TM 1-1520-238-10 9-18 Change 9 9.13 LANDING AND DITCHING. 9.13.1 Emergency Landing in Wooded Areas (Power Off). 1. AUTOROTATE. 2. Collective – Adjust to maximum before main ro- tor contacts tree branches. 9.13.2 Ditching (Power On). The decision to ditch the helicopter shall be made by the pilot when an emergency makes further flight unsafe. 1. Approach to hover. 2. Canopies – Jettison prior to entering water. 3. Pilot shoulder harness – Lock. 4. CPG – Exit helicopter. 5. Hover downwind a safe distance. 6. PWR levers – OFF. 7. Perform hovering autorotation – Apply full col- lective to decay RPM as helicopter settles. 8. Cyclic – Position in direction of roll. 9. Exit when main rotor has stopped. 9.13.3 Ditching (Power Off). If autorotational landing over water becomes necessary. 1. AUTOROTATE – Apply full collective to decay rotor RPM as helicopter settles. 2. Canopies – Jettison prior to entering water. 3. Cyclic – Position in direction of roll. 4. Exit when main rotor has stopped. 9.14 FLIGHT CONTROL FAILURES AND MALFUNCTIONS. a. Failure of components within the flight control sys- tem may be indicated through varying degrees of feed- back, binding, resistance, sloppiness or abnormal control response. These conditions should not be mistaken for the malfunction of the DASE. b. Imminent failure of main rotor components may be indicated by a sudden increase in main rotor vibration and/or unusual noise. Severe changes in lift characteris- tics and/or balance condition can occur due to blade strikes, skin separation, shift or loss of balance weights or other material. Malfunctions may result in severe main-ro- tor flapping. If the main rotor system malfunctions, pro- ceed as follows: WARNING Danger exists that the main rotor system could collapse or separate from the air- craft after landing. A decision must be made whether occupant egress occurs before or after the rotor has stopped. 1. LAND AS SOON AS POSSIBLE. 2. EMER ENG(S) SHUTDOWN after landing. c. During ground operations any abnormal control in- puts required to maintain desired fuselage attitude may be indicative of a problem. If this condition occurs, complete a normal engine shutdown. 9.14.1 Stabilator Automatic Mode Failure. 1. Stabilator RESET button – Press. If automatic mode is not restored: 2. Use manual stabilator. 9.14.2 Stabilator Auto/Manual Mode Failure. 1. Airspeed – Use placard limits. If both crew-sta- tion indicators are inoperative (90 knots maxi- mum): 2. LAND AS SOON AS PRACTICABLE. 9.14.3 DASE Malfunction. DASE malfunctions may manifest themselves as uncommanded control inputs, which may cause unusual rotor disc movement, or aircraft attitude/heading changes. 1. ASE release switch – Press. 2. SAS – Re-engage unaffected axes. 9.14.4 BUCS Failure. WARNING Illumination of the BUCS FAIL warning light in flight shall be treated as a flight control system emergency. Exercise ex- treme care in making large or rapid con- trol inputs. 1. LAND AS SOON AS POSSIBLE. 2. APU – ON 3. EMER ENGINES SHUT DOWN – Perform 9.14.5 BUCS ON. Illumination of the BUCS ON Cau- tion/Warning light informs the crew that the BUCS system