AD 98-16-17 R1

AD Final Rules - 981617R1.pdf
Copy URL
Document Versions
 Feedback
DetailsAttachments/Public Comments
AD Number:
98-16-17 R1
Document Type:
AD Final Rules
Docket Number:
99-NM-229-AD
Subject Heading:
Airworthiness Directives; Cessna Model 750 Citation X Series Airplanes
Subject:
Secondary horizontal stabilizer
Status:
Current
Citation:
(Federal Register: October 23, 2003 (Volume 68, Number 205))
Citation Publish Date:
10/23/2003
Effective Date:
10/23/2003
Make:
Textron Aviation Inc.
Model:
750
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
98-16-17
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
Automatic Zoom
Actual Size
Page Fit
Page Width
⁨50⁩%
⁨75⁩%
⁨100⁩%
⁨125⁩%
⁨150⁩%
⁨200⁩%
⁨300⁩%
⁨400⁩%
125%
of ⁨3⁩
1


[Federal Register: October 23, 2003 (Volume 68, Number 205)]


[Rules and Regulations]


[Page 60624-60625]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]


[DOCID:fr23oc03-6]


–––––––––––––––––––––––––––––––––––


DEPARTMENT OF TRANSPORTATION


Federal Aviation Administration


14 CFR Part 39


[Docket No. 99-NM-229-AD; Amendment 39-13347; AD 98-16-17 R1]


RIN 2120-AA64


Airworthiness Directives; Cessna Model 750 Citation X Series Airplanes


AGENCY:
 
Federal Aviation Administration, DOT.


ACTION:
 
Final rule; rescission.


–––––––––––––––––––––––––––––––––––


SUMMARY:
 
This amendment rescinds Airworthiness Directive (AD) 98-16-17 R1, which is


applicable to all Cessna Model 750 Citation X series airplanes. That AD requires repetitive in-flight


functional tests to verify proper operation of the secondary horizontal stabilizer pitch trim system,


and repair if necessary. The requirements of that AD were intended to detect and correct


contamination and damage in the system actuator, which could result in simultaneous failure of both


primary and secondary pitch trim systems, and consequent reduced controllability of the airplane.


Since the issuance of that AD, an improved part has been developed, which, if installed, would


terminate the repetitive tests; that improved part has been installed on all affected airplanes or is


being installed in production. Therefore, the identified unsafe condition no longer exists.


EFFECTIVE DATE:
 
October 23, 2003.


FOR FURTHER INFORMATION CONTACT:
 
Joel M. Ligon, 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) 946-4138; 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


Cessna Model 750 Citation X series airplanes was published in the Federal Register on January 7,


2000 (65 FR 1075). That action proposed to rescind AD 98-16-17, amendment 39-10693 (63 FR


42206, August 13, 1999), which currently requires repetitive in-flight functional tests of the


secondary horizontal stabilizer pitch trim system, and repair if necessary.
2


Comments


We provided the public the opportunity to participate in the development of this AD. We


received no comments on the proposed rescission.


Conclusion


We have carefully reviewed the available data and determined that air safety and the public


interest require rescinding the AD as proposed.


FAA's Determination


Since AD 98-16-17 was issued, an improved part has been developed. Installation of that part


terminates the repetitive tests required by the existing AD. The FAA has been advised that the


improved part has been installed on all affected airplanes or will be installed in production. The FAA


has determined that the previous part number is no longer available or allowed to be installed.


Therefore, the identified unsafe condition no longer exists, and we have determined that it is


necessary to rescind AD 98-16-17 to prevent operators from performing unnecessary actions.


The Rescission


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 an AD which removes amendment 39-10693, to read as


follows: