[Federal Register Volume 68, Number 148 (Friday, August 1, 2003)]
[Proposed Rules]
[Page 45177]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 03-19584]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2002-CE-05-AD]
RIN 2120-AA64


Airworthiness Directives; Cessna Aircraft Company Models 401, 
401A, 401B, 402, 402A, 402B, 411, and 411A Airplanes

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM); extension of the comment 
period.

-----------------------------------------------------------------------

SUMMARY: This document provides additional time for the public to 
comment on a proposal to supersede Airworthiness Directive (AD) 79-10-
15 R2, which applies to all Cessna Aircraft Company (Cessna) Models 
401, 401A, 401B, 402, 402A, 402B, 411, and 411A airplanes. AD 79-10-15 
R2 currently requires repetitive inspections of the right and left wing 
spar lower cap areas for fatigue cracks and requires wing spar cap 
repair or replacement as necessary. Cessna has performed fatigue and 
crack growth analyses of the wings of these airplanes, and the Federal 
Aviation Administration (FAA) has evaluated this information and 
determined that a wing spar modification is necessary as well as 
periodic inspections. This proposed AD would require you to 
repetitively inspect the wing spar caps for fatigue cracks with any 
necessary repair or replacement on all airplanes and incorporate a spar 
strap modification on each wing spar on certain airplanes. Comments 
received on the original NPRM (68 FR 26239, May 15, 2003) specify 
additional time to respond to the proposed action. The actions 
specified by this proposed AD are intended to prevent wing spar cap 
failure due to undetected fatigue cracks. Such failure could result in 
loss of a wing with consequent loss of airplane control.

DATES: The Federal Aviation Administration (FAA) must receive any 
comments on this proposed rule on or before September 8, 2003. This is 
extended from August 8, 2003.

ADDRESSES: Submit comments to FAA, Central Region, Office of the 
Regional Counsel, Attention: Rules Docket No. 2002-CE-05-AD, 901 
Locust, Room 506, Kansas City, Missouri 64106. You may view any 
comments at this location between 8 a.m. and 4 p.m., Monday through 
Friday, except Federal holidays. You may also send comments 
electronically to the following address: [email protected]. 
Comments sent electronically must contain ``Docket No. 2002-CE-05-AD'' 
in the subject line. If you send comments electronically as attached 
electronic files, the files must be formatted in Microsoft Word 97 for 
Windows or ASCII text.
    You may get service information that applies to this proposed AD 
from the Cessna Aircraft Company, Product Support, P.O. Box 7706, 
Wichita, Kansas 67277; telephone: (316) 517-5800; facsimile: (316) 942-
9006. You may also view this information at the Rules Docket at the 
address above.

FOR FURTHER INFORMATION CONTACT: Paul Nguyen, Aerospace Engineer, FAA, 
Wichita Aircraft Certification Office, 1801 Airport Road, Mid-Continent 
Airport, Wichita, Kansas 67209; telephone: (316) 946-4125; facsimile: 
(316) 946-4107.

    Issued in Kansas City, Missouri, on July 28, 2003.
James E. Jackson,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 03-19584 Filed 7-31-03; 8:45 am]
BILLING CODE 4910-13-P