AD 74-12-03

final rule
Data completeness: 70%

Airworthiness Directives; MCDONNELL DOUGLAS DC-8-61F, -62F, -63F

AD Number
74-12-03
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company DC-8-61F Airworthiness Directives; MCDONNELL DOUGLAS DC-8-61F, -62F, -63F
aircraft The Boeing Company DC-8-62F Airworthiness Directives; MCDONNELL DOUGLAS DC-8-61F, -62F, -63F
aircraft The Boeing Company DC-8-63F Airworthiness Directives; MCDONNELL DOUGLAS DC-8-61F, -62F, -63F

Unsafe Condition

Leakage in the passenger oxygen system due to worn piping and broken or missing supports could result in loss of oxygen supply during emergency conditions.

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

Required Actions

Perform a passenger oxygen system leak check per DACO Alert Service Bulletin A35-25 Revision A, paragraph 1(a). Inspect, repair, and replace worn piping, and replace broken and missing supports. Repeat leak tests at intervals not exceeding 50 flight hours until modifications per DACO A.S.B. A35-25 Revision A, paragraph 1(b) are completed. Secure oxygen piping within 300 hours time in service after initial leak check.

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

Compliance Time

within twenty-four (24) hours of receipt of this telegram, or prior to further flight, whichever occurs later

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Affected Aircraft

MCDONNELL DOUGLAS DC-8-61F, -62F, -63F convertible freighter 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

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