AD 2002-23-07
Unsafe Condition
Mechanical failure of the valve stem/seat pinned joint, which could result in a propane vapor leak. Such failure could lead to a propane explosion and fire.
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Required Actions
Replace the valve stems of the main blast, liquid fire, and pilot light valves with improved-design valves P/N CB6425 and CB6426, and install a rubber sealing ring with O-ring P/N BS1806-008. Only install valves P/N CB6425, CB6426, or FAA-approved equivalents, and O-ring P/N BS1806-008 or FAA-approved equivalents.
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Compliance Time
Within 20 hours time-in-service after January 7, 2003, unless already accomplished.
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Affected Aircraft
Cameron Balloons Ltd. (Sky Balloons) Mk1 (BR1) burners, serial numbers 001 through 098, 100, and 101; and Mk2 (Mistral) burners, serial numbers 001 through 098, 100, and 101.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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