AD 90-25-01

final rule
Data completeness: 70%

Airworthiness Directives; BOEING Model 737 Series Airplanes

AD Number
90-25-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
89-NM-270-AD
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company 737-100 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-200 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-200C Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-300 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-400 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-500 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-600 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-700 Series Airworthiness Directives; BOEING Model 737 Series Airplanes
aircraft The Boeing Company 737-800 Series Airworthiness Directives; BOEING Model 737 Series Airplanes

Unsafe Condition

Corrosion in Model 737 series airplanes could lead to structural degradation if not controlled through an approved corrosion prevention and control program.

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Required Actions

Revise the FAA-approved maintenance program to include Boeing Document D6-38528 within one year after the effective date. Report Level 3 corrosion findings within 7 days and inspect fleet or submit adjustments to inspection schedules. Submit quarterly reports for Level 2 corrosion and follow-up for Level 3 corrosion. Review and implement corrective actions for corrosion exceeding Level 1.

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Compliance Time

Within one year after the effective date of this AD

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Affected Aircraft

All Model 737 series airplanes, certificated in any category.

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 737-100 Series

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2008-10-09 R1

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Effective: Jan 15, 2010 Category: aircraft

2004-03-34 R1

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Airworthiness Directives; Boeing Model 737-100, -200, -200C, - 300, -400, and -500 Series Airplanes

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