An uncompensated, locally level directional gyro is aligned with north on a Greenwich-parallel northern polar grid at 14:00 UTC at 59°57′N 010°30′E. The aeroplane remains stationary until 16:30 UTC, with no mechanical drift and no gyro reset. Using an Earth rotation rate of 15°/h, what is the gyro-heading error, defined as indicated heading minus actual grid heading, to the nearest 0.1°? - ATPL Question Bank In English