(Observer Network News) On May 4, Reuters quoted two people familiar with the matter as saying that U.S. aviation safety officials have now requested Boeing to submit new analysis documents to illustrate the use of 737 MAX models in three different areas in April this year. The electrical grounding problems found will not affect the aircraft's subsystems.
The problem was first discovered with the Boeing 737MAX model that was in production, and involved electrical grounding inside the backup power control system. For this reason, Boeing recommended to 16 airlines last month to temporarily suspend operations.
After the FAA said that analysis and testing showed that the problem may also involve other systems, which may affect the backup power control unit, circuit breaker panel and main dashboard.
According to the FAA, 109 737 MAXs worldwide have been affected by the problem, and 453 have been delivered since the aircraft was first put into use (data in February), accounting for nearly a quarter.
Therefore, the FAA issued a new airworthiness directive requiring the aircraft to go around after repairing the problem. This caused the 737 MAX to be grounded again less than half a year after it went around.
Many American airlines have stated that they expect Boeing to issue service notices as soon as this week to allow them to repair and restore service to these aircraft. However, it seems that they are required to provide new analysis documents for Boeing to do so. When the best-selling aircraft will be approved by the FAA for a go-around adds new uncertainty.
Earlier, in October 2018 and March 2019, the Boeing 737 MAX series of Lion Air and Ethiopian Airlines were involved in air crashes, respectively. A total of 346 people were killed. The two air crashes caused the aircraft to be damaged worldwide since March 2019. Grounded.
Until November 18, 2020, on the 29th of the Federal Aviation Administration of the United States, an airspace agency of American Airlines announced the lifting of the grounding order for the Boeing 737 MAX; The first flight after the aircraft type was allowed to go around.
On the other hand, coupled with the delivery delays of the 787 models and the impact of the global new crown epidemic, Boeing's reporting camp in the first quarter was lower than the same period last year (when the company was deeply in the 737 Max crisis).
In the first quarter, revenue fell 10% to 15.2 billion U.S. dollars, but reported a net loss of 561 million U.S. dollars, which was slightly lower than the net loss of 641 million U.S. dollars in the same period last year.