AD 64-05-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-22 | Airworthiness Directives; Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-108 | Airworthiness Directives; Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-135 | Airworthiness Directives; Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-150 | Airworthiness Directives; Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22-160 | Airworthiness Directives; Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160 Aircraft |
Unsafe Condition
Failure of the upper main oleo bearing due to incorrect installation with the loading groove on the under side, insufficient balls, binding, sticking, wear, or misalignment causing bearing dislodgement or strut malfunction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect upper main oleo bearing (P/N 452333) to ensure proper installation with loading groove on top, check for 59 balls, no binding/sticking, and no wear allowing ball dislodgement. Remove/replace bearings with defects before flight. Clean and inspect bearing mounting area for burrs, wear, or misalignment issues. Repack bearings with MIL-G-3278 lubricant. Install bearings with loading groove on upper side. Alternatively, install new sealed bearing (P/N 452419) and boot (P/N 14087-00) to exempt from prior requirements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours' time in service after March 30, 1964, unless already accomplished within the preceding 475 hours' time in service, and every 500 hours' time in service thereafter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models PA-22, PA-22-108, PA-22-135, PA-22-150, and PA-22-160, Serial Numbers 22-1 through 22-9848.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.