AD 91-03-06

AD Final Rules - DRS_91-03-06.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
91-03-06
Document Type:
AD Final Rules
Docket Number:
90-NM-272-AD
Subject Heading:
Airworthiness Directives; BRITISH AEROSPACE Model BAe 125-800A, HS 125-700A, DH/HS/BH 125 Series Airplanes
Subject:
Generator Control Unit
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/11/1991
Make:
Textron Aviation Inc.
Model:
BAe.125 Series 800A | BAe.125 Series 800A (C-29A) | BAe.125 Series 800A (U-125) | BH.125 Series 400A...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Superseded AD: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Superseded By: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: 91-03-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   90-NM-272-AD

AMENDMENT:   39-6868

AD NUMBER:   91-03-06

SUBJECT HEADING:   Airworthiness Directives; BRITISH AEROSPACE Model BAe 125-800A, HS 125-700A, DH/HS/BH 125 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective February 11, 1991.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
91-03-06 BRITISH AEROSPACE: Amendment 39-6868. Docket No. 90-NM-272-AD.

Applicability: All Model BAe 125-800A and HS 125-700A series airplanes, pre-Modification 253159; and all pre-Modification 253159 Model DH/HS/BH 125 series airplanes that have been retrofitted with Garrett TFE 731 engines; certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent the overheating of the battery and loss of the pilot's and co-pilot's primary and standby heading and attitude information displays, accomplish the following:

A. Within 30 days after the effective date of this AD, perform a visual inspection of the Generator Control Unit (GCU) earth wire, in accordance with British Aerospace Service Bulletin 24-A278, dated July 26, 1990.

1. If no evidence of damage is found, prior to further flight, perform a continuity check of the earth wire between the starter/generator terminal stud "E" and connector pin "F" on the GCU, in accordance with paragraph 2.A.(6) of the Accomplishment Instructions of the service bulletin. If continuity exists, no further action is required.

2. If evidence of damage or lack of continuity is found or suspected, prior to further flight, replace the earth wire in accordance with the service bulletin.

B. An alternate means 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 submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113.

C. 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. This information may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

This amendment (39-6868, AD 91-03-06) becomes effective on February 11, 1991.

FOOTER: