The operator replaced both right wing aileron trim cables and
chains on the aircraft. As a result of this incident the operator
carried out an aileron trim cable inspection of its fleet of twelve
BAe146 aircraft. Notable corrosion in the rib 14 pulley area was
found in both wings of another aircraft. All aileron trim (wing
loop) cables of that aircraft were subsequently replaced.
On 27 July 2000 the operator issued an Engineering Release (ER)
that required a more thorough inspection of aileron trim cables for
corrosion at each C check. The inspection aimed to ensure that any
hidden corrosion at pulley locations did not pass through major
checks undetected. Inspection highlighted the need to operate
flight controls over their complete range of movement allowing
inspection of cable obscured by pulleys. The ER also called for
cleaning and lubrication of cables, paying particular attention to
the lengths of cable passing through the pulley bank.