Service difficulty report · Bulkhead · Dhav DHC3

Difficulty date
January 3, 2006
Submitted
June 6, 2006
Operation
General aviation
Make and model
Dhav DHC3
Aircraft time
23,363 hours
Engine
Pwa R134059
Part
Bulkhead
Part number
C3FS3413
Condition
Cracked
Location
Fuselage
Part time
23,509 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

THE FOLLOWING FLOOR SUPPORTING STRUCTURE WAS FOUND TO BE UNSERVICEABLE IN THE CABIN AREA PN NR C3FS34-13 BULKHEAD LOWER STATION 133.33, C3FS13-27 BULKHEAD LOWER STATION 153.77, C3FS51-27 BULKHEAD LOWER STATION 174.2, C3FS58-15 BULKHEAD LOWER STATION 194.00 REPEATED HEAVY LOADS TO THE FLOOR AREA OVER 23'000 HRS HAD DAMAGED OR WEAKENED THE STRUCTURAL INTEGRITY OF THE FLOORBEAM ATTACH POINTS. ALL OF THE TOP BULKHEAD FLANGES WERE DAMAGED AT THE INTERSECTION OF THE FLOORBEAMS REF #C3FS351-2. THIS DEFECT IS ESPECIALLY IMPORTANT SINCE THE REAR CABIN SEAT/SEAT BELT RESTRAINT IS INDIRECTLY ATTACHED TO THE FLOOR BULKHEADS.