AD shall be
done in accordance with Bombardier ROTAX Technical Bulletin No. 914-
04, dated August, 1997. This incorporation by reference was approved
by the Director of the Federal Register in accordance with 5 U.S.C.
552(a) and 1 CFR part 51. Copies may be obtained from Diamond
Aircraft Industries, G.m.b.H., N.A. Otto-Strabe 5, A-2700, Wiener
Neustadt, Austria. Copies may be inspected at the FAA, Central
Region, Office of the Regional Counsel, Room 1558, 601 E. 12th
Street, Kansas City, Missouri, or at the Office of the Federal
Register, 800 North Capitol Street, NW, suite 700, Washington, DC.
Note 4: The subject of this AD is addressed in Austrian AD No.
90, undated.
(g) This amendment becomes effective on June 14, 1998.
Issued in Kansas City, Missouri, on April 17, 1998.
James A. Jackson,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 98-11008 Filed 4-27-98; 8:45 am]
BILLING CODE 4910-13-U
