MEL Must Know

Question 1

What are the four categories of MELs and their durations? (MEL 2.7)

Answer 1

CAT A: Time specified
CAT B: 3 Consecutive-calendar days
CAT C: 10 Consecutive-calendar days
CAT D: 120 Consecutive-calendar days

Question 2

Which MEL categories can be extended?

Answer 2

CAT B and C

Question 3

What does (M/FC), (O), (D), (M)?

Answer 3

M/FC: Mx/Flight Crew
O: Ops
D: Dispatch
M: Mx

Question 4

What’s the differed maintenance program, there is Class 1 and Class 2. What is their timing compliance?

Answer 4

Class 1: 10 Days, Unless otherwise specified

Class 2: 30 Days, Uness otherwise specified