AD 73-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lavia Argentina S.A. (Laviasa) | PA-25 | Airworthiness Directives; Piper Model PA-25, PA-25-235, and PA-25-260 Airplanes |
| aircraft | Lavia Argentina S.A. (Laviasa) | PA-25-235 | Airworthiness Directives; Piper Model PA-25, PA-25-235, and PA-25-260 Airplanes |
| aircraft | Lavia Argentina S.A. (Laviasa) | PA-25-260 | Airworthiness Directives; Piper Model PA-25, PA-25-235, and PA-25-260 Airplanes |
Unsafe Condition
Cracks in the forward wing spar web and doubler in the area of wing spar attach fitting bolt holes and in the forward spar lower cap rear flange around the inboard four skin attachment holes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove left and right wings from fuselage, remove wing attach fittings, inspect specified areas using dye or fluorescent penetrant inspection, replace cracked parts with serviceable parts or repair per Piper Service Bulletin No. 414. Install Piper Kit No. 760840 to eliminate repetitive inspections.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
For PA-25-235/260 with ≥2000 hours time in service on effective date: within 5 hours after AD effective date or within last 295 hours, then every 300 hours. For PA-25-235/260 with <2000 hours: by 2000 hours or next 5 hours after effective date, then every 300 hours. PA-25 (150 hp) must comply by 2000 hours or next 5 hours after effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Model PA-25 (Serial Numbers 25-1 through 25-1999), PA-25-235 (Serial Number 25-02), and PA-25-260 (Serial Numbers 25-2000 through 25-74005573)
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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