AD 78-08-01

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AD Number:
78-08-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; HAWKER SIDDELEY AVIATION LIMITED Model BH/HS 125-600A Airplanes
Subject:
Engine Blow-Off Valve Switches
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/10/1978
Make:
Textron Aviation Inc.
Model:
BH.125 Series 600A | HS.125 Series 600A
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Superseded AD: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Superseded By: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: 78-08-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3180

AD NUMBER:   78-08-01

SUBJECT HEADING:   Airworthiness Directives; HAWKER SIDDELEY AVIATION LIMITED Model BH/HS 125-600A Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective May 10, 1978.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
78-08-01 HAWKER SIDDELEY AVIATION LIMITED: Amendment 39-3180. Applies to BH/HS 125-600A airplanes, certificated in all categories.

Compliance required within one month after the effective date of this AD, unless already accomplished.

To prevent possible inability to activate the engine blow-off valve switches in the event that birds are ingested into the engines on take-off, accomplish the following:

Remove the existing switch guards for the engine blow-off valve switches and replace with the new design guard, P/N 25-6 NF 2629, in accordance with the section entitled "Accomplishment Instructions" and the associated drawing, contained in Hawker Siddeley Aviation, Ltd. Service Bulletin 75-3(2580), dated June 21, 1977, or an FAA-approved equivalent.

This amendment becomes effective May 10, 1978.

FOOTER: