I don't know what level of precision the altimeters are supposed to have, but it's obviously insane to do night flying in an 0-200 foot corridor on altimeters you think are only accurate to +/- 200 feet. Even though the altimeters were less inaccurate than they thought they were, what they thought they knew was a massive (false) red flag.
I don't know what level of precision the altimeters are supposed to have
Accuracy decreases with range, but for comparison, a civilian Honeywell or Collins model will typically be accurate to about 2' at 500', increasing from 3% to 5% error as you approach 2500'.
I don't know what level of precision the altimeters are supposed to have, but it's obviously insane to do night flying in an 0-200 foot corridor on altimeters you think are only accurate to +/- 200 feet. Even though the altimeters were less inaccurate than they thought they were, what they thought they knew was a massive (false) red flag.
Accuracy decreases with range, but for comparison, a civilian Honeywell or Collins model will typically be accurate to about 2' at 500', increasing from 3% to 5% error as you approach 2500'.