Recommendation Date
Recipient Name
Great Barrier Airlines
Text
Remind company pilots about the Partenavia’s in-flight vulnerability to engine air intake blockages by sleet, ice or hail, the symptoms of any blockage, and the corrective action necessary should a blockage occur.
Reply Text
Great Barrier Airlines supports your recommendation, and would like to suggest the following addition to your proposal.
• It is advisable that companies should implement as a standard operating procedure (P68) that if temperatures of below 5 degrees C and/or visible moisture are encountered, then engine alternate air systems should be activated.
• Discussion has been held with CAA with regards to incorporating the above (or similar) into a supplement to the Partenavia manual, or to advise all operators.
• Since the occurrence of ZK-DMA all pilots were involved in a flight safety meeting [in] which this incident was discussed. Engineering staff were involved, a working model of an alternate air box was displayed and manual operation shown. The flight standards and training manager reinforced the dangers of not completing all trouble checks from 100% recall, [and] more emphasis has been put on this in training.
• It is advisable that companies should implement as a standard operating procedure (P68) that if temperatures of below 5 degrees C and/or visible moisture are encountered, then engine alternate air systems should be activated.
• Discussion has been held with CAA with regards to incorporating the above (or similar) into a supplement to the Partenavia manual, or to advise all operators.
• Since the occurrence of ZK-DMA all pilots were involved in a flight safety meeting [in] which this incident was discussed. Engineering staff were involved, a working model of an alternate air box was displayed and manual operation shown. The flight standards and training manager reinforced the dangers of not completing all trouble checks from 100% recall, [and] more emphasis has been put on this in training.
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