AD Amdt-39-11838

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 727 Series Airplanes Modified in Accordance with Valsan Supplemental Type Certificate (STC) SA4363NM

AD Number
Amdt-39-11838
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 2000-NM-248-AD
FR Citation
65 FR 46569

Applicability

TypeManufacturerModelDetails
aircraft Boeing 727 Airworthiness Directives; Boeing Model 727 Series Airplanes Modified in Accordance with Valsan Supplemental Type Certificate (STC) SA4363NM

Unsafe Condition

The nut coming off the through-bolt, allowing the through-bolt to migrate out of the engine mount flange and cone bolt, and possible separation of the engine.

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

Required Actions

Inspect the through-bolt nut for proper torque and specified conditions within 48 clock hours after receiving the telegraphic AD. Repeat inspections at intervals not exceeding 35 flight hours. Install anti-rotation plates within 60 days after July 31, 1990, to terminate repetitive inspections. Submit a report of any discrepancies within 10 days after performing the initial inspection.

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

Compliance Time

Within 48 clock hours for initial inspection, 35 flight hours for subsequent inspections, and 60 days after July 31, 1990, for anti-rotation plate installation.

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

Affected Aircraft

Boeing Model 727 series airplanes modified by the installation of Pratt and Whitney JT8D-217C or -219 engines in accordance with Valsan Supplemental Type Certificate (STC) SA4363NM.

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

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View Official Source ↗ Find More ADs for Boeing 727

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