AD 2019-25-55
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
The surface preparation before bonding was improperly done, which can affect the 9G rigid barrier's strength characteristics. This condition, if not addressed, could result in the potential failure of the 9G rigid barrier under certain emergency landing loads, which could injure occupants.
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Required Actions
Comply with loading restrictions and methods specified in the service information, including reducing the cargo weights for each loading configuration and using additional straps when necessary to address 9G rigid barrier manufacturing non-compliance. Use Technical Standard Order TSO-C172 cargo restraint straps; that TSO specifies a load rating of 5,000 pounds. Restraining cargo directly to a pallet or the airplane as provided in the existing airplane flight manual (AFM) can only be used if that cargo and all cargo aft of that location are restrained to a forward load factor of 9G.
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 737-300, -400, and -700 series airplanes, modified to a Bedek Division Special Freighter (BDSF) by Supplemental Type Certificate (STC) ST01566LA, ST01961SE, or ST02556SE, with a 9G rigid barrier.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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