[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]
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