NTSB makes safety recommendations to FAA.
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Press Release Summary:
Made to FAA, safety recommendation A-11-35 requires Eurocopter to revise aircraft maintenance manual for helicopters equipped with part No. 355A11-0020/-0030 main rotor blades. Daily flight-related check must include visual inspections of trailing edge of blades and upper/lower skin surfaces for cracks and surface deterioration/disfiguration. Also, A-11-36 requires operators of such Eurocopter helicopters to revise their maintenance manuals to include coinciding daily visual inspections.
Original Press Release:
NTSB Safety Recommendations A-11-35 and -36
The National Transportation Safety Board makes the following safety recommendations to the Federal Aviation Administration:
Require Eurocopter to revise its aircraft maintenance manual for all helicopters equipped with part number 355A11-0020 and/or 355A11-0030 main rotor blades to include, as part of the daily flight-related check, specific visual inspections of the trailing edge of the blades, upper and lower skin surfaces for cracks and surface deterioration/disfiguration. (A-11-35)
Once the Eurocopter aircraft maintenance manual is revised as described in Safety Recommendation A-11-35, require operators of all Eurocopter helicopters equipped with part number 355A11-0020 and/or 355A11-0030 main rotor blades to revise their maintenance manuals to include specific daily visual inspections of the trailing edge of the blades, upper and lower skin surfaces for cracks and surface deterioration/disfiguration. (A-11-36)
http://ntsb.gov/Recs/Letters/2011/A-11-035-036.pdf
