ICAO素材:Flaps did not retract

On March 19, 2021, American Airline 284 from Honolulu to Los Angeles (USA) with 199 people on board, was climbing out of Honolu's runway 08R when the crew reported a mechanical problem and requested to remain in the airspace. A conflict developed with a private aircraft at 5000 feet, the controller instructed the aircraft to turn left onto a heading of 080 (parallel to the private aircraft), the crew replied "Listen, we turn south, west!" and advised they had flight control problems. ATC turned them onto a heading of 260, which resolved the conflict. The crew requested runway 08L for the return and advised they got the aircraft controllable at a reasonably normal speed, their flaps had not retracted, and landed safely on runway 08L about 20 minutes after departure.

900句练习

535. We can not fully extend the flaps, request the longest runway for landing. 

我们无法完全放出襟翼，请求最长跑道着陆。

OPI questions for Practice

Q1: What's the function of flaps?

Q2: What will pilots do if their flaps did not retract during takeoff?

Q3: What will pilots do if the flaps did not extend during approach?

Q4: What preparations will pilots make before making all-flap up landing/no-flap landing/flapless landing?

Q5: According to your company SOP, what is the flap setting for takeoff and landing?

Q6: According to your company SOP, what are the standard callout for flap retraction and extension?