AD 47-10-25

final rule
Data completeness: 60%

LOCKHEED Model 49

AD Number
47-10-25
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Lockheed Aircraft Corporation 49-46 LOCKHEED Model 49

Unsafe Condition

Generator mounting bolts may fail due to insufficient strength, leading to generator detachment.

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

Required Actions

Replace the 12 mounting head-to-yoke bolts in each generator with new 1/4-inch bolts (P/N 63937) as specified in Eclipse-Pioneer Bulletin No. 70.

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

Compliance Time

prior to March 1, 1947

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

Affected Aircraft

Lockheed Aircraft Corporation Model 49 serials with Eclipse Type 1193, Model 1, Style A generators lacking the letter 'M' after their serial numbers.

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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