AD 77-06-05

AD Final Rules - DRS_77-06-05.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
77-06-05
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; CESSNA Model 340A Airplanes
Subject:
Fire Hazard in Oxygen System
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/31/1977
Make:
Cessna Aircraft Company
Model:
340A
Product Type:
Aircraft
Product Subtype:
Small 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Superseded AD: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Superseded By: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: 77-06-05
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2856

AD NUMBER:   77-06-05

SUBJECT HEADING:   Airworthiness Directives; CESSNA Model 340A Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective March 31, 1977.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
77-06-05 CESSNA: Amendment 39-2856. Applies to Model 340A (Serial Numbers 340A0040 thru 340A0225, 340A0229 and 340A0230) airplanes.

To preclude a fire hazard that could result from oxygen coming in contact with an improper lubricant which may have been used in the assembly of the oxygen system, accomplish the following:

A) Prior to further flight:

1. Deactivate the oxygen system by disconnecting the control cable at the oxygen regulator and safety the regulator control in the off position.

2. Install a temporary placard on the instrument panel in full view of the pilot which reads as follows:
"OXYGEN INOPERATIVE"
"DO NOT OPERATE ABOVE 23,500 FEET"

and operate the airplane in accordance with the placard limitation.

3. Install a tag on the oxygen filler line assembly with wording that prohibits servicing of the oxygen system.

B) Within the next 25 hours' time in service after the effective date of this AD, repair and clean the oxygen system in accordance with Cessna Service Letter ME77-3, dated February 16, 1977, or later approved revisions. When this paragraph has been accomplished, Paragraph A is no longer applicable.

C) Airplanes may be flown in accordance with FAR 21.197 to a location where Paragraph A may be accomplished.

D) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

This Amendment becomes effective March 31, 1977, to all persons except those to whom it was made effective earlier by air mail letters dated March 3, 1977, which were sent to the owners of Cessna Model 340A airplanes.

FOOTER: