AD 78-20-04

final rule
Data completeness: 70%

Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes

AD Number
78-20-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company DC-10-10 Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes
aircraft The Boeing Company DC-10-10F Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes
aircraft The Boeing Company DC-10-30 Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes
aircraft The Boeing Company DC-10-30F (KC-10A, KDC-10) Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes
aircraft The Boeing Company DC-10-40 Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F and -40 Airplanes

Unsafe Condition

Failure of an outboard slat drive arm or drum shaft.

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

Required Actions

Inspect the outboard slat drive arms ultrasonically for cracks within 1500 hours' time in service after the effective date. Inspect by magnetic particle methods for cracks and modify or replace the outboard slat drive arms and drum shafts within 4,000 hours' time in service after the effective date. Replace any cracked components prior to further flight. Alternate methods include installing a lubrication fitting and fillet seal with periodic grease application.

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

Compliance Time

Within the next 1500 hours' time in service after the effective date of this AD (for part (a)) and within the next 4,000 hours' time in service after the effective date (for part (b)).

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

Affected Aircraft

MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F (KC-10A, KDC-10), and -40 airplanes certificated in all categories.

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

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

View Official Source ↗ Find More ADs for The Boeing Company DC-10-10

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