54368 Federal Register / Vol. 62, No. 202 / Monday, October 20, 1997 / Rules and Regulations

Service bulletin referenced and date Page No.

Revision

level

shown on

page

Date shown on

page

SB–235–27–05, Revision 1, September 29, 1993 ................................................................................ 1, 2 ........ 1 .............. September 29,

1993.

3–23 ....... Original .... February 5,

1993.

SB–235–27–05M, Revision 2, January 25, 1996 .................................................................................. 1 ............. 2 .............. January 25,

1996.

2–23 ....... Original .... October 28,

1991.

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 Construcciones Aeronauticas, S.A.,

Getafe, Madrid, Spain. 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.

Note 4: The subject of this AD is addressed

in Spanish airworthiness directive 06/94,

dated August 1994.

(h) This amendment becomes effective on

November 24, 1997.

Issued in Renton, Washington, on October

8, 1997.

James V. Devany,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–27222 Filed 10–17–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 96–NM–274–AD; Amendment

39–10158; AD 97–21–05]

RIN 2120–AA64

Airworthiness Directives; Raytheon

Model DH.125–400A; BH.125–400A and

–600A; HS.125–600A and –700A; BAe

125–800A Series Airplanes; and

Hawker 800 and Hawker 800 XP Series

Airplanes Including Military Variants

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Raytheon Model

DH.125–400A; BH.125–400A and

–600A; HS.125–600A and –700A; BAe

125–800A series airplanes; and Hawker

800 and Hawker 800 XP series airplanes

(including military variants C29A,

U125, U125A). This amendment

requires a one-time inspection to

determine if certain high pressure

oxygen hose assemblies are installed,

and, if installed, replacement of those

hose assemblies with new, improved

hose assemblies. This amendment is

prompted by a report that certain high

pressure oxygen hose assemblies are

susceptible to leakage due to those hose

assemblies not meeting design

specifications during manufacturing.

The actions specified by this AD are

intended to prevent leaks in high

pressure oxygen hose assemblies,

which, if not detected and corrected,

could result in insufficient oxygen

available to the passengers or crew if the

cabin pressure altitude should rise to a

level requiring emergency oxygen.

DATES: Effective November 24, 1997.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of November

24, 1997.

ADDRESSES: The service information

referenced in this AD may be obtained

from Raytheon Aircraft Company,

Manager Service Engineering, Hawker

Customer Support Department, 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:

Michael Imbler, Aerospace Engineer,

Systems and Propulsion Branch, ACE–

115W, FAA, Small Airplane Directorate,

Wichita Aircraft Certification Office,

1801 Airport Road, Room 100, MidContinent Airport, Wichita, Kansas

67209; telephone (316) 946–4147; 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 Raytheon

Model DH.125–400A; BH.125–400A and

–600A; HS.125–600A and –700A; BAe

125–800A series airplanes; and Hawker

800 and Hawker 800 XP series airplanes

(including military variants C29A,

U125, U125A), was published in the

Federal Register on July 24, 1997 (62 FR

39787). That action proposed to require

a one-time inspection to determine if

certain high pressure oxygen hose

assemblies are installed, and, if

installed, replacement of those hose

assemblies with new, improved hose

assemblies.

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 404 Raytheon

Model DH.125–400A; BH.125–400A and

–600A; HS.125–600A and –700A; BAe

125–800A; and Hawker 800 and Hawker

800 XP series airplanes (including

military variants) of U.S. registry will be

affected by this AD.

It will take approximately 1 work

hour per airplane to accomplish the

required actions, at an average labor rate

of $60 per work hour. Based on these

figures, the cost impact of the initial

inspection required by this AD on U.S.

operators is estimated to be $24,240, or

$60 per airplane.

Should an operator be required to

accomplish the replacement, it would

take approximately 1 work hour per

airplane to accomplish it, at an average

labor rate of $60 per work hour.

Required parts would be supplied by

the manufacturer at no cost to the

operators. Based on these figures, the

cost impact of the replacement on U.S.

operators is estimated to be $60 per

airplane.
Federal Register / Vol. 62, No. 202 / Monday, October 20, 1997 / Rules and Regulations 54369

The cost impact figures discussed

above are 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.

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

97–21–05 Raytheon Aircraft Company

(Formerly Beech, Raytheon Corporate

Jets, British Aerospace, Hawker

Siddeley, et al.): Amendment 39–10158.

Docket 96–NM–274–AD.

Applicability: All Model DH.125–400A,

BH.125–400A and –600A, HS.125–600A and

–700A, and BAe 125–800A series airplanes;

and Model Hawker 800 and Hawker 800 XP

series airplanes (including Military Variants

C29A, U125, and U125A airplanes); having

serial numbers 1 through 258294 inclusive;

on which Modification 252036 has been

installed with a high pressure oxygen hose

assembly having part number WKA 34609;

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.

Note 2: Raytheon (Beech) Model DH.125–

400B, BH.125–400B and –600B, HS. 125–

600B and –700B, and BAe 125–800B series

airplanes are similar in design to the

airplanes that are subject to the requirements

of this AD, and therefore, also may be subject

to the unsafe condition addressed by this AD.

However, as of the effective date of this AD,

those models are not type certificated for

operation in the United States. Airworthiness

authorities of countries in which those

models are approved for operation should

consider adopting corrective action,

applicable to these models, that is similar to

the corrective action required by this AD.

Compliance: Required as indicated, unless

accomplished previously.

To prevent leaks in high pressure oxygen

hose assemblies, which could result in

insufficient oxygen quantity available to the

passengers or crew if the cabin pressure

altitude should rise to a level requiring

emergency oxygen, accomplish the following:

(a) Within 90 days after the effective date

of this AD, perform a one-time inspection to

determine whether any high pressure oxygen

hose assembly having a discrepant part

number WKA 34609 is installed, in

accordance with Raytheon Service Bulletin

SB.35–46, dated September 30, 1996. If no

discrepant part number is detected, no

further action is required by this AD. If any

hose assembly having discrepant part

number WKA 34609 is installed, prior to

further flight, replace the hose assembly with

a hose assembly having part number 58179–

101, in accordance with the service bulletin.

(b) As of the effective date of this AD, no

person shall install a high pressure oxygen

hose having part number WKA 34609 on any

airplane.

(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 3: 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 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.

(e) The actions shall be done in accordance

with Raytheon Service Bulletin SB.35–46,

dated September 30, 1996. 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, Manager Service

Engineering, Hawker Customer Support

Department, 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

November 24, 1997.

Issued in Renton, Washington, on October

8, 1997.

James V. Devany,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–27223 Filed 10–17–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 96–NM–64–AD; Amendment

39–10157; AD 97–21–04]

RIN 2120–AA64

Airworthiness Directives; Airbus Model

A310 and A300–600 Series Airplanes

Equipped With Pratt & Whitney

Turbofan Engines

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Airbus Model

A310 and A300–600 series airplanes,

that requires flow checks of the

hydraulic pump drain system to ensure

that the system is not clogged, and

correction of any discrepancy.

Additionally, this amendment requires

replacement of the existing seal of the

accessory gearbox with a new, improved

seal assembly; this replacement

terminates the requirement for repetitive