AD Amdt-39-11169

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Mitsubishi Model YS-11 Series Airplanes

AD Number
Amdt-39-11169
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-NM-92-AD
FR Citation
64 FR 26831

Applicability

TypeManufacturerModelDetails
aircraft Mitsubishi YS-11 Airworthiness Directives; Mitsubishi Model YS-11 Series Airplanes

Unsafe Condition

Fatigue cracking in the manhole doublers of the lower wing panels could result in failure of the wing structure.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Conduct repetitive inspections to detect fatigue cracking in the manhole doublers of the lower wing panels. Repair any detected cracking as necessary. Eventually modify the screw holes in the manhole doublers, which terminates the repetitive inspections.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Not specified in the provided text.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

All Mitsubishi Model YS-11 series airplanes.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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