AD 91-11-13

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AD Number:
91-11-13
Document Type:
AD Final Rules
Docket Number:
91-NM-106-AD
Subject Heading:
Airworthiness Directives; LOCKHEED Model 1329-23A, 1329-23D, 1329-23E (JetStar) and 1329-25 (JetStar...Show more
Subject:
Empennage Pivot Fittings
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/24/1991
Make:
Lockheed Martin Corporation
Model:
1329-23A | 1329-23D | 1329-23E | 1329-25
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 91-11-13
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   91-NM-106-AD

AMENDMENT:   39-7011

AD NUMBER:   91-11-13

SUBJECT HEADING:   Airworthiness Directives; LOCKHEED Model 1329-23A, 1329-23D, 1329-23E (JetStar) and 1329-25 (JetStar II) Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective June 24, 1991.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
91-11-13 LOCKHEED AERONAUTICAL SYSTEMS COMPANY-GEORGIA: Amendment 39-7011. Docket No. 91-NM-106-AD.
Applicability: Model 1329-23A, -23D, and -23E (JetStar) series airplanes, Serial Numbers 5001 through 5162; and 1329-25 (JetStar II) series airplanes, Serial Numbers 5201 through 5240; certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent failure of the empennage pivot fitting assembly, loss of the empennage, and subsequent reduction of controllability of the airplane, accomplish the following:

(a) Within the next 10 hours time-in-service, or within 20 days after the effective date of this AD, whichever occurs first, perform an eddy current inspection of the JE24 series empennage pivot fitting assemblies to detect cracks, in accordance with Revision 1 of Lockheed Alert Service Bulletins A329II-55-3 (for Model 1329-25) and A329-299 (for Models 1329-23A, - 23D, and -23E), both dated April 12, 1991, as applicable. Repeat this inspection thereafter at intervals not to exceed 300 hours time-in-service.

(b) If cracks are found as a result of the eddy current inspections required by paragraph (a) of this AD, prior to further flight, replace the JE24 series empennage pivot fitting, or repair the fitting in a manner approved by the Manager, Atlanta Aircraft Certification Office. After replacement or repair, continue to perform the repetitive eddy current inspections required by paragraph (a) of this AD.

(c) Within 7 days after the initial inspection required by paragraph (a) of this AD, submit a report of the inspection results, positive or negative, to the Manager, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia 30349, telefax (404) 991-3606.

NOTE: Negative results of the repetitive inspections need not be reported.

(d) Within the next 10 hours time-in-service, or within 20 days after the effective date of this AD, whichever occurs first, perform a visual inspection of all fasteners attaching the pivot fitting assembly to the vertical stabilizer rear beam caps to detect loose, missing, or broken fasteners, or improper countersinks, in accordance with Revision 1 of Lockheed Alert Service Bulletins A329II-55-3 (for Models 1329-25) and A329-299 (for Model 1329-23A, -23D, and - 23E), both dated April 12, 1991, as applicable. Repeat this inspection thereafter at intervals not to exceed 300 hours time-in-service.

(e) If loose, missing, or broken fasteners, or improper countersinks, where applicable, are found as a result of the visual inspection required by paragraph (d) of this AD, prior to further flight, repair or replace defective or missing fasteners in accordance with Revision 1 of Lockheed Alert Service Bulletins A329II-55-3 (for Models 1329-25) and A329-299 (for Model 1329-23A, -23D, and -23E), both dated April 12, 1991, as applicable.

(f) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Atlanta Aircraft Certification Office, ACE-115A, FAA, Small Airplane Directorate.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Atlanta Aircraft Certification Office, ACE-115A.

(g) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

The inspection and repairs shall be done in accordance with Revision 1 of Lockheed Alert Service Bulletins A329II-55-3 (for Model 1329-25) and A329-299 (for Models 1329-23A, -23D, and -23E), both dated April 12, 1991, 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 Lockheed Aeronautical Systems Company-Georgia, Attn: Commercial and Customer Support, Dept. 73-05, Zone 0199, 86 South Cobb Drive, Marietta, Georgia 30063. Copies may be inspected at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or at the FAA, Small Airplane Directorate, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C.

This amendment (39-7011, AD 91-11-13) becomes effective on June 24, 1991.

FOOTER: