MINR · BOEING 737 · 2009-06-14 · Diyarbakir, OF, TU
Event
NTSB number
ENG09IA011
Event ID
20090826X84257
Type
Incident
Date
2009-06-14
Location
Diyarbakir, OF, TU
Coordinates
37.892619, 40.199837
Injuries
Highest injury
MINR
Fatal
0
Serious
0
Minor
2
Uninjured
0
Total aboard
2
Aircraft
Make
BOEING
Model
737
Registration
TC-TLA
FAR Part
NUSC
Engines
2
Damage
—
Conditions
Light
NR
Weather
VMC
Probable cause
An uncommanded elevator surface deflection as a result of a left elevator PCU input arm assembly jam due to FOD lodged between the input arm assembly and the PCU housing. The FOD was a roller element from an elevator upper torque tube output crank bearing, but how or when the roller element liberated from its bearing assembly could not be determined. Contributing to the survivability of this incident was the flight crew’s immediate actions in response to the elevator control system jam.