AD Amdt-39-9764

final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 757 Series Airplanes

AD Number
Amdt-39-9764
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 96-NM-223-AD
FR Citation
61 FR 49409

Applicability

TypeManufacturerModelDetails
aircraft Boeing 757 Airworthiness Directives; Boeing Model 757 Series Airplanes

Unsafe Condition

Improper installation of the main battery shunt and ground stud connection could result in interruption of electrical power during flight, leading to loss of battery power to the standby power source.

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

Required Actions

Perform a one-time inspection of the main battery shunt, wires, washers, and brass jam nuts to detect discrepancies. Replace any discrepant parts with serviceable ones. Inspect and adjust the torque and resistance of the main battery ground stud installation as necessary.

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

Compliance Time

Before further flight

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Affected Aircraft

Boeing Model 757 series airplanes with main battery shunt and ground stud installations that may have improper installation.

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.

View Official Source ↗ Find More ADs for Boeing 757

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