[Federal Register Volume 64, Number 204 (Friday, October 22, 1999)]
[Rules and Regulations]
[Pages 56957-56959]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-27328]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 99-NM-19-AD; Amendment 39-11381; AD 99-22-03]
RIN 2120-AA64


Airworthiness Directives; British Aerospace BAe Model ATP 
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 British Aerospace BAe Model ATP airplanes, that 
requires repetitive inspections to detect chafing on the fuel manifold 
drain hose and the adjacent access panel; and corrective actions, if 
necessary; and installation of a protective spiral wrap on the fuel 
manifold drain hose. This amendment also provides for an optional 
terminating action for the repetitive inspections. This amendment is 
prompted by reports of chafing between the fuel manifold drain hose and 
the access panel due to contact between the two components over time. 
The actions specified by this AD are intended to prevent chafing within 
the engine nacelle, which could result in flammable fluid leaking into 
a zone that contains ignition sources.

DATES: Effective November 26, 1999.
    The incorporation by reference of certain publications listed in 
the regulations is approved by the Director of the Federal Register as 
of November 26, 1999.

ADDRESSES: The service information referenced in this AD may be 
obtained from British Aerospace Regional Aircraft American Support, 
13850 Mclearen Road, Herndon, Virginia 20171. 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: Norman B. Martenson, Manager, 
International Branch, ANM-116, FAA, Transport Airplane Directorate, 
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 
227-2110; fax (425) 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 certain British Aerospace BAe 
Model ATP airplanes was published in the Federal Register on August 23, 
1999 (64 FR 45925). That action proposed to require repetitive 
inspections to detect chafing on the fuel manifold drain hose and the 
adjacent access panel; and corrective actions, if necessary; and 
installation of a protective spiral wrap on the fuel manifold drain 
hose. That action also provides for an optional terminating action for 
the repetitive inspections.

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.

Correction of Address

    The FAA has been informed that the title of the location where 
service information may be obtained has changed. The FAA has made this 
change in the final rule.

Conclusion

    After careful review of the available data, including the change 
noted above, the FAA has determined that air safety and the public 
interest require the adoption of the rule with the change described 
previously. The FAA has determined that this change will neither 
increase the economic burden on any operator nor increase the scope of 
the AD.

Cost Impact

    The FAA estimates that 10 airplanes of U.S. registry will be 
affected by this AD.
    It will take approximately 2 work hours per airplane to accomplish 
the required inspection on the fuel manifold drain hose and access 
panel, at an average labor rate of $60 per work hour. Based on these 
figures, the cost impact of the inspection required by this AD on U.S. 
operators is estimated to be $1,200, or $120 per airplane, per 
inspection cycle.
    It will take approximately 1 work hour per airplane to accomplish 
the required installation of the spiral wrap on the fuel manifold drain 
hose, at an average labor rate of $60 per work hour. Required parts 
will cost approximately $10 per airplane. Based on these figures, the 
cost impact of the inspections required by this AD on U.S. operators is 
estimated to be $700, or $70 per airplane.
    The cost impact figures discussed above are based on assumptions 
that no operator has yet accomplished any of

[[Page 56958]]

the requirements of this AD action, and that no operator would 
accomplish those actions in the future if this AD were not adopted.
    Should an operator elect to accomplish the optional terminating 
option rather than continue the repetitive inspections, it will take 
approximately 7 work hours per airplane to accomplish the optional 
terminating action, at an average labor rate of $60 per work hour. 
Required parts will cost approximately $1,600 (pre-modification 35215A) 
or $2,400 (post-modification 35215A) per airplane. Based on these 
figures, the cost impact of this optional terminating action is 
estimated to be $2,020 (pre-modification 35215A) or $2,820 (post-
modification 35215A) per airplane.

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:

99-22-03  British Aerospace Regional Aircraft [Formerly Jetstream 
Aircraft Limited; British Aerospace (Commercial Aircraft) Limited]: 
Amendment 39-11381. Docket 99-NM-19-AD.

    Applicability: BAe Model ATP airplanes, except those airplanes 
on which British Aerospace Modification 10455A or 10455B (reference 
British Aerospace Service Bulletin ATP-71-15, dated December 11, 
1998) has been accomplished, 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 (c) 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 chafing within the engine nacelle, which could result 
in flammable fluid leaking into a zone that contains ignition 
sources, accomplish the following:

Repetitive Inspections and Corrective Actions

    (a) Prior to the accumulation of 3,000 total flight hours, or 
within 1 month after the effective date of this AD, whichever occurs 
later, perform the actions required in paragraphs (a)(1), (a)(2), 
and (a)(3) of this AD in accordance with British Aerospace Alert 
Service Bulletin ATP-A71-14, dated November 4, 1998. Thereafter, 
repeat the inspections required by paragraphs (a)(1) and (a)(2) of 
this AD at intervals not to exceed 1,500 flight hours, until 
accomplishment of the actions specified in paragraph (b) of this AD.
    (1) Perform an inspection of the access panel, part number (P/N) 
JD713J0037-000, to detect chafe damage. If any chafe damage is 
detected, repair the access panel in accordance with the service 
bulletin at the time specified in paragraph (a)(1)(i), (a)(1)(ii), 
or (a)(1)(iii), of this AD, as applicable.
    (i) If the damage has reduced the skin thickness by 10 percent 
or less: Repair within 600 flight hours.
    (ii) If the damage has reduced the thickness of the skin by more 
than 10 percent, but less than 20 percent: Repair within 100 flight 
hours.
    (iii) If the damage has reduced the thickness of the skin by 
more than 20 percent: Repair prior to further flight.
    (2) Perform an inspection of the fuel manifold drain hose, P/N 
JD007J0983-000 (C37351), to detect chafe damage. If any chafe damage 
is detected, either replace the fuel manifold drain hose with a new 
fuel manifold drain hose, P/N JD007J0983-000, in accordance with the 
service bulletin at the time specified in paragraph (a)(2)(i), 
(a)(2)(ii), or (a)(2)(iii) of this AD, as applicable; or accomplish 
the replacement specified in paragraph (b) of this AD. Replacement 
of the fuel manifold drain in accordance with paragraph (b) of this 
AD constitutes terminating action for the repetitive inspections 
required by this AD.
    (i) If there are signs of worn or polished strands in the outer 
braid, but no strand is broken: Replace within 1,500 flight hours.
    (ii) If five or less strands are broken: Replace within 300 
flight hours.
    (iii) If more than five strands are broken or any sign of fuel 
leakage exists: Replace prior to further flight.
    (3) Install a protective spiral binding, P/N EFWRAP-125, on the 
fuel manifold drain hose.

Optional Terminating Action

    (b) Replacement of the fuel manifold drain hose, P/N JD007J0983-
000 (C37351), with a new, improved drain hose, P/N JD007J2377-000 
(C44311), in accordance with British Aerospace Service Bulletin ATP-
71-15, dated December 11, 1998, constitutes terminating action for 
the requirements of this AD.

Alternative Methods of Compliance

    (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, International Branch, ANM-116, 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, International 
Branch, ANM-116.

    Note 2: Information concerning the existence of approved 
alternative methods of compliance with this AD, if any, may be 
obtained from the International Branch, ANM-116.

Special Flight Permits

    (d) 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

    (e) The actions shall be done in accordance with British 
Aerospace Alert Service Bulletin ATP-A71-14, dated November 4, 1998; 
or British Aerospace Service Bulletin ATP-71-15, dated December 11, 
1998, 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 British 
Aerospace Regional Aircraft American Support, 13850 Mclearen Road, 
Herndon, Virginia 20171. Copies may be inspected at the FAA, 
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,

[[Page 56959]]

Washington; or at the Office of the Federal Register, 800 North 
Capitol Street, NW., suite 700, Washington, DC.
    (f) This amendment becomes effective on November 26, 1999.

    Issued in Renton, Washington, on October 14, 1999.
D.L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 99-27328 Filed 10-21-99; 8:45 am]
BILLING CODE 4910-13-U