Federal Register / Vol. 73, No. 197 / Thursday, October 9, 2008 / Rules and Regulations 59491 

SW., Renton, Washington; or at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at NARA, call 202–741–6030, 

or go to: http://www.archives.gov/federalregister/cfr/ibr-locations.html. 

Issued in Renton, Washington, on 

September 29, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–23573 Filed 10–8–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

(DOT) 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–1067; Directorate 

Identifier 2008–CE–052–AD; Amendment 

39–15688; AD 2008–21–04] 

RIN 2120–AA64 

Airworthiness Directives; Hawker 

Beechcraft Corporation Model 390 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Hawker Beechcraft Corporation Model 

390 airplanes. This AD requires you to 

modify the cabin barometric pressure 

switch and cabin altitude high switch 

installations and perform a functional 

test of the switches and related systems. 

This AD results from the possibility of 

barometric pressure switch electrical 

connections being incorrectly connected 

or inadvertently disconnected. We are 

issuing this AD to modify the cabin 

barometric pressure switch and cabin 

altitude high switch to prevent them 

from becoming incorrectly connected or 

inadvertently disconnected, which may 

result in no CABIN ALT HI 

annunciation in the cockpit and no 

automatic deployment of the cabin 

oxygen masks. This failure could lead to 

incapacitation of the crew due to 

hypoxia with possible inability to 

control the airplane. 

DATES: This AD becomes effective on 

October 20, 2008. 

On October 20, 2008, the Director of 

the Federal Register approved the 

incorporation by reference of certain 

publications listed in this AD. 

We must receive any comments on 

this AD by December 8, 2008. 

ADDRESSES: Use one of the following 

addresses to comment on this AD. 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

To get the service information 

identified in this AD, contact Hawker 

Beechcraft Corporation, P.O. Box 85, 

Wichita, Kansas 67201–0085; telephone: 

(800) 429–5372 or (316) 676–3140; 

http://pubs.hawkerbeechcraft.com. 

To view the comments to this AD, go 

to http://www.regulations.gov. The 

docket number is FAA–2008–1067; 

Directorate Identifier 2008–CE–052–AD. 

FOR FURTHER INFORMATION CONTACT: Erik 

Brown, Aerospace Engineer, Wichita 

Aircraft Certification Office, 1801 

Airport Road, Room 100, Wichita, 

Kansas 67209; telephone: (316) 946– 

4132; fax: (316) 946–4107. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We received reports of three 

occurrences of incorrectly connected 

barometric pressure switches on Hawker 

Beechcraft Corporation Model 390 

airplanes. This issue was discovered 

when an unannunciated cabin altitude 

high event occurred on one of the 

affected airplanes. Because the electrical 

connections of the barometric switches 

are identical, they have the potential of 

being incorrectly connected. Also, the 

wire cannot be positively secured to the 

switch, and it may become 

inadvertently disconnected. Either 

condition could cause loss of ability to 

annunciate a cabin altitude high 

condition. 

This condition, if not corrected, could 

result in no CABIN ALT HI 

annunciation in the cockpit and no 

automatic deployment of the cabin 

oxygen masks. This failure could lead to 

incapacitation of the crew due to 

hypoxia with possible inability to 

control the airplane. 

Relevant Service Information 

We reviewed Hawker Beechcraft 

Mandatory Service Bulletin SB 21–3899, 

issued: May 2008. The service 

information describes procedures for 

modifying the cabin barometric pressure 

switch and cabin altitude high switch 

installations and performing a 

functional test of the switches and 

related systems. 

FAA’s Determination and Requirements 

of this AD 

We are issuing this AD because we 

evaluated all the information and 

determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. This AD requires you to 

modify the cabin barometric pressure 

switch and cabin altitude high switch 

installations and perform a functional 

test of the switches and related systems. 

FAA’s Determination of the Effective 

Date 

An unsafe condition exists that 

requires the immediate adoption of this 

AD. The FAA has found that the risk to 

the flying public justifies waiving notice 

and comment prior to adoption of this 

rule because occurrences of incorrectly 

connected barometric switches have 

been reported. Also, the terminal used 

on the switches may be inadvertently 

dislodged while performing airplane 

maintenance in the pedestal area. A 

potential consequence of an incorrectly 

connected or dislodged barometric 

switch is no CABIN ALT HI 

annunciation in the cockpit and no 

automatic deployment of the cabin 

oxygen masks. This failure could lead to 

incapacitation of the crew due to 

hypoxia with possible inability to 

control the airplane. Therefore, we 

determined that notice and opportunity 

for public comment before issuing this 

AD are impracticable and that good 

cause exists for making this amendment 

effective in fewer than 30 days. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety, and 

we did not precede it by notice and an 

opportunity for public comment. We 

invite you to send any written relevant 

data, views, or arguments regarding this 

AD. Send your comments to an address 

listed under the ADDRESSES section. 

