AD 77-12-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31 and PA-31-300 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper Models PA-31 and PA-31-300 Airplanes |
Unsafe Condition
Elevator balance weights may have insecure attachment (rivnut pullup) or cause elevator unbalance exceeding 108 in-lbs tail heavy maximum.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect elevator balance weights for secure attachment or remove weights and check elevator unbalance, repair or rebalance elevator as necessary per Nayak Service Bulletin No. 1 or equivalent approved method.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours in service or at the next annual inspection, whichever occurs first, after the effective date unless already accomplished.
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Affected Aircraft
Piper Models PA-31 and PA-31-300 airplanes with wing luggage lockers installed per STC SA986SW.
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
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