Snowbird wrote:
AFAIK, I fly a plane whose stall speed is *higher* than an Arrow's.
90 mph sounds quite high for normal final approach esp. w/ just you
in the plane, assuming your stall speed is similar to or lower than
mine.
I target final approach at 80 mph, 75 if it's just me and partial
fuel. I add 1/2 the gust factor as a rule of thumb ie 17 g 27
would add ~5 kts.
JMO, but I don't think it adds to safety to put on too much extra
speed. If it's really nasty and swirly near the ground, it just
extends the time you have to spend in ground effect bleeding off
extra speed.
Why do you feel it's necessary, or safer, to add 10 to 15 kts to
an approach speed which already sounds rather fast?

Note thaty the original poster stated airspeed in MILES PER HOUR not
knots.
90 MPH is about 75 kts, which is okay.
The Arrow has a healthy sink rate the requires some extra speed
initially to keep the sink rate below 500 fpm.