Airworthiness Directives; Raytheon Model BAe.125 Series 1000A and 1000B, and Model Hawker 1000 Series Airplanes

[Federal Register Volume 64, Number 229 (Tuesday, November 30, 1999)]
[Rules and Regulations]
[Pages 66764-66765]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-30947]



[[Page 66764]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 99-NM-176-AD; Amendment 39-11444; AD 99-25-01]
RIN 2120-AA64


Airworthiness Directives; Raytheon Model BAe.125 Series 1000A and 
1000B, and Model Hawker 1000 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 Raytheon Model BAe.125 series 1000A and 1000B, and 
Model Hawker 1000 series airplanes, that requires inspection of P1 
pitot pipes for chafing or damage, and various follow-on actions. This 
amendment is prompted by reports of P1 pitot pipes chafing against 
adjacent flight control cables. The actions specified by this AD are 
intended to prevent a hole in the P1 pitot pipes, which would lead to 
erroneous input to the instrumentation and warning systems associated 
with the pilot's instruments.

DATES: Effective January 4, 2000.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of January 4, 2000.

ADDRESSES: The service information referenced in this AD may be 
obtained from Raytheon Aircraft Company, 9709 East Central, Wichita, 
Kansas 67206. 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: Paul C. DeVore, Aerospace Engineer, 
Systems and Propulsion Branch, ACE-116W, FAA, Small Airplane 
Directorate, Wichita Aircraft Certification Office, 1801 Airport Road, 
Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 
946-4142; 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 all Raytheon Model BAe.125 series 
1000A and 1000B, and Model Hawker 1000 series airplanes, was published 
in the Federal Register on September 15, 1999 (64 FR 50018). That 
action proposed to require inspection of P1 pitot pipes for chafing or 
damage, and various follow-on actions.

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.

Cost Impact

    There are approximately 52 airplanes of the affected design in the 
worldwide fleet. The FAA estimates that 39 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 inspection, and that the 
average labor rate is $60 per work hour. Based on these figures, the 
cost impact of this AD on U.S. operators is estimated to be $2,340, 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, 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:

99-25-01  Raytheon Aircraft Company: Amendment 39-11444. Docket 99-
NM-176-AD.

    Applicability: All Model BAe.125 series 1000A and 1000B, and 
Model Hawker 1000 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 (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 a hole in the P1 pitot pipes, which would lead to 
erroneous input to the instrumentation and warning systems 
associated with the pilot's instruments, accomplish the following:

Inspections and Corrective Actions

    (a) Within 150 flight hours after the effective date of this AD, 
perform a one-time general visual inspection to detect chafing or 
damage of the P1 pitot pipes, in accordance with Raytheon Service 
Bulletin SB.34-3028, dated January 1998.

    Note 2: For the purposes of this AD, a general visual inspection 
is defined as: ``A visual examination of an interior or exterior

[[Page 66765]]

area, installation, or assembly to detect obvious damage, failure, 
or irregularity. This level of inspection is made under normally 
available lighting conditions such as daylight, hangar lighting, 
flashlight, or drop-light, and may require removal or opening of 
access panels or doors. Stands, ladders, or platforms may be 
required to gain proximity to the area being checked.''

    (1) If no chafing or damage is found, prior to further flight, 
ensure a clearance of 0.25 inch or more exists between the P1 pitot 
pipes and flight control cables. If clearance is less than 0.25 
inch, prior to further flight, reposition the P1 pitot pipes to 
achieve 0.25-inch clearance, in accordance with the service 
bulletin.
    (2) If a pitot pipe is found to be chafed or damaged, prior to 
further flight, accomplish the requirements of paragraphs (a)(2)(i), 
(a)(2)(ii), and (a)(2)(iii) of this AD.
    (i) Replace the discrepant pitot pipe with a new pipe, and 
ensure that a clearance of 0.25 inch or more exists between the 
flight control cables and the new pitot pipe, in accordance with the 
service bulletin. If clearance is less than 0.25 inch, reposition 
the P1 pitot pipes to achieve 0.25-inch clearance, in accordance 
with the service bulletin.
    (ii) Perform a general visual inspection for damage of the 
flight control cables adjacent to the area of chafing or damage of 
the P1 pitot pipes, in accordance with the service bulletin. If 
damage is found, replace the damaged flight control cables with new 
cables in accordance with Chapter 20-10-31 of the Aircraft 
Maintenance Manual.
    (iii) Perform a test of the P1 pitot system to ensure proper 
function, in accordance with the service bulletin. If the P1 pitot 
system fails the test, perform the corrective actions specified in 
Chapter 34-11-00 of the Aircraft Maintenance Manual.

Alternative Methods of Compliance

    (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, 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 3: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the Wichita ACO.

Special Flight Permits

    (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.

Incorporation by Reference

    (d) Except as provided by paragraphs (a)(2)(ii) and (a)(2)(iii) 
of this AD, the action shall be done in accordance with Raytheon 
Service Bulletin SB.34-3028, dated January 1998. 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 Raytheon Aircraft Company, 9709 East Central, Wichita, 
Kansas 67206. 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.
    (e) This amendment becomes effective on January 4, 2000.

    Issued in Renton, Washington, on November 22, 1999.
D.L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 99-30947 Filed 11-29-99; 8:45 am]
BILLING CODE 4910-13-U

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