AD 91-07-12

AD Final Rules - DRS_91-07-12.html
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AD Number:
91-07-12
Document Type:
AD Final Rules
Docket Number:
90-NM-273-AD
Subject Heading:
Airworthiness Directives; BRITISH AEROSPACE Model DH/BH/HS 125 Series Airplanes
Subject:
Main Landing Gear Hinge Fittings
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/29/1991
Make:
Model:
BH.125 Series 400A | BH.125 Series 600A | DH.125 Series 1A | DH.125 Series 1A/R-522 | DH.125 Series ...Show more
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Superseded AD: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Superseded By: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: 91-07-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   90-NM-273-AD

AMENDMENT:   39-6950

AD NUMBER:   91-07-12

SUBJECT HEADING:   Airworthiness Directives; BRITISH AEROSPACE Model DH/BH/HS 125 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective April 29, 1991.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
91-07-12 BRITISH AEROSPACE: Amendment 39-6950. Docket No. 90-NM-273-AD.

Applicability: All Model DH/BH/HS 125 series airplanes, post-modification 255640, certificated in any category.

Compliance is required as indicated, unless previously accomplished.

To ensure proper operation of the main landing gear (MLG) door, accomplish the following:

A. Prior to the accumulation of 6,000 landings on the right and left MLG door aluminum forward hinge fittings, or within the next 400 landings after December 4, 1990 (the effective date of Amendment 39-6786, AD 90-23-01), whichever occurs later, and thereafter at intervals not to exceed 6,000 landings, replace the aluminum forward hinge fittings in accordance with British Aerospace Service Bulletin 32-218, dated July 28, 1988.

B. Replacement of an aluminum hinge fitting with a new stainless steel hinge fitting, in accordance with British Aerospace Service Bulletin 32-220-3176A, B, and C, dated September 2, 1988, terminates the requirements for the replacement of the hinge fittings required by paragraph A. of this AD.

C. 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, Standardization Branch, ANM-113, FAA, Transport 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, Standardization Branch, ANM-113.

D. 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.

All persons affected by this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041-0414. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

Airworthiness Directive 91-07-12 supersedes AD 90-23-01, Amendment 39-6786.

This amendment (39-6950, AD 91-07-12) becomes effective on April 29, 1991.

FOOTER: