AD 61-21-03

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AD Number:
61-21-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft
Subject:
Hydraulic Fluid Gage
Status:
Current
Citation:
(Federal Register: October 13, 1961)
Citation Publish Date:
10/13/1961
Effective Date:
10/13/1961
Make:
The Boeing Company
Model:
DC-8-11 | DC-8-12 | DC-8-21 | DC-8-31 | DC-8-32 | DC-8-33 | DC-8-41 | DC-8-42 | DC-8-43 | DC-8-51 | ...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Superseded AD: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Superseded By: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: 61-21-03
CITATION:   [Federal Register: October 13, 1961]

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   61-21-03

SUBJECT HEADING:   Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective October 13, 1961.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
61-21-03 DOUGLAS: Amdt. 346 Part 507 Federal Register October 13, 1961. Applies to All DC-8 Series Aircraft.

Compliance required within the next 150 hours' time in service after the effective date of this AD.

As a result of recent incidents which have shown the need for effective quantity indication of "reserve" hydraulic fluid in the system reservoir, the following must be accomplished:

Unless already accomplished in accordance with FAA approved technical data, replace or modify in accordance with Douglas Service Bulletin No. DC-8 A29-40 (Reissue No. 1 or later) or FAA approved equivalent, the existing hydraulic quantity gage in the cockpit and the quantity transmitter in the fluid reservoir, to provide a system which will indicate the quantity of reserve hydraulic fluid in the reservoir down to approximately one gallon. The system indication error shall not exceed 10 percent. The dial on the quantity gage shall be marked in a manner which divides the total indicator range into three segments and identifies the three segments, as follows:

Segment	Reserve Fluid Quantity in Reservoir
NORMAL	Full (11.5 gal.) to 4.9 gal.
AUX.	4.9 gal. to 1.5 gal.
EMER.	1.5 gal. to approx. 1.0 gal.

The exact quantities in gallons need not be marked on the quality indicator. "EMER." need not be shown provided that this segment is otherwise marked in a manner distinctly different from the other segments.

(Douglas Service Bulletin No. DC-8 A29-40 (Reissue No. 1 or later) pertains to this same subject.)

This directive effective October 13, 1961.


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