Sec. 25.699 - Lift and drag device indicator.
(a) There must be means to indicate to
the pilots the position of each lift or drag device having a separate
control in the cockpit to adjust its position. In addition, an indication
of unsymmetrical operation or other malfunction in the lift or drag device
systems must be provided when such indication is necessary to enable the
pilots to prevent or counteract an unsafe flight or ground condition,
considering the effects on flight characteristics and performance.
(b) There must be means to indicate to
the pilots the takeoff, en route, approach, and landing lift device
(c) If any extension of the lift and
drag devices beyond the landing position is possible, the controls must be
clearly marked to identify this range of extension.
[Amdt. 25-23, 35 FR 5675, Apr. 8, 1970]