Since when did the POTUS become an expert on air safety? What is the point of the FAA if the occupant at 1600 Pennsylvania Avenue issues executive orders to ground planes the regulator has deemed airworthy?
The problem for the airlines is not so much the inconvenience of fleet reduction but the astronomical cost of storage. Planes are very brittle. It’s not like a car one puts on bricks in the garage when it won’t be used during the winter.
Planes require the fuel tanks to be full to prevent the risk of damage under the beating sun. The engines must be run everyday to prevent build up of foreign objects. The wheels must be rotated to prevent flat spotting the tyres. One plane sitting on a tarmac that an airline wants to return to service runs at $100,000/mth. Southwest has 31 and American 22. So between them $5m/mth will be wasted.
For Boeing, depending on how quickly this gets sorted, the supply chain which has lead times up to 9 months could create havoc with suppliers. With the 787 delays, things got so bad that some suppliers needed to be bailed out. It is unlikely to see a delay anywhere near the magnitude of the 787 but the disruption can have substantial side effects including lay offs.
Once again the planes are safe to fly without the AOA. It’s a 50 year old airframe with 1 billion hours under its belt. It’s a software issue. Adequate pilot training is all that is required to make it safe to fly.
Worst of all it’s a complete slap in the face for an organization with an exemplary record on air safety to be given a lesson by Trump. The FAA and NTSB take their roles incredibly seriously and the recommendations they have made after accidents has made flying today safer than ever. Bad call Mr President.