User-defined approach

"A user-defined approach is an instrument approach that is not flown with reference to an  approved published instrument approach procedure."

"The flight crew used selected data from their instrument approach charts for Baucau to formulate a userdefined non-precision approach"

"That incorrect data substantially increased the hazards of the userdefined approach procedure, and the risk of a CFIT event at that stage of the flight increased to a high degree."

"They can include loss of flight crew situational awareness, loss of terrain awareness, nonadherence to standard operating procedures, conduct of improvised (user-defined) approach procedures in IMC and operations in areas of low cloud base and/or poor visibility."

W drugim zdaniu tkwi wyjaśnienie, iż nie są to fragmenty raportu MAK ani KBWL LP.

Czym tamto user-defined approach się skończyło?

"The deceleration force imparted by the impact of the left wing with the trees would have provided a sudden and violent yaw towards the left. Additionally, the damage sustained by the left wing would have resulted in the loss of the high lift devices and severe damage to the wing box. Consequently, the left wing outboard of the outer engine appears to have commenced bending upwards, further reducing its lift producing capability. At that stage the right wing was undamaged. With the aerodynamic lift between the left and right wings no longer symmetrical, the aircraft would have commenced to roll to the left."

Skoszenie lewym skrzydłem drzew i beczka to oczywiście podobienstwo przypadkowe.