AD 90-15-13

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AD Number:
90-15-13
Document Type:
AD Final Rules
Docket Number:
90-NM-29-AD
Subject Heading:
Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes
Subject:
Propeller Relay
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/20/1990
Make:
Mitsubishi Heavy Industries, Ltd.
Model:
YS-11 | YS-11A-200 | YS-11A-300 | YS-11A-500 | YS-11A-600
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Superseded AD: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Superseded By: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: 90-15-13
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   90-NM-29-AD

AMENDMENT:   39-6657

AD NUMBER:   90-15-13

SUBJECT HEADING:   Airworthiness Directives; MITSUBISHI Model YS-11 and YS-11A Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective August 20, 1990.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
90-15-13 MITSUBISHI HEAVY INDUSTRIES, LTD (formerly Nihon Aeroplane Manufacturing Company, NAMC): Amendment 39-6657. Docket No. 90-NM-29-AD.
Applicability: Model YS-11 and YS-11A series airplanes, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent incidents of propellers failing to withdraw, accomplish the following:

A. Within 1,000 flight hours after the effective date of this AD:

1. Inspect the propeller high stop withdrawal relay in accordance with the accomplishment instructions of Mitsubishi NAMC YS-11 Service Bulletin 61-5, dated December 20, 1988. If any abnormality is detected, replace the relay prior to further flight.

2. Install Decal 01-81717-27 in accordance with Mitsubishi NAMC YS-11 Service Bulletin 15-27, dated December 20. 1988.

B. Repeat the inspection of the propeller high stop withdrawal relay at intervals not to exceed 3,000 flight hours after the initial inspection or after replacement, in accordance with Mitsubishi NAMC YS-11 Service Bulletin 61-5, dated December 20, 1988. If any abnormality is detected, replace the relay prior to further flight.

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.

D. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate.

NOTE: The request should be submitted directly to the Manager, Los Angeles ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Los Angeles ACO.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Nagoya Aircraft Works Mitsubishi Heavy Industries, Ltd., 10 Oye-cho, Minato-Ku, Nagoya 455, Japan; Attention: K. Saitoh, Manager, YS- 11 Group, Service Department. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or at the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California.

This amendment (39-6657, AD 90-15-13) becomes effective on August 20, 1990.

FOOTER: