Service difficulty report · Bolt · Dhav DHC8102

Difficulty date
November 23, 1996
Submitted
March 26, 2000
Operation
Air carrier
Make and model
Dhav DHC8102
Engine
Pwa PW120A
Part
Bolt
Part number
NAS130431
Condition
Corroded
Location
Gust Lock
Part time
21,290 hours
Component
Dhav
Stage of operation
IN
Nature of condition
F
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) ON REMOVAL OF THE BOLT THAT HOLDS THE RUBBER BUMPERS ON THE GUST LOCK ASSEMBLY, THE BOLT WAS FOUND CORRODED ALMOST 1/2 WAY THROUGH. FAILURE OF THIS BOLT CAN CAUSE THE SPRINGLOADED PLUNGER TO EXTEND OUTWARDS LOCKING UP THE ELEVATOR AS WAS THE CASE WHEN THIS BOLT WAS REMOVED. THE ASSEMBLY, IS CONSTRUCTED IN SUCH A WAY THAT WATER SITS IN THE RECESS FOR THE BOLT THEREBY CAUSING THE CORROSION. THRE ARE NO INSPECTION TASKS TO COVER THIS ITEM. REF. IPC 55-20-00 FIG. 35, ITEM 60.