AD 2011-01-12

Recurring final rule
Data completeness: 70%

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

AD Number
2011-01-12
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. FAA-2010-0855
FR Citation
76 FR 426

Applicability

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

Unsafe Condition

Corrosion damage of the chrome runout on the head side found on all four midspar fuse pins of the nacelle strut, with a large portion of the chrome plate missing from the corroded area of the shank, which could result in reduced structural integrity of the fuse pins, and consequent loss of the strut and separation of the engine from the airplane.

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

Required Actions

Replace all midspar fuse pins having part number (P/N) 311A1092-2 with a midspar fuse pin having P/N 311A1092-3. This action terminates the requirement for repetitive detailed inspections of the fuse pins of the inboard and outboard midspar fittings of the nacelle strut.

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

Compliance Time

Within 120 months after the effective date of this AD.

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

Affected Aircraft

The Boeing Company Model 737-300, -400, and -500 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 6, 2026

Rights: U.S. Government Public Domain

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View Official Source ↗ Find More ADs for Boeing Company Model 737-300

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