| AD Number | 77-06-05 | Status | Active |
| Effective Date | March 31, 1977 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-2856 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Cessna Aircraft Company |
| Model(s) | 340A |
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 When this paragraph has been accomplished, Paragraph A is no longer applicable.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.