AD 98-26-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
Unsafe Condition
Failure of the unreinforced floor structure on the main cargo deck due to insufficient strength to safely carry the maximum allowed payload under certain conditions, such as severe gusts or maneuvers, leading to loss of the airplane.
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Required Actions
Revise the Limitations Sections of Airplane Flight Manuals (AFM), AFM Supplements, and Airplane Weight and Balance Supplements to limit main cargo deck payload. Submit data/analyses to substantiate main cargo deck strength or modify the deck as optional terminating actions.
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Compliance Time
Effective February 16, 1999
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Affected Aircraft
Boeing Model 727 series airplanes converted from passenger to cargo configuration under Supplemental Type Certificates (STC) held by FedEx, Aeronautical Engineers, Inc., Pemco, and ATAZ/Kitty Hawk Air Cargo.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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