| AD Number | 53-04-01 | Status | Active |
| Effective Date | Not specified | Issue Date | December 04, 1956 |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | --- - _EMPTY_ |
| Citation | This information is not available. | ||
| Manufacturer(s) | Piper Aircraft Inc. |
| Model(s) | PA-18 PA-18-105 (Special) PA-18-125 (Army L-21A) PA-18-135 PA-18-150 PA-18A PA-18A-135 PA-18A-135 (Restricted) PA-18A-150 PA-18A-150 (Restricted) PA-18A (Restricted) PA-18AS-125 PA-18AS-135 PA-18AS-150 PA-18S PA-18S-105 (Special) PA-18S-125 PA-18S-135 PA-18S-150 |
53-04-01 PIPER: Applies to All Model PA-18 Aircraft Which Have Not Had the Control Stick Retention Device Modified to Incorporate a Through Bolt.
Compliance required by April 1, 1953.
In order to prevent the control stick inadvertently pulling out of the socket, continue the existing hole for the retention pin on the quick detachable control stick spring device through the control stick and socket and install an AN 3-14 or AN 3-14A through bolt.
(Piper Service Letter No. 162 dated March 6, 1951, covers this same subject.)