AD 77-19-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA- 31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA- 31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA- 31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA- 31-325, and PA-31-350 Airplanes |
Unsafe Condition
Damage to aileron balance and interconnect cables due to electrical arcing between the flap solenoid and the cables, which could cause hazards in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect aileron balance and interconnect cables and flap solenoid for damage from electrical arcing within 50 hours in service. Repair damaged components before further flight except under FAR 21.197. Within 100 hours in service, inspect, repair cables, and alter flap solenoid installation per Piper SB No. 567 or equivalent. If flap motor circuit breaker activates post-AD, inspect and repair within 10 hours in service. Compliance time may be adjusted with FAA approval.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours in service from the effective date of this AD (for initial inspection), within 100 hours in service (for full compliance including installation changes), and within 10 hours in service if circuit breaker activates post-AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models PA-31, PA-31-300, PA-31-325 (Serial Numbers 31-2 to 31-7712051), and PA-31-350 (Serial Numbers 31-5001 to 31-7752092).
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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