AD 96-01-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes |
Unsafe Condition
The main deck floor beams lack stabilization straps, leading to column buckling instability under ultimate gust loads, and the fuselage skin forward of the main deck side cargo door is not reinforced, resulting in inability to sustain flight maneuver loads with a 1.5 safety factor.
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Required Actions
Revise the Airplane Flight Manual (AFM) and Airplane Weight and Balance Supplement to restrict running load and maximum total payload to suitable levels. These revisions must be completed to prevent structural failure.
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Compliance Time
Effective January 30, 1996
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Affected Aircraft
Boeing Model 747-100 and -200 series airplanes modified with STC SA2322SO, SA2323SO, SA5199NM, SA4227NM-D, or SA5759NM for conversion to special freighter configurations.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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