Nov 14 (Reuters) - Bombardier Inc BBDb.TO
* Bombardier signs letter of intent with EgyptAir for up to 24 CS300 aircraft
* Bombardier Commercial Aircraft says deal includes 12 CS300 aircraft with purchase rights for an additional 12 aircraft
* Bombardier Commercial Aircraft says based on list price OF CS300 airliner, a firm-order contract would be valued at approximately $1.1 billion
* Bombardier Commercial Aircraft says if EgyptAir exercised 12 purchase rights for CS300 aircraft, contract value would increase to nearly $2.2 billion