TM 1-1520-240-MTF2-69B HOVER (CONT.) (2) Trim to a stable hover. Withoutoperating the magnetic brake switch,apply a 5_- 7_ bank angle to produce asideward velocity. Return longitudinalstick to the trim detent. The helicoptershall maintain the commanded bankangle and hold its original heading (3_)during sideward flight.(3) Repeat step (2), flying sidewards in theopposite direction.g. Hover check (NO.1 AFCS). With the aircrafttrimmed in pitch, roll, and yaw, AFCSSYSTEM SEL — NO.1 and repeat the testson step b. thru f. Then set AFCS SYSTEMSEL switch to both.h. Hover check (NO.2 AFCS). With the aircrafttrimmed in pitch, roll, and yaw, AFCSSYSTEM SEL — NO.2 and repeat the testson step b. thru f. Then set AFCS SYSTEMSEL switch to both.CAUTIONBarometric altitude hold shall not be used ina hover. Rotor downwash and turbulencechanges the reference pressure to the altitudehold transducer.i. Radar altitude hold. RAD ALT —ENGAGED. Check segment lighted. Checkradar altitude hold response while hoveringat a known true altitude of at least 25 feet.Altitude shall be held within 5 feet.
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