Include the docket number ‘‘FAA– 

2008–1067; Directorate Identifier 2008– 

CE–052–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the AD. We will consider all 

comments received by the closing date 

and may amend the AD in light of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 


erowe on PROD1PC64 with RULES
59492 Federal Register / Vol. 73, No. 197 / Thursday, October 9, 2008 / Rules and Regulations 

substantive verbal contact we receive 

concerning this AD. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

Section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this AD will not 

have federalism implications under 

Executive Order 13132. This AD will 

not have a substantial direct effect 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. 

For the reasons discussed above, I 

certify that this AD: 

(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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this AD and placed it in the AD docket. 

Examining the AD Docket 

You may examine the AD docket that 

contains the AD, the regulatory 

evaluation, any comments received, and 

other information on the Internet at 

http://www.regulations.gov; or in person 

at the Docket Management Facility 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The Docket Office (telephone (800) 647– 

5527) is located at the street address 

stated in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD): 

2008–21–04 Hawker Beechcraft 

Corporation: Amendment 39–15688; 

Docket No. FAA–2008–1067; Directorate 

Identifier 2008–CE–052–AD. 

Effective Date 

(a) This AD becomes effective on October 

20, 2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Model 390 airplanes, 

serial numbers RB–1 and RB–4 through RB– 

238, that are certificated in any category. 

Unsafe Condition 

(d) This AD is the result of reported 

occurrences of incorrectly connected 

barometric switches. Also, the terminal used 

on the switches may be inadvertently 

dislodged while performing airplane 

maintenance in the pedestal area. We are 

issuing this AD to modify the cabin 

barometric pressure switch and cabin 

altitude high switch to prevent them from 

becoming incorrectly connected or 

inadvertently disconnected, which may 

result in no CABIN ALT HI annunciation in 

the cockpit and no automatic deployment of 

the cabin oxygen masks. This failure could 

lead to incapacitation of the crew due to 

hypoxia with possible inability to control the 

airplane. 

Compliance 

(e) To address this problem, you must do 

the following, unless already done: 

Action Compliance Procedures 

(1) Modify the cabin barometric pressure switch 

and cabin altitude high switch installations. 

Within 25 hours time-in-service (TIS) after October 20, 2008 (the effective date of this 

AD) or within 30 days after October 20, 

2008 (the effective date of this AD), whichever occurs first. 

Follow Hawker Beechcraft Mandatory Service 

Bulletin SB 21–3899, original issue, dated 

May 2008. 

(2) Perform a functional test of the switches 

and related systems: 

(i) If, before the effective date of this AD, 

you did the flight test method in Part II of 

the Accomplishment Instructions of the 

service bulletin referenced in the Procedures column of this paragraph, then the 

action of paragraph (e)(2) of this AD is 

not required provided it was done after 

the modification required in paragraph 

(e)(1) of this AD. 

(ii) After the effective date of this AD, the 

flight test method described in paragraph 

(e)(2)(i) of this AD is prohibited. 

Before further flight after the modification of 

the cabin barometric pressure switch and 

cabin altitude high switch installations specified in paragraph (e)(1) of this AD. 

Following Part I—Ground Test Method paragraph 3, Accomplishment Instructions of 

Hawker Beechcraft Mandatory Service Bulletin SB 21–3899 original issue, dated May 

2008. 


erowe on PROD1PC64 with RULES
Federal Register / Vol. 73, No. 197 / Thursday, October 9, 2008 / Rules and Regulations 59493 

Alternative Methods of Compliance 

(AMOCs) 

(f) The Manager, Wichita Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. Send information to ATTN: Erik 

Brown, Aerospace Engineer, Wichita ACO, 

1801 Airport Road, Room 100, Wichita, 

Kansas 67209; telephone: (316) 946–4132; 

fax: (316) 946–4107. Before using any 

approved AMOC on any airplane to which 

the AMOC applies, notify your appropriate 

principal inspector (PI) in the FAA Flight 

Standards District Office (FSDO), or lacking 

a PI, your local FSDO. 

Material Incorporated by Reference 

(g) You must use Hawker Beechcraft 

Mandatory Service Bulletin SB 21–3899, 

original issue, dated May 2008, to do the 

actions required by this AD, unless the AD 

specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Hawker Beechcraft 

Corporation, P.O. Box 85, Wichita, Kansas 

67201–0085; telephone: (800) 429–5372 or 

(316) 676–3140; http:// 

pubs.hawkerbeechcraft.com. 

(3) You may review copies at the FAA, 

Central Region, Office of the Regional 

Counsel, 901 Locust, Kansas City, Missouri 

64106; or at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal_register/ 

code_of_federal_regulations/ 

ibr_locations.html. 

Issued in Kansas City, Missouri, on 

September 30, 2008. 

John Colomy, 

Acting Manager, Small Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–23643 Filed 10–8–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0357; Directorate 

Identifier 2008–NM–005–AD; Amendment 

39–15687; AD 2008–21–03] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 737–300, –400, and –500 Series 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for all 

Boeing Model 737–300, –400, and –500 

series airplanes. This AD requires 

repetitive inspections for discrepancies 

of the fuse pins of the inboard and 

outboard midspar fittings of the nacelle 

strut, and corrective actions if 

necessary. This AD results from a report 

of corrosion damage of the chrome 

runout on the head side found on all 

four midspar fuse pins of the nacelle 

strut. Additionally, a large portion of the 

chrome plate was missing from the 

corroded area of the shank. We are 

issuing this AD to detect and correct 

discrepancies of the fuse pins of the 

inboard and outboard midspar fittings of 

the nacelle strut, which could result in 

reduced structural integrity of the fuse 

pins and consequent loss of the strut 

and separation of the engine from the 

airplane. 

DATES: This AD is effective November 

13, 2008. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of November 13, 2008. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, P.O. Box 3707, 

Seattle, Washington 98124–2207. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (telephone 800–647–5527) 

is the Document Management Facility, 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Allen Rauschendorfer, Aerospace 

Engineer, Airframe Branch, ANM–120S, 

FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6432; fax (425) 917–6590. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

Part 39 to include an airworthiness 

directive (AD) that would apply to all 

Boeing Model 737–300, –400, and –500 

series airplanes. That NPRM was 

published in the Federal Register on 

March 26, 2008 (73 FR 15959). That 

NPRM proposed to require repetitive 

inspections for discrepancies of the fuse 

pins of the inboard and outboard 

midspar fittings of the nacelle strut, and 

corrective actions if necessary. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comments received. 

Support for the NPRM 

Boeing supports the NPRM. 

Deutsche Lufthansa (DLH) states that 

during inspections done per the AMM, 

for which the left- and right-hand 

pylons have to be removed, it observed 

several instances of corrosion or 

damaged chrome plating of the midspar 

fuse pins; the defective pins were 

replaced. Therefore, DLH supports the 

repetitive inspections of the fuse pins. 

Request for Credit for Initial Inspection 

DLH asks that the initial inspection 

procedure done per Maintenance 

Planning Document (MPD) Item 54– 

322–01, of the applicable airplane 

maintenance manual (AMM), be 

acceptable for compliance with the 

initial inspection required by the 

NPRM. In addition, DLH does not 

support the compliance times for the 

initial inspection. DLH feels that the 

inspection of the fuse pins done during 

its maintenance check per the AMM 

provides the same level of safety as the 

initial inspection done per the service 

bulletin referenced in the NPRM. 

We do not agree. The AMM only 

includes procedures for access and does 

not provide inspection procedures; 

therefore, the service bulletin provides 

the inspection procedures. If DLH 

believes that its inspection procedures 

provide an acceptable alternative, under 

the provisions of paragraph (g) of this 

AD, we will consider requests for 

approval of an alternative method of 

compliance if sufficient data are 

submitted to substantiate that the 

alternative inspection would provide an 

acceptable level of safety. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Costs of Compliance 

We estimate that this AD will affect 

616 airplanes of U.S. registry. We also 

estimate that it will take 4 work-hours 

per product to comply with the 

inspection in this AD. The average labor 

rate is $80 per work-hour. Based on 

these figures, we estimate the cost of 


erowe on PROD1PC64 with RULES