AD 77-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Aircraft |
Unsafe Condition
Missing horizontal stabilizer and fin skin to stiffener rivet attachments could cause possible hazards in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and repair the horizontal stabilizer and fin skin to stiffener rivet attachments in accordance with Piper Service Bulletin No. 575 or equivalent approved procedures. Submit substantiating data through an FAA Maintenance Inspector to possibly increase compliance time.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next fifty hours in service from the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models PA-31, PA-31-325, and PA-350 with specified serial numbers: PA-31 and PA-31-325 serial numbers 31-465, 31-7712057 thru 31-7712078, 31-7712081, 31-7712083; PA-31-350 serial numbers 31-7752099, 31-7752101, 31-7752103, 31-7752105 thru 31-7752114, 31-7752117 thru 31-7752131, 31-7752134 thru 31-7752138.
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.