[Federal Register Volume 61, Number 232 (Monday, December 2, 1996)]
[Rules and Regulations]
[Pages 63702-63704]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-29988]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 96-NM-173-AD; Amendment 39-9835; AD 96-24-11]
RIN 2120-AA64
Airworthiness Directives; Israel Aircraft Industries (IAI), Ltd.,
Model 1123, 1124, and 1124A 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 all IAI, Ltd., Model 1123, 1124, and 1124A series
airplanes, that requires repetitive inspections of the aileron push-
pull tubes for excessive wear and the guide rollers for smooth
rotation; and repair or replacement of worn parts with serviceable
parts. This amendment is prompted by reports of excessive wear on the
aileron push-pull tube in the area of the guide rollers. The actions
specified by this AD are intended to prevent such wear, which could
result in uneven movement of the control wheel, perforation of the
aileron push-pull tube, and consequent reduced roll control of the
airplane.
DATES: Effective January 6, 1997.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of January 6, 1997.
[[Page 63703]]
ADDRESSES: The service information referenced in this AD may be
obtained from Technical Publications, Astra Jet Corporation, 77
McCullough Drive, Suite 11, New Castle, Delaware 19720. This
information may be examined at the Federal Aviation Administration
(FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue,
SW., Renton, Washington; or at the Office of the Federal Register, 800
North Capitol Street, NW., suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Tim Dulin, Aerospace Engineer,
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206)
227-2141; fax (206) 227-1149.
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 all IAI, Ltd., Model 1123, 1124,
and 1124A series airplanes was published in the Federal Register on
September 4, 1996 (61 FR 46576). That action proposed to require
repetitive inspections of the left and right aileron push-pull tubes
for excessive wear and the guide rollers for smooth rotation;
replacement of the push-pull tubes with serviceable parts, if
necessary; and repair or replacement of the guide rollers with
serviceable parts, if necessary.
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.
Cost Impact
The FAA estimates that 213 IAI, Ltd., Model 1123, 1124, and 1124A
series 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 inspections, 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 $12,780, or $60 per airplane, per
inspection.
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, 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 the following new
airworthiness directive:
96-24-11 Israel Aircraft Industries (IAI), LTD.: Amendment 39-9835.
Docket 96-NM-173-AD.
Applicability: All IAI, Ltd., Model 1123, 1124, and 1124A 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
otherwise 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 (b) 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 excessive wear of the aileron push-pull tube, which
could result in uneven movement of the control wheel, perforation of
the aileron push-pull tube, and consequent reduced roll control of
the airplane; accomplish the following:
(a) Within 50 hours time-in-service after the effective date of
this AD, inspect the left and right aileron push-pull tubes for wear
and the guide rollers for smoothness of rotation, in accordance with
Westwind Service Bulletin SB 1123-27-043, dated June 12, 1995 (for
Model 1123 series airplanes); or Service Bulletin SB 1124-27-129,
dated June 12, 1995 (for Model 1124 and 1124A series airplanes); as
applicable.
(1) If no wear is detected or if wear is within the limits
specified in the applicable service bulletin, repeat the inspections
thereafter at intervals not to exceed 600 hours time-in-service.
(2) If any wear is detected and that wear is outside the limits
specified in the applicable service bulletin, prior to further
flight, replace the tube with serviceable parts in accordance with
the applicable service bulletin. Thereafter, repeat the inspections
at intervals not to exceed 600 hours time-in-service.
(3) If the guide rollers do not rotate smoothly, accomplish
either paragraph (a)(3)(i) or (a)(3)(ii) of this AD. Thereafter,
repeat the inspections at intervals not to exceed 600 hours time-in-
service.
(i) Prior to further flight, repair the guide roller in
accordance with the applicable service bulletin. Or
(ii) Prior to further flight, replace the guide roller with
serviceable parts in accordance with the applicable service
bulletin.
(b) 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, Manager, Standardization Branch,
ANM-113, FAA, Transport Airplane Directorate. Operators shall submit
their requests through an appropriate FAA Principal Maintenance
Inspector, who may add comments and then send it to the Manager,
Standardization Branch, ANM-113.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Standardization Branch, ANM-113.
(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 airplane to a location where
the requirements of this AD can be accomplished.
(d) The actions shall be done in accordance with Westwind
Service Bulletin SB 1123-27-043, dated June 12, 1995; or Westwind
Service Bulletin SB 1124-27-129, dated June
[[Page 63704]]
12, 1995; as applicable. 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
Technical Publications, Astra Jet Corporation, 77 McCullough Drive,
Suite 11, New Castle, Delaware 19720. Copies may be inspected at the
FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington; or at the Office of the Federal Register, 800 North
Capitol Street, NW., suite 700, Washington, DC.
(e) This amendment becomes effective on January 6, 1996.
Issued in Renton, Washington, on November 18, 1997.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 96-29988 Filed 11-29-96; 8:45 am]
BILLING CODE 4910-13-U
