AD 2010-01-09

Recurring final rule
Data completeness: 80%

Airworthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series Airplanes

AD Number
2010-01-09
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2009-0788
FR Citation
75 FR 1527

Applicability

TypeManufacturerModelDetails
aircraft Boeing Company Model 737-300 Airworthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series Airplanes

Unsafe Condition

Fatigue cracking of the fuselage skin panels at the chem-milled steps, which could result in sudden fracture and failure of the fuselage skin panels, and consequent rapid decompression of the airplane.

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

Required Actions

Perform an external non-destructive inspection (NDI) to detect cracks in the fuselage skin along the chem-mill steps at stringers S-1 and S-2 right, between STA 827 and STA 847. If cracks are found, repair them before further flight using an approved method. Repeat inspections at intervals not to exceed 500 flight cycles.

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Compliance Time

Before the accumulation of 35,000 total flight cycles, or within 500 flight cycles after the effective date of this AD, whichever occurs later.

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Affected Aircraft

The Boeing Company Model 737-300, -400, and -500 series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 737-53A1301, dated September 3, 2009.

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

Source: Official FAA Source ↗

Retrieved: Apr 4, 2026

Rights: U.S. Government Public Domain

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