AD Amdt-39-10262

Recurring final rule
Data completeness: 70%

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

AD Number
Amdt-39-10262
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-NM-283-AD
FR Citation
62 FR 66980

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 of the lower lugs of the barrel of the main landing gear (MLG), which could lead to the collapse of the MLG.

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

Required Actions

Conduct repetitive ultrasonic inspections of the lower lugs of the MLG barrel at intervals of 900 landings. Replace cracked lower lugs with new or serviceable parts and perform a follow-on inspection. Optional modification per Messier-Dowty Service Bulletin 631-32-133 terminates repetitive inspections.

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

Compliance Time

Before further flight

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

Affected Aircraft

All Aerospatiale Model ATR42-300 and ATR42-320 series airplanes, certificated in any category.

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

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.