AD 78-20-03

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AD Number:
78-20-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Hughes Model 369D and 369H Helicopters
Subject:
Fire Suppression System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/07/1979
Make:
MD Helicopters, Inc.
Model:
369D | 369H
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 78-20-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3307

AD NUMBER:   78-20-03

SUBJECT HEADING:   Airworthiness Directives; Hughes Model 369D and 369H Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective November 7, 1979.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
78-20-03 HUGHES: Amendment 39-3307 as amended by Amendment 39-3599. Applies to Hughes Model 369D and 369H helicopters which have either the C-500 aerial spray system, STC No. SH184NW or the Chadwick C-500 fire suppression kit, STC No. SH567NW installed.

To prevent hydraulic fluid from entering the engine after a seal failure of the Chadwick hydraulic motor, accomplish the following:

Within the next 100 hours time in service or 30 days, whichever comes first, after the effective date of this AD, install a drain line on the engine mounting flange, Chadwick P/N 500- 60405-1, in accordance with Chadwick Service Bulletin 500-78-02 dated September 1, 1978, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.

To prevent possible fatigue cracking of the helicopter undercarriage, accomplish the following: Within the next 50 hours flying time or six months, whichever comes first, after the effective date of this amended AD, install a doubler, P/N 500-60487-1, and grommet, P/N AN931-7-11, in accordance with Chadwick Service Bulletin 500-79-01 dated September 27, 1979, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1).

All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Chadwick Inc., 11969 SW Herman Road, Sherwood, Oregon 97140. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.

Amendment 39-3307 became effective November 2, 1978.

This Amendment 39-3599 becomes effective November 7, 1979.

FOOTER: