NTSB issues urgent safety bulletin about engines found in some Boeing 737 Max jets
1. NTSB recommends jet engine modifications on Boeing 737 Max. 2. Incidents occurred due to bird strikes causing smoke in the cockpit. 3. FAA and Boeing agree with the NTSB's safety recommendations. 4. Boeing and CFM are developing a software design update. 5. No injuries reported from recent incidents; flights landed safely.