TM 1-1520-240-108-4-5/(8-4-6 blank)operating in these conditions, should result in the pres-ervation of rated engine power.8-4-41. Hovering.Hovering over salt water at altitudes that cause concen-trated spray into the engine inlets results in gradual pow-er deterioration and eventual reduction of compressorstall margin. Operation in these conditions should beavoided or minimized. The following procedures aregrouped according to wind conditions. Maximum hover-ing altitude, consistent with safety and mission accom-plishment, is recommended to reduce possibility of saltspray ingestion. Prolonged hovering over salt waterwhich results in spray ingestion, indicated by spray onthe windshield, must be avoided. The amount of sprayobserved on the windshield is usually the best indicationof spray ingestion into the engine outlets.a. No wind. Hovering in a no wind condition normallyresults in a relatively low spray concentration at all hover-ing altitudes.b. Light winds (approximately 5 to 16 knots). Hover-ing in these conditions results in the heaviest or mostcritical spray concentrations. Spray can be minimized byheading changes with reference to wind direction andascertaining minimum spray concentration on wind-shield.c. Moderate to heavy winds(15 knots andabove). Higher winds normally result in the lowest ofspray concentration at all hovering altitudes. In theseconditions, hovering can be accomplished into the wind.8-4-42. After Flight.Refer to Appendix C.
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