During a constant airspeed descent, the vertical speed indicator (VSI) shows a 500 foot-per-minute descent rate and the groundspeed is 90 knots. Approximately how many nautical miles will the airplane travel while descending from 4,000 feet MSL to 1,000 feet MSL?

During a constant airspeed descent, which flight instrument provides the primary indication for maintaining airspeed?

A limitation of the vertical speed indicator that a pilot must consider during a constant airspeed descent is

You are in straight-and-level flight at 90 knots indicated airspeed. Power is reduced to initiate a descent while maintaining 90 knots constant airspeed. What pitch attitude change is indicated on the attitude indicator?

Proper instrument cross-check technique during a constant airspeed descent emphasizes

The flight data recorder chart during a steady constant airspeed descent provides the following data: | Time (sec) | IAS (kts) | Pressure Altitude (ft) | VSI (fpm) | |------------|-----------|------------------------|-----------| | 0 | 90 | 4,000 | -500 | | 30 | 90 | 3,750 | -500 | | 60 | 90 | 3,500 | -500 | The POH performance chart specifies a 700 fpm descent rate at 90 KIAS with idle power and full flaps in standard conditions. Which instrument error is indicated by this chart?