Phenolphthalein is not always a good choice as indicator. Look at the pH profile on the left. If phenolphthalein was used the end point would be reached long before the equivalence point. Almost 10mls difference between the end point and the equivalence point would result. This would be unexceptable as an analysis procedure.

Some of the indicators and the pH range in which they change colour are listed below.

Phenolphthalein pH 8.2 - 10.0
Indigo carmine pH 11.6 - 14.0
Methyl violet pH 0.3 - 3.0
Methyl red pH 4.2 - 6.3
Methyl orange pH 3.1 - 4.5

In the analysis above it may have been better to use methyl red instead of phenolphthalein. The colour change would have occured soon after the equivalence point with minimal addition of acid.