AD Amdt-39-9933

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Aerospatiale Model ATR42-300 and ATR42- 320 Series Airplanes

AD Number
Amdt-39-9933
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-NM-24-AD
FR Citation
62 FR 7665

Applicability

TypeManufacturerModelDetails
aircraft Aerospatiale Model ATR42-300 and ATR42- 320 Series Airworthiness Directives; Aerospatiale Model ATR42-300 and ATR42- 320 Series Airplanes

Unsafe Condition

Fatigue cracking in the lower lugs of the barrel of the main landing gear (MLG) could lead to MLG collapse.

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

Required Actions

Perform repetitive ultrasonic inspections to detect fatigue cracks in the lower lugs of the MLG barrel. Replace cracked lower lugs with new or serviceable ones and conduct a follow-on inspection.

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

Affected Aircraft

Aerospatiale Model ATR42-300 and ATR42-320 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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