[Federal Register Volume 59, Number 131 (Monday, July 11, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-15735]
[[Page Unknown]]
[Federal Register: July 11, 1994]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 94-NM-18-AD; Amendment 39-8958; AD 94-14-06]
Airworthiness Directives; Beech Model 400A and 400T (Military T-
1A) 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 Beech Model 400A and 400T (military T-1A)
airplanes, that requires an inspection of certain flap roller retention
components to detect discrepant or missing parts, and replacement of
discrepant or missing parts; and installation of new washers on the
roller attach bolts. This amendment is prompted by reports of
undersized tabs on some lock washers, and tabs or inner tangs missing
from the washers installed on the flap roller bolts. Such discrepancies
defeat the locking function of the tab washer, and could result in loss
of the nut and flap roller. The actions specified by this AD are
intended to prevent loss of the main or aft flap surface and subsequent
reduced controllability of the airplane.
DATES: Effective August 10, 1994.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of August 10, 1994.
ADDRESSES: The service information referenced in this AD may be
obtained from Beech Aircraft Corporation, P.O. Box 85, Wichita, Kansas
67201-0085. 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 FAA, Small Airplane
Directorate, Wichita Aircraft Certification Office, 1801 Airport Road,
Room 100, Mid-Continent Airport, Wichita, Kansas; or at the Office of
the Federal Register, 800 North Capitol Street NW., suite 700,
Washington, DC.
FOR FURTHER INFORMATION CONTACT: Larry Engler, Aerospace Engineer,
Airframe Branch, ACE-120W, FAA, Small Airplane Directorate, Wichita
Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-
Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4122; fax
(316) 946-4407.
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 Beech Model 400A and 400T
(military T-1A) airplanes was published in the Federal Register on
March 15, 1994 (59 FR 11939). That action proposed to require an
inspection of certain flap roller retention components to detect
discrepant or missing parts, and replacement of discrepant or missing
parts with new or serviceable parts; and installation of new washers,
tab washers, and flat washers on the roller attach bolts.
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.
The FAA has determined that air safety and the public interest require
the adoption of the rule as proposed.
There are approximately 122 Model Beech 400A and 400T (military T-
1A) airplanes of the affected design in the worldwide fleet. The FAA
estimates that 102 airplanes of U.S. registry will be affected by this
AD, that it will take approximately 8 work hours per airplane to
accomplish the required actions, and that the average labor rate is $55
per work hour. Required parts will cost approximately $100 per
airplane. Based on these figures, the total cost impact of the AD on
U.S. operators is estimated to be $55,080, or $540 per airplane.
The total 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.
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. App. 1354(a), 1421 and 1423; 49 U.S.C.
106(g); and 14 CFR 11.89.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
94-14-06 Beech Aircraft Corporation: Amendment 39-8958. Docket 94-
NM-18-AD.
Applicability: Model 400A airplanes, serial numbers RK-1 through
RK-79 inclusive; and Model 400T (military T-1A) airplanes, serial
numbers TT-1 through TT-42 inclusive, and TT-44; certificated in any
category.
Compliance: Required as indicated, unless accomplished
previously.
To prevent loss of the main or aft flap surface and subsequent
reduced controllability of the airplane, accomplish the following:
(a) Within 200 hours time-in-service after the effective date of
this AD, accomplish the requirements of paragraphs (a)(1) and (a)(2)
of this AD in accordance with Beech Service Bulletin No. 2522, dated
January 1994.
(1) Perform an inspection of the flap roller retention
components to detect discrepant or missing parts; and, prior to
further flight, replace any discrepant or missing part with a new or
serviceable part.
(2) Install new washers, new tab washers, and new flat washers
on the roller attach bolts.
(b) As of the effective date of this AD, no person shall install
a bolt, part number 45A97115-1 or 45A97115-51; or a tab washer, part
number 168AS-06-2; on any airplane unless the requirements of
paragraph (a)(1) of this AD have been accomplished on that bolt or
tab washer.
(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, Wichita Aircraft Certification
Office (ACO), FAA, Small 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, Wichita ACO.
Note: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Wichita ACO.
(d) Special flight permits may be issued in accordance with
Sec. Sec. 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) The inspection, replacement, and installation shall be done
in accordance with Beech Service Bulletin No. 2522, dated January
1994. 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 Beech Aircraft Corporation,
P.O. Box 85, Wichita, Kansas 67201-0085. Copies may be inspected at
the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW.,
Renton, Washington; or at the FAA, Small Airplane Directorate,
Wichita Aircraft Certification Office, 1801 Airport Road, Room 100,
Mid-Continent Airport, Wichita, Kansas; or at the Office of the
Federal Register, 800 North Capitol Street NW., suite 700,
Washington, DC.
(f) This amendment becomes effective on August 10, 1994.
Issued in Renton, Washington, on June 23, 1994.
S.R. Miller,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 94-15735 Filed 7-8-94; 8:45 am]
BILLING CODE 4910-13-U
