Most of us learn from our mistakes. That includes CFIs who, as freshly soloed learners, had an experience that taught them to make sure their learners would be better prepared if they encountered a similar challenge.
For me it was the importance of providing training so the learners could fly to airports within 25 miles of their home field. This training is done before their first solo. After the first solo, I endorse them for solo flight to these auxiliary fields. This is just in case something goes sideways and they can’t land at home.